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Re: [PATCH v3 2/7] locking/pvqspinlock: Add pending bit support

From Davidlohr Bueso <dave@stgolabs.net>
Newsgroups linux.kernel
Subject Re: [PATCH v3 2/7] locking/pvqspinlock: Add pending bit support
Date 2015-07-27 01:50 +0200
Message-ID <pQDQ5-1a3-3@gated-at.bofh.it> (permalink)
References <pP8EG-1AI-7@gated-at.bofh.it> <pP8EH-1AI-33@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, 2015-07-22 at 16:12 -0400, Waiman Long wrote:
> Using a locking microbenchmark on the same system, the locking
> rates in (kops/s) were:
> 
>   Threads		Rate w/o patch	Rate with patch
>   -------		--------------	---------------
>   2 (same socket)	  6,515,265	  7,077,476
>   2 (diff sockets)	  2,967,145	  4,353,851

At this level stddev would be nice to have, as these sort of things have
a lot of variation.

Out of general interest, are these microbenchmarks available? Would you
care to add something like that to perf-bench? I assume they would
probably be x86 specific.

Thanks,
Davidlohr

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Re: [PATCH v3 2/7] locking/pvqspinlock: Add pending bit support Davidlohr Bueso <dave@stgolabs.net> - 2015-07-27 01:50 +0200

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