What does cachemgr say? In particular what's the contents of the "general information" and the "filedescriptor allocation" pages? On Sun, Apr 19, 2015 at 11:58 AM, Abdelouahed Haitoute <ahaitoute@xxxxxxxx> wrote: > Hello, > > I've got the following setup, each application on its own virtual machine: > > Client (sends http-requests to proxy)--> Squid (sends http-requests to apache > based on destination IP and round robin to multiple apache machines) --> > Apache (setting up a two way ssl to the requested server) --> HTTPS-server > > This setup works great, and I have the Apache and the HTTPS-server its > performance tuned. Both can handle 2000 concurrent connections of file sizes > up to 10MB. > > Unfortunately I haven't been successful with the Squid-server. After a while > I'm getting the following error messages in the log: > 1429432828.200 62854 10.10.7.16 TCP_MISS_ABORTED/000 0 GET > http://https.example.com/index.html - ROUNDROBIN_PARENT/192.168.0.20 - > > The Squid virtual machine contains the following: > CentOS 7.1 with latest updates > Squid Cache: Version 3.3.8 > CPU: Intel Xeon E312xx (Sandy Bridge) - 1799.998 MHz (4 cores) > Memory: 4096 MiB > Harddisk: 10 GiB, SCSI, raw, cache none > > When I execute a performance test with 2000 concurrent connections handling > a file size of 10KB on each request. > # ab -n 10000 -c 2000 -X 10.10.7.15:3128 http://https.example.com/index.html > This is ApacheBench, Version 2.3 <$Revision: 1430300 $> > Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ > Licensed to The Apache Software Foundation, http://www.apache.org/ > > Benchmarking https.rinis.nl [through 10.10.7.15:3128] (be patient) > Completed 1000 requests > Completed 2000 requests > Completed 3000 requests > Completed 4000 requests > Completed 5000 requests > Completed 6000 requests > Completed 7000 requests > Completed 8000 requests > apr_pollset_poll: The timeout specified has expired (70007) > Total of 8610 requests completed > > I have the command "vmstat 5" running on the squid server: > procs -----------memory---------- ---swap-- -----io---- -system-- > ------cpu----- > r b swpd free buff cache si so bi bo in cs us sy id > wa st > 2 0 0 3823916 764 124992 0 0 519 26 237 503 2 3 92 > 3 0 > 0 0 0 3823744 764 125072 0 0 0 0 44 79 0 0 100 > 0 0 > 0 0 0 3823776 764 125044 0 0 0 2 39 70 0 0 100 > 0 0 > 0 0 0 3729540 764 139116 0 0 1 0 2145 257 1 2 97 > 0 0 > 0 0 0 3728432 764 139888 0 0 0 46 2297 594 1 1 97 > 0 0 > 0 0 0 3726484 764 140892 0 0 0 39 2869 581 2 1 97 > 0 0 > 0 0 0 3725528 764 141376 0 0 0 0 2843 648 2 2 96 > 0 0 > 0 0 0 3724980 764 142008 0 0 0 69 2824 529 2 1 97 > 0 0 > 0 0 0 3724584 764 142540 0 0 0 0 2742 472 2 1 97 > 0 0 > 0 0 0 3723696 764 143004 0 0 0 0 2511 577 2 1 97 > 0 0 > 0 0 0 3722840 764 143200 0 0 0 12 884 228 1 1 99 > 0 0 > 0 0 0 3722704 764 142900 0 0 0 0 136 127 0 0 100 > 0 0 > 0 0 0 3722504 764 142744 0 0 0 0 40 70 0 0 100 > 0 0 > 0 0 0 3722456 764 142784 0 0 0 114 37 68 0 0 100 > 0 0 > 0 0 0 3722208 764 142832 0 0 0 0 41 68 0 0 100 > 0 0 > 0 0 0 3722480 764 142280 0 0 0 0 179 82 0 0 100 > 0 0 > 0 0 0 3722544 764 142140 0 0 0 7 41 75 0 0 100 > 0 0 > procs -----------memory---------- ---swap-- -----io---- -system-- > ------cpu----- > r b swpd free buff cache si so bi bo in cs us sy id > wa st > 1 0 0 3722544 764 142136 0 0 0 0 36 67 0 0 100 > 0 0 > 0 0 0 3722996 764 141552 0 0 0 0 42 75 0 0 100 > 0 0 > 0 0 0 3722980 764 141568 0 0 0 0 37 68 0 0 100 > 0 0 > 0 0 0 3723028 764 141524 0 0 0 0 36 66 0 0 100 > 0 0 > 0 0 0 3736816 764 130352 0 0 0 0 809 114 0 0 99 > 0 0 > 0 0 0 3737544 764 130268 0 0 0 41 42 74 0 0 100 > 0 0 > > It looks like the hardware has enough resources during the benchmark test. > > I've got the following squid.conf running: > cache_peer 192.168.0.18 parent 3128 0 round-robin no-query no-digest > cache_peer 192.168.0.20 parent 3128 0 round-robin no-query no-digest > > acl development_net dst 192.168.0.0/24 > cache_peer_access 192.168.0.18 allow development_net > cache_peer_access 192.168.0.20 allow development_net > > never_direct allow all > cache deny all > > maximum_object_size_in_memory 16 MB > cache_mem 2048 MB > > The squid must not cache at all. > > Any help is welcome. > > Abdelouahed > > _______________________________________________ > squid-users mailing list > squid-users@xxxxxxxxxxxxxxxxxxxxx > http://lists.squid-cache.org/listinfo/squid-users > -- Francesco _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users
