Messages in this thread | | | Date | Sun, 28 Mar 2004 16:56:52 +1000 | From | Nick Piggin <> | Subject | Re: [PATCH] speed up SATA |
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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? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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