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Re: [Qemu-devel] [PATCH 22/27] block/parallels: improve image reading pe
From: |
Roman Kagan |
Subject: |
Re: [Qemu-devel] [PATCH 22/27] block/parallels: improve image reading performance |
Date: |
Tue, 10 Mar 2015 17:50:58 +0300 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Tue, Mar 10, 2015 at 11:51:16AM +0300, Denis V. Lunev wrote:
> Try to perform IO for the biggest continuous block possible.
> The performance for sequential read is increased from 220 Gb/sec to
> 360 Gb/sec for continous image on my SSD HDD.
>
> Signed-off-by: Denis V. Lunev <address@hidden>
> CC: Roman Kagan <address@hidden>
> CC: Kevin Wolf <address@hidden>
> CC: Stefan Hajnoczi <address@hidden>
> ---
> block/parallels.c | 37 ++++++++++++++++++++++++++++++++-----
> 1 file changed, 32 insertions(+), 5 deletions(-)
Reviewed-by: Roman Kagan <address@hidden>
Roman.
- [Qemu-devel] [PATCH v3 0/27] write/create for Parallels images with reasonable performance, Denis V. Lunev, 2015/03/10
- [Qemu-devel] [PATCH 22/27] block/parallels: improve image reading performance, Denis V. Lunev, 2015/03/10
- Re: [Qemu-devel] [PATCH 22/27] block/parallels: improve image reading performance,
Roman Kagan <=
- [Qemu-devel] [PATCH 25/27] block/parallels: add prealloc-mode and prealloc-size open paramemets, Denis V. Lunev, 2015/03/10
- [Qemu-devel] [PATCH 17/27] block/parallels: move parallels_open/probe to the very end of the file, Denis V. Lunev, 2015/03/10
- [Qemu-devel] [PATCH 16/27] block/parallels: read parallels image header and BAT into single buffer, Denis V. Lunev, 2015/03/10
- [Qemu-devel] [PATCH 10/27] block/parallels: support parallels image creation, Denis V. Lunev, 2015/03/10
- [Qemu-devel] [PATCH 01/27] iotests, parallels: quote TEST_IMG in 076 test to be path-safe, Denis V. Lunev, 2015/03/10
- [Qemu-devel] [PATCH 03/27] block/parallels: switch to bdrv_read, Denis V. Lunev, 2015/03/10
- [Qemu-devel] [PATCH 23/27] block/parallels: create bat_entry_off helper, Denis V. Lunev, 2015/03/10