Re: [SQU] squid Pbs when high load, async-io, SMP under linux

Joe Cooper wrote:
>
> If using async i/o, are you using Squid 2.2STABLE5+Henrik's patchset?
> If not, you will have many problems with performance, and stability at
> extremely high loads. 2.3STABLE, and the unpatched 2.2STABLE just are
> not reliable for async i/o operation.
>
> I've written an article about tuning Squid on Linux for performance
> which may be of interest to you:
>
> http://www.swelltech.com/pengies/joe/squidtuneup/t1.html
>
> The new 2.4 Squid will be even better for async once all the bugs are
> worked out.
>
> Increasing the number of threads does improve Squid's request handling
> in some cases, assuming you have the processor time, and memory to
> accomodate the added threads. Our systems run with 32 threads, usually,
> and that seems to be a good average number for the 2.2 Squid on the
> types of hardware we build (1-3 disks, and 500-900MHz processors).
> However, if you increase the threads beyond what is appropriate for your
> hardware, you will find that Squid crashes due to extreme resource
> starvation.

Many, many thanks for your help !

-------------
Fabien SALVI Centre de Ressources Informatiques
                  Archamps, France -- http://www.cri74.org
                  PingOO GNU/linux distribution : http://www.pingoo.org

--
To unsubscribe, see http://www.squid-cache.org/mailing-lists.html