From: Jamie Lokier <jamie@shareable.org>
To: qemu-devel@nongnu.org
Cc: aliguori@us.ibm.com, kvm@vger.kernel.org
Subject: Re: [Qemu-devel] [PATCH 0/3] Refactor AIO to allow multiple AIO implementations
Date: Tue, 23 Sep 2008 11:27:36 +0100 [thread overview]
Message-ID: <20080923102736.GA4619@shareable.org> (raw)
In-Reply-To: <1222125454-21744-1-git-send-email-ryanh@us.ibm.com>
Ryan Harper wrote:
> Addtional work has been done on top of QEMU for KVM and virtio-blk
> devices. While virtio-blk is not yet upstream in QEMU, the AIO
> changes here provide a tremendous performance improvement (from 7.6%
> of native, to 100% of randwrite, and 3.9% of native, to 101.4% of
> native for seq write) for virtio devices with cache=off.
Is the improvement due to using linux-aio instead of (Glibc's) posix-aio?
Thanks,
-- Jamie
next prev parent reply other threads:[~2008-09-23 10:27 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-22 23:17 [Qemu-devel] [PATCH 0/3] Refactor AIO to allow multiple AIO implementations Ryan Harper
2008-09-22 23:17 ` [Qemu-devel] [PATCH 1/3] Only call aio flush handler if set Ryan Harper
2008-09-23 2:38 ` [Qemu-devel] " Anthony Liguori
2008-09-23 14:26 ` Ryan Harper
2008-09-23 14:34 ` Anthony Liguori
2008-09-23 14:41 ` Ryan Harper
2008-09-23 14:50 ` Anthony Liguori
2008-09-22 23:17 ` [Qemu-devel] [PATCH 2/3] Move aio implementation out of raw block driver Ryan Harper
2008-09-23 1:16 ` [Qemu-devel] " Ryan Harper
2008-09-23 2:45 ` Anthony Liguori
2008-09-23 14:39 ` Ryan Harper
2008-09-23 14:40 ` Anthony Liguori
2008-09-23 14:53 ` Gerd Hoffmann
2008-09-23 16:06 ` Anthony Liguori
2008-09-23 18:04 ` Gerd Hoffmann
2008-09-23 18:28 ` Anthony Liguori
2008-09-24 22:31 ` Marcelo Tosatti
2008-09-22 23:17 ` [Qemu-devel] " Ryan Harper
2008-09-23 1:22 ` [Qemu-devel] [PATCH 3/3] Add linux aio implementation for raw block devices Ryan Harper
2008-09-23 3:32 ` [Qemu-devel] Re: [PATCH 0/3] Refactor AIO to allow multiple AIO implementations Anthony Liguori
2008-09-23 14:43 ` Ryan Harper
2008-09-23 14:47 ` Anthony Liguori
2008-09-23 16:09 ` Anthony Liguori
2008-09-23 10:27 ` Jamie Lokier [this message]
2008-10-02 22:41 ` john cooper
2008-10-03 13:33 ` Ryan Harper
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