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SubjectRe: [PATCH] 64 bit scsi read/write
On Sun, Jul 15, 2001 at 04:32:59PM +0100, Alan Cox wrote:

Another way is to time

write block
write barrier
write same block
write barrier

If the write barrier is working you should be able to measure the
drive rpm 8)

Yeah, I was thinking of doing this with caches turned off, since I
know how to do that, but not a write-barrier.

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