From: Andy Whitcroft <apw@canonical.com>
To: Adaptec OEM Raid Solutions <aacraid@adaptec.com>
Cc: Andy Whitcroft <apw@canonical.com>,
Mathias Urlichs <matthias@urlichs.de>,
James Bottomley <James.Bottomley@HansenPartnership.com>,
linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 1/1] Reduce AACRAID hardware queue size
Date: Tue, 23 Jun 2009 12:25:06 +0100 [thread overview]
Message-ID: <1245756306-29023-2-git-send-email-apw@canonical.com> (raw)
In-Reply-To: <1245756306-29023-1-git-send-email-apw@canonical.com>
From: Mathias Urlichs <matthias@urlichs.de>
BugLink: http://bugzilla.kernel.org/show_bug.cgi?id=11120
BugLink: http://bugs.launchpad.net/bugs/249964
Reduce the hardware queue size for the AACRAID controller. This controloler
suffers adapter aborts and scsi resets under high load otherwise:
aacraid: Host adapter abort request (0,0,2,0)
aacraid: Host adapter abort request (0,0,3,0)
aacraid: Host adapter reset request. SCSI hang ?
aacraid: Host adapter abort request (0,0,0,0)
Signed-Off-By: Mathias Urlichs <matthias@urlichs.de>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
---
drivers/scsi/aacraid/aacraid.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index cdbdec9..0d5d036 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -24,7 +24,7 @@
#define AAC_MAX_LUN (8)
#define AAC_MAX_HOSTPHYSMEMPAGES (0xfffff)
-#define AAC_MAX_32BIT_SGBCOUNT ((unsigned short)256)
+#define AAC_MAX_32BIT_SGBCOUNT ((unsigned short)127)
/*
* These macros convert from physical channels to virtual channels
--
1.6.3.rc3.199.g24398
next prev parent reply other threads:[~2009-06-23 11:25 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-23 11:25 [PATCH 0/1] BZ#11120: AACRAID driver stalls under high load Andy Whitcroft
2009-06-23 11:25 ` Andy Whitcroft [this message]
2009-06-23 11:50 ` [PATCH 1/1] Reduce AACRAID hardware queue size Matthias Urlichs
2009-06-23 14:11 ` Andy Whitcroft
2009-06-23 15:31 ` James Bottomley
2009-06-23 15:43 ` Alan Cox
2009-06-23 16:04 ` Matthias Urlichs
2009-07-01 15:58 ` Andy Whitcroft
2009-07-01 16:28 ` Matthias Urlichs
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