Re: Mysql Processes
Hello. Run ps -axm on the second server, and normally you should see a lot of mysqld threads. Edward David wrote: I just joined this list so I am hoping that this question is relevant to this group. I am running Linux AS4 Enterprise Server. I am running Mysql Ver 14.7 Distrib 4.1.12, for pc-linux-gnu (i686) using readline 4.3 With Client version 3.23.49. When I go and do a ps -ax I see 18 mysqld processes running. When I look at the pid file I only see one Process ID Number. When I look at another server that is running mysql that we do not have access to the cnf file I only see two processes running. Can anyone explain why this is happening and if it is normal. --- Edward David Sr. Systems Analyst University of Calgary Information Resources Information Technology Service --- -- For technical support contracts, goto https://order.mysql.com/?ref=ensita This email is sponsored by Ensita.NET http://www.ensita.net/ __ ___ ___ __ / |/ /_ __/ __/ __ \/ /Gleb Paharenko / /|_/ / // /\ \/ /_/ / /__ [EMAIL PROTECTED] /_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.NET ___/ www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Mysql Processes
I just joined this list so I am hoping that this question is relevant to this group. I am running Linux AS4 Enterprise Server. I am running Mysql Ver 14.7 Distrib 4.1.12, for pc-linux-gnu (i686) using readline 4.3 With Client version 3.23.49. When I go and do a ps -ax I see 18 mysqld processes running. When I look at the pid file I only see one Process ID Number. When I look at another server that is running mysql that we do not have access to the cnf file I only see two processes running. Can anyone explain why this is happening and if it is normal. --- Edward David Sr. Systems Analyst University of Calgary Information Resources Information Technology Service --- -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Too many Mysql processes at startup after upgrade to 4.1.14
Hello. What is SHOW PROCESSLIST reporting when the server is reaching the max_connections limit? Kishore Jalleda [EMAIL PROTECTED] wrote: Hi All, Last night I upgraded our Master server to 4.1.14 standard log from 4.0.17, I upgraded the slave a week ago and the replication was working perfectly, once I upgraded and started mysql, it started fine without any errors but the server was steadily creating mysql processes at the rate of like 20/sec until it reached the Max_connections limit set at 800, while it was doing this it was serving the web clients only randomly , also the load was very very low neither was it taking up any memory, it was just creating processes , I remember seeing this behaviour even earlier with 4.0.17 when the server just started but after a certain point the no of processes return to normal. So I had to switch back to 4.0.x, and it works perfectly fine, Also I did not dump the databases just zipped the old datadir and unzipped it into the new datadir, anybody else experience this behaviour at startup( I am aware that once the server is back online it is flooded with requests), the OS is Redhat 7.3, the server currently does 200-400 qps quiet comfortably . Any help would be appreciated, let me know if you need more info Kishore Jalleda -- For technical support contracts, goto https://order.mysql.com/?ref=ensita This email is sponsored by Ensita.NET http://www.ensita.net/ __ ___ ___ __ / |/ /_ __/ __/ __ \/ /Gleb Paharenko / /|_/ / // /\ \/ /_/ / /__ [EMAIL PROTECTED] /_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.NET ___/ www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Too many Mysql processes at startup after upgrade to 4.1.14
I don't know if this is relevant to you - but I had exactly the same experience when upgrading to MySQL v4.1. It turned out that MySQL was trying to do reverse DNS lookups before authenticating the connecting hosts - and was failing slowly on each because the database machine didn't have external net access. Adding all the local machines to /etc/hosts solved the problem immediately. Chris Allen. On Fri, Sep 16, 2005 at 01:30:34PM +0300, Gleb Paharenko wrote: Hello. What is SHOW PROCESSLIST reporting when the server is reaching the max_connections limit? Kishore Jalleda [EMAIL PROTECTED] wrote: Hi All, Last night I upgraded our Master server to 4.1.14 standard log from 4.0.17, I upgraded the slave a week ago and the replication was working perfectly, once I upgraded and started mysql, it started fine without any errors but the server was steadily creating mysql processes at the rate of like 20/sec until it reached the Max_connections limit set at 800, while it was doing this it was serving the web clients only randomly , also the load was very very low neither was it taking up any memory, it was just creating processes , I remember seeing this behaviour even earlier with 4.0.17 when the server just started but after a certain point the no of processes return to normal. So I had to switch back to 4.0.x, and it works perfectly fine, Also I did not dump the databases just zipped the old datadir and unzipped it into the new datadir, anybody else experience this behaviour at startup( I am aware that once the server is back online it is flooded with requests), the OS is Redhat 7.3, the server currently does 200-400 qps quiet comfortably . Any help would be appreciated, let me know if you need more info Kishore Jalleda -- For technical support contracts, goto https://order.mysql.com/?ref=ensita This email is sponsored by Ensita.NET http://www.ensita.net/ __ ___ ___ __ / |/ /_ __/ __/ __ \/ /Gleb Paharenko / /|_/ / // /\ \/ /_/ / /__ [EMAIL PROTECTED] /_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.NET ___/ www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Too many Mysql processes at startup after upgrade to 4.1.14
Hi, Unfortunately I dint check SHOW PROCESSLIST as I was overwhelmed with the state of the server and had to bring back the old version online, but the reverse DNS lookups could be the reason, but surprisingly it was infact serving some client requests , also is there a way to stop mysql from doing reverse DNS lookups .. Thanks Kishore Jalleda On 9/16/05, Chris Allen [EMAIL PROTECTED] wrote: I don't know if this is relevant to you - but I had exactly the same experience when upgrading to MySQL v4.1. It turned out that MySQL was trying to do reverse DNS lookups before authenticating the connecting hosts - and was failing slowly on each because the database machine didn't have external net access. Adding all the local machines to /etc/hosts solved the problem immediately. Chris Allen. On Fri, Sep 16, 2005 at 01:30:34PM +0300, Gleb Paharenko wrote: Hello. What is SHOW PROCESSLIST reporting when the server is reaching the max_connections limit? Kishore Jalleda [EMAIL PROTECTED] wrote: Hi All, Last night I upgraded our Master server to 4.1.14 standard log from 4.0.17, I upgraded the slave a week ago and the replication was working perfectly, once I upgraded and started mysql, it started fine without any errors but the server was steadily creating mysql processes at the rate of like 20/sec until it reached the Max_connections limit set at 800, while it was doing this it was serving the web clients only randomly , also the load was very very low neither was it taking up any memory, it was just creating processes , I remember seeing this behaviour even earlier with 4.0.17 when the server just started but after a certain point the no of processes return to normal. So I had to switch back to 4.0.x, and it works perfectly fine, Also I did not dump the databases just zipped the old datadir and unzipped it into the new datadir, anybody else experience this behaviour at startup( I am aware that once the server is back online it is flooded with requests), the OS is Redhat 7.3, the server currently does 200-400 qps quiet comfortably . Any help would be appreciated, let me know if you need more info Kishore Jalleda -- For technical support contracts, goto https://order.mysql.com/?ref=ensita This email is sponsored by Ensita.NET http://www.ensita.net/ __ ___ ___ __ / |/ /_ __/ __/ __ \/ / Gleb Paharenko / /|_/ / // /\ \/ /_/ / /__ [EMAIL PROTECTED] /_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.NET ___/ www.mysql.com http://www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
Too many Mysql processes at startup after upgrade to 4.1.14
