Messages in this thread |  | | Subject | Re: [patch] vmfixes-2.4.0-test9-B2 | From | Peter Osterlund <> | Date | 25 Sep 2000 22:52:08 +0200 |
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Andrea Arcangeli <andrea@suse.de> writes:
> The new elevator ordering algorithm returns me much better numbers > than the CSCAN one with tiobench.
Do you know why? Is it because the average seek distance becomes smaller with your algorithm? (I later realized that request merging is done before the elevator function kicks in, so your algorithm should not produce more seeks than a CSCAN algorithm. Unfortunately I didn't realize this when I wrote my CSCAN patch.)
Btw, does anyone know how the seek time depends on the seek distance on modern disk hardware?
-- Peter Österlund Email: peter.osterlund@mailbox.swipnet.se Sköndalsvägen 35 f90-pos@nada.kth.se S-128 66 Sköndal Home page: http://home1.swipnet.se/~w-15919 Sweden Phone: +46 8 942647
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