From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Tony Battersby <tonyb@cybernetics.com>
Cc: Quinn Tran <qutran@marvell.com>,
Nilesh Javali <njavali@marvell.com>,
GR-QLogic-Storage-Upstream@marvell.com,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org
Subject: Re: [PATCH] scsi: qla2xxx: Disable ATIO interrupt coalesce for quad port ISP27XX
Date: Thu, 11 Aug 2022 21:58:22 -0400 [thread overview]
Message-ID: <yq1k07emdeg.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <97dcf365-89ff-014d-a3e5-1404c6af511c@cybernetics.com> (Tony Battersby's message of "Wed, 20 Jul 2022 09:43:52 -0400")
Tony,
> This partially reverts commit d2b292c3f6fdef5819a276acd64915bae6384a7f.
>
> For some workloads where the host sends a batch of commands and then
> pauses, ATIO interrupt coalesce can cause some incoming ATIO entries
> to be ignored for extended periods of time, resulting in slow
> performance, timeouts, and aborted commands. So disable interrupt
> coalesce and re-enable the dedicated ATIO MSI-X interrupt.
Applied to 5.20/scsi-staging, thanks!
--
Martin K. Petersen Oracle Linux Engineering
prev parent reply other threads:[~2022-08-12 1:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-20 13:43 [PATCH] scsi: qla2xxx: Disable ATIO interrupt coalesce for quad port ISP27XX Tony Battersby
2022-08-01 23:57 ` Martin K. Petersen
2022-08-03 14:34 ` Himanshu Madhani
2022-08-05 10:09 ` [EXT] " Nilesh Javali
2022-08-12 1:58 ` Martin K. Petersen [this message]
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