Re: lmbench context switch regression
From: Nick Piggin
Date: Wed Nov 05 2003 - 18:21:05 EST
Nick Piggin wrote:
I'm seeing quite a large context switch speed regression as reported
by lmbench when I patched from test9 to test9-mm2.
The obvious thing I can see from the patch is the PF_DEAD
change. I don't have time to investigate further tonight though.
lmbench two 0 sized processes context switch times go from around
2.60us on my PIII 650 (UP).
The regression is smaller when going from test9 to test9-bk. About .2us
It does not go away when reverting the PF_DEAD change. Maybe its just lucky
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