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Re: [Qemu-block] [PATCH 1/3] Improve xen_disk batching behaviour
From: |
Anthony PERARD |
Subject: |
Re: [Qemu-block] [PATCH 1/3] Improve xen_disk batching behaviour |
Date: |
Fri, 2 Nov 2018 13:53:15 +0000 |
User-agent: |
Mutt/1.10.1 (2018-07-13) |
On Fri, Nov 02, 2018 at 10:00:59AM +0000, Tim Smith wrote:
> When I/O consists of many small requests, performance is improved by
> batching them together in a single io_submit() call. When there are
> relatively few requests, the extra overhead is not worth it. This
> introduces a check to start batching I/O requests via blk_io_plug()/
> blk_io_unplug() in an amount proportional to the number which were
> already in flight at the time we started reading the ring.
>
> Signed-off-by: Tim Smith <address@hidden>
Acked-by: Anthony PERARD <address@hidden>
--
Anthony PERARD
- Re: [Qemu-block] [Qemu-devel] xen_disk qdevification, (continued)
- Re: [Qemu-block] [Qemu-devel] xen_disk qdevification, Kevin Wolf, 2018/11/08
- Re: [Qemu-block] [Qemu-devel] xen_disk qdevification, Paul Durrant, 2018/11/08
- Re: [Qemu-block] [Qemu-devel] xen_disk qdevification, Paul Durrant, 2018/11/08
- Re: [Qemu-block] [Qemu-devel] xen_disk qdevification, Paul Durrant, 2018/11/09
- Re: [Qemu-block] [Qemu-devel] xen_disk qdevification, Kevin Wolf, 2018/11/09
[Qemu-block] [PATCH 3/3] Avoid repeated memory allocation in xen_disk, Tim Smith, 2018/11/02
[Qemu-block] [PATCH 1/3] Improve xen_disk batching behaviour, Tim Smith, 2018/11/02
[Qemu-block] [PATCH 2/3] Improve xen_disk response latency, Tim Smith, 2018/11/02