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Re: [Qemu-devel] [PATCH v2] block: Change bdrv_commit to handle multipl
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [Qemu-devel] [PATCH v2] block: Change bdrv_commit to handle multiple sectors at once |
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Date: |
Mon, 19 Jul 2010 11:05:36 +0100 |
On Mon, Jul 19, 2010 at 10:59 AM, Kevin Wolf <address@hidden> wrote:
> bdrv_commit copies the image to its backing file sector by sector, which
> is (surprise!) relatively slow. Let's take a larger buffer and handle more
> sectors at once if possible.
>
> With a 1G qcow2 file, this brought the time bdrv_commit takes down from
> 5:06 min to 1:14 min for me.
>
> Signed-off-by: Kevin Wolf <address@hidden>
> ---
Looks good.
Stefan