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RE: [Qemu-devel] Wipe patch
From: |
ZIGLIO, Frediano, VF-IT |
Subject: |
RE: [Qemu-devel] Wipe patch |
Date: |
Wed, 26 Jul 2006 10:48:20 +0200 |
>
> ZIGLIO, Frediano, VF-IT wrote:
> > Hi,
> > well, this is not a definitive patch but it works. The
> aim is to be
> > able to wipe the disk without allocating entire space. When
> you wipe a
> > disk the program fill disk with zero bytes so disk image increase to
> > allocate all space. This just patch detect null byte writes
> and do not
> > write all zero byte clusters.
>
> This _looks_ like it would severely impact cpu load during a write.
> Have you done any testing to determine if this is likely to
> impact a normal usage scenario?
>
> Brad
No... as I said is not a definitive patch. I mainly wanted to see
comments on this stuff... I'm using it since some weeks and I didn't
note all that difference. Do you know any benchmark I could use?
Frediano