Re: [squid-users] Surfing hangs after period of time
I found the problem, it was regarding the MTU values on my firewall, but at least, I have my squid tunned up now :-) It works flawlessly. Thanx guys for your help. Usrbich wrote: I am worried about the Request memory hit ratios 0.0% part. This means that my memory cache is unaffective, right? Where can I tune this? Cache information for squid: Request Hit Ratios: 5min: 32.8%, 60min: 32.8% Byte Hit Ratios:5min: 25.0%, 60min: 25.0% Request Memory Hit Ratios: 5min: 0.0%, 60min: 0.0% Request Disk Hit Ratios:5min: 50.8%, 60min: 50.8% Storage Swap size: 1401944 KB Storage Mem size: 1144 KB Mean Object Size: 16.21 KB Requests given to unlinkd: 0 Adrian Chadd wrote: On Wed, Apr 30, 2008, Usrbich wrote: In cache.log, all I get is this messages: 2008/04/30 23:58:25| clientReadRequest: FD 121 (10.19.14.58:2014) Invalid Request 2008/04/30 23:58:25| clientReadRequest: FD 112 (10.19.14.58:2013) Invalid Request 2008/04/30 23:58:37| clientReadRequest: FD 170 (10.19.13.54:1317) Invalid Request 2008/04/30 23:58:38| clientReadRequest: FD 121 (10.19.20.55:1235) Invalid Request 2008/04/30 23:58:41| clientReadRequest: FD 169 (10.19.13.54:1318) Invalid Request 2008/04/30 23:58:41| clientReadRequest: FD 169 (10.19.13.54:1319) Invalid Request 2008/04/30 23:58:50| clientReadRequest: FD 126 (10.19.15.55:1662) Invalid Request Is that the cause of my timeout problem? It'd be ncie to know what that is, but no, that in itself shouldn't hang browsing activities. Is this startup output ok? Memory usage for squid via mallinfo(): total space in arena: 13768 KB Ordinary blocks:13023 KB265 blks Small blocks: 0 KB 5 blks Holding blocks: 244 KB 1 blks Free Small blocks: 0 KB Free Ordinary blocks: 744 KB Total in use: 13267 KB 95% Total free: 745 KB 5% Well, squid is using bugger all memory then. Debugging this will require a little more effort.. you will probably have to begin by fiddling with your server stats and determine what else is going on. You may want to run the system call tracer on Squid to see what its doing when it slows down to see whats going on. This sort of stuff is precisely why I suggest people graph as much about their Squid servers as they can! Adrian -- - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support - - $25/pm entry-level VPSes w/ capped bandwidth charges available in WA - -- View this message in context: http://www.nabble.com/Surfing-hangs-after-period-of-time-tp16976682p17083598.html Sent from the Squid - Users mailing list archive at Nabble.com.
