Re: Intel X25-M MLC SSD benchmarks

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On Thu, Dec 11, 2008 at 09:55:56PM -0700, Eric D. Mudama wrote:
> On 12/11/08, Eric D. Mudama <edmudama@xxxxxxxxx> wrote:
> > Out of curiosity, is write cache enabled or disabled on these devices?
> 
> Oops, I just noticed the oflag=direct, that can have a huge
> performance difference depending on the block size.
> 
> What numbers are you getting without oflag=direct?

Without the oflag=direct option, you're measuring the performance of the
Linux page cache.  That's not very interesting.

-- 
Matthew Wilcox				Intel Open Source Technology Centre
"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."
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