From: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
To: "'Jens Axboe'" <jens.axboe@oracle.com>
Cc: "Andrew Morton" <akpm@osdl.org>, <linux-kernel@vger.kernel.org>,
"Nick Piggin" <nickpiggin@yahoo.com.au>,
"Nick Piggin" <npiggin@suse.de>
Subject: RE: [PATCH] 4/4 block: explicit plugging
Date: Fri, 5 Jan 2007 14:04:19 -0800 [thread overview]
Message-ID: <000101c73115$72cf2200$ff0da8c0@amr.corp.intel.com> (raw)
In-Reply-To: <20070104143900.GC11203@kernel.dk>
Andrew Morton wrote on Wednesday, January 03, 2007 12:09 AM
> Do you have any benchmarks which got faster with these changes?
Jens Axboe wrote on Wednesday, January 03, 2007 12:22 AM
> I've asked Ken to run this series on some of his big iron, I hope he'll
> have some results for us soonish. I can run some pseudo benchmarks on a
> 4-way here with some simulated storage to demonstrate the locking
> improvements.
> Jens Axboe wrote on Thursday, January 04, 2007 6:39 AM
> > I will just retake the tip of your plug tree and retest.
>
> That would be great! There's a busy race fixed in the current branch,
> make sure that one is included as well.
Good news: the tip of plug tree fixed the FC loop reset issue we are
seeing earlier.
Performance wise, our big db benchmark run came out with 0.14% regression
compare to 2.6.20-rc2. It is small enough that we declared it as noise
level change. Unfortunately our internal profile tool broke on 2.6.20-rc2
so I don't have an execution profile to post.
- Ken
next prev parent reply other threads:[~2007-01-05 22:04 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-03 7:48 [BLOCK] 0/4 explicit io plugging Jens Axboe
2007-01-03 7:48 ` [PATCH] 1/4 qrcu: "quick" srcu implementation Jens Axboe
2007-01-03 7:48 ` [PATCH] 2/4 qrcu: add rcutorture test Jens Axboe
[not found] ` <1167810508576-git-send-email-jens.axboe@oracle.com>
2007-01-03 8:09 ` [PATCH] 4/4 block: explicit plugging Andrew Morton
2007-01-03 8:22 ` Jens Axboe
2007-01-03 21:50 ` Chen, Kenneth W
2007-01-03 22:29 ` Jens Axboe
2007-01-03 22:34 ` Chen, Kenneth W
2007-01-04 14:39 ` Jens Axboe
2007-01-05 22:04 ` Chen, Kenneth W [this message]
2007-01-04 4:35 ` Nick Piggin
2007-01-05 7:23 ` Jens Axboe
2007-01-03 8:31 ` [PATCH] 3/4 qrcu: add documentation Jens Axboe
2007-01-03 9:29 ` Tomas Carnecky
2007-01-03 9:39 ` Jens Axboe
2007-01-03 9:41 ` [PATCH] 4/4 block: explicit plugging Jens Axboe
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