RE: [squid-users] SO_FAIL in store_log under high load

From: Henrik Nordstrom <henrik@dont-contact.us>
Date: Sat, 20 Jan 2007 00:49:45 +0100

fre 2007-01-19 klockan 18:02 -0500 skrev Nguyen, Khanh, INFOT:
> In cache.log has some queue congestion prior to SO_FAIL appearance and
> during SO_FAIL appearance:
>
> 2007/01/18 14:08:27| squidaio_queue_request: WARNING - Queue congestion

No other warnings?

> Should I try to lower the thread number to see if that yields less
> SO_FAIL?

The above message could be a sign that there is too many threads, but in
itself it's a harmless warning. The swapout failure on the other hand is
a sign there maybe is too few threads, or that I/O is overloaded.

If you see swapout failures and no other warnings then the problem is
probably in the load average calculation for the cache dir gets above
1000. See fs/aufs/store_dir_aufs.c storeAufsDirCheckLoadAv

Regards
Henrik

Received on Fri Jan 19 2007 - 16:49:52 MST

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