Re: [PATCH V6 0/2] Improve virtio-blk performance

On 08/08/2012 11:09 AM, Asias He wrote:

On 08/07/2012 05:16 PM, Christoph Hellwig wrote:

quoted

On Tue, Aug 07, 2012 at 04:47:13PM +0800, Asias He wrote:

quoted

1) Ramdisk device
      With bio-based IO path, sequential read/write, random read/write
      IOPS boost         : 28%, 24%, 21%, 16%
      Latency improvement: 32%, 17%, 21%, 16%
2) Fusion IO device
      With bio-based IO path, sequential read/write, random read/write
      IOPS boost         : 11%, 11%, 13%, 10%
      Latency improvement: 10%, 10%, 12%, 10%

Do you also have numbers for normal SAS/SATA disks?  The changelog should
have a reall good explanation of why this is optional, and numbers are a
very important part of that.

Yes. I posted the numbers on normal SATA disks a few days ago in the 
thread with Sasha. Will add that data and explanation of why optional to 
the changelog

-- 
Asias