Messages in this thread | | | Date | Wed, 07 Sep 2011 16:25:50 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: [PATCH RFC 0/7] x86: convert ticketlocks to C and remove duplicate code |
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On 06/29/2011 01:44 PM, Andi Kleen wrote: > Jeremy Fitzhardinge <jeremy@goop.org> writes: >> I couldn't measure a consistent performance difference between the two >> implemenations; there seemed to be +/- ~1% +/-, which is the level of >> variation I see from simply recompiling the kernel with slightly >> different code alignment. > I ran your new locks in my lock tester and I have a similar experience. > There's some variation, but it seems to be in the usual variance. > In some cases the C locks were actually faster.
Is your test harness available?
J
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