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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=50859C4D.7050309@kernel.dk \
--to=axboe@kernel.dk \
--cc=jmoyer@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.