From: Jamie Lokier <jamie@shareable.org>
To: qemu-devel@nongnu.org
Cc: kvm-devel@lists.sourceforge.net,
Anthony Liguori <aliguori@us.ibm.com>,
Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [Qemu-devel] Re: [kvm-devel] [PATCH 1/3] Refactor AIO interface to allow other AIO implementations
Date: Fri, 18 Apr 2008 17:22:13 +0100 [thread overview]
Message-ID: <20080418162212.GB31520@shareable.org> (raw)
In-Reply-To: <4808BCF3.3060200@us.ibm.com>
Anthony Liguori wrote:
> >I'm of the view that '-aio auto' would be a really good option - and
> >when it's proven itself, it should be the default. It could work on
> >all QEMU hosts: it would pick synchronous IO when there is nothing else.
>
> Right now, not specifying the -aio option is equivalent to your proposed
> -aio auto.
>
> I guess I should include an info aio to let the user know what type of
> aio they are using. We can add selection criteria later but
> semantically, not specifying an explicit -aio option allows QEMU to
> choose whichever one it thinks is best.
Great. I guess the next step is to add selection criteria, otherwise
a million Wikis will tell everyone to use '-aio linux' :-)
Do you know what the selection criteria should be - or is there a
document/paper somewhere which says (ideally from benchmarks)? I'm
interested for an unrelated project using AIO - so I'm willing to help
get this right to some extent.
-- Jamie
next prev parent reply other threads:[~2008-04-18 16:22 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-17 19:26 [Qemu-devel] [PATCH 1/3] Refactor AIO interface to allow other AIO implementations Anthony Liguori
2008-04-17 19:26 ` [Qemu-devel] [PATCH 2/3] Split out posix-aio code Anthony Liguori
2008-04-17 19:26 ` [Qemu-devel] [PATCH 3/3] Implement linux-aio backend Anthony Liguori
2008-04-18 15:09 ` [Qemu-devel] " Marcelo Tosatti
2008-04-18 15:18 ` Anthony Liguori
2008-04-18 17:46 ` Marcelo Tosatti
2008-04-17 19:38 ` [Qemu-devel] Re: [kvm-devel] [PATCH 1/3] Refactor AIO interface to allow other AIO implementations Daniel P. Berrange
2008-04-17 19:41 ` Anthony Liguori
2008-04-17 20:00 ` Daniel P. Berrange
2008-04-17 20:05 ` Anthony Liguori
2008-04-18 12:43 ` Jamie Lokier
2008-04-18 15:23 ` Anthony Liguori
2008-04-18 16:22 ` Jamie Lokier [this message]
2008-04-18 16:32 ` [kvm-devel] [Qemu-devel] " Avi Kivity
2008-04-20 15:49 ` Jamie Lokier
2008-04-20 18:43 ` Avi Kivity
2008-04-20 23:39 ` Jamie Lokier
2008-04-21 6:39 ` Avi Kivity
2008-04-21 12:10 ` Jamie Lokier
2008-04-22 8:10 ` Avi Kivity
2008-04-22 14:28 ` Jamie Lokier
2008-04-22 14:53 ` Anthony Liguori
2008-04-22 15:05 ` Avi Kivity
2008-04-22 15:23 ` Jamie Lokier
2008-04-22 15:12 ` Jamie Lokier
2008-04-22 15:03 ` Avi Kivity
2008-04-22 15:36 ` Jamie Lokier
2008-05-02 16:37 ` Antonio Vargas
2008-05-02 17:18 ` Jamie Lokier
2008-05-02 17:52 ` Anthony Liguori
2008-05-02 18:24 ` Jamie Lokier
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