[Ksummit-2008-discuss] Suggested topic: possible

[Matthew Wilcox]

On Wed, Aug 06, 2008 at 05:16:13PM -0600, Matthew Wilcox wrote:
> On Wed, Aug 06, 2008 at 04:44:16PM -0400, Chris Mason wrote:
> > But there still must be a big difference between 4k requests and 128k
> > requests?
> 
> Yes, there's definitely a sweet spot.  You can even see that with
> ata_ram, fwiw.

Oh ... something I should point out.  If you're doing 4k IOs, you need a
drive capable of 75000 IOPS.  If you're doing 128k IOs, it only has to
be capable of 2400 IOPS.

-- 
Intel are signing my paycheques ... these opinions are still mine
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."