Re: Is TRIM/DISCARD going to be a performance problem?

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On Mon, May 11, 2009 at 02:43:25PM +0200, J??rn Engel wrote:
> Given the hardware braindamage it is relatively sane.  As always, it
> would be much better to fix the problem and not add workarounds, but we
> seem to lack the gods favor this time around.
> 
> Can't anyone explain to the SATA folks that a discard is much closer to
> a write than to a secure erase or some other rare and slow command?

I've heard the ATA committee are working on an NCQ version of TRIM.
Don't expect support soon.

-- 
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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