Hi All, Last night I upgraded our Master server to 4.1.14 standard log from 4.0.17, I upgraded the slave a week ago and the replication was working perfectly, once I upgraded and started mysql, it started fine without any errors but the server was steadily creating mysql processes at the rate of like 20/sec until it reached the Max_connections limit set at 800, while it was doing this it was serving the web clients only randomly , also the load was very very low neither was it taking up any memory, it was just creating processes , I remember seeing this behaviour even earlier with 4.0.17 when the server just started but after a certain point the no of processes return to normal. So I had to switch back to 4.0.x, and it works perfectly fine, Also I did not dump the databases just zipped the old datadir and unzipped it into the new datadir, anybody else experience this behaviour at startup( I am aware that once the server is back online it is flooded with requests), the OS is Redhat 7.3, the server currently does 200-400 qps quiet comfortably . Any help would be appreciated, let me know if you need more info Kishore Jalleda
mysql processes
Hi List, I've searched the archives and the web many times in the past for answers to the following questions but never really got a complete understanding of what is going on. Hopefully someone on the list will be able to take the time to set me straight. I have a typical php + mysql + linux setup. Today I noticed a high load, and checked things out with: mysql% show processlist; it showed 6 processes running: [ I'll skip all the ascii output since it usually ends up garbled] 6 rows in set (0.00 sec) however if I do: ps axuw | grep mysql | wc -l I get: 28 What is going on here? Do I have 28 mysqld's waiting around for requests and just 6 actually processes running? Is there any way to regulate this - something similiar to apache's max_clients, min spare server, max spare servers, etc? We often have mysql just totally melt down a server - someone will run a bit query and then all the others start to back-up. We then end up with a ton of queries trying run at once, the load goes to 50 or even 100(!). How can I stop this? Any tips at all on regulating the use of mysql - this is an ISP server so it is very hard to make sure that all usrs are running sensible and well-constructed database schema's. I have tried to contact mysql for consulting but their beginning prices are too high for our modest budget. Does anyone else know of ways to get some help if no one on the list is able to advise? Thanks! __ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: mysql processes
On Friday, November 7, 2003, at 01:21 PM, Hugh Beaumont wrote: Hi List, I've searched the archives and the web many times in the past for answers to the following questions but never really got a complete understanding of what is going on. Hopefully someone on the list will be able to take the time to set me straight. I have a typical php + mysql + linux setup. Today I noticed a high load, and checked things out with: mysql% show processlist; it showed 6 processes running: [ I'll skip all the ascii output since it usually ends up garbled] 6 rows in set (0.00 sec) however if I do: ps axuw | grep mysql | wc -l I get: 28 What is going on here? Looks like your OS has threads in user space as processes rather than in kernel space. Do I have 28 mysqld's waiting around for requests and just 6 actually processes running? You have one mysqld with 28 threads waiting for requests, only 6 are actually processing requests. Is there any way to regulate this - something similiar to apache's max_clients, min spare server, max spare servers, etc? I don't recall any way to limit the number of threads created, but there is a way to limit the number of threads that are handling delayed inserts - max_delayed_threads and thread_cache_size will tell mysql how many threads to keep around waiting for something to do. in your case, since the threads are in user space, they tend to be more expensive to create, so if your mysql server is busy, you may want to leave a bunch waiting around to process requests. Be aware that the following variables are per-thread, and if they are set high, will consume a lot of RAM: read_buffer (was record_buffer) record_rnd_buffer sort_buffer We often have mysql just totally melt down a server - someone will run a bit query and then all the others start to back-up. We then end up with a ton of queries trying run at once, the load goes to 50 or even 100(!). How many users databases are there on this server? Is the server dedicated to just MySQL? What kinda hardware is it running on? - Gabriel -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
large mysql processes
Hi all, I am using Mysql-4.0.12 on my 7.1 redhat. every thing is working fine but when i give command #ps -ae it shows various process including mysqld_safe and mysql . the mysqld process are eleven in number with respective pids on my machine . I want to know why there are large number of mysql processes are running becasue it should show only single mysqld process. any idea sanjay -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: large mysql processes
Welcome to the world of Linux! You see, even though I love Linux to death, LinuxThreads are a bit inferior to what everyone else has in their OS of choice (If Xavier reads this, please don't kill me or submit some kernel patch that will get even with me. :-) ). LinuxThreads essentially are processes - you get the advantage of threads (shared address space and intra-process concurrency) but each thread appears as a process. RedHat 9.0 ships with NPTL - a newer thread implementation that acts properly. Regards, Chris P.S - Be thankful you're running Linux - at least we have kernel-space threads. The poor people forced to run SCO's inferior products quite often have to put up with user-space threads. sanjay gupta wrote: Hi all, I am using Mysql-4.0.12 on my 7.1 redhat. every thing is working fine but when i give command #ps -ae it shows various process including mysqld_safe and mysql . the mysqld process are eleven in number with respective pids on my machine . I want to know why there are large number of mysql processes are running becasue it should show only single mysqld process. any idea sanjay -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
MySQL processes not showing.
Hi, I have a P4 server with RedHat 8.0 running on the lates stable kernel. I also have MySQL 3.23.54 installed. My problem is that when I do a 'ps aux', I only see one mysql process: mysql 916 0.0 0.3 38616 3936 ?S17:39 0:02 /usr/sbin/mysqld --defaults-file=/etc/my.cnf --basedir=/ --datadir=/var/lib/mys (root 881 0.0 0.0 42844 ?S17:39 0:00 /bin/sh /usr/bin/safe_mysqld --defaults-file=/etc/my.cnf) Or: ps aux|grep mysql mysql 916 0.0 0.3 38752 3936 ?S17:39 0:02 /usr/sbin/mysqld But if I do a 'fuser 3306/tcp', I get a 3306/tcp: 916 918 919 1127 1128 4774 5348 6042 6083 6214 9113 9123 9424 9445 9448 9819 9909 9984 9992 9994 10088 10095 10096 10112 10127 10228 10240 So basically I have some missing mysql processes. But if I know a pid, I can ps it, like this: ps 1128 PID TTY STAT TIME COMMAND 1128 ?S 0:00 /usr/sbin/mysqld --defaults-file=/etc/my.cnf --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/run/ Is this normal? Or maybe the system switched to threads when I was not watching :-), so that is why I only see one process?? Please advise! Regards, - Csongor Fagyal ps: Being paranoid I have also run the lates chkrootkit... but it says my system is clean. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: MySQL processes not showing.
All right, you can disregard this :-) I was too quick to post it to the
list... those _are_ threads, the kernel upgrade must have introduced
them :-). Sorry for the bandwidth!
But other than that, something off-topic: on the very same server I have
found that I cannot issue the 'su' command, because it just locks up.
All I can see is ('ps aux' after 'su -l www'):
root 11613 0.0 0.0 4096 996 pts/0S20:42 0:00 su -l www
www 11647 0.0 0.0 3408 476 pts/0T20:42 0:00 stty erase ?
and su... hangs.
What is this any who called stty???
Any ideas?
Thanx,
- Cs.
Hi,
I have a P4 server with RedHat 8.0 running on the lates stable kernel.
I also have MySQL 3.23.54 installed.
My problem is that when I do a 'ps aux', I only see one mysql
process: mysql 916 0.0 0.3 38616 3936 ?S17:39
0:02 /usr/sbin/mysqld --defaults-file=/etc/my.cnf --basedir=/
--datadir=/var/lib/mys
(root 881 0.0 0.0 42844 ?S17:39 0:00
/bin/sh /usr/bin/safe_mysqld --defaults-file=/etc/my.cnf)
Or:
ps aux|grep mysql
mysql 916 0.0 0.3 38752 3936 ?S17:39 0:02
/usr/sbin/mysqld
But if I do a 'fuser 3306/tcp', I get a
3306/tcp: 916 918 919 1127 1128 4774 5348 6042
6083 6214 9113 9123 9424 9445 9448 9819 9909 9984 9992 9994
10088 10095 10096 10112 10127 10228 10240
So basically I have some missing mysql processes. But if I know a pid,
I can ps it, like this:
ps 1128
PID TTY STAT TIME COMMAND
1128 ?S 0:00 /usr/sbin/mysqld --defaults-file=/etc/my.cnf
--basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/run/
Is this normal? Or maybe the system switched to threads when I was not
watching :-), so that is why I only see one process??
