From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andreas Schwab <schwab@suse.de>
Date: Mon, 05 Dec 2005 23:36:20 +0000
Subject: Re: Reading /proc/stat is slooow
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To: linux-ia64@vger.kernel.org

"Luck, Tony" <tony.luck@intel.com> writes:

> How slow is sloow?

About 20 miliseconds, ten times of what I see with 2.6.13.  It appears to
be that the generation of /proc/stat doesn't scale well any more with the
number of configured CPUs (CONFIG_NR_CPUS is 512 here).  Processes that
monitor /proc/stat add a significant amount of load to the system.

Andreas.

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Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstra=DFe 5, 90409 N=FCrnberg, Germany
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