From: Stefan Hajnoczi <stefanha@redhat.com>
To: Ming Lei <ming.lei@canonical.com>
Cc: Kevin Wolf <kwolf@redhat.com>,
Peter Maydell <peter.maydell@linaro.org>,
Fam Zheng <famz@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
qemu-devel@nongnu.org, Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 00/14] dataplane: optimization and multi virtqueue support
Date: Mon, 4 Aug 2014 11:16:48 +0100 [thread overview]
Message-ID: <20140804101648.GB5784@stefanha-thinkpad.redhat.com> (raw)
In-Reply-To: <1406720388-18671-1-git-send-email-ming.lei@canonical.com>
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On Wed, Jul 30, 2014 at 07:39:33PM +0800, Ming Lei wrote:
> These patches bring up below 4 changes:
>
> - introduce selective coroutine bypass mechanism
> for improving performance of virtio-blk dataplane with
> raw format image
>
> - introduce object allocation pool and apply it to
> virtio-blk dataplane for improving its performance
>
> - linux-aio changes: fixing for cases of -EAGAIN and partial
> completion, increase max events to 256, and remove one unuseful
> fields in 'struct qemu_laiocb'
>
> - support multi virtqueue for virtio-blk dataplane
Please split this series into separate series.
Patch 1-5 - block layer coroutine bypass
These patches are hacky and not correct yet (e.g. you cannot enable
bypass on a per-AioContext basis since multiple devices can share an
IOThread's AioContext and some of them might not be raw, you are
invoking acb's cb() directly instead of via a BH so there may be
reentrancy).
It would be great if cleaning up the block.c aio->co emulation layers
could improve performance.
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next prev parent reply other threads:[~2014-08-04 10:17 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-30 11:39 [Qemu-devel] [PATCH 00/14] dataplane: optimization and multi virtqueue support Ming Lei
2014-07-30 11:39 ` [Qemu-devel] [PATCH 01/15] qemu coroutine: support bypass mode Ming Lei
2014-07-30 13:45 ` Paolo Bonzini
2014-07-30 17:15 ` Ming Lei
2014-07-30 23:37 ` Paolo Bonzini
2014-07-31 3:55 ` Ming Lei
2014-07-31 7:37 ` Benoît Canet
2014-07-31 9:47 ` Ming Lei
2014-07-31 10:45 ` Paolo Bonzini
2014-08-01 13:38 ` Ming Lei
2014-07-31 8:59 ` Ming Lei
2014-07-31 9:15 ` Paolo Bonzini
2014-07-31 10:06 ` Ming Lei
2014-07-31 16:13 ` Ming Lei
2014-07-31 16:30 ` Paolo Bonzini
2014-08-01 2:54 ` Ming Lei
2014-08-01 13:13 ` Stefan Hajnoczi
2014-08-01 13:48 ` Ming Lei
2014-08-01 14:17 ` Paolo Bonzini
2014-08-01 15:21 ` Ming Lei
2014-08-01 14:52 ` Ming Lei
2014-08-01 16:03 ` Stefan Hajnoczi
2014-08-02 2:42 ` Ming Lei
2014-07-30 11:39 ` [Qemu-devel] [PATCH 02/15] qemu aio: prepare for supporting selective bypass coroutine Ming Lei
2014-07-30 11:39 ` [Qemu-devel] [PATCH 03/15] block: support to bypass qemu coroutinue Ming Lei
2014-07-30 11:39 ` [Qemu-devel] [PATCH 04/15] Revert "raw-posix: drop raw_get_aio_fd() since it is no longer used" Ming Lei
2014-07-30 11:39 ` [Qemu-devel] [PATCH 05/15] dataplane: enable selective bypassing coroutine Ming Lei
2014-07-30 11:39 ` [Qemu-devel] [PATCH 06/15] qemu/obj_pool.h: introduce object allocation pool Ming Lei
2014-07-30 11:39 ` [Qemu-devel] [PATCH 07/15] dataplane: use object pool to speed up allocation for virtio blk request Ming Lei
2014-07-30 14:14 ` Paolo Bonzini
2014-07-30 15:09 ` Michael S. Tsirkin
2014-07-31 3:22 ` Ming Lei
2014-07-31 9:18 ` Paolo Bonzini
2014-08-01 7:42 ` Ming Lei
2014-08-04 10:21 ` Stefan Hajnoczi
2014-08-04 11:42 ` Ming Lei
2014-07-30 11:39 ` [Qemu-devel] [PATCH 08/15] virtio: decrease size of VirtQueueElement Ming Lei
2014-07-30 13:51 ` Paolo Bonzini
2014-07-30 14:40 ` Michael S. Tsirkin
2014-07-30 14:50 ` Paolo Bonzini
2014-07-31 2:11 ` Ming Lei
2014-07-31 2:07 ` Ming Lei
2014-07-31 9:38 ` Paolo Bonzini
2014-08-01 3:34 ` Ming Lei
2014-07-30 11:39 ` [Qemu-devel] [PATCH 09/15] linux-aio: fix submit aio as a batch Ming Lei
2014-07-30 13:59 ` Paolo Bonzini
2014-07-30 17:32 ` Ming Lei
2014-07-30 23:41 ` Paolo Bonzini
2014-07-30 11:39 ` [Qemu-devel] [PATCH 10/15] linux-aio: increase max event to 256 Ming Lei
2014-07-30 12:15 ` Eric Blake
2014-07-30 14:00 ` Paolo Bonzini
2014-07-30 17:20 ` Ming Lei
2014-08-04 10:26 ` Stefan Hajnoczi
2014-07-30 11:39 ` [Qemu-devel] [PATCH 11/15] linux-aio: remove 'node' from 'struct qemu_laiocb' Ming Lei
2014-07-30 11:39 ` [Qemu-devel] [PATCH 12/15] hw/virtio-pci: introduce num_queues property Ming Lei
2014-07-30 11:39 ` [Qemu-devel] [PATCH 13/15] hw/virtio/virtio-blk.h: introduce VIRTIO_BLK_F_MQ Ming Lei
2014-07-30 11:39 ` [Qemu-devel] [PATCH 14/15] hw/block/virtio-blk: create num_queues vqs if dataplane is enabled Ming Lei
2014-07-30 14:01 ` Paolo Bonzini
2014-07-30 15:12 ` Michael S. Tsirkin
2014-07-30 15:25 ` Paolo Bonzini
2014-07-31 3:47 ` Ming Lei
2014-07-31 8:52 ` Paolo Bonzini
2014-08-01 3:09 ` Ming Lei
2014-08-01 3:24 ` Ming Lei
2014-08-01 6:10 ` Paolo Bonzini
2014-08-01 7:35 ` Ming Lei
2014-08-01 7:46 ` Paolo Bonzini
2014-07-30 11:39 ` [Qemu-devel] [PATCH 15/15] dataplane: virtio-blk: support mutlti virtqueue Ming Lei
2014-07-30 12:42 ` [Qemu-devel] [PATCH 00/14] dataplane: optimization and multi virtqueue support Christian Borntraeger
2014-08-04 10:16 ` Stefan Hajnoczi [this message]
2014-08-04 10:45 ` Ming Lei
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