Please advise!
Regards,
- Csongor Fagyal
ps: Being paranoid I have also run the lates chkrootkit... but it says
my system is clean.
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Re: URGENT problem with mysql processes
Neither of these two machines send the request. I have 12 webservers, which send the requests. I have 5 database servers, 1 master(for updates/inserts/deletes) and 4 slaves(for selects). Machine A below was the current Master DB server, however it is old and was being replaced by machine B -- Keith Bussey Wisol, Inc. Chief Technology Manager (514) 398-9994 ext.225 Quoting Nils Valentin [EMAIL PROTECTED]: Hi Keith, soory now I got confused. Which machine is sending the requests (client) and which machine is the mysql server (server). Do you use php or something like this (webinterface) on the client ? If yes, than my suggestions below apply. If no than I we will have to think the next step. Best regards Nils Valentin Tokyo/Japan 2003年 6月 27日 金曜日 11:29、Keith Bussey さんは書きました: Ok but that's not what I meant. I'll try to explain better. Machine A: IP = 192.168.1.71 Machine B: IP = 192.168.1.79 1) Scripts goto 192.168.1.71 - Everything is OK 2) Changed scripts to 192.168.1.79 - Site works at first, but processes pile up until server is killed 3) Halt machine B 4) Give machine A IP 192.168.1.79 (so now it has 2 IPs) 5) Problem persists even though it's a different machine, site works but then processes pile up and kill machine 6) Change scripts to use 192.168.1.71 again 7) Site works fine What I don't get is why do processes run normally with IP 192.168.1.71, but NOT with IP 192.168.1.79 even when they are on the same machine ? -- Keith Bussey Wisol, Inc. Chief Technology Manager (514) 398-9994 ext.225 Quoting Nils Valentin [EMAIL PROTECTED]: Hi Keith, The wrong IP address could only avoid a client to connect to the database server. If you have the TCP/IP address specified in /etc/php.ini or for phpmyadmin in config.inc.php or which ever tool you use than of course it will try to connect to this IP address. Best regards Nils Valentin Tokto/Japan 2003å¹´ 6æ 27æ¥ éææ¥ 11:02ãKeith Bussey ããã¯æ¸ãã¾ãã: Hrmmmeaning if I do id mysql, that information (group etc..) ? I've halted that server and moved everything back to my original server for now, I had too much downtime. I did notice something else interesting though: The old mahcine's IP is 192.168.1.71 New machine's IP is 192.168.1.79 Now that it's halted, instead of changing the IP back to .71 in my pages/scripts I added .79 to the .71 machine so it has both Now that machine experienced the exact same problem. Switching my code to use .71 again however, and no problems. Could somehow there be a problem with the IP address 192.168.1.79?? It seems very strange, however tomorrow I will try putting the .71 on the new machine and see if it works or not -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED] -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: URGENT problem with mysql processes
When you said you modified the scripts, are these the scripts on the 12 webservers (mysql clients) ? If not, then these mysql clients (webservers) would still be wanting to send to IP addres 192.168.1.71 as configured for php or in your client. Best regards Nils Valentin Tokyo/Japan 2003 6 27 14:58Keith Bussey : Neither of these two machines send the request. I have 12 webservers, which send the requests. I have 5 database servers, 1 master(for updates/inserts/deletes) and 4 slaves(for selects). Machine A below was the current Master DB server, however it is old and was being replaced by machine B -- Keith Bussey Wisol, Inc. Chief Technology Manager (514) 398-9994 ext.225 Quoting Nils Valentin [EMAIL PROTECTED]: Hi Keith, soory now I got confused. Which machine is sending the requests (client) and which machine is the mysql server (server). Do you use php or something like this (webinterface) on the client ? If yes, than my suggestions below apply. If no than I we will have to think the next step. Best regards Nils Valentin Tokyo/Japan 2003 6 27 11:29Keith Bussey : Ok but that's not what I meant. I'll try to explain better. Machine A: IP = 192.168.1.71 Machine B: IP = 192.168.1.79 1) Scripts goto 192.168.1.71 - Everything is OK 2) Changed scripts to 192.168.1.79 - Site works at first, but processes pile up until server is killed 3) Halt machine B 4) Give machine A IP 192.168.1.79 (so now it has 2 IPs) 5) Problem persists even though it's a different machine, site works but then processes pile up and kill machine 6) Change scripts to use 192.168.1.71 again 7) Site works fine What I don't get is why do processes run normally with IP 192.168.1.71, but NOT with IP 192.168.1.79 even when they are on the same machine ? -- Keith Bussey Wisol, Inc. Chief Technology Manager (514) 398-9994 ext.225 Quoting Nils Valentin [EMAIL PROTECTED]: Hi Keith, The wrong IP address could only avoid a client to connect to the database server. If you have the TCP/IP address specified in /etc/php.ini or for phpmyadmin in config.inc.php or which ever tool you use than of course it will try to connect to this IP address. Best regards Nils Valentin Tokto/Japan 2003 6 27 11:02Keith Bussey : Hrmmmeaning if I do id mysql, that information (group etc..) ? I've halted that server and moved everything back to my original server for now, I had too much downtime. I did notice something else interesting though: The old mahcine's IP is 192.168.1.71 New machine's IP is 192.168.1.79 Now that it's halted, instead of changing the IP back to .71 in my pages/scripts I added .79 to the .71 machine so it has both Now that machine experienced the exact same problem. Switching my code to use .71 again however, and no problems. Could somehow there be a problem with the IP address 192.168.1.79?? It seems very strange, however tomorrow I will try putting the .71 on the new machine and see if it works or not -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: URGENT problem with mysql processes
Hi Keith, from your last e-mail I understand now finally that we are talking about replication here. Would have been a short cut to mention it in your first e-mail. The failed login attempts couldn't be from your slaves trying to login, but you havent set them up on the master yet ? Just a guess, so. 2003 6 27 09:05Keith Bussey : | 106 | unauthenticated user | 192.168.1.59:1925 | NULL | Connect | NULL | | login NULL | | 115 | unauthenticated user | 192.168.1.53:2041 | NULL | Connect | NULL | | login NULL | | 118 | unauthenticated user | 192.168.1.56:4172 | NULL | Connect | NULL | | login NULL | | 119 | unauthenticated user | 192.168.1.56:4173 | NULL | Connect | NULL | | login NULL Best regards Nils Valentin Tokyo/Japan -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: URGENT problem with mysql processes
If it is the replication problem...:: Check the replication account on the master server: ...[EMAIL PROTECTED] identified by ... ...[EMAIL PROTECTED] identified by ... ...[EMAIL PROTECTED] identified by ... ... ...[EMAIL PROTECTED] identified by ... or perhaps simply set to ...replication_account@% identified by ... make sure the account has access to the specified db.tables, too. Me fail English? That's unpossible ###___Archon___### - Original Message - From: Nils Valentin [EMAIL PROTECTED] To: Keith Bussey [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Friday, June 27, 2003 1:30 PM Subject: Re: URGENT problem with mysql processes Hi Keith, from your last e-mail I understand now finally that we are talking about replication here. Would have been a short cut to mention it in your first e-mail. The failed login attempts couldn't be from your slaves trying to login, but you havent set them up on the master yet ? Just a guess, so. 2003 6 27 09:05Keith Bussey : | 106 | unauthenticated user | 192.168.1.59:1925 | NULL | Connect | NULL | | login NULL | | 115 | unauthenticated user | 192.168.1.53:2041 | NULL | Connect | NULL | | login NULL | | 118 | unauthenticated user | 192.168.1.56:4172 | NULL | Connect | NULL | | login NULL | | 119 | unauthenticated user | 192.168.1.56:4173 | NULL | Connect | NULL | | login NULL Best regards Nils Valentin Tokyo/Japan -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: URGENT problem with mysql processes