Re: [squid-users] Surfing hangs after period of time
I am worried about the Request memory hit ratios 0.0% part. This means that my memory cache is unaffective, right? Where can I tune this? Cache information for squid: Request Hit Ratios: 5min: 32.8%, 60min: 32.8% Byte Hit Ratios:5min: 25.0%, 60min: 25.0% Request Memory Hit Ratios: 5min: 0.0%, 60min: 0.0% Request Disk Hit Ratios:5min: 50.8%, 60min: 50.8% Storage Swap size: 1401944 KB Storage Mem size: 1144 KB Mean Object Size: 16.21 KB Requests given to unlinkd: 0 Adrian Chadd wrote: On Wed, Apr 30, 2008, Usrbich wrote: In cache.log, all I get is this messages: 2008/04/30 23:58:25| clientReadRequest: FD 121 (10.19.14.58:2014) Invalid Request 2008/04/30 23:58:25| clientReadRequest: FD 112 (10.19.14.58:2013) Invalid Request 2008/04/30 23:58:37| clientReadRequest: FD 170 (10.19.13.54:1317) Invalid Request 2008/04/30 23:58:38| clientReadRequest: FD 121 (10.19.20.55:1235) Invalid Request 2008/04/30 23:58:41| clientReadRequest: FD 169 (10.19.13.54:1318) Invalid Request 2008/04/30 23:58:41| clientReadRequest: FD 169 (10.19.13.54:1319) Invalid Request 2008/04/30 23:58:50| clientReadRequest: FD 126 (10.19.15.55:1662) Invalid Request Is that the cause of my timeout problem? It'd be ncie to know what that is, but no, that in itself shouldn't hang browsing activities. Is this startup output ok? Memory usage for squid via mallinfo(): total space in arena: 13768 KB Ordinary blocks:13023 KB265 blks Small blocks: 0 KB 5 blks Holding blocks: 244 KB 1 blks Free Small blocks: 0 KB Free Ordinary blocks: 744 KB Total in use: 13267 KB 95% Total free: 745 KB 5% Well, squid is using bugger all memory then. Debugging this will require a little more effort.. you will probably have to begin by fiddling with your server stats and determine what else is going on. You may want to run the system call tracer on Squid to see what its doing when it slows down to see whats going on. This sort of stuff is precisely why I suggest people graph as much about their Squid servers as they can! Adrian -- - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support - - $25/pm entry-level VPSes w/ capped bandwidth charges available in WA - -- View this message in context: http://www.nabble.com/Surfing-hangs-after-period-of-time-tp16976682p17019406.html Sent from the Squid - Users mailing list archive at Nabble.com.
Re: [squid-users] Surfing hangs after period of time
Usrbich wrote: I have configured parameters like you told me, but still, same thing happens, but now, i have only about 30 MB's of RAM left, it isn't swapping yet... Please help :-( If you are uncomfortable giving squid lots of RAM, by all means reduce it. I'm out of ideas. I asked about the VM controls because thought it might explain the random pausing. Given that VM is a parallel-shared-OS environment. Amos Usrbich wrote: I think there's no control, why do you ask? Amos Jeffries-2 wrote: Usrbich wrote: Hi2all! My users are experiencing problems with squid few hours after it starts. I have following configuration: P4 3GHz, 1.1 GB RAM, CentOS, Squid 2.6. This is a virtual machine and also a DNS server. Number of active users at one time is about 40-50. The problem is, when I start Squid, it works fine for couple of hours, and then the behaviour from the client side is that pages stop to download 10-20 secs, like everything stops, then it starts back and so on. When it stops, I hit refresh button and then it starts to download again. In that time, my free memory is around Hmm, just a random thought. Does this VM have any controls which might suspend the squid OS or network capabilities for any reason? Amos -- Please use Squid 2.6.STABLE19 or 3.0.STABLE4 -- Please use Squid 2.6.STABLE20 or 3.0.STABLE5
Re: [squid-users] Surfing hangs after period of time
