From: "Roger Pau Monné" <roger.pau@citrix.com>
To: Arianna Avanzini <avanzini.arianna@gmail.com>,
<konrad.wilk@oracle.com>, <boris.ostrovsky@oracle.com>,
<david.vrabel@citrix.com>, <xen-devel@lists.xenproject.org>,
<linux-kernel@vger.kernel.org>
Cc: <axboe@fb.com>, <felipe.franciosi@citrix.com>
Subject: Re: [Xen-devel] [PATCH RFC 0/4] Multi-queue support for xen-blkfront and xen-blkback
Date: Mon, 15 Sep 2014 11:23:09 +0200 [thread overview]
Message-ID: <5416AFFD.5090207@citrix.com> (raw)
In-Reply-To: <1408706404-6614-1-git-send-email-avanzini.arianna@gmail.com>
El 22/08/14 a les 13.20, Arianna Avanzini ha escrit:
> Hello,
[...]
> The patchset implements in the backend driver the retrieval of information
> about the currently-in-use block layer API for a certain device and about
> the number of available submission queues, if the API turns out to be the
> multi-queue one. The information is then advertised to the frontend driver
> via XenStore. The frontend device can exploit such an information to allocate
> and grant multiple I/O rings that the backend will be able to map.
> The patchset has been tested with fio's IOmeter emulation on a four-cores
> machine with a null_blk device (some results are available here: [2]).
Have you tried if using multiple queues (rings) between blkfront and
blkback even when the underlying device doesn't use MQ increases the
throughput?
Roger.
prev parent reply other threads:[~2014-09-15 9:23 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-22 11:20 [PATCH RFC 0/4] Multi-queue support for xen-blkfront and xen-blkback Arianna Avanzini
2014-08-22 11:20 ` [PATCH RFC 1/4] xen, blkfront: add support for the multi-queue block layer API Arianna Avanzini
2014-08-22 12:25 ` David Vrabel
2014-08-22 15:03 ` Christoph Hellwig
2014-08-22 15:02 ` Christoph Hellwig
2014-09-11 23:54 ` Arianna Avanzini
2014-08-22 11:20 ` [PATCH RFC 2/4] xen, blkfront: factor out flush-related checks from do_blkif_request() Arianna Avanzini
2014-08-22 12:45 ` David Vrabel
2014-08-22 11:20 ` [PATCH RFC 3/4] xen, blkfront: introduce support for multiple hw queues Arianna Avanzini
2014-08-22 12:52 ` David Vrabel
2014-09-11 23:36 ` Arianna Avanzini
2014-09-12 10:50 ` David Vrabel
2014-08-22 11:20 ` [PATCH RFC 4/4] xen, blkback: add support for multiple block rings Arianna Avanzini
2014-08-22 13:15 ` David Vrabel
2014-09-11 23:45 ` Arianna Avanzini
2014-09-12 3:13 ` Bob Liu
2014-09-12 10:24 ` David Vrabel
2014-09-15 9:23 ` Roger Pau Monné [this message]
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=5416AFFD.5090207@citrix.com \
--to=roger.pau@citrix.com \
--cc=avanzini.arianna@gmail.com \
--cc=axboe@fb.com \
--cc=boris.ostrovsky@oracle.com \
--cc=david.vrabel@citrix.com \
--cc=felipe.franciosi@citrix.com \
--cc=konrad.wilk@oracle.com \
--cc=linux-kernel@vger.kernel.org \
--cc=xen-devel@lists.xenproject.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).