No, the slaves replicate fine and I can see their entries in the processlist normally (as their hostname), not as unauthenticated user.. -- Keith Bussey Wisol, Inc. Chief Technology Manager (514) 398-9994 ext.225 Quoting Nils Valentin [EMAIL PROTECTED]: Hi Keith, from your last e-mail I understand now finally that we are talking about replication here. Would have been a short cut to mention it in your first e-mail. The failed login attempts couldn't be from your slaves trying to login, but you havent set them up on the master yet ? Just a guess, so. 2003年 6月 27日 金曜日 09:05、Keith Bussey さんは書きました: | 106 | unauthenticated user | 192.168.1.59:1925 | NULL | Connect | NULL | | login NULL | | 115 | unauthenticated user | 192.168.1.53:2041 | NULL | Connect | NULL | | login NULL | | 118 | unauthenticated user | 192.168.1.56:4172 | NULL | Connect | NULL | | login NULL | | 119 | unauthenticated user | 192.168.1.56:4173 | NULL | Connect | NULL | | login NULL Best regards Nils Valentin Tokyo/Japan -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: URGENT problem with mysql processes
No, replication is fine I can see those processes as they should be. The problem processes all come from the webservers' requests. -- Keith Bussey Wisol, Inc. Chief Technology Manager (514) 398-9994 ext.225 Quoting Dominicus Donny [EMAIL PROTECTED]: If it is the replication problem...:: Check the replication account on the master server: ...[EMAIL PROTECTED] identified by ... ...[EMAIL PROTECTED] identified by ... ...[EMAIL PROTECTED] identified by ... ... ...[EMAIL PROTECTED] identified by ... or perhaps simply set to ...replication_account@% identified by ... make sure the account has access to the specified db.tables, too. Me fail English? That's unpossible ###___Archon___### - Original Message - From: Nils Valentin [EMAIL PROTECTED] To: Keith Bussey [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Friday, June 27, 2003 1:30 PM Subject: Re: URGENT problem with mysql processes Hi Keith, from your last e-mail I understand now finally that we are talking about replication here. Would have been a short cut to mention it in your first e-mail. The failed login attempts couldn't be from your slaves trying to login, but you havent set them up on the master yet ? Just a guess, so. 2003年 6月 27日 金曜日 09:05、Keith Bussey さんは書きました: | 106 | unauthenticated user | 192.168.1.59:1925 | NULL | Connect | NULL | | login NULL | | 115 | unauthenticated user | 192.168.1.53:2041 | NULL | Connect | NULL | | login NULL | | 118 | unauthenticated user | 192.168.1.56:4172 | NULL | Connect | NULL | | login NULL | | 119 | unauthenticated user | 192.168.1.56:4173 | NULL | Connect | NULL | | login NULL Best regards Nils Valentin Tokyo/Japan -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: URGENT problem with mysql processes
Quoting Nils Valentin [EMAIL PROTECTED]: When you said you modified the scripts, are these the scripts on the 12 webservers (mysql clients) ? Yes, when I mention modifying my scripts, I mean the scripts/pages on the 12 webservers If not, then these mysql clients (webservers) would still be wanting to send to IP addres 192.168.1.71 as configured for php or in your client. Best regards Nils Valentin Tokyo/Japan 2003年 6月 27日 金曜日 14:58、Keith Bussey さんは書きました: Neither of these two machines send the request. I have 12 webservers, which send the requests. I have 5 database servers, 1 master(for updates/inserts/deletes) and 4 slaves(for selects). Machine A below was the current Master DB server, however it is old and was being replaced by machine B -- Keith Bussey Wisol, Inc. Chief Technology Manager (514) 398-9994 ext.225 Quoting Nils Valentin [EMAIL PROTECTED]: Hi Keith, soory now I got confused. Which machine is sending the requests (client) and which machine is the mysql server (server). Do you use php or something like this (webinterface) on the client ? If yes, than my suggestions below apply. If no than I we will have to think the next step. Best regards Nils Valentin Tokyo/Japan 2003å¹´ 6æ 27æ¥ éææ¥ 11:29ãKeith Bussey ããã¯æ¸ãã¾ãã: Ok but that's not what I meant. I'll try to explain better. Machine A: IP = 192.168.1.71 Machine B: IP = 192.168.1.79 1) Scripts goto 192.168.1.71 - Everything is OK 2) Changed scripts to 192.168.1.79 - Site works at first, but processes pile up until server is killed 3) Halt machine B 4) Give machine A IP 192.168.1.79 (so now it has 2 IPs) 5) Problem persists even though it's a different machine, site works but then processes pile up and kill machine 6) Change scripts to use 192.168.1.71 again 7) Site works fine What I don't get is why do processes run normally with IP 192.168.1.71, but NOT with IP 192.168.1.79 even when they are on the same machine ? -- Keith Bussey Wisol, Inc. Chief Technology Manager (514) 398-9994 ext.225 Quoting Nils Valentin [EMAIL PROTECTED]: Hi Keith, The wrong IP address could only avoid a client to connect to the database server. If you have the TCP/IP address specified in /etc/php.ini or for phpmyadmin in config.inc.php or which ever tool you use than of course it will try to connect to this IP address. Best regards Nils Valentin Tokto/Japan 2003å¹´ 6æ 27æÂÂ¥ éÂÂæÂÂæÂÂ¥ 11:02ãÂÂKeith Bussey ãÂÂãÂÂã¯æ¸ãÂÂã¾ãÂÂãÂÂ: Hrmmmeaning if I do id mysql, that information (group etc..) ? I've halted that server and moved everything back to my original server for now, I had too much downtime. I did notice something else interesting though: The old mahcine's IP is 192.168.1.71 New machine's IP is 192.168.1.79 Now that it's halted, instead of changing the IP back to .71 in my pages/scripts I added .79 to the .71 machine so it has both Now that machine experienced the exact same problem. Switching my code to use .71 again however, and no problems. Could somehow there be a problem with the IP address 192.168.1.79?? It seems very strange, however tomorrow I will try putting the .71 on the new machine and see if it works or not -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
URGENT problem with mysql processes
Major problem! I've installed mysql-standard 4.0.13 (from binary) a new DB server, it is - quad-xeon (500mhz each cpu) - 3 gig RAM - Linux Redhat 7.3 When I start up mysql, processes looking like the following begin to pile up until it kills the server: | 106 | unauthenticated user | 192.168.1.59:1925 | NULL | Connect | NULL | login | NULL | | 115 | unauthenticated user | 192.168.1.53:2041 | NULL | Connect | NULL | login | NULL | | 118 | unauthenticated user | 192.168.1.56:4172 | NULL | Connect | NULL | login | NULL | | 119 | unauthenticated user | 192.168.1.56:4173 | NULL | Connect | NULL | login | NULL | I need to fix this immediately as my site cannot run ! Thanks in advance. I've seen this exact same situation happen to others (posted on various boards), however never saw any solutions ;/ -- Keith Bussey Wisol, Inc. Chief Technology Manager (514) 398-9994 ext.225 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: URGENT problem with mysql processes
Hi Keith, The wrong IP address could only avoid a client to connect to the database server. If you have the TCP/IP address specified in /etc/php.ini or for phpmyadmin in config.inc.php or which ever tool you use than of course it will try to connect to this IP address. Best regards Nils Valentin Tokto/Japan 2003 6 27 11:02Keith Bussey : Hrmmmeaning if I do id mysql, that information (group etc..) ? I've halted that server and moved everything back to my original server for now, I had too much downtime. I did notice something else interesting though: The old mahcine's IP is 192.168.1.71 New machine's IP is 192.168.1.79 Now that it's halted, instead of changing the IP back to .71 in my pages/scripts I added .79 to the .71 machine so it has both Now that machine experienced the exact same problem. Switching my code to use .71 again however, and no problems. Could somehow there be a problem with the IP address 192.168.1.79?? It seems very strange, however tomorrow I will try putting the .71 on the new machine and see if it works or not -- --- Valentin Nils Internet Technology E-Mail: [EMAIL PROTECTED] URL: http://www.knowd.co.jp Personal URL: http://www.knowd.co.jp/staff/nils -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
MySQL processes..
