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H A D | parallels.c | ddd2ef2c Tue Apr 28 07:47:00 GMT 2015 Denis V. Lunev <den@openvz.org> block/parallels: improve image writing performance further
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 <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-28-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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