Messages in this thread | | | Subject | Re: volano ~30% regression with 2.6.33-rc1 & -rc2 | From | Mike Galbraith <> | Date | Tue, 05 Jan 2010 03:44:43 +0100 |
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On Tue, 2010-01-05 at 08:44 +0800, Lin Ming wrote: > On Mon, 2010-01-04 at 20:40 +0800, Arjan van de Ven wrote: > > On Mon, 04 Jan 2010 16:15:58 +0800 > > Lin Ming <ming.m.lin@intel.com> wrote: > > > > > Mike & Peter, > > > > > > Compared with 2.6.32, volano has ~30% regression with 2.6.33-rc1 & > > > -rc2. Testing machine: Tigerton Xeon, 16cpus(4P/4Core), 16G memory > > > > did this show up only on this cpu? > > (since this is a multi-core-without-shared-cache cpu, it could be that > > we get the topology wrong and think cores share cache where they don't) > > Tulsa machine(16cpus, 4P/2Core/HT) also has ~8% regression > and it's now fixed by Mike's patch.
Excellent. Thanks for testing.
-Mike
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