hi, I have a problem with the connections and would appreicate a lot if anyone can provide a soln.. Our JSP application has connections to both Oracle and MySQL... In each page there are nearly a dozen queries executing on a MySQL db. at the begining of each page, a connection is opened and at the end they are close.. Ideally, if the user waits for the page to load completely and then hit the button Next or Cancel, the connection is freed.. But what happens often is that soon after entering the page, many users just click on Next resulting in the connection not getting closed...and soon, the no of connections exceed the allotted number (because they dont get freed automatically) and thus crashes the application.. My question is this: Is there anyway to kill the processes in MySQL (ofcourse i can do it manually but am talking about real time) ??? thnx for any suggestions.. sands - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: MySQL processes..
On Thursday 17 October 2002 19:33, Sandeep Murphy wrote: Our JSP application has connections to both Oracle and MySQL... In each page there are nearly a dozen queries executing on a MySQL db. at the begining of each page, a connection is opened and at the end they are close.. Ideally, if the user waits for the page to load completely and then hit the button Next or Cancel, the connection is freed.. thnx for any suggestions.. Give up JSP ... Move the DB code to servlets, where you have better control. - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: MySQL processes..
Sandeep Murphy wrote:
hi,
I have a problem with the connections and would appreicate a lot if anyone can provide a soln..
Our JSP application has connections to both Oracle and MySQL... In each page there are nearly a dozen queries executing on a MySQL db. at the begining of each page, a connection is opened and at the end they are close.. Ideally, if the user waits for the page to load completely and then hit the button Next or Cancel, the connection is freed..
But what happens often is that soon after entering the page, many users just click on Next resulting in the connection not getting closed...and soon, the no of connections exceed the allotted number (because they dont get freed automatically) and thus crashes the application..
Wrap your code with a try/finally{} block, and in the finally block, put
your connection.close(). It will always get called, no matter whether or
not the user clicks next.
My question is this: Is there anyway to kill the processes in MySQL (ofcourse i can do it manually but am talking about real time) ???
mysqladmin will let you kill threads.
-Mark
--
For technical support contracts, visit https://order.mysql.com/?ref=mmma
__ ___ ___ __
/ |/ /_ __/ __/ __ \/ / Mark Matthews [EMAIL PROTECTED]
/ /|_/ / // /\ \/ /_/ / /__ MySQL AB, Full-Time Developer - JDBC/Java
/_/ /_/\_, /___/\___\_\___/ Flossmoor (Chicago), IL USA
___/ www.mysql.com
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RE: MySQL processes..
Hi Mark,
Yes, the code is wrapped by a try , catch, finally block but still we r facing
suspended connections.. :(
am using MysqlFront to administer the dbs and i can kill the suspended/delayed
processes manually..
Does mysqladmin provide any other additional services??
thnx,
sands
-Original Message-
From: Mark Matthews [mailto:mark;mysql.com]
Sent: quinta-feira, 17 de Outubro de 2002 13:05
To: Sandeep Murphy
Cc: [EMAIL PROTECTED]
Subject: Re: MySQL processes..
Sandeep Murphy wrote:
hi,
I have a problem with the connections and would appreicate a lot if anyone can
provide a soln..
Our JSP application has connections to both Oracle and MySQL... In each page there
are nearly a dozen queries executing on a MySQL db. at the begining of each page, a
connection is opened and at the end they are close.. Ideally, if the user waits for
the page to load completely and then hit the button Next or Cancel, the connection is
freed..
But what happens often is that soon after entering the page, many users just click
on Next resulting in the connection not getting closed...and soon, the no of
connections exceed the allotted number (because they dont get freed automatically)
and thus crashes the application..
Wrap your code with a try/finally{} block, and in the finally block, put
your connection.close(). It will always get called, no matter whether or
not the user clicks next.
My question is this: Is there anyway to kill the processes in MySQL (ofcourse i can
do it manually but am talking about real time) ???
mysqladmin will let you kill threads.
-Mark
--
For technical support contracts, visit https://order.mysql.com/?ref=mmma
__ ___ ___ __
/ |/ /_ __/ __/ __ \/ / Mark Matthews [EMAIL PROTECTED]
/ /|_/ / // /\ \/ /_/ / /__ MySQL AB, Full-Time Developer - JDBC/Java
/_/ /_/\_, /___/\___\_\___/ Flossmoor (Chicago), IL USA
___/ www.mysql.com
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Hung login mysql processes - unable to kill.
Hi everyone, I have a rather obscure problem with hung login connections in mysql. I've set the wait|interactive_timeout to 120 seconds, but it has no effect.\ If I attempt to `mysqladmin kill id`, the process is marked 'killed', but never goes away. Now I know the main problem is with the program I am using to create the connections and access the data, but I'm ignoring that right now because I want to deal with these stale (or hung) login processes. And find out how to remove them or time them out (without restarting mysql mind you, if at all possible). Here's some brief output from my `mysqladmin processlist`: ++--+---+--+-+--+---+--+ | Id | User | Host | db | Command | Time | State | Info | ++--+---+--+-+--+---+--+ | 22088 | via_httplogs | localhost | | Connect | | login | | | 22877 | via_httplogs | localhost | | Connect | | login | | | 23135 | via_httplogs | localhost | | Connect | | login | | | 23226 | via_httplogs | localhost | | Connect | | login | | | 26523 | via_httplogs | localhost | | Connect | | login | | | 32105 | via_httplogs | localhost | | Connect | | login | | | 32113 | via_httplogs | localhost | | Connect | | login | | | 37098 | via_httplogs | localhost | | Connect | | login | | | 38300 | via_httplogs | localhost | | Connect | | login | | | 51212 | via_httplogs | localhost | | Connect | | login | | | 89713 | via_httplogs | localhost | | Connect | | login | | | 99008 | via_httplogs | localhost | | Connect | | login | | | 119642 | via_httplogs | localhost | via_httplogs | Sleep | 2 | | | | 119644 | via_httplogs | localhost | via_httplogs | Sleep | 29 | | | | 119645 | via_httplogs | localhost | via_httplogs | Sleep | 14 | | | | 119646 | via_httplogs | localhost | via_httplogs | Sleep | 41 | | | ... Nothing shows up in the mysql error log either. Any ideas? Thanks again. -reid - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Mysql processes not dying
Is there any reason for mysqld processes not dying? Any try to kill it result in a 'defunct' processes (accoarding to ps aux). And what is a defunct process? The kernel prints the message: mm: critical shortage of bounce buffers. Any ideia what is it´s relation with Mysql? The machine has no special devices and has 1GB of ram. Thanks for any help. Pedro Furlanetto ocarteiro.com team - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: Lots of spawning Mysql processes and one that won't die?
