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On Tue, 22 Sep 1998, Larry McVoy wrote: > How many times before it sinks in: 77% variance is not cache induced. If > that were true, then nothing would be deterministic. You wouldn't be able > to say "time make" and expect to get anything like the same number two times > in a row, yet people do that all the time. This is not really true, especially for something like make. If you combine n events of average length t and std dev u, you get an event of average length n*t, but a smaller std dev - if you multiply a bunch of bell curves together, you get a tighter curve. The possible range becomes larger, sure. Not that you would really expect most of events you'd benchmark on a computer to have a very bell-shaped distribution. -- "Love the dolphins," she advised him. "Write by W.A.S.T.E.." - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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