Mark Rustad wrote:
On Mar 27, 2007, at 1:38 PM, Jeff Garzik wrote:
Mark Rustad wrote:
reorder any queued operations. Of course if you really care about
your data, you don't really want to turn write cache on.
That's a gross exaggeration. FLUSH CACHE and FUA both ensure data
integrity as well.
Turning write cache off has always been a performance-killing action
on ATA.
Perhaps. Folks I work with would disagree with that, but I am not
enough of a storage expert to judge. My statement mirrors the
judgement of folks I work with that know more than I do.
You can easily demonstrate that disabling write cache on a S-ATA or ATA
drive will drop your large file write performance by 50% - just try
writing 10MB files to disk.
ric
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