linux-kernel - Ten percent test

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Date:	Fri, 6 Apr 2007 11:03:33 +1000
From:	Con Kolivas <kernel@...ivas.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Mike Galbraith <efault@....de>,
	linux list <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	ck list <ck@....kolivas.org>
Subject: Ten percent test

On Thursday 05 April 2007 21:54, Ingo Molnar wrote:
>  - fiftyp.c:  noticeable, but alot better than previously!

fiftyp.c seems to have been stumbled across by accident as having an effect 
when Xenofon was trying to recreate Mike's 50% x 3 test case. I suggest a ten 
percent version like the following would be more useful as a test for the 
harmful effect discovered in fiftyp.c. (/me throws in obligatory code style 
change).

Starts 15 processes that sleep ten times longer than they run. Change forks to 
15 times the number of cpus you have and it should work on any size hardware.

-- 
-ck

View attachment "tenp.c" of type "text/x-csrc" (3785 bytes)