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Message-ID: <20160507045636.GC27659@gmail.com>
Date: Sat, 7 May 2016 06:56:36 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Waiman Long <Waiman.Long@....com>
Cc: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
Davidlohr Bueso <dave@...olabs.net>,
Jason Low <jason.low2@...com>,
Dave Chinner <david@...morbit.com>,
Scott J Norton <scott.norton@....com>,
Douglas Hatch <doug.hatch@....com>
Subject: Re: [PATCH v2] locking/rwsem: Add reader-owned state to the owner
field
* Waiman Long <Waiman.Long@....com> wrote:
> On a 4-socket Haswell machine running on a 4.6-rc1 based kernel, the
> fio test with multithreaded randrw and randwrite tests on the same
> file on a XFS partition on top of a NVDIMM were run, the aggregated
> bandwidths before and after the patch were as follows:
>
> Test BW before patch BW after patch % change
> ---- --------------- -------------- --------
> randrw 988 MB/s 1192 MB/s +21%
> randwrite 1513 MB/s 1623 MB/s +7.3%
What testcase/suite is this? I'd like to run this on other machines as well.
Thanks,
Ingo
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