Re: Linux disk performance.

[Manish Regmi]

On 12/19/06, Nick Piggin <nickpiggin@xxxxxxxxxxxx> wrote:
> When you submit a request to an empty block device queue, it can
> get "plugged" for a number of timer ticks before any IO is actually
> started. This is done for efficiency reasons and is independent of
> the IO scheduler used.

Thanks for the information..

> Use the noop IO scheduler, as well as the attached patch, and let's
> see what your numbers look like.

Unfortunately i got the same results even after applying your patch. I
also tried putting
q->unplug_delay = 1;
But it did not work. The result was similar.

--
---------------------------------------------------------------
regards
Manish Regmi

---------------------------------------------------------------
UNIX without a C Compiler is like eating Spaghetti with your mouth
sewn shut. It just doesn't make sense.
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