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Re: [Qemu-devel] [PATCH 27/27] block/parallels: improve image writing pe
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH 27/27] block/parallels: improve image writing performance further |
Date: |
Mon, 18 May 2015 17:33:19 +0100 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Tue, Apr 28, 2015 at 10:47:00AM +0300, Denis V. Lunev wrote:
> Try to perform IO for the biggest continuous block possible.
> All blocks abscent in the image are accounted in the same type
> and preallocation is made for all of them at once.
>
> The performance for sequential write is increased from 200 Mb/sec to
> 235 Mb/sec on my SSD HDD.
>
> Signed-off-by: Denis V. Lunev <address@hidden>
> Reviewed-by: Roman Kagan <address@hidden>
> CC: Kevin Wolf <address@hidden>
> CC: Stefan Hajnoczi <address@hidden>
> ---
> block/parallels.c | 43 +++++++++++++++++++++++--------------------
> 1 file changed, 23 insertions(+), 20 deletions(-)
Reviewed-by: Stefan Hajnoczi <address@hidden>
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