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

[Roman Kagan]

On Tue, Mar 10, 2015 at 11:51:21AM +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 Gb/sec to
> 235 Gb/sec on my SSD HDD.
> 
> Signed-off-by: Denis V. Lunev <address@hidden>
> CC: Roman Kagan <address@hidden>
> CC: Kevin Wolf <address@hidden>
> CC: Stefan Hajnoczi <address@hidden>
> ---
>  block/parallels.c | 44 ++++++++++++++++++++++++--------------------
>  1 file changed, 24 insertions(+), 20 deletions(-)

Reviewed-by: Roman Kagan <address@hidden>

Roman.