Usrbich wrote: Hi2all! My users are experiencing problems with squid few hours after it starts. I have following configuration: P4 3GHz, 1.1 GB RAM, CentOS, Squid 2.6. This is a virtual machine and also a DNS server. Number of active users at one time is about 40-50. The problem is, when I start Squid, it works fine for couple of hours, and then the behaviour from the client side is that pages stop to download 10-20 secs, like everything stops, then it starts back and so on. When it stops, I hit refresh button and then it starts to download again. In that time, my free memory is around 400MB, that's some 45%, it isn't swapping, cpu is low. I believe my configuration is wrong, and need some help tunning it. Parameters are majorly by default values. So, I attach my squid.conf: http_port 10.19.2.3:8080 hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin \? cache deny QUERY acl apache rep_header Server ^Apache broken_vary_encoding allow apache cache_mem 32 MB Pretty low for a machine with 1+ GB RAM. You could probably bump this up to 128 or 256 without trouble. That would let a lot more happen in memory and bypass any storage slow-down. cache_swap_low 90 cache_swap_high 95 maximum_object_size 4096 KB memory_replacement_policy lru cache_dir ufs /var/spool/squid 1500 16 256 access_log /var/log/squid/access.log squid cache_log /var/log/squid/cache.log cache_store_log /var/log/squid/store.log pid_filename /var/run/squid.pid check_hostnames on dns_nameservers 10.19.2.3 195.29.149.196 hosts_file /etc/hosts refresh_pattern ^ftp: 144020% 10080 refresh_pattern ^gopher:14400% 1440 refresh_pattern . 0 20% 4320 acl all src 0.0.0.0/0.0.0.0 acl manager proto cache_object acl localhost src 127.0.0.1/255.255.255.255 acl to_localhost dst 127.0.0.0/8 acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT http_access allow all First thing: with the above line no other controls you wrote below will ever work. http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports acl zbw_network src 10.19.0.0/16 http_access allow zbw_network http_access allow localhost http_access deny all http_reply_access allow all icp_access allow all cache_mgr [EMAIL PROTECTED] mail_from [EMAIL PROTECTED] mail_program postfix visible_hostname nameserver.zbw.intranet snmp_port 1234 delay_class 1 2 delay_access 1 allow zbw_network delay_access 1 deny all delay_parameters 1 -1/-1 128000/164 coredump_dir /var/spool/squid Amos -- Please use Squid 2.6.STABLE19 or 3.0.STABLE4
Re: [squid-users] Surfing hangs after period of time
I think there's no control, why do you ask? Amos Jeffries-2 wrote: Usrbich wrote: Hi2all! My users are experiencing problems with squid few hours after it starts. I have following configuration: P4 3GHz, 1.1 GB RAM, CentOS, Squid 2.6. This is a virtual machine and also a DNS server. Number of active users at one time is about 40-50. The problem is, when I start Squid, it works fine for couple of hours, and then the behaviour from the client side is that pages stop to download 10-20 secs, like everything stops, then it starts back and so on. When it stops, I hit refresh button and then it starts to download again. In that time, my free memory is around Hmm, just a random thought. Does this VM have any controls which might suspend the squid OS or network capabilities for any reason? Amos -- Please use Squid 2.6.STABLE19 or 3.0.STABLE4 -- View this message in context: http://www.nabble.com/Surfing-hangs-after-period-of-time-tp16976682p16982391.html Sent from the Squid - Users mailing list archive at Nabble.com.
Re: [squid-users] Surfing hangs after period of time
I have configured parameters like you told me, but still, same thing happens, but now, i have only about 30 MB's of RAM left, it isn't swapping yet... Please help :-( Usrbich wrote: I think there's no control, why do you ask? Amos Jeffries-2 wrote: Usrbich wrote: Hi2all! My users are experiencing problems with squid few hours after it starts. I have following configuration: P4 3GHz, 1.1 GB RAM, CentOS, Squid 2.6. This is a virtual machine and also a DNS server. Number of active users at one time is about 40-50. The problem is, when I start Squid, it works fine for couple of hours, and then the behaviour from the client side is that pages stop to download 10-20 secs, like everything stops, then it starts back and so on. When it stops, I hit refresh button and then it starts to download again. In that time, my free memory is around Hmm, just a random thought. Does this VM have any controls which might suspend the squid OS or network capabilities for any reason? Amos -- Please use Squid 2.6.STABLE19 or 3.0.STABLE4 -- View this message in context: http://www.nabble.com/Surfing-hangs-after-period-of-time-tp16976682p16988138.html Sent from the Squid - Users mailing list archive at Nabble.com.
