Re: [squid-users] Switched to aufs - Squid eating ~100% CPU?

Fixed in the next snapshot generated in a few minutes..

Users of snapshots 20030106-20030108 may want to upgrade to 20030109 or
later.

A incremental patch to the broken patch can be found at
<url:http://www.squid-cache.org/cgi-bin/cvsweb.cgi/squid/src/fs/aufs/aiops.c.diff?r1=1.12.2.5&r2=1.12.2.6>

This is only a problem of the above Squid-2.5 snapshot versions of aufs
performance patches downloaded in the same time period, not STABLE1.

Regards
Henrik

Pauli Borodulin wrote:
>
> I recently switched from diskd to aufs on quite busy Squid-cache (50-100
> hits/s). After recompiling to 20030108, changing "cache_dir diskd" ->
> "cache_dir aufs" in conf-file and starting Squid again, I noticed that
> Squid was eating 100% CPU even almost without requests. Also loadavg
> seems to get very high even with small amount of requests.
>
> Is this very high CPU utilization normal to aufs?
>
> System is running Linux 2.4.20 on AMD Athlon(tm) XP 2200+ with 2GBs of
> RAM and 60GB's of cachedirs and 150MB of cachemem. System works fine
> when using diskd but somehow slow, like requests are blocking eachothers
> sometimes.
>
> I'm eager to see what happens tomorrow when request count is higher.
>
> --
> Pauli Borodulin <boro@fixel.org>
Received on Wed Jan 08 2003 - 18:12:55 MST