Re: [PATCH 0/11] Per-bdi writeback flusher threads v9

Jens Axboe
2009-06-05T19:16:20Z

On Fri, Jun 05 2009, Zhang, Yanmin wrote:
> On Thu, 2009-06-04 at 17:20 +0200, Frederic Weisbecker wrote:
> > Hi,
> >
> >
> > On Thu, May 28, 2009 at 01:46:33PM +0200, Jens Axboe wrote:
> > > Hi,
> > >
> > > Here's the 9th version of the writeback patches. Changes since v8:
>
> > I've just tested it on UP in a single disk.
> >
> > I've run two parallels dbench tests on two partitions and
> > tried it with this patch and without.
> I also tested V9 with multiple-dbench workload by starting multiple
> dbench tasks and every task has 4 processes to do I/O on one partition (file
> system). Mostly I use JBODs which have 7/11/13 disks.
>
> I didn't find result regression between ???vanilla and V9 kernel on
> this workload.

Ah that's good, thanks for that result as well :-)

--
Jens Axboe