Messages in this thread | | | Date | Sun, 4 Jan 2004 01:02:01 +0100 | From | Pawel Dziekonski <> | Subject | Re: IDE performance drop between 2.4.23 and 2.6.0 - pinpointed! |
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On sob, 03 sty 2004 at 11:46:36 +0100, szonyi calin wrote: > --- Pawel Dziekonski <pawel.dziekonski@pwr.wroc.pl> a écrit : > > hi, > > > > same problem here however it seems that i have pinpointed it > > )at least > > for me): > >
> from the manpage of hdparm: -t Perform timings of device reads for > benchmark and compari- son purposes. For meaningful results, > this operation should be repeated 2-3 times on an otherwise inactive > sys- tem (no other active processes) with at least a couple of > megabytes of free memory.
> if the above conditions are not met your test is irrelevant
those conditions were met. trust me - i have just copied and pasted some of the results :^)
ps. btw, for last 5 years 2.6.0 this is a 1st example of a situation where hdparm gives me so unstable results. i think this is because of the nature of as-scheduler. maybe i'm wrong.
-- Pawel Dziekonski <pawel.dziekonski|@|pwr.wroc.pl>, KDM WCSS avatar:0:0: Wroclaw Networking & Supercomputing Center, HPC Department -> See message headers for privacy policy info. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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