Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758948AbZFWLZ3 (ORCPT ); Tue, 23 Jun 2009 07:25:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755132AbZFWLZQ (ORCPT ); Tue, 23 Jun 2009 07:25:16 -0400 Received: from adelie.canonical.com ([91.189.90.139]:32805 "EHLO adelie.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753697AbZFWLZP (ORCPT ); Tue, 23 Jun 2009 07:25:15 -0400 From: Andy Whitcroft To: Adaptec OEM Raid Solutions Cc: Andy Whitcroft , Mathias Urlichs , James Bottomley , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/1] BZ#11120: AACRAID driver stalls under high load Date: Tue, 23 Jun 2009 12:25:05 +0100 Message-Id: <1245756306-29023-1-git-send-email-apw@canonical.com> X-Mailer: git-send-email 1.6.3.rc3.199.g24398 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 983 Lines: 26 We have had reports of driver stalls on AACRAID drivers under high load. This seems to be related to the ammount of concurrent IO that can be pushed to the controller. Reducing the maximum queue count for this driver sorts this out. For further details see the upstream and Ubuntu bugs: http://bugzilla.kernel.org/show_bug.cgi?id=11120 http://bugs.launchpad.net/bugs/249964 Following this email is a patch from Mathias Urlichs to reduce the queue size. This has been tested and confirmed to fix the issue by a couple of those affected. Patches against Linus' tree. -apw Mathias Urlichs (1): Reduce AACRAID hardware queue size drivers/scsi/aacraid/aacraid.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/