Re: [PATCH] speed up SATA

From: Nick Piggin
Date: Sun Mar 28 2004 - 01:58:05 EST

Eric D. Mudama wrote:
On Sun, Mar 28 at 9:37, Nick Piggin wrote:

I think 32MB is too much. You incur latency and lose
scheduling grainularity. I bet returns start diminishing
pretty quickly after 1MB or so.

32-MB requests are the best for raw throughput.

~15ms to land at your target location, then pure 50-60MB/sec for the .5
seconds it takes to finish the operation. (media limited at that point)

Sure, there's more latency, but I guess that is application dependant.

What about a queue depth of 2, and writing that 32MB in 1MB requests?
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