Re: [patch] sched: avoid div in rebalance_tick

[Alan]

On Fri, 12 Jan 2007 07:02:13 +0100
Nick Piggin <npiggin@xxxxxxx> wrote:

> Just noticed this while looking at a bug.
> Avoid an expensive integer divide 3 times per CPU per tick.

Integer divide is cheap on some modern processors, and multibit shift
isn't on all embedded ones.

How about putting back scale = 1 and using

scale += scale;

instead of the shift and getting what ought to be even better results

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