Ryan Shrout ([EMAIL PROTECTED]) writes: PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND= =20 24424 mysql 18 0 6116 6116 2196 R99.9 0.5 4:05 mysqld = This is after a mysqld restart -- It restarted, but didn't work because = this single mysqld process wouldn't die. I even tried to kill it kill = 24424 and it still wouldn't go away -- not letting me restart mysqld. IT often takes several seconds for a killed mysqld process to clean up and go away. I wouldn't recommend doing a kill -9, though, except as a last resort. The fact that mysqld is still running means it's doing somethig, it hasn't died. I used to have the same problem until I used hdparm to tune my drives. Surprisingly, it made a *lot* of difference - I was surprised at how much it made a difference in how fast mysql ran. -- Ed Carp, N7EKG [EMAIL PROTECTED] 214/986-5870 cell phone http://www.pobox.com/~erc I sometimes wonder if the American people deserve to be free - they seem so unwilling to fight to preserve the few freedoms they have left. - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: Lots of spawning Mysql processes and one that won't die?
This is after a mysqld restart -- It restarted, but didn't work because this single mysqld process wouldn't die. I even tried to kill it kill 24424 and it still wouldn't go away -- not letting me restart mysqld. What is going on here? kill -9 24424 i.t - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: Lots of spawning Mysql processes and one that won't die?
Dunno if this will help or not, I'll just throw it out for consideration. I'm just learning PHP, Javascript etc. and tend to make a lot of mistakes in my scripts at this point. When I write a script that executes a binary on the Apache server (NT 4.0 SP6a) and it goes off into na-na land, I terminate the page loading under netscape with the esc key. This leaves dead Apache child processes in the background, one for each page load that is canceled. Any possibility you've got some scripts running/barfing when you start up mySQL? Regards, Dan Haynes -Original Message- From: Ryan Shrout [mailto:[EMAIL PROTECTED]] Sent: Tuesday, August 14, 2001 4:36 PM To: [EMAIL PROTECTED] Subject: Lots of spawning Mysql processes and one that won't die? Earlier I told you all about the mysqld problem I had with my dual-athlon server. Well, more hunting and I find this: 6:26pm up 4:55, 1 user, load average: 3.05, 28.62, 26.85 106 processes: 103 sleeping, 3 running, 0 zombie, 0 stopped CPU0 states: 28.4% user, 4.3% system, 0.0% nice, 66.2% idle CPU1 states: 79.3% user, 1.3% system, 0.0% nice, 18.2% idle Mem: 1026964K av, 699636K used, 327328K free, 56K shrd, 67576K buff Swap: 2048248K av, 17980K used, 2030268K free 463444K cached PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND 24424 mysql 18 0 6116 6116 2196 R99.9 0.5 4:05 mysqld 19915 apache 8 0 7316 6280 3976 S 0.5 0.6 0:02 httpd 25881 root 11 0 1124 1124 840 R 0.5 0.1 0:00 top 888 apache 9 0 6476 5028 2812 S 0.3 0.4 0:36 httpd 20001 apache 9 0 7460 6424 3972 S 0.3 0.6 0:03 httpd 20276 apache 9 0 7264 6232 3976 S 0.3 0.6 0:02 httpd 24316 apache 8 0 5500 4460 3860 S 0.3 0.4 0:00 httpd 24371 apache 8 0 6072 5032 3900 S 0.3 0.4 0:00 httpd 24441 apache 9 0 5440 4400 3844 S 0.3 0.4 0:00 httpd 24458 apache 8 0 5868 4828 3852 S 0.3 0.4 0:00 httpd 24490 apache 8 0 5496 4456 3852 S 0.3 0.4 0:00 httpd 24459 apache 8 0 5520 4456 3856 S 0.1 0.4 0:00 httpd 24484 apache 8 0 5784 4672 3832 S 0.1 0.4 0:00 httpd 24502 apache 8 0 5496 4432 3860 S 0.1 0.4 0:00 httpd This is after a mysqld restart -- It restarted, but didn't work because this single mysqld process wouldn't die. I even tried to kill it kill 24424 and it still wouldn't go away -- not letting me restart mysqld. What is going on here? Ryan Shrout Owner - Amdmb.com http://www.amdmb.com/ [EMAIL PROTECTED] - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: Apache/PHP/MySQL - processes multiply until about 30, then doom
Thanks for the reply!, Scott! I considered changing the number of allowed connections but I figured this would just defer the problem, as the root problem was the increasing number of connections. Last night I went through the entire website looking for code that used mysql_pconnect() in PHP, which provides 'persistent' connections. I had thought before that I had caught all of these but found another 40 or so files that had either been missed or magically appeared. I converted all those to standard mysql_connect() calls and ran a stress test all night - using wget to fetch 1000 pages as fast as possible from a neighboring machine, over and over. On the server I have a loop running like this: N=1; while [ $N -ge 1 ]; do ps aux|grep mysql |wc; sleep 5; done which shows the number of mysql processes every five seconds or so. I had run this test earlier and over two hours' time the number of connections increased to about 22. After changing all the mysql_pconnect() calls to mysql_connect(), and leaving the wget job running all night (the 'at' job I set up to kill it while I was sleeping failed), the number of connections was still at 5. This involved fetching almost 400,000 pages. So it appears that the increasing number of connections has to do with some persistent connections never being closed, although PHP thought they were. Determining if this is a PHP, MySQL, Apache or Redhat problem is beyond my desired effort and code experience level. At least all parts are open source!! Interestingly, the rate at which wget could fetch pages almost doubled while the server's CPU load dropped from 86% to 77%, which bears out the experience of some others on various PHP lists. Some users get dramatic improvements using mysql_pconnect(), others don't. I will now make another pass at a couple of pages that seemed to be the focus of the errors that users received, to see if I can improve the error handling (and maybe mail myself a message!). For now, I'm calling the bug worked-around. GB On Wednesday 02 May 2001 04:43 pm, Scott Baker opined: You can look into increasing the number of allowed connections that MySQL will accept... are you using connect or pconnect? At 04:23 PM 5/3/2001 -0700, Gary Bickford wrote: Repost - nobody has any ideas? I've run some stress tests, sending several thousand page requests, and the number of mysql processes goes up and down but over time continues to rise. It's up to about 22 now. When it gets to about 30, every request from the web server will be will fail. Could some of these processes be threads that are orphaned for some reason (perhaps Apache continuing to expire its own processes?) and hang around, idle? I speculate that there is some maximum number of processes and finally MySQL can't won't start another thread/process. GB On Tuesday 01 May 2001 05:26 pm, Gary E Bickford opined: I am running MySQL (3.23.27 at this point) with Apache1.3.12 and PHP3 on a PC running Redhat 6.0. My problem has survived upgrades of all components from earlier versions. Every PHP page has at least one query to a MySQL database for session tracking (home-rolled code, not PHPLib or anything off the shelf) There are also on some pages other queries, to a different database, same server (same mysql). Most of the latter are Phorum queries. Periodically the number of mysql instances that show up in 'ps auxww'1 gets to about 30 and mysql no longer listens to PHP/Apache. However I can still use the mysql shell with no problem, so MySQL is still running but can't hear anything from PHP. The only way to fix it is to run 'apachectl restart' or equivalent. 'graceful' doesn't do it. Im not sure if restarting MySQL instead works. After Apache is restarted, the mysql processes are down to 3 and everybody's happy again. I have been trying for months to figure out what is happening and how to fix it. I had heard at one point that there was a problem with Redhat 5.2 kernel that caused a similar problem, but I upgraded that but no joy. Temporarily I have built a kluge cron job that restarts apache every so often, which worked as long as the server was low volume. But now usage is dramatically increasing due to some new web sites that have been installed and announced to the entire corporation. So the problem is triggered before the restart cleans up the mess. I can't have it restarting every 20 minutes. I've also changed every instance of pconnect() to connect() where I can, but no difference. Can anybody tell me anything useful? I'm supposed to come back with a firm fixit schedule tomorrow morning, so please email me directly as well as on the list - I'm afraid I'll miss it in the volume on the list. If I don't get this fixed very shortly my consulting contract with this company will no doubt begin to fade out
Re: Apache/PHP/MySQL - processes multiply until about 30, then doom
