On Tue, Jul 14, 2009 at 04:46:37PM -0500, Eric Sandeen wrote:
>
> (whoa, can barriers make something faster? who woulda thunk it)
I sent this reply in response to the first Adrian's first e-mail, that
had bogus e-mail addresses for akpm and sct, so resending it here:
Have you actually benchmarked these patches, ideally with a fixed
filesystem image so the two runs are done requiring exactly the same
number of blocks to recover? We implement ordered I/O in terms of
doing a flush, so it would be surprising to see that a significant
difference in times. Also, it would be useful to do a blktrace before
and after your patches, again with a fixed filesystem image so the
experiment can be carefully controlled.
Regards,
- Ted
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