Re: [squid-users] Wccp, Cache Lost

So.... it answers Adrian's case to simulate the "overload" symptom.

Thx & rgds,

Awie
----- Original Message -----
From: "Joe Cooper" <joe@swelltech.com>
To: "Awie" <awie@eksadata.com>
Cc: "schazad choudary" <schahzadchoudhry@yahoo.com>; "Adrian Chadd"
<adrian@squid-cache.org>; <squid-users@squid-cache.org>
Sent: Monday, April 01, 2002 6:09 PM
Subject: Re: [squid-users] Wccp, Cache Lost

> FWIW: Even a 2501 can be easily overloaded by a moderate Polygraph
> load. I can overload mine with just a few Mbits of traffic (i.e. 45+
> reqs/sec). Low end Ciscos aren't exactly built for speed. ;-)
>
> I don't have enough machines to set up a test of your theory about load
> and losing caches, however. Maybe next time I've got a box on the bench
> for a client I'll test.
>
> Awie wrote:
> > AFAIK, the source of this problem is too HIGH CPU utilization of router
or
> > L3 switch.
> >
> > I have Cisco 2610 with overloaded VoIP traffic (120 voice ports) CPU
reach
> > more than 100% and there were a lot of deferred packet. Then I found
WCCP
> > could not hash and Cache lost. After I replaced router with Cisco 3620
the
> > CPU decrease to 60% and WCCP run very normally.
> >
> > I think the easiest way to simulate high CPU is using low end router
such as
> > 1601 or 800 series with pretty heavy load. However... who will provide
the
> > device? .... ;-)
> >
> > Thx & rgds,
> >
> > Awie
>
> --
> Joe Cooper <joe@swelltech.com>
> http://www.swelltech.com
> Web Caching Appliances and Support
Received on Mon Apr 01 2002 - 03:35:51 MST