From: Jens Axboe <axboe@suse.de>
To: Ravikiran G Thirumalai <kiran@scalex86.org>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org,
"Shai Fultheim (Shai@scalex86.org)" <shai@scalex86.org>,
Alok Kataria <alokk@calsoftinc.com>
Subject: Re: [patch 0/4] ide: Break ide_lock to per-hwgroup lock
Date: Tue, 27 Sep 2005 17:58:14 +0200 [thread overview]
Message-ID: <20050927155813.GG2811@suse.de> (raw)
In-Reply-To: <20050927154201.GD3822@localhost.localdomain>
On Tue, Sep 27 2005, Ravikiran G Thirumalai wrote:
> On Tue, Sep 27, 2005 at 05:26:42PM +0200, Jens Axboe wrote:
> > On Tue, Sep 27 2005, Ravikiran G Thirumalai wrote:
> >
> > You should run it eg 10 times on each kernel to get a feel for the
> > variance of the results. Were you testing 2 or 4 disks?
> >
>
> Yes, I was planning to do that, We were testing with 2 disks.
With 2 disks, the 5.5% sounds like an aweful lot. What block size were
the tests run with? To get the file system out of the way, you could run
something as simple as a dd on each device. That should show queueing
contention (which I guess is the prime area of contention) more
isolated. And profiles would still be very interesting to see :-)
--
Jens Axboe
next prev parent reply other threads:[~2005-09-27 15:57 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-06 23:33 [patch 0/4] ide: Break ide_lock to per-hwgroup lock Ravikiran G Thirumalai
2005-09-06 23:37 ` [patch 1/4] ide: Break ide_lock -- Move hwif tuning code after hwif_init Ravikiran G Thirumalai
2005-09-06 23:40 ` [patch 2/4] ide: Break ide_lock -- replace ide_lock with hwgroup->lock in core ide Ravikiran G Thirumalai
2005-09-07 6:33 ` Ravikiran G Thirumalai
2005-09-06 23:42 ` [patch 3/4] ide: Break ide_lock -- change controller drivers Ravikiran G Thirumalai
2005-09-06 23:44 ` [patch 4/4] ide: Break ide_lock -- remove ide_lock from piix driver Ravikiran G Thirumalai
2005-09-07 17:06 ` Alan Cox
2005-09-07 17:50 ` Ravikiran G Thirumalai
2005-09-07 18:24 ` Alan Cox
2005-09-07 9:19 ` [patch 0/4] ide: Break ide_lock to per-hwgroup lock Jens Axboe
2005-09-07 19:27 ` Ravikiran G Thirumalai
2005-09-07 19:34 ` Jens Axboe
2005-09-27 13:36 ` Bartlomiej Zolnierkiewicz
2005-09-27 15:20 ` Ravikiran G Thirumalai
2005-09-27 15:26 ` Jens Axboe
2005-09-27 15:42 ` Ravikiran G Thirumalai
2005-09-27 15:58 ` Jens Axboe [this message]
2005-09-07 17:09 ` Alan Cox
2005-09-07 18:16 ` Ravikiran G Thirumalai
2005-09-07 19:06 ` Alan Cox
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