Re: [squid-users] Only 23% of traf is cached. Config problem?

Le mercredi 29 septembre 2010 15:39:29, Andrei a écrit :
> These are my Squid stats. I have about 23% of cache hits.
> We have 300 users. This is a school environment where most students
> access the same site at the same time for their classroom activity.
> Is there anything I should add or change to make the caching better,
> or is 23% to be expected?
>
> Proxy statistics
> Total amount: requests 263,840
> Total Bandwidth: Byte 2634M
> Proxy efficiency (HIT [kB/sec] / DIRECT [kB/sec]): factor 5.72
> Average speed increase: % 16.58
> TCP response time of 100%% requests: msec 5048
>
> Cache statistics
> Total amount cached: requests 61936
> Request hit rate: % 23.47
> Bandwidth savings: Byte 454M
> Bandwidth savings in Percent (Byte hit rate): % 17.24
> Average cached object size: Byte 7686
> Average direct object size: Byte 11319
> Average object size: Byte 10466
>
> Squid box is 2.4 GHz P4, 1GB memory, 40 GB IDE disk.
> Squid version 3.1.3 on Debian.
>
> Config file:
> acl manager proto cache_object
> acl localhost src 127.0.0.1/32
> acl to_localhost dst 127.0.0.0/8
> acl localnet src 176.16.0.0/21 #176.16.0.-176.16.3.254 range
> acl localnet2 src 192.168.11.0/24 #192.168.11.0-254 range
> acl localnet3 src 192.168.200.0/24 #192.168.200.0-254 range
> 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
> http_access allow manager localhost
> http_access deny manager
> http_access deny !Safe_ports
> http_access deny CONNECT !SSL_ports
> http_access allow localhost
> http_access allow localnet
> http_access allow localnet2
> http_access allow localnet3
> http_access allow all #not restricted because its behind the firewall
> and serving local LAN only. I'm just trying to get this working for
> now...
> icp_access allow all
> htcp_access allow all
> http_port 3128 transparent # ok, transparent proxy, no NATing. Not
> sure what WPAD/PAC is...
> hierarchy_stoplist cgi-bin ?
> access_log /var/log/squid3/access.log squid
> refresh_pattern ^ftp: 1440 20% 10080
> refresh_pattern ^gopher: 1440 0% 1440
> refresh_pattern (cgi-bin|\?) 0 0% 0
> refresh_pattern . 0 40% 40320
> icp_port 3130
> coredump_dir /var/spool/squid3
> refresh_pattern -i \.index.(html|htm)$ 0 40% 10080
> refresh_pattern -i \.(html|htm|css|js)$ 1440 40% 40320
> cache_mgr help_at_mydomain.org
> cache_dir ufs /var/spool/squid3 7000 16 256
> visible_hostname gw.mydomain.org

You cache is good, i see you are using the default squid configuration so
dont worry, 23% is good. According to my master research, a normal cache
should cache about 30%.

You may play with next options:
refresh_patter
caceh_policies
cache_dir

Contact me offline ify ou are more interested :)

LD
Received on Wed Sep 29 2010 - 21:21:22 MDT