Variable timer tick rate?

[Poul-Henning Kamp]

In message <20031018130119.T47207 at root.org>, Nate Lawson writes:

>This is an interesting approach.  If there are no upcoming timeouts,
>decrease the tick rate.  Of course, you have to amortize the cost of
>resetting the timer over the period of no ticks.
>
>http://kerneltrap.org/node/view/1006

Yes, unfortunately we may have a couple of timeout() (ab)users which
use it to implement "as fast as possible polling" by calling timeout
with a 1 tick argument, so last I looked (a couple of years ago)
it fired every tick.

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