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[Qemu-devel] qmp drive-mirror vs qemu-img convert , drive-mirror really
From: |
Alexandre DERUMIER |
Subject: |
[Qemu-devel] qmp drive-mirror vs qemu-img convert , drive-mirror really slow |
Date: |
Mon, 21 Jan 2013 10:40:26 +0100 (CET) |
Hi list,
I'm doing some speed benchmark between
drive-mirror vs qemu-img convert ,
and drive-mirror seem to be a lot slower.
test:
convert 1 32GB qcow2 file to raw file, local storage (6 disk 15k in raid10 +
raid BBU cache)
time result:
qemu-img : 30sec
drive-mirror (vm is paused, no writes) : 5min
Any idea why drive-mirror is so slow ? (maybe does it use directsync when
mirroring ?)
I think both should have around same speed ?
Best Regards,
Derumier Alexandre
- [Qemu-devel] qmp drive-mirror vs qemu-img convert , drive-mirror really slow,
Alexandre DERUMIER <=