From: William Lee Irwin III <wli@holomorphy.com>
To: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Andrew Morton <akpm@osdl.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org
Subject: Re: 2.6.12-rc6-mm1 & 2K lun testing
Date: Thu, 16 Jun 2005 15:42:30 -0700 [thread overview]
Message-ID: <20050616224230.GD3913@holomorphy.com> (raw)
In-Reply-To: <1118951458.4301.478.camel@dyn9047017072.beaverton.ibm.com>
On Thu, Jun 16, 2005 at 12:50:59PM -0700, Badari Pulavarty wrote:
> Yes. I am using CFQ scheduler. I changed nr_requests to 4 for all
> my devices. I also changed "min_free_kbytes" to 64M.
> Response time is still bad. Here is the vmstat, meminfo, slabinfo
> and profle output. I am not sure why profile output shows
> default_idle(), when vmstat shows 100% CPU sys.
It's because you're sorting on the third field of readprofile(1),
which is pure gibberish. Undoing this mistake will immediately
enlighten you.
Also, turn off slab poisoning when doing performance analyses.
-- wli
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next prev parent reply other threads:[~2005-06-16 22:42 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-15 17:36 2.6.12-rc6-mm1 & 2K lun testing Badari Pulavarty
2005-06-15 18:30 ` Nick Piggin
2005-06-15 18:30 ` Badari Pulavarty
2005-06-15 19:02 ` Nick Piggin
2005-06-15 20:56 ` Badari Pulavarty
2005-06-16 1:48 ` Nick Piggin
2005-06-15 23:23 ` Dave Chinner
2005-06-15 21:39 ` Chen, Kenneth W
2005-06-15 22:35 ` Badari Pulavarty
2005-06-16 7:24 ` Andrew Morton
2005-06-16 19:50 ` Badari Pulavarty
2005-06-16 20:37 ` Andrew Morton
2005-06-16 23:43 ` Badari Pulavarty
2005-06-17 0:51 ` Andrew Morton
2005-06-17 15:10 ` Badari Pulavarty
2005-06-17 21:13 ` Andrew Morton
2005-06-22 0:34 ` 2.6.12-mm1 & 2K lun testing (JFS problem ?) Badari Pulavarty
2005-06-22 1:41 ` William Lee Irwin III
2005-06-22 16:23 ` Badari Pulavarty
2005-06-22 13:50 ` Dave Kleikamp
2005-06-22 16:56 ` Badari Pulavarty
2005-06-22 21:02 ` Badari Pulavarty
2005-06-16 22:42 ` William Lee Irwin III [this message]
2005-06-16 22:25 ` 2.6.12-rc6-mm1 & 2K lun testing Badari Pulavarty
2005-06-16 22:58 ` William Lee Irwin III
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