Re: [squid-users] More on "aio_queue_request: WARNING - Queue congestion"

From: Adrian Chadd <adrian@dont-contact.us>
Date: Wed, 25 Jul 2001 00:01:09 -0600

On Tue, Jul 24, 2001, Brian wrote:
> The error means the IO queue has built up to an unusual level. With hard
> drives, the drive can fall behind and leave all of the threads blocked for
> too long. In a case like this, a flash of load is probably building up
> the queue for a moment. More threads would allow more requests in
> progress.
>
> Our squid httpd-accels produced several congestion and overloading
> messages an hour without harm (well... actually it seems to leak file
> descriptors around the overloading point). I finally tweaked it so
> requests wouldn't be saved to disk until squid got at least 2 requests for
> it.

Leaky fds? Can you reproduce it with the latest squid-2.4 snapshot?
that might make it easier for us squid hackers to track down any bug
and squish it.

Adrian
Received on Wed Jul 25 2001 - 00:01:10 MDT

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