Re: [PATCH v2] locking/rwsem: Add reader-owned state to the owner field

[Ingo Molnar]

* Waiman Long <Waiman.Long@xxxxxxx> 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