From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 15906] serious performance regression in "umount" on ext4 over
LVM
Date: Tue, 4 May 2010 21:34:41 GMT
Message-ID: <201005042134.o44LYfHh023340@demeter.kernel.org>
References:
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
To: linux-ext4@vger.kernel.org
Return-path:
Received: from demeter.kernel.org ([140.211.167.39]:42905 "EHLO
demeter.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
with ESMTP id S932428Ab0EDVem (ORCPT
); Tue, 4 May 2010 17:34:42 -0400
Received: from demeter.kernel.org (localhost.localdomain [127.0.0.1])
by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o44LYfkt023341
(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO)
for ; Tue, 4 May 2010 21:34:41 GMT
In-Reply-To:
Sender: linux-ext4-owner@vger.kernel.org
List-ID:
https://bugzilla.kernel.org/show_bug.cgi?id=15906
keith mannthey changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kmannth@us.ibm.com
--- Comment #7 from keith mannthey 2010-05-04 21:34:38 ---
Eric is spot on.
At 2.6.30 and dm/lvm started supporting barriers, this can cause serious
performance issues depending on your configuration.
Try mounting with the " -o nobarrier " option to see if your performance is
restored.
--
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.