Re: [squid-users] no load on squid box - yet I get squidaio_queue_request CONGESTION

From: Henrik Nordstrom <>
Date: Tue, 13 Nov 2001 08:11:28 +0100

Klavs Klavsen wrote:
> why do I get this congestion WARNING.. is it because i just started the
> squid box?
> I have 350 aio processes..

There is little point in going much above the default. In fact it may be
counter-productive. Having 350 threads is certainly a total overkill and
may have a negative impact on performance, especially latency.

> 2001/11/12 19:00:22| squidaio_queue_request: WARNING - Queue congestion

How many disks do you have, and how many requests/second are hitting the

If you have a populated cache of hot objects then it may be expected to
see some of these if you cold-start it and suddenly give it a huge flow
of requests, even if the request rate is otherwise within what the
drives can handle.

Henrik Nordström
Squid Hacker
Received on Tue Nov 13 2001 - 00:47:43 MST

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