Hi, I've been running squid & c-icap for years, and only recently have I had a severe system slowdown.
My kswapd0 process was at a constant 100% CPU usage level until I forced restarting of both squid and c-icap. I've been using several Squid versions over the years, but the only differences I know of between my previous recent setup that worked and the current setup that has "failed" once (for now) are: - upgraded from 5.0.4-20201125-r5fadc09ee to Version 5.0.5-20210223-r4af19cc24 - set cgroups for both squid and c-icap services with just one setting: cpu.shares 512 - upgraded to c-icap 0.5.8 Given the stressful situation I only had time to notice that kswapd0 was at 100%, that top reported that all swap space was being used, and that the whole server was very sluggish. The additional problem is that the system is a router and uses TPROXY with squid sslbump so I don't think I can virtualize the web proxying services. Hence the use of cgroups to try to contain squid, c-icap and clamav. I have yet to define a cgroup for memory usage. Restarting Squid and c-icap alone (not clamd) immediately solved the kswapd0 "gone wild" issue. Mem usage went back to something like: # free -h total used free shared buff/cache available Mem: 31Gi 9.2Gi 21Gi 48Mi 1.0Gi 21Gi Swap: 35Gi 1.7Gi 33Gi I only have debug_options rotate=1 ALL,1 in my squid config file, and sifting through cache.log doesn't give me any clues. If this were to happen again (not sure when or if) what should I try to search for? Regards, Vieri _______________________________________________ squid-users mailing list squid-users@lists.squid-cache.org http://lists.squid-cache.org/listinfo/squid-users
