From: Bernhard Schmidt <berni@birkenwald.de>
To: kvm@vger.kernel.org
Subject: linux-aio usable?
Date: Mon, 8 Mar 2010 01:46:27 +0000 (UTC) [thread overview]
Message-ID: <hn1ktj$5gh$1@dough.gmane.org> (raw)
Hi,
sorry for this pretty generic question, I did not find any real pros and
cons on the net anywhere, but I might just have missed them.
In a pure x86_64 environment (~2.6.32 vanilla kernel, 0.12.3 qemu-kvm),
is enabling linux-aio in KVM a good idea? What are the
advantages/disadvantages? Are there any potential pitfalls?
The reason I'm asking is that there has been some traffic on the list
about it, so it seems to be something people want to get working.
qemu-kvm in Ubuntu Lucid is currently not compiled with that option.
I've made a local version with aio and it seems to work fine (and
performs a bit better at first glance).
Is there any reason one should not compile that feature by default?
Does it do anything if not explicitly run with aio=native?
Best Regards,
Bernhard
next reply other threads:[~2010-03-08 1:46 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-08 1:46 Bernhard Schmidt [this message]
2010-03-08 9:10 ` linux-aio usable? Avi Kivity
2010-03-08 9:48 ` Bernhard Schmidt
2010-03-08 9:48 ` Avi Kivity
2010-03-08 14:25 ` Dustin Kirkland
2010-03-08 14:26 ` Avi Kivity
2010-03-08 16:28 ` Anthony Liguori
2010-03-08 16:36 ` Avi Kivity
2010-03-08 13:00 ` Christoph Hellwig
2010-03-08 20:11 ` Michael Tokarev
2010-03-08 20:19 ` Michael Tokarev
2010-03-09 9:08 ` Avi Kivity
2010-03-09 9:19 ` Michael Tokarev
2010-03-09 10:05 ` Avi Kivity
2010-03-09 14:12 ` Christoph Hellwig
2010-03-08 21:27 ` Nikola Ciprich
2010-03-08 21:46 ` Brian Jackson
2010-03-09 9:09 ` Avi Kivity
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