Re: [squid-users] Howto Clear Cache Periodicaly

On Tue, 2006-04-11 at 16:15 +0100, Neil A. Hillard wrote:
> Guillaume Vachon wrote:
> > On Tue, 2006-04-11 at 10:26 -0400, 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
>
> <snip>
>
> >>> 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.
> >>
> >> ---
> >>
> >> I'm up to try anything
> >> Thanks in advance!
> >>
> >
> > To the last message some line of my config files are missing.. this is
> > my total squid.conf :
> >
> > 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
>
> OK, you may want to read:
>
> http://www.squid-cache.org/Doc/FAQ/FAQ-8.html#ss8.4
>
> with regard to cache_mem. Try setting it back to the default and see if
> you continue to have a problem.
>
> HTH,
>
>
> Neil.

Ok I'll try that thanks for all your information!

Guillaume
>
Received on Tue Apr 11 2006 - 10:36:29 MDT