Re: [Qemu-devel] [PATCH 27/27] block/parallels: improve image writing performance further

[Stefan Hajnoczi]

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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