From: Ming Lei <ming.lei@canonical.com>
To: Peter Maydell <peter.maydell@linaro.org>,
qemu-devel@nongnu.org, Paolo Bonzini <pbonzini@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Fam Zheng <famz@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: [Qemu-devel] [PATCH 0/3] block: introduce submit I/O at batch
Date: Mon, 30 Jun 2014 17:49:13 +0800 [thread overview]
Message-ID: <1404121756-14544-1-git-send-email-ming.lei@canonical.com> (raw)
Hi,
The commit 580b6b2aa2(dataplane: use the QEMU block layer for I/O)
introduces ~40% throughput regression on virtio-blk dataplane, and
one of causes is that submitting I/O at batch is removed.
This patchset trys to introduce this mechanism on block, at least,
linux-aio can benefit from that.
With these patches, it is observed that thoughout on virtio-blk
dataplane can be improved a lot, see data in commit log of patch
3/3.
It should be possible to apply the batch mechanism to other devices
(such as virtio-scsi) too.
Thanks,
--
Ming Lei
next reply other threads:[~2014-06-30 9:50 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-30 9:49 Ming Lei [this message]
2014-06-30 9:49 ` [Qemu-devel] [PATCH 1/3] block: introduce IO queue APIs Ming Lei
2014-06-30 9:49 ` [Qemu-devel] [PATCH 2/3] block: linux-aio: support submit io_queue Ming Lei
2014-06-30 9:49 ` [Qemu-devel] [PATCH 3/3] dataplane: submit I/O at batch Ming Lei
2014-06-30 11:10 ` [Qemu-devel] [PATCH 0/3] block: introduce " Paolo Bonzini
2014-06-30 12:16 ` Ming Lei
2014-06-30 12:32 ` Paolo Bonzini
2014-06-30 12:49 ` Ming Lei
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