RE: [squid-users] cache_mem

> -----Original Message-----
> From: Amos Jeffries [mailto:squid3_at_treenet.co.nz]
> Sent: 21 January 2009 23:42
> To: Chris Robertson
> Cc: squid-users_at_squid-cache.org
> Subject: Re: [squid-users] cache_mem
>
> > Paul Cocker wrote:
> >> Simple one I hope
> >>
> >> Once you have squid up and running and know its memory use and
> >> overall system memory use, should cache_mem be set as a
> percentage of
> >> the free memory available, or should you be leaving a
> large amount of
> >> memory for the use of the OS file cache and keeping squid'
> cache_mem
> >> at a smaller value like 64MB?
> >>
> >
> > 1) Squid's handling of large objects (1MB+) in memory can be CPU
> > intensive.
> >
> > 2) Squid does not pull objects from the disk cache into the
> memory cache.
> >
> > Given those two facts, I use a smaller cache_mem value (64
> or 128 MB)
> > and leave the rest for the OS.
>
> (1) is only relevant to squid-2. Squid-3 handles large file
> in-memory a lot better. But (2) still occurs in both, so it's
> only partial improvement on initial handling.
>
> Amos
>
>

How intensive is intensive? At the moment squid is averaging a mere 2.4%
processor time.

Paul

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Received on Thu Jan 22 2009 - 17:42:22 MST