Re: Re[2]: [squid-users] Frequent cache rebuilding

Was this change noted after change of Storage Scheme from "ufs" to "aufs"?

Regards
HASSAN

----- Original Message -----
From: "Andreev Nikita" <nik_at_kemsu.ru>
To: "Chris Robertson" <crobertson_at_gci.net>
Cc: <squid-users_at_squid-cache.org>
Sent: Tuesday, January 27, 2009 13:29
Subject: Re[2]: [squid-users] Frequent cache rebuilding

> For some unknown reason squid stopped using CPU even when I returned
> cache to NFS partition:
> 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 96 2665972 119112 513756 0 0 3 41 91 213 4 7 89
> 0 0
> 1 0 96 2665848 119120 513888 0 0 4 22 1712 584 0 1 98
> 1 0
> 0 0 96 2665664 119144 513992 0 0 18 164 1853 704 1 1 96
> 3 0
> 0 0 96 2665416 119164 513996 0 0 8 42 1935 739 0 2 97
> 1 0
> 0 0 96 2664664 119188 514216 0 0 20 0 1728 682 1 3 94
> 2 0
> 0 0 96 2663920 119228 514640 0 0 18 280 2020 861 1 2 94
> 3 0
> 0 0 96 2663424 119252 514848 0 0 6 70 2063 837 1 2 97
> 1 0
> 0 1 96 2662868 119268 515084 0 0 6 533 1837 773 1 2 96
> 1 0
> 0 0 96 2662752 119276 515156 0 0 0 80 1758 609 0 1 98
> 1 0
> 0 0 96 2661884 119292 515652 0 0 14 0 2035 849 1 2 96
> 2 0
> 0 0 96 2661016 119320 515968 0 0 6 384 1839 659 0 1 96
> 2 0
> 0 0 96 2660272 119324 516252 0 0 0 32 1835 684 1 2 98
> 0 0
> 0 0 96 2659528 119324 516684 0 0 0 30 2021 891 0 2 97
> 0 0
> 0 0 96 2658908 119340 516984 0 0 0 468 1893 662 1 1 97
> 1 0
> 0 0 96 2657980 119368 517488 0 0 36 0 1960 748 0 2 96
> 1 0
>
> It happened yesterday at 17:25 (GMT+7). I was performing some
> reconfiguration (I changed storage array trunks protocol from PAgP to
> LACP) at that time but I don't know the real implication of that.
>
> I will post if squid CPU usage will rise again.
>
>> There has to be some reason for the high load. At 4 mbit/sec a recent
>> CPU should be mostly idle. Let's have a look at your configuration.
>> Use something like...
>
>> egrep -v "^#|^$" /etc/squid.conf
>
>> ...to cut the fluff. If you defined ACLs that use exernal files, please
>> give an indication of what those files contain.
>
> # egrep -v "^#|^$" /etc/squid/squid.conf
> http_port 8080
> hierarchy_stoplist cgi-bin ?
> acl QUERY urlpath_regex cgi-bin \?
> cache deny QUERY
> acl apache rep_header Server ^Apache
> broken_vary_encoding allow apache
> cache_mem 384 MB
> cache_swap_low 90
> cache_swap_high 95
> maximum_object_size_in_memory 256 KB
> cache_replacement_policy heap LFUDA
> memory_replacement_policy heap GDSF
> cache_dir aufs /var/spool/squid 16384 64 1024
> access_log /var/log/squid/access.log squid
> cache_store_log none
> refresh_pattern ^ftp: 1440 20% 10080
> refresh_pattern ^gopher: 1440 0% 1440
> refresh_pattern . 0 20% 4320
> acl all src 0.0.0.0/0.0.0.0
> acl manager proto cache_object
> acl localhost src 127.0.0.1/255.255.255.255
> acl to_localhost dst 127.0.0.0/8
> acl SSL_ports port 443
> acl Safe_ports port 80 # http
> acl Safe_ports port 21 # ftp
> acl Safe_ports port 443 # https
> acl Safe_ports port 70 # gopher
> acl Safe_ports port 210 # wais
> acl Safe_ports port 1025-65535 # unregistered ports
> acl Safe_ports port 280 # http-mgmt
> acl Safe_ports port 488 # gss-http
> acl Safe_ports port 591 # filemaker
> acl Safe_ports port 777 # multiling http
> acl CONNECT method CONNECT
> acl mynet src 34.34.0.0/255.255.240.0 35.35.148.0/255.255.255.0
> acl admins src 34.34.2.0/255.255.255.224 34.34.1.136
> 34.34.1.0/255.255.255.224
> acl culture src 34.34.2.240/255.255.255.240 34.34.1.83
> 34.34.0.104/255.255.255.252
> acl pubrooms src 34.34.1.89
> acl pubrooms_ext url_regex \.mp3 \.avi \.mpeg \.mpg \.wav \.wma \.ogg
> \.aac \.mmf
> acl pubrooms_mime rep_mime_type audio video
> http_access allow manager localhost
> http_access deny manager
> http_access deny !Safe_ports
> http_access deny CONNECT !SSL_ports
> http_access deny pubrooms pubrooms_ext
> http_access allow localhost
> http_access allow mynet
> http_access deny all
> http_reply_access allow manager
> http_reply_access deny pubrooms pubrooms_mime
> http_reply_access allow mynet
> http_reply_access deny all
> icp_access allow mynet
> icp_access deny all
> cache_mgr root_at_mydomain.com
> mail_from squid_at_mydomain.com
> logfile_rotate 4
> append_domain .mydomain.com
> memory_pools_limit 0 MB
> delay_pools 3
> delay_class 1 1
> delay_class 2 1
> delay_class 3 1
> delay_access 1 deny culture
> delay_access 1 allow mynet
> delay_access 1 deny all
> delay_access 2 allow culture
> delay_access 2 deny all
> delay_access 3 allow admins
> delay_access 3 deny all
> delay_parameters 2 -1/-1
> delay_parameters 1 -1/-1
> delay_parameters 3 -1/-1
> coredump_dir /var/spool/squid
>
> Regards,
> Nikita.
>
>
Received on Sun Feb 01 2009 - 06:08:57 MST