[squid-users] Origin server timeout
Greetings, I have an origin server that timeous up for up to 1 minute during extreme conditions. As a result, time_wait connections on the squid host go through the roof. Can someone please recommend what tunables can be adjusted to fix this? I currently have: peer_connect_timeout set to: 5 seconds Is there anything else that can be done, or should I further reduce the timeout? Thank you in advance!
Re: [squid-users] Origin server timeout
If you're referring to the TIME_WAIT in "netstat -an" then you have to find the "maximum segment lifetime" TCP config knob for your operating system and drop that down. Adrian On Tue, Aug 21, 2007, Frank Ruiz wrote: > Greetings, > > I have an origin server that timeous up for up to 1 minute during > extreme conditions. As a result, time_wait connections on the squid > host go through the roof. > > Can someone please recommend what tunables can be adjusted to fix this? > > I currently have: > peer_connect_timeout > > set to: > 5 seconds > > > > Is there anything else that can be done, or should I further reduce the > timeout? > > Thank you in advance! -- - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support - - $25/pm entry-level bandwidth-capped VPSes available in WA -
Re: [squid-users] Origin server timeout
On tis, 2007-08-21 at 16:09 -0700, Frank Ruiz wrote: > Greetings, > > I have an origin server that timeous up for up to 1 minute during > extreme conditions. As a result, time_wait connections on the squid > host go through the roof. TIME_WAIT sockets stay around for one minue or two after the request/connection has been closed. It's not normally a problem and just how TCP/IP works, but if you run a very high request rate then the server may run out of free ports due to all ports being used by TIME_WAIT sockets. First action to take is to increase the range of free ports. The default varies a lot between different OS:es and versions, from 4K to 30K. TCP/IP allows for up to 60K ports, In Linux echo 1024 65535 >/proc/sys/net/ipv4/ip_local_port_range Regards Henrik
