Re: [PATCHSET] writeback: convert writeback to unbound workqueue

From: Tejun Heo
Date: Tue Mar 12 2013 - 13:10:46 EST


Hey, Jens.

On Tue, Mar 12, 2013 at 04:06:33PM +0100, Jens Axboe wrote:
> > git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git review-writeback-conversion
>
> I like it, diffstat looks nice too :-)
>
> Have you done any performance testing, or just functional verification?

Only functional test at this point. I'm buliding NUMA awareness to
workqueue and planning on doing comparison of before-wq, after-wq,
after-wq-with-NUMA-awareness. I don't expect any tangible difference
between before-wq and after-wq tho. It would be great if someone can
recommend me a test scenario which can emphasize CPU overhead of
writeback tasks. Any ideas?

Thanks.

--
tejun
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