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

[Asias He]

On 08/08/2012 11:09 AM, Asias He wrote:
> On 08/07/2012 05:16 PM, Christoph Hellwig wrote:
> > On Tue, Aug 07, 2012 at 04:47:13PM +0800, Asias He wrote:
> > > 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/