Messages in this thread | | | Date | Wed, 17 Apr 2002 12:12:12 +0200 | From | Martin Dalecki <> | Subject | Re: Why HZ on i386 is 100 ? |
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Linus Torvalds wrote: > > On Wed, 17 Apr 2002, Mark Mielke wrote: > >>On Tue, Apr 16, 2002 at 08:57:09PM -0400, Robert Love wrote: >> >>>Because that is what Alpha does? It seems to me there is no reason for >>>a power-of-two timer value, and using 1024 vs 1000 just makes the math >>>and rounding more difficult. >> >>Only from the perspective of time displayed to a user... :-) > > > No, it also makes it much easier to convert to/from the standard UNIX time > formats (ie "struct timeval" and "struct timespec") without any surprises, > because a jiffy is exactly representable in both if you have a HZ value > of 100 or 100, but not if your HZ is 1024.
And infally 100HZ is (by accident) quite right on the perceptive threshold of a human, which is about 0.15 of a second :).
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