Re: [PATCH] speed up SATA

From: Timothy Miller
Date: Tue Mar 30 2004 - 12:53:13 EST




Jens Axboe wrote:

- The optimal_sectors calculation is just an average of previous maximum
with current maximum. The scheme has a number of break down points,
for instance writes starving reads will give you a bad read execution
time, further limiting ->optimal_sectors[READ]


I did look through your code a bit, but one thing to be concerned with is that going only on max throughput might be fooled by cache hits on the drive.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/