Messages in this thread | | | Date | Tue, 16 Feb 2016 20:39:18 -0500 | From | Waiman Long <> | Subject | Re: [PATCH v2 0/4] locking/mutex: Enable optimistic spinning of lock waiter |
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On 02/16/2016 03:51 AM, Peter Zijlstra wrote: > On Fri, Feb 12, 2016 at 12:32:11PM -0500, Waiman Long wrote: >> My own test on a 4-socket E7-4820 v3 system showed a regression of >> about 4% in the high_systime workload with Peter's patch which this >> new patch effectively eliminates. >> >> Testing on an 8-socket Westmere-EX server, however, has performance >> change from -9% to than +140% on the fserver workload of AIM7 >> depending on how the system was set up. > Subject: [lkp] [locking/mutex] aaca135480: -72.9% fsmark.files_per_sec > > My patch also generated the above email. > > Please also test that benchmark against this approach. >
I will ran that benchmark on my patch.
Cheers, Longman
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