Re: [squid-users] Wccp, Cache Lost

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
----- Original Message -----
From: "schazad choudary" <schahzadchoudhry@yahoo.com>
To: "Adrian Chadd" <adrian@squid-cache.org>
Cc: <squid-users@squid-cache.org>
Sent: Monday, April 01, 2002 5:04 PM
Subject: Re: [squid-users] Wccp, Cache Lost

> well
>
> log files rotate after every two days. and just a week
> ago i have install these machines , i have around 20
> GB of cache in eache machine wich is 10%.
>
> so what you suggest to do to stop the thing
> hapeening.And one thing more as any pf squid goes ut
> of wccp then take it back to wccp i have to restart
> teh squid,is there any other way.???
>
> regards
>
>
> --- Adrian Chadd <adrian@squid-cache.org> wrote:
> > On Sun, Mar 31, 2002, schazad choudary wrote:
> > > Hi All
> > >
> > > Thanx for being there to help people.
> > >
> > > I have successfully setup wccp and its quality is
> > > improving but the most irritating here ,still i do
> > not
> > > know why after some time one of proxy changed to
> > 0%
> > > in WCCP.
> >
> > This is a known problem with squid's wccpv1
> > implementation.
> > However, the squid developer with some cisco
> > equipment
> > (me) hasn't been able to reproduce this bug! :)
> >
> > Do you rotate your log files? That may be a clue.
> > How big is your cache?
> >
> > > 2: Do u think WCCP is better then route map and in
> > > what sense.
> >
> > Well, when a proxy fails it comes out of the WCCP
> > group and its
> > not easy (!) to load-balance across multiple caches
> > with a
> > route-map to set the next hop..
> >
> >
> >
> > Adrian
> >
>
>
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Received on Mon Apr 01 2002 - 02:52:27 MST