You should use cache replacement policy -----Original Message----- From: Guillaume Vachon [mailto:gvachon@xxxxxxx] Sent: Tuesday, April 11, 2006 4:14 PM To: squid-users@xxxxxxxxxxxxxxx Subject: Re: Howto Clear Cache Periodicaly On Tue, 2006-04-11 at 15:49 +0100, Neil A. Hillard wrote: > Guillaume Vachon wrote: > > On Tue, 2006-04-11 at 14:51 +0100, Neil A. Hillard wrote: > >> Hi, > >> > >> mail reformatted to make sense (i.e. please don't top post!) > >> > >>>>> I have a squid that has been caching for like 10 month. It now have an > >>>>> amazing size of 4.5 gig. > >>>> What you have is determined by the cache_dir specifications > >>>> in squid.conf. The size there is taken into account , and SQUID will > >>>> trimm cache dirs automatically if that would be needed. > >>>> > >>>> > >>>>> When browsing on the web, it is now very very > >>>>> slow. I restarted squid with a clean cache. Everything was fine again. I > >>>>> was wondering if there were a way to tell squid to clean cache > >>>>> periodicaly?! So I would not have to do it myself. > >>>>> > >>>> - The idea of a caching proxy is to have a cache, and to benefit > >>>> from that, not clean it. > >>>> I run SQUID with the same cache dir and or squid maintained content > >>>> for more then year without touching it. > >>>> And or touching it alone, if serious SYSTEM or disk problems would occur. > >>>> > >>>> Make sure that your disk access performance, for instance, is adequate > >>>> for the SQUID induced disk I/O load. > >> > > >>> For the computer that is running Squid it is a Dual core 3 ghz, there > >>> is 2 gig of ram. The disk are scsi. I don't think that it is the > >>> machine that is having the probleme. There is no probleme with the > >>> access to disk. > >> If you want better advice you'll need to show here how you've checked > >> that. Have you used iostat, vmstat, etc. You may also want to post you > >> squid.conf (stripped of comments and blank lines). > >> > >> Do you have multiple cache_dirs specified? > >> > >>> There might be solution somewhere. I mean I should not have to reset > >>> my cache. The computer is strong enough. But still it went really > >>> slow (so slow that browsing the web was imposible)and restarting > >>> squid with a new cache solved the problem. What can I do to be sure > >>> that this does not happen again > >> Correct - you should not have to. After all, I have a dual P3-667MHz > >> with 512Mb RAM serving over 3500 clients. Your machine is considerably > >> more powerful. > >> > >> What is the machine doing when it is in this state. Is anything logged > >> in cache.log, anything relevant in syslog? > >> > >> > >> Without more information we can't really offer any advice. > >> > >> > >> Neil. > >> > > > > --- > > > > Here is my squid.conf > > > > pid_filename /opt2/squid-logs/squid.pid > > redirect_program /usr/local/squid/bin/zapchain /usr/local/squid/bin/squidGuard > > "/usr/local/squid/bin/SquidClamAV_Redirector.py > > -c /usr/local/squid/etc/SquidClamAV_Redirector.conf" > > redirect_children 30 > > acl localhost src 127.0.0.1/255.255.255.255 > > acl proxycsbf src 10.0.10.15/255.255.255.255 > > redirector_access deny proxycsbf > > redirector_access deny localhost > > auth_param basic children 5 > > auth_param basic realm Squid proxy-caching web server > > auth_param basic credentialsttl 2 hours > > auth_param basic casesensitive off > > 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 to_localhost dst 127.0.0.0/8 > > acl SSL_ports port 443 563 > > acl Safe_ports port 80 # http > > acl Safe_ports port 21 # ftp > > acl Safe_ports port 443 563 # https, snews > > 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 > > acl our_networks src 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 > > http_access allow our_networks > > http_access deny all > > http_reply_access allow all > > icp_access allow all > > cache_mgr "" > > cache_effective_user squid > > cache_effective_group squid > > visible_hostname "" > > err_html_text toot@xxxxxxxxx > > forwarded_for off > > cachemgr_passwd ******* > > error_directory /usr/local/squid/share/errors/French > > coredump_dir /usr/local/squid/var/cache > > You don't have a cache_dir declared so squid wouldn't start with that > config! > > > >> What is the machine doing when it is in this state. Is anything logged > >> in cache.log, anything relevant in syslog? > > > > Says too much file open in the cache or something like that. > > Please give the exact message as it will help tracing the problem. It > sounds like you may be running out of file descriptors. > > > Neil. > To the last message some line of my config files are missing.. this is my total squid.conf : http_port 8080 icp_port 0 hierarchy_stoplist cgi-bin ? acl MS dstdomain .windowsupdate.com .windowsupdate.microsoft.com .windows.com acl QUERY urlpath_regex cgi-bin \? no_cache deny QUERY no_cache deny MS cache_mem 100 MB cache_dir aufs /opt2/squid-cache/ 5000 16 256 cache_access_log /opt2/squid-logs/access.log cache_log /opt2/squid-logs/cache.log cache_store_log /opt2/squid-logs/store.log pid_filename /opt2/squid-logs/squid.pid redirect_program /usr/local/squid/bin/zapchain /usr/local/squid/bin/squidGuard "/usr/local/squid/bin/SquidClamAV_Redirector.py -c /usr/local/squid/etc/SquidClamAV_Redirector.conf" redirect_children 30 acl localhost src 127.0.0.1/255.255.255.255 acl proxycsbf src 10.0.10.15/255.255.255.255 redirector_access deny proxycsbf redirector_access deny localhost auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours auth_param basic casesensitive off 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 to_localhost dst 127.0.0.0/8 acl SSL_ports port 443 563 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 563 # https, snews 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 acl our_networks src 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 http_access allow our_networks http_access deny all http_reply_access allow all icp_access allow all cache_mgr "" cache_effective_user squid cache_effective_group squid visible_hostname "" err_html_text toot@xxxxxxxxx forwarded_for off cachemgr_passwd ******* error_directory /usr/local/squid/share/errors/French coredump_dir /usr/local/squid/var/cache Disclaimer **************************************************************************************************************************** The information contained in this e-mail, any attached files, and response threads are confidential and may be legally privileged. 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