[HACKERS] connections problem
hi i need to connect to by my database more then 100 connections, but after ~20-30 conn, postmaster says me Resource temporarily unavailable, what are this resource ? im using debain with kernel 2.4.23-pre7, on P4 , (postgres 7.4.1) what can be wrong ? ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
Re: [HACKERS] connections problem
hi i need to connect to by my database more then 100 connections, but after ~20-30 conn, postmaster says me Resource temporarily unavailable, what are this resource ? We need more info. What does your postgresql.conf say about max_connections? How much ram do you have? How much shared memory have you allocated? Sincerely, Joshua D. Drake im using debain with kernel 2.4.23-pre7, on P4 , (postgres 7.4.1) what can be wrong ? ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly -- Command Prompt, Inc., home of Mammoth PostgreSQL - S/ODBC - S/JDBC Postgresql support, programming, shared hosting and dedicated hosting. +1-503-222-2783 - [EMAIL PROTECTED] - http://www.commandprompt.com ---(end of broadcast)--- TIP 2: you can get off all lists at once with the unregister command (send unregister YourEmailAddressHere to [EMAIL PROTECTED])
Re: [HACKERS] connections problem
max_connections=200 shared_buffers=2000 ram = 500M + 300M swap hdd = infinite On Fri, 26 Dec 2003, Joshua D. Drake wrote: hi i need to connect to by my database more then 100 connections, but after ~20-30 conn, postmaster says me Resource temporarily unavailable, what are this resource ? We need more info. What does your postgresql.conf say about max_connections? How much ram do you have? How much shared memory have you allocated? Sincerely, Joshua D. Drake im using debain with kernel 2.4.23-pre7, on P4 , (postgres 7.4.1) what can be wrong ? ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly -- Command Prompt, Inc., home of Mammoth PostgreSQL - S/ODBC - S/JDBC Postgresql support, programming, shared hosting and dedicated hosting. +1-503-222-2783 - [EMAIL PROTECTED] - http://www.commandprompt.com ---(end of broadcast)--- TIP 7: don't forget to increase your free space map settings
Re: [HACKERS] connections problem
ivan [EMAIL PROTECTED] writes: i need to connect to by my database more then 100 connections, but after ~20-30 conn, postmaster says me Resource temporarily unavailable, what are this resource ? First bet is that you are running into a maximum-number-of-processes- per-user limit imposed by ulimit -u. It's also possible that you need more RAM or swap space. regards, tom lane ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
Re: [HACKERS] connections problem
Hello, Perhaps you have too many open files? What else is running on this machine? Sincerely, Joshua D. Drake ivan wrote: max_connections=200 shared_buffers=2000 ram = 500M + 300M swap hdd = infinite On Fri, 26 Dec 2003, Joshua D. Drake wrote: hi i need to connect to by my database more then 100 connections, but after ~20-30 conn, postmaster says me Resource temporarily unavailable, what are this resource ? We need more info. What does your postgresql.conf say about max_connections? How much ram do you have? How much shared memory have you allocated? Sincerely, Joshua D. Drake im using debain with kernel 2.4.23-pre7, on P4 , (postgres 7.4.1) what can be wrong ? ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly -- Command Prompt, Inc., home of Mammoth PostgreSQL - S/ODBC - S/JDBC Postgresql support, programming, shared hosting and dedicated hosting. +1-503-222-2783 - [EMAIL PROTECTED] - http://www.commandprompt.com ---(end of broadcast)--- TIP 7: don't forget to increase your free space map settings -- Command Prompt, Inc., home of Mammoth PostgreSQL - S/ODBC - S/JDBC Postgresql support, programming, shared hosting and dedicated hosting. +1-503-222-2783 - [EMAIL PROTECTED] - http://www.commandprompt.com ---(end of broadcast)--- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
Re: [HACKERS] connections problem
