[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v2 01/17] cow: make reads go at a decent speed
|
From: |
Eric Blake |
|
Subject: |
Re: [Qemu-devel] [PATCH v2 01/17] cow: make reads go at a decent speed |
|
Date: |
Fri, 19 Jul 2013 06:31:07 -0600 |
|
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 |
On 07/16/2013 10:29 AM, Paolo Bonzini wrote:
> Do not do two reads for each sector; load each sector of the bitmap
> and use bitmap operations to process it.
>
> Writes are still dog slow!
>
> Signed-off-by: Paolo Bonzini <address@hidden>
> ---
> v1->v2: use BDRV_SECTOR_SIZE, not 512 for bitmap array length
>
> block/cow.c | 54 ++++++++++++++++++++++++++++++++----------------------
> 1 file changed, 32 insertions(+), 22 deletions(-)
>
Reviewed-by: Eric Blake <address@hidden>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
signature.asc
Description: OpenPGP digital signature
- [Qemu-devel] [PATCH v2 00/17] Add qemu-img subcommand to dump file metadata, Paolo Bonzini, 2013/07/16
- [Qemu-devel] [PATCH v2 01/17] cow: make reads go at a decent speed, Paolo Bonzini, 2013/07/16
- Re: [Qemu-devel] [PATCH v2 01/17] cow: make reads go at a decent speed,
Eric Blake <=
- [Qemu-devel] [PATCH v2 02/17] cow: make writes go at a less indecent speed, Paolo Bonzini, 2013/07/16
- [Qemu-devel] [PATCH v2 03/17] cow: do not call bdrv_co_is_allocated, Paolo Bonzini, 2013/07/16
- [Qemu-devel] [PATCH v2 04/17] block: make bdrv_co_is_allocated static, Paolo Bonzini, 2013/07/16
- [Qemu-devel] [PATCH v2 08/17] block: make bdrv_has_zero_init return false for copy-on-write-images, Paolo Bonzini, 2013/07/16
- [Qemu-devel] [PATCH v2 09/17] block: introduce bdrv_get_block_status API, Paolo Bonzini, 2013/07/16