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

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.

        -- Brian

On Tuesday 24 July 2001 05:58 pm, Steve Snyder wrote:
> > A solid-state disk? How much space is going to cache_dir and is this
> > run as a proxy or httpd-accelerator?
>
> It is a 512MB device that is devoted soley to Squid. The cache is
> handled like this:
>
> cache_dir aufs /var/spool/squid 320 1 256
>
> > In either case, does increasing the thread count to 24 or 32 make a
> > difference?
>
> I don't know; haven't tried it. It's that what the message is telling
> me, that I have too few threads?
>
> Thanks for the response.
Received on Tue Jul 24 2001 - 20:10:17 MDT