Re: Squid hangs weekly on SUN Ultra

From: Anthony Baxter <>
Date: Tue, 31 Mar 1998 13:00:57 +1000

>>> James R Grinter wrote
> Recommendations (in Sun Performance and Tuning, Cockroft), on machines
> with large amounts of memory, are that you should set autoup to a
> larger value ('to a few hundred seconds, if required') so as to reduce
> CPU usage of fsflush in the worst cases.
> Adding 'set autoup=120' in /etc/system, and rebooting would set it
> to a value of 120.
> If you want to mimic the shell script version, you'd want to set
> autoup to 2. It would be interesting to see the difference between
> the approaches.

Well, if you're using async IO on your Solaris squid box, setting autoup
to 120 would really, really, really bite. The async IO gets flushed
every autoup seconds - once our systems got under load, they'd stop
every 30 seconds to flush the async I/O. Setting it to 120 seconds would
(it seems to me) be even worse.

Received on Mon Mar 30 1998 - 19:07:39 MST

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