From: Chris Mason <mason@suse.com>
To: Andrea Arcangeli <andrea@suse.de>,
Brian Strand <bstrand@switchmanagement.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2x Oracle slowdown from 2.2.16 to 2.4.4
Date: Wed, 11 Jul 2001 13:23:56 -0400 [thread overview]
Message-ID: <145960000.994872235@tiny> (raw)
In-Reply-To: <20010711190821.K3496@athlon.random>
On Wednesday, July 11, 2001 07:08:21 PM +0200 Andrea Arcangeli
<andrea@suse.de> wrote:
> On Wed, Jul 11, 2001 at 09:44:19AM -0700, Brian Strand wrote:
>> Our Oracle configuration is on reiserfs on lvm on Mylex. Our workload
>> is not entirely cached, as we are working against an 8GB table, Oracle
>> is configured to use slightly more than 1GB of memory, and there is
>> always several MB/s of IO going on during our queries. The "working
>> set" of the main table and indexes occupies over 2GB.
>
> As I suspected there is the VM in our way. Also reiserfs could be an
> issue but I am not aware of any regression on the reiserfs side, Chris?
reiserfs has a big O_SYNC penalty right now, which can be fixed by a
transaction tracking patch I posted a month or so ago. It has been tested
by a few people as a large improvement. Brian, I'll update this to 2.4.6
and send along.
-chris
next prev parent reply other threads:[~2001-07-11 17:25 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-11 0:45 2x Oracle slowdown from 2.2.16 to 2.4.4 Brian Strand
2001-07-11 1:15 ` Andrea Arcangeli
2001-07-11 16:44 ` Brian Strand
2001-07-11 17:08 ` Andrea Arcangeli
2001-07-11 17:23 ` Chris Mason [this message]
2001-07-11 23:03 ` Lance Larsh
2001-07-11 23:46 ` Brian Strand
2001-07-12 15:21 ` Lance Larsh
2001-07-12 21:31 ` Hans Reiser
2001-07-12 21:51 ` Chris Mason
2001-07-13 3:00 ` Andrew Morton
2001-07-13 4:17 ` Andrew Morton
2001-07-13 15:36 ` Jeffrey W. Baker
2001-07-13 15:49 ` Andrew Morton
2001-07-16 22:03 ` Stephen C. Tweedie
2001-07-12 0:23 ` Chris Mason
2001-07-12 14:48 ` Lance Larsh
2001-07-12 2:30 ` Andrea Arcangeli
2001-07-12 9:26 ` [lvm-devel] " Andi Kleen
2001-07-12 9:45 ` Andrea Arcangeli
2001-07-12 17:04 ` Andreas Dilger
2001-07-12 18:18 ` Andrea Arcangeli
2001-07-12 22:55 ` Andrea Arcangeli
2001-07-13 7:35 ` Andreas Dilger
2001-07-13 16:07 ` Andrea Arcangeli
2001-07-12 6:12 ` parviz dey
2001-07-11 2:58 ` Jeff V. Merkey
2001-07-11 15:55 ` Brian Strand
2001-07-11 2:59 ` Jeff V. Merkey
[not found] <Pine.LNX.4.21.0107111530170.2342-100000@llarsh-pc3.us.oracle.com.suse.lists.linux.kernel>
2001-07-12 10:14 ` Andi Kleen
2001-07-12 14:22 ` Chris Mason
2001-07-12 16:09 ` Lance Larsh
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