Messages in this thread | | | Date | Mon, 25 Sep 2000 19:23:21 +0200 | From | Andrea Arcangeli <> | Subject | Re: [patch] vmfixes-2.4.0-test9-B2 |
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On Mon, Sep 25, 2000 at 07:05:02PM +0200, Ingo Molnar wrote: > yep - and Jens i'm sorry about the outburst. Until a bug is found it's > unrealistic to blame anything.
I think the only bug maybe to blame in the elevator is the EXCLUSIVE wakeup thing (and I've not benchmarked it alone to see if it makes any real world performance difference but for sure its behaviour wasn't intentional). Anything else related to the elevator internals should perform better than the old elevator (aka the 2.2.15 one). The new elevator ordering algorithm returns me much better numbers than the CSCAN one with tiobench. Also consider the latency control at the moment is completly disabled as default so there are no barriers unless you change that with elvtune.
Also I'm using -r 250 and -w 500 and it doesn't change really anything in the numbers compared to too big values (but it fixes the starvation problem).
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