Re: [squid-users] Surfing hangs after period of time
In cache.log, all I get is this messages: 2008/04/30 23:58:25| clientReadRequest: FD 121 (10.19.14.58:2014) Invalid Request 2008/04/30 23:58:25| clientReadRequest: FD 112 (10.19.14.58:2013) Invalid Request 2008/04/30 23:58:37| clientReadRequest: FD 170 (10.19.13.54:1317) Invalid Request 2008/04/30 23:58:38| clientReadRequest: FD 121 (10.19.20.55:1235) Invalid Request 2008/04/30 23:58:41| clientReadRequest: FD 169 (10.19.13.54:1318) Invalid Request 2008/04/30 23:58:41| clientReadRequest: FD 169 (10.19.13.54:1319) Invalid Request 2008/04/30 23:58:50| clientReadRequest: FD 126 (10.19.15.55:1662) Invalid Request Is that the cause of my timeout problem? Is this startup output ok? Memory usage for squid via mallinfo(): total space in arena: 13768 KB Ordinary blocks:13023 KB265 blks Small blocks: 0 KB 5 blks Holding blocks: 244 KB 1 blks Free Small blocks: 0 KB Free Ordinary blocks: 744 KB Total in use: 13267 KB 95% Total free: 745 KB 5% Usrbich wrote: I have configured parameters like you told me, but still, same thing happens, but now, i have only about 30 MB's of RAM left, it isn't swapping yet... Please help :-( Usrbich wrote: I think there's no control, why do you ask? Amos Jeffries-2 wrote: Usrbich wrote: Hi2all! My users are experiencing problems with squid few hours after it starts. I have following configuration: P4 3GHz, 1.1 GB RAM, CentOS, Squid 2.6. This is a virtual machine and also a DNS server. Number of active users at one time is about 40-50. The problem is, when I start Squid, it works fine for couple of hours, and then the behaviour from the client side is that pages stop to download 10-20 secs, like everything stops, then it starts back and so on. When it stops, I hit refresh button and then it starts to download again. In that time, my free memory is around Hmm, just a random thought. Does this VM have any controls which might suspend the squid OS or network capabilities for any reason? Amos -- Please use Squid 2.6.STABLE19 or 3.0.STABLE4 -- View this message in context: http://www.nabble.com/Surfing-hangs-after-period-of-time-tp16976682p16992490.html Sent from the Squid - Users mailing list archive at Nabble.com.
Re: [squid-users] Surfing hangs after period of time
On Wed, Apr 30, 2008, Usrbich wrote: In cache.log, all I get is this messages: 2008/04/30 23:58:25| clientReadRequest: FD 121 (10.19.14.58:2014) Invalid Request 2008/04/30 23:58:25| clientReadRequest: FD 112 (10.19.14.58:2013) Invalid Request 2008/04/30 23:58:37| clientReadRequest: FD 170 (10.19.13.54:1317) Invalid Request 2008/04/30 23:58:38| clientReadRequest: FD 121 (10.19.20.55:1235) Invalid Request 2008/04/30 23:58:41| clientReadRequest: FD 169 (10.19.13.54:1318) Invalid Request 2008/04/30 23:58:41| clientReadRequest: FD 169 (10.19.13.54:1319) Invalid Request 2008/04/30 23:58:50| clientReadRequest: FD 126 (10.19.15.55:1662) Invalid Request Is that the cause of my timeout problem? It'd be ncie to know what that is, but no, that in itself shouldn't hang browsing activities. Is this startup output ok? Memory usage for squid via mallinfo(): total space in arena: 13768 KB Ordinary blocks:13023 KB265 blks Small blocks: 0 KB 5 blks Holding blocks: 244 KB 1 blks Free Small blocks: 0 KB Free Ordinary blocks: 744 KB Total in use: 13267 KB 95% Total free: 745 KB 5% Well, squid is using bugger all memory then. Debugging this will require a little more effort.. you will probably have to begin by fiddling with your server stats and determine what else is going on. You may want to run the system call tracer on Squid to see what its doing when it slows down to see whats going on. This sort of stuff is precisely why I suggest people graph as much about their Squid servers as they can! Adrian -- - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support - - $25/pm entry-level VPSes w/ capped bandwidth charges available in WA -
