Hello, On Fri, Dec 16, 2016 at 5:06 PM, Alex Rousskov <rousskov@xxxxxxxxxxxxxxxxxxxxxxx> wrote: > On 12/16/2016 06:20 AM, Amos Jeffries wrote: >> On 10/12/2016 12:55 a.m., Javier Barroso wrote: >>> We are having trouble with cachemgr performance. Do you know why >>> squidclient could delay 10 seconds on mgr:xxx queries ? >>> >>> I have looked about any timeout, or network error, or something, but I >>> did not find nothing >> >> The idea that comes to mind (for me) is that it may be a queue delay in >> the UDS kernel I/O subsystem if your Squid is processing much traffic >> shared between workers. The SMP coordinator process that arbitrates all >> that plus generates these reports may be heavily loaded with work. > > To test that theory, you can use mgr:xxx queries that target: > > * Coordinator itself (without forwarding to any other kids) > * an idle kid (which can be created for the test if needed) > * N idle kids (which can be created for the test if needed) > * a busy kid > * etc. I had a case where squid (with the same configuration) hangs 20 seconds, and it have configured 4 workers, so may be this is what is happening. Unfortunaly I couldn't get the trace before that such instance was restarted. Thank you very much _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users
