[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img conve
From: |
Dmitry Konishchev |
Subject: |
Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated() |
Date: |
Mon, 13 Jun 2011 13:13:06 +0400 |
On Mon, Jun 13, 2011 at 12:26 PM, Stefan Hajnoczi <address@hidden> wrote:
> The optimization is to check allocation metadata instead of
> unconditionally reading and then checking for all zeroes?
Yeah, exactly.
On Mon, Jun 13, 2011 at 12:26 PM, Stefan Hajnoczi <address@hidden> wrote:
> Why introduce a new constant instead of using BDRV_SECTOR_SIZE?
OK, I'll fix this.
On Mon, Jun 13, 2011 at 12:26 PM, Stefan Hajnoczi <address@hidden> wrote:
> "iff" is not a typo. It means "if and only if".
Sorry, I don't know English so good. :) Will revert this.
On Mon, Jun 13, 2011 at 12:26 PM, Stefan Hajnoczi <address@hidden> wrote:
> I think the recursive is_allocated() needs its own function. This
> function is already long/complex enough :).
I haven't done this because in this case I have to pass too lot of
local variables to this function. Just not sure that it'll look
better. But if you mind I surely can do this.
--
Dmitry Konishchev
mailto:address@hidden
- [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(), Dmitry Konishchev, 2011/06/08
- Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(), Stefan Hajnoczi, 2011/06/13
- Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(),
Dmitry Konishchev <=
- Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(), Dmitry Konishchev, 2011/06/14
- Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(), Stefan Hajnoczi, 2011/06/14
- Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(), Dmitry Konishchev, 2011/06/15
- Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(), Stefan Hajnoczi, 2011/06/15
- Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(), Dmitry Konishchev, 2011/06/15
- Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(), Stefan Hajnoczi, 2011/06/15
- Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(), Dmitry Konishchev, 2011/06/15
- Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(), Stefan Hajnoczi, 2011/06/15
- Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(), Dmitry Konishchev, 2011/06/15
- Re: [Qemu-devel] [PATCH] CPU consumption optimization of 'qemu-img convert' using bdrv_is_allocated(), Stefan Hajnoczi, 2011/06/15