That's very odd... Technically pconnect should be a lot faster, not sure exactly why it's not. The other thing you might want to look at is the MySQL idle timeout (or something like that). That's how long your pconnects stay connected if they don't transfer any traffic. I think it defaults to 30 minutes, which is probably ok. Depending on the traffic of your site. At 09:27 AM 5/4/2001 -0700, Gary Bickford wrote: Thanks for the reply!, Scott! I considered changing the number of allowed connections but I figured this would just defer the problem, as the root problem was the increasing number of connections. Last night I went through the entire website looking for code that used mysql_pconnect() in PHP, which provides 'persistent' connections. I had thought before that I had caught all of these but found another 40 or so files that had either been missed or magically appeared. I converted all those to standard mysql_connect() calls and ran a stress test all night - using wget to fetch 1000 pages as fast as possible from a neighboring machine, over and over. On the server I have a loop running like this: N=1; while [ $N -ge 1 ]; do ps aux|grep mysql |wc; sleep 5; done which shows the number of mysql processes every five seconds or so. I had run this test earlier and over two hours' time the number of connections increased to about 22. After changing all the mysql_pconnect() calls to mysql_connect(), and leaving the wget job running all night (the 'at' job I set up to kill it while I was sleeping failed), the number of connections was still at 5. This involved fetching almost 400,000 pages. So it appears that the increasing number of connections has to do with some persistent connections never being closed, although PHP thought they were. Determining if this is a PHP, MySQL, Apache or Redhat problem is beyond my desired effort and code experience level. At least all parts are open source!! Interestingly, the rate at which wget could fetch pages almost doubled while the server's CPU load dropped from 86% to 77%, which bears out the experience of some others on various PHP lists. Some users get dramatic improvements using mysql_pconnect(), others don't. I will now make another pass at a couple of pages that seemed to be the focus of the errors that users received, to see if I can improve the error handling (and maybe mail myself a message!). For now, I'm calling the bug worked-around. GB On Wednesday 02 May 2001 04:43 pm, Scott Baker opined: You can look into increasing the number of allowed connections that MySQL will accept... are you using connect or pconnect? At 04:23 PM 5/3/2001 -0700, Gary Bickford wrote: Repost - nobody has any ideas? I've run some stress tests, sending several thousand page requests, and the number of mysql processes goes up and down but over time continues to rise. It's up to about 22 now. When it gets to about 30, every request from the web server will be will fail. Could some of these processes be threads that are orphaned for some reason (perhaps Apache continuing to expire its own processes?) and hang around, idle? I speculate that there is some maximum number of processes and finally MySQL can't won't start another thread/process. GB On Tuesday 01 May 2001 05:26 pm, Gary E Bickford opined: I am running MySQL (3.23.27 at this point) with Apache1.3.12 and PHP3 on a PC running Redhat 6.0. My problem has survived upgrades of all components from earlier versions. Every PHP page has at least one query to a MySQL database for session tracking (home-rolled code, not PHPLib or anything off the shelf) There are also on some pages other queries, to a different database, same server (same mysql). Most of the latter are Phorum queries. Periodically the number of mysql instances that show up in 'ps auxww'1 gets to about 30 and mysql no longer listens to PHP/Apache. However I can still use the mysql shell with no problem, so MySQL is still running but can't hear anything from PHP. The only way to fix it is to run 'apachectl restart' or equivalent. 'graceful' doesn't do it. Im not sure if restarting MySQL instead works. After Apache is restarted, the mysql processes are down to 3 and everybody's happy again. I have been trying for months to figure out what is happening and how to fix it. I had heard at one point that there was a problem with Redhat 5.2 kernel that caused a similar problem, but I upgraded that but no joy. Temporarily I have built a kluge cron job that restarts apache every so often, which worked as long as the server was low volume. But now usage is dramatically increasing due to some new web sites that have been installed and announced to the entire corporation. So the problem is triggered before the restart cleans up the mess. I can't have it restarting every 20
Re: Apache/PHP/MySQL - processes multiply until about 30, then doom
At 9:35 AM -0700 5/3/01, Scott Baker wrote: That's very odd... Technically pconnect should be a lot faster, not sure exactly why it's not. The other thing you might want to look at is the MySQL idle timeout (or something like that). That's how long your pconnects stay connected if they don't transfer any traffic. I think it defaults to 30 minutes, which is probably ok. Depending on the traffic of your site. For most databases pconnect() is faster. But it turns out MySQL is so fast at making connections that pconnect() doesn't give much advantage, if any. So regular connect() can be advantageous in terms of not leaving as many connections open. At 09:27 AM 5/4/2001 -0700, Gary Bickford wrote: Thanks for the reply!, Scott! I considered changing the number of allowed connections but I figured this would just defer the problem, as the root problem was the increasing number of connections. Last night I went through the entire website looking for code that used mysql_pconnect() in PHP, which provides 'persistent' connections. I had thought before that I had caught all of these but found another 40 or so files that had either been missed or magically appeared. I converted all those to standard mysql_connect() calls and ran a stress test all night - using wget to fetch 1000 pages as fast as possible from a neighboring machine, over and over. On the server I have a loop running like this: N=1; while [ $N -ge 1 ]; do ps aux|grep mysql |wc; sleep 5; done which shows the number of mysql processes every five seconds or so. I had run this test earlier and over two hours' time the number of connections increased to about 22. After changing all the mysql_pconnect() calls to mysql_connect(), and leaving the wget job running all night (the 'at' job I set up to kill it while I was sleeping failed), the number of connections was still at 5. This involved fetching almost 400,000 pages. So it appears that the increasing number of connections has to do with some persistent connections never being closed, although PHP thought they were. Determining if this is a PHP, MySQL, Apache or Redhat problem is beyond my desired effort and code experience level. At least all parts are open source!! Interestingly, the rate at which wget could fetch pages almost doubled while the server's CPU load dropped from 86% to 77%, which bears out the experience of some others on various PHP lists. Some users get dramatic improvements using mysql_pconnect(), others don't. I will now make another pass at a couple of pages that seemed to be the focus of the errors that users received, to see if I can improve the error handling (and maybe mail myself a message!). For now, I'm calling the bug worked-around. GB On Wednesday 02 May 2001 04:43 pm, Scott Baker opined: You can look into increasing the number of allowed connections that MySQL will accept... are you using connect or pconnect? At 04:23 PM 5/3/2001 -0700, Gary Bickford wrote: Repost - nobody has any ideas? I've run some stress tests, sending several thousand page requests, and the number of mysql processes goes up and down but over time continues to rise. It's up to about 22 now. When it gets to about 30, every request from the web server will be will fail. Could some of these processes be threads that are orphaned for some reason (perhaps Apache continuing to expire its own processes?) and hang around, idle? I speculate that there is some maximum number of processes and finally MySQL can't won't start another thread/process. GB On Tuesday 01 May 2001 05:26 pm, Gary E Bickford opined: I am running MySQL (3.23.27 at this point) with Apache1.3.12 and PHP3 on a PC running Redhat 6.0. My problem has survived upgrades of all components from earlier versions. Every PHP page has at least one query to a MySQL database for session tracking (home-rolled code, not PHPLib or anything off the shelf) There are also on some pages other queries, to a different database, same server (same mysql). Most of the latter are Phorum queries. Periodically the number of mysql instances that show up in 'ps auxww'1 gets to about 30 and mysql no longer listens to PHP/Apache. However I can still use the mysql shell with no problem, so MySQL is still running but can't hear anything from PHP. The only way to fix it is to run 'apachectl restart' or equivalent. 'graceful' doesn't do it. Im not sure if restarting MySQL instead works. After Apache is restarted, the mysql processes are down to 3 and everybody's happy again. I have been trying for months to figure out what is happening and how to fix it. I had heard at one point that there was a problem with Redhat 5.2 kernel that caused a similar problem, but I upgraded that but no joy. Temporarily I have built a kluge cron job that restarts apache every so often, which worked as long
