From: Jens Axboe <axboe@kernel.dk>
To: Jeff Moyer <jmoyer@redhat.com>
Cc: linux-kernel@vger.kernel.org,
SCSI Mailing List <linux-scsi@vger.kernel.org>
Subject: Re: [patch/rfc/rft] sd: allocate request_queue on device's local numa node
Date: Mon, 22 Oct 2012 21:19:41 +0200 [thread overview]
Message-ID: <50859C4D.7050309@kernel.dk> (raw)
In-Reply-To: <x49pq4axre1.fsf@segfault.boston.devel.redhat.com>
On 2012-10-22 21:01, Jeff Moyer wrote:
> Hi,
>
> All of the infrastructure is available to allocate a request_queue on a
> particular numa node, but it isn't being utilized at all. Wire up the
> sd driver to allocate the request_queue on the HBA's local numa node.
>
> This is a request for comments and testing (I've built and booted it,
> nothing more). I believe that this should be a performance win, but I
> have no numbers to back it up as yet. Suggestions for workloads to test
> are welcome.
Would seem pointless _not_ to do it, if we have the info. Some
scsi_debug non-delay fio microbenchmark should show it easily. Combine
with perf as needed to verify.
--
Jens Axboe
next prev parent reply other threads:[~2012-10-22 19:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-22 19:01 [patch/rfc/rft] sd: allocate request_queue on device's local numa node Jeff Moyer
2012-10-22 19:19 ` Jens Axboe [this message]
2012-10-23 6:45 ` Bart Van Assche
2012-10-23 16:52 ` Jeff Moyer
2012-10-23 17:42 ` Bart Van Assche
2012-10-23 17:58 ` Jens Axboe
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