Re: Report: Big Improvement in -test3

From: Linus Torvalds (torvalds@transmeta.com)
Date: Thu Jul 13 2000 - 01:06:49 EST


On Thu, 13 Jul 2000, Richard Gooch wrote:
>
> Er, so how many ticks do a nice 10 and a nice 11 process get,
> respectively?

Same number of ticks. The nice 10 one gets scheduled more eagerly, though
(ie the "nice" level does more than just determine the number of ticks: it
is also used to determine relative priorities if two processes have the
same number of ticks to run).

In 2.5.x we'll probably make the timer run at a higher rate, making this
issue go away, but for 2.4.x this was the expedient way to maintain UNIX
semantics and get good interactive behaviour.

                Linus

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