Re: why low hit rate in squid compare to others?

Yes, under low traffic rate i got close to offered hit ratio, but the hut
ratio degraded whenever traffic rate increases. I want to stress my proxy
to know the limit it can reach successfully, going to 1000/s. My proxy is
IBM PIII, 1GB RAM. I used the same cahe size for both ISA and Squid, one
thing i did in my squid configuration is that I set the set the maximum size
of object to story on disk to 1MB initially, later change it to 32MB.
Please correct me if I am wrong, my conclusion at the moment is that at
higher request rate I can say ISA look better. If there is any more tuning
that I can do, please let me know. Presently I am using FreeBSD 4.3 TMF.

Regards.

Amisu
----- Original Message -----
From: "Alex Rousskov" <rousskov_at_measurement-factory.com>
To: "A. O. Salam-Alada" <alada_at_ccse.kfupm.edu.sa>
Cc: <users_at_web-polygraph.org>
Sent: Thursday, August 28, 2003 10:59 PM
Subject: Re: why low hit rate in squid compare to others?

>
> Amisu,
>
> Do you get close-to-ideal hit ratio with Squid at much lower
> traffic rates (e.g., 30 req/sec)? If yes, then you are probably
> overloading Squid and it responds by not caching some of the traffic
> to ease the impact of the load. Another possiblity is that Squid does
> not have enough disk cache to store all the files (does ISA server
> have more storage?).
>
> If you get poor hit ratio regardless of the request rate, then you
> most likely have a configuration/compatability problem. Squid should
> show nearly ideal hit ratio with PolyMix workloads under normal
> conditions.
>
> HTH,
>
> Alex.
>
>
> --
> | HTTP performance - Web Polygraph benchmark
> www.measurement-factory.com | HTTP compliance+ - Co-Advisor test suite
> | all of the above - PolyBox appliance
>
>
>
> On Thu, 28 Aug 2003, A. O. Salam-Alada wrote:
>
> > Please can you explain why I am getting low hit rate in Squid proxy
> > compare to MS ISA 2000. Does it mean squid is not very much
> > relieable compare to this. I tuned my linux, when i discovered i got
> > many errors anytime i go to 400/s or more, i changed to a tuned
> > version of FreeBSD, this look very much better but i got low hit
> > rate though i configured my squid as it should.
Received on Thu Aug 28 2003 - 16:45:12 MDT