.. many others stuf ... the error is : could not fork new process for connection: Resource temporarily unavailable On Fri, 26 Dec 2003, Joshua D. Drake wrote: Hello, Perhaps you have too many open files? What else is running on this machine? Sincerely, Joshua D. Drake ivan wrote: max_connections=200 shared_buffers=2000 ram = 500M + 300M swap hdd = infinite On Fri, 26 Dec 2003, Joshua D. Drake wrote: hi i need to connect to by my database more then 100 connections, but after ~20-30 conn, postmaster says me Resource temporarily unavailable, what are this resource ? We need more info. What does your postgresql.conf say about max_connections? How much ram do you have? How much shared memory have you allocated? Sincerely, Joshua D. Drake im using debain with kernel 2.4.23-pre7, on P4 , (postgres 7.4.1) what can be wrong ? ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly -- Command Prompt, Inc., home of Mammoth PostgreSQL - S/ODBC - S/JDBC Postgresql support, programming, shared hosting and dedicated hosting. +1-503-222-2783 - [EMAIL PROTECTED] - http://www.commandprompt.com ---(end of broadcast)--- TIP 7: don't forget to increase your free space map settings -- Command Prompt, Inc., home of Mammoth PostgreSQL - S/ODBC - S/JDBC Postgresql support, programming, shared hosting and dedicated hosting. +1-503-222-2783 - [EMAIL PROTECTED] - http://www.commandprompt.com ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
Re: [HACKERS] connections problem
ulimit -u = 256 , it's ok, ? On Fri, 26 Dec 2003, Tom Lane wrote: ivan [EMAIL PROTECTED] writes: i need to connect to by my database more then 100 connections, but after ~20-30 conn, postmaster says me Resource temporarily unavailable, what are this resource ? First bet is that you are running into a maximum-number-of-processes- per-user limit imposed by ulimit -u. It's also possible that you need more RAM or swap space. regards, tom lane ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly ---(end of broadcast)--- TIP 6: Have you searched our list archives? http://archives.postgresql.org
Re: [HACKERS] connections problem
ivan [EMAIL PROTECTED] writes: i need to connect to by my database more then 100 connections, but after ~20-30 conn, postmaster says me Resource temporarily unavailable, what are this resource ? ulimit -u = 256 , it's ok, ? Mph. Well, that doesn't seem to be the problem, unless you are starting a whole lot of other processes besides the backends under the same UID. (However: are you sure the postmaster has been started with this same ulimit setting?) It sounds like some system call is failing with EAGAIN, but it's not real clear which one. If you're running 7.4, let's see the verbose form of the error message (see log_error_verbosity, or set psql's VERBOSITY variable). If not, updating to 7.4 might be the easiest way to get more info. regards, tom lane ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
Re: [HACKERS] connections problem
ivan [EMAIL PROTECTED] writes: the error is : could not fork new process for connection: Resource temporarily unavailable We could have saved some time if you'd spelled out the full error message to begin with. This is undoubtedly a kernel-imposed restriction you are running into. I'm not sure if the failure is related to sheer number of processes, number of open files, or RAM/swap space, but one way or another you are trying to create more processes than your kernel will support. It seems moderately unlikely that twenty or thirty Postgres processes would by themselves be able to run the kernel out of resources (although if the problem is related to number of open files, reducing max_files_per_process might help). What else do you have running on this machine? regards, tom lane ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
Re: [HACKERS] connections problem
from log : LOG: could not fork new process for connection: Resource temporarily unavailable LOG: could not fork checkpoint process: Resource temporarily unavailable ulimit -a : core file size(blocks, -c) 0 data seg size (kbytes, -d) unlimited file size (blocks, -f) unlimited max locked memory (kbytes, -l) unlimited max memory size (kbytes, -m) unlimited open files(-n) 2048 pipe size (512 bytes, -p) 8 stack size(kbytes, -s) 15000 cpu time (seconds, -t) unlimited max user processes(-u) 400 virtual memory(kbytes, -v) unlimited On Fri, 26 Dec 2003, Tom Lane wrote: ivan [EMAIL PROTECTED] writes: the error is : could not fork new process for connection: Resource temporarily unavailable We could have saved some time if you'd spelled out the full error message to begin with. This is undoubtedly a kernel-imposed restriction you are running into. I'm not sure if the failure is related to sheer number of processes, number of open files, or RAM/swap space, but one way or another you are trying to create more processes than your kernel will support. It seems moderately unlikely that twenty or thirty Postgres processes would by themselves be able to run the kernel out of resources (although if the problem is related to number of open files, reducing max_files_per_process might help). What else do you have running on this machine? regards, tom lane ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster ---(end of broadcast)--- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
