> -----Original Message----- > From: Gregori Parker [mailto:gregori@xxxxxxxxxxxxxx] > Sent: Tuesday, February 07, 2006 2:36 PM > To: Squid ML > Subject: RE: Performance problems - need some advice > > > Yes, please keep it on the squid-list...I for one am > interested in this thread. > > I just deployed 3 squid servers in a similar configuration > (reverse-proxy serving large media files)...except each > server of ours is dual 3Ghz Xeon, 64-bit everything, 4GB RAM > and around a TB each of dedicated cache space (aufs on ext2 > with noatime option). They are running Squid 2.5 STABLE12 on > Fedora Core 4 x86_64. Disk performance looks fine to me, but > I'm concerned because top reports that squid is averaging 70% > cpu usage most of the time. > Look into the epoll patch (http://devel.squid-cache.org/projects.html#epoll). It's not "production ready", (or even supported AFAIK) but it did WONDERS for my CPU usage on Linux. Anecdotal "evidence" points to it being very stable. My proxy (not accelerator) server (~60GB/day, 2MB/sec and 160req/sec peaks) has been running it for 4 days, 16 hours and 34 minutes of CPU time over 107 real days without incident. Here is some less anecdotal evidence: http://www.squid-cache.org/mail-archive/squid-users/200504/0422.html YMMV and all that good stuff. > Can anyone recommend techniques for assessing squid > performance? I have no good way of benchmarking our clusters > since SNMP isnt ready quite yet. Please don't mention > cache_mgr, thanks :) > > Chris
