Messages in this thread | | | Subject | Re: stochastic fair queueing in the elevator [Re: [BENCHMARK] 2.4.20-ck3 / aa / rmap with contest] | From | Rod Van Meter <> | Date | 11 Feb 2003 11:13:21 -0800 |
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On Mon, 2003-02-10 at 05:30, ext Rik van Riel wrote: > On Mon, 10 Feb 2003, Andrew Morton wrote: > > > Could be that sending out a request which is larger than a track is > > saving a rev of the disk for some reason. > > I guess disks are optimised for the benchmarks that are > run by popular PC magazines ...
Yes, absolutely they are (I used to work for one such company that no longer exists). However, there's a catch -- the disk drive companies are optimizing for the test as currently constituted, but the test keeps changing. So they're optimizing for version N-1 while the magazine is publishing N. Can't help it. Ever heard of the Nyquist frequency?
> > After all, those benchmarks and the sales price are the > main factors determining sales ;) >
Yup. In general, it's capacity first, then reliability, then performance. No, wait, not quite; the FIRST criterion is the ability to ship when you say you will. If you make Dell late on shipping a bunch of machines, you WILL feel the pain.
--Rod
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