Re: Apache/PHP/MySQL - processes multiply until about 30, then doom
Repost - nobody has any ideas? I've run some stress tests, sending several thousand page requests, and the number of mysql processes goes up and down but over time continues to rise. It's up to about 22 now. When it gets to about 30, every request from the web server will be will fail. Could some of these processes be threads that are orphaned for some reason (perhaps Apache continuing to expire its own processes?) and hang around, idle? I speculate that there is some maximum number of processes and finally MySQL can't won't start another thread/process. GB On Tuesday 01 May 2001 05:26 pm, Gary E Bickford opined: I am running MySQL (3.23.27 at this point) with Apache1.3.12 and PHP3 on a PC running Redhat 6.0. My problem has survived upgrades of all components from earlier versions. Every PHP page has at least one query to a MySQL database for session tracking (home-rolled code, not PHPLib or anything off the shelf) There are also on some pages other queries, to a different database, same server (same mysql). Most of the latter are Phorum queries. Periodically the number of mysql instances that show up in 'ps auxww'1 gets to about 30 and mysql no longer listens to PHP/Apache. However I can still use the mysql shell with no problem, so MySQL is still running but can't hear anything from PHP. The only way to fix it is to run 'apachectl restart' or equivalent. 'graceful' doesn't do it. Im not sure if restarting MySQL instead works. After Apache is restarted, the mysql processes are down to 3 and everybody's happy again. I have been trying for months to figure out what is happening and how to fix it. I had heard at one point that there was a problem with Redhat 5.2 kernel that caused a similar problem, but I upgraded that but no joy. Temporarily I have built a kluge cron job that restarts apache every so often, which worked as long as the server was low volume. But now usage is dramatically increasing due to some new web sites that have been installed and announced to the entire corporation. So the problem is triggered before the restart cleans up the mess. I can't have it restarting every 20 minutes. I've also changed every instance of pconnect() to connect() where I can, but no difference. Can anybody tell me anything useful? I'm supposed to come back with a firm fixit schedule tomorrow morning, so please email me directly as well as on the list - I'm afraid I'll miss it in the volume on the list. If I don't get this fixed very shortly my consulting contract with this company will no doubt begin to fade out!! Thanks in advance, Gary Bickford --- -- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: Apache/PHP/MySQL - processes multiply until about 30, then doom
You can look into increasing the number of allowed connections that MySQL will accept... are you using connect or pconnect? At 04:23 PM 5/3/2001 -0700, Gary Bickford wrote: Repost - nobody has any ideas? I've run some stress tests, sending several thousand page requests, and the number of mysql processes goes up and down but over time continues to rise. It's up to about 22 now. When it gets to about 30, every request from the web server will be will fail. Could some of these processes be threads that are orphaned for some reason (perhaps Apache continuing to expire its own processes?) and hang around, idle? I speculate that there is some maximum number of processes and finally MySQL can't won't start another thread/process. GB On Tuesday 01 May 2001 05:26 pm, Gary E Bickford opined: I am running MySQL (3.23.27 at this point) with Apache1.3.12 and PHP3 on a PC running Redhat 6.0. My problem has survived upgrades of all components from earlier versions. Every PHP page has at least one query to a MySQL database for session tracking (home-rolled code, not PHPLib or anything off the shelf) There are also on some pages other queries, to a different database, same server (same mysql). Most of the latter are Phorum queries. Periodically the number of mysql instances that show up in 'ps auxww'1 gets to about 30 and mysql no longer listens to PHP/Apache. However I can still use the mysql shell with no problem, so MySQL is still running but can't hear anything from PHP. The only way to fix it is to run 'apachectl restart' or equivalent. 'graceful' doesn't do it. Im not sure if restarting MySQL instead works. After Apache is restarted, the mysql processes are down to 3 and everybody's happy again. I have been trying for months to figure out what is happening and how to fix it. I had heard at one point that there was a problem with Redhat 5.2 kernel that caused a similar problem, but I upgraded that but no joy. Temporarily I have built a kluge cron job that restarts apache every so often, which worked as long as the server was low volume. But now usage is dramatically increasing due to some new web sites that have been installed and announced to the entire corporation. So the problem is triggered before the restart cleans up the mess. I can't have it restarting every 20 minutes. I've also changed every instance of pconnect() to connect() where I can, but no difference. Can anybody tell me anything useful? I'm supposed to come back with a firm fixit schedule tomorrow morning, so please email me directly as well as on the list - I'm afraid I'll miss it in the volume on the list. If I don't get this fixed very shortly my consulting contract with this company will no doubt begin to fade out!! Thanks in advance, Gary Bickford --- -- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Scott Baker - Webster Internet - Network Technician 503.266.8253 - [EMAIL PROTECTED] By working faithfully eight hours a day you may eventually get to be boss and work twelve hours a day. - Robert Frost, 1874 - 1963 - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Apache/PHP/MySQL - processes multiply until about 30, then doom
I am running MySQL (3.23.27 at this point) with Apache1.3.12 and PHP3 on a PC running Redhat 6.0. My problem has survived upgrades of all components from earlier versions. Every PHP page has at least one query to a MySQL database for session tracking (home-rolled code, not PHPLib or anything off the shelf) There are also on some pages other queries, to a different database, same server (same mysql). Most of the latter are Phorum queries. Periodically the number of mysql instances that show up in 'ps auxww'1 gets to about 30 and mysql no longer listens to PHP/Apache. However I can still use the mysql shell with no problem, so MySQL is still running but can't hear anything from PHP. The only way to fix it is to run 'apachectl restart' or equivalent. 'graceful' doesn't do it. Im not sure if restarting MySQL instead works. After Apache is restarted, the mysql processes are down to 3 and everybody's happy again. I have been trying for months to figure out what is happening and how to fix it. I had heard at one point that there was a problem with Redhat 5.2 kernel that caused a similar problem, but I upgraded that but no joy. Temporarily I have built a kluge cron job that restarts apache every so often, which worked as long as the server was low volume. But now usage is dramatically increasing due to some new web sites that have been installed and announced to the entire corporation. So the problem is triggered before the restart cleans up the mess. I can't have it restarting every 20 minutes. I've also changed every instance of pconnect() to connect() where I can, but no difference. Can anybody tell me anything useful? I'm supposed to come back with a firm fixit schedule tomorrow morning, so please email me directly as well as on the list - I'm afraid I'll miss it in the volume on the list. If I don't get this fixed very shortly my consulting contract with this company will no doubt begin to fade out!! Thanks in advance, Gary Bickford - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
