RE: sometimes sluggish performance

From: Dave J Woolley <[email protected]>
Date: Tue, 22 Jun 1999 16:46:40 +0100

> From: Gerben Welter [SMTP:gerben@kernelpanic.thrijswijk.nl]
>
> but that didn't matter. The first few minutes Squid performs as expected,
> but after 15 minutes or so, it becomes partially sluggish. By partially I
> mean that if a requested object is available from the cache then that
> object is served as fast as possible, but if it needs to get it from the
> internet (parent proxy or no parent proxy) then the speed drops
> dramatically and it stalls all the time. I know it isn't a bandwidth
>
        How are you connected to the internet, including device
        drivers, hardware, etc.

> problem, because if i don't use the proxy, I have full bandwidth. But then
> maybe 10 minutes later, i have full bandwidth again using Squid.
>
        You havne't got the traffic shaping features turned on
        by any chance? Is your parent doing traffic shaping?

> I also played with the cache_mem setting. Setting it higher or lower than
> the default 8 MB had no effect. The cache size is 100 MB with 8 1st level
> subdirs and 16 2nd level subdirs. But one thing struck me as odd. The
> following is a partial output of the cachemgr.cgi program:
>
        This shows a very unloaded system, with a lot more file
        descriptors than it needs and a long way from reaching
        steady state memory usage.

> Notice in the Squid Resource Usage section that the 'Maximum Resident
> Size'
> equals 0. Does that mean that squid has no limitation in memory usage? Is
>
        I think that this is a statistic that is not available under
        Linux.
Received on Tue Jun 22 1999 - 09:48:04 MDT

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