[Haskell-cafe] Re: Joels Time Leak

Simon Marlow simonmar at microsoft.com
Wed Jan 4 11:45:06 EST 2006

Bulat Ziganshin wrote:

> Tuesday, January 03, 2006, 7:43:21 PM, you wrote:
>>>The minimum time between context switches is 20 milliseconds.
>>>Is there any good reason why 0.02 seconds is the best that you can get
>>>here? Couldn't GHC's internal timer tick at a _much_ faster rate (like
>>>50-100µs or so)?
> SM> Sure, there's no reason why we couldn't do this.  Of course, even
> SM> idle Haskell processes will be ticking away in the background, so
> SM> there's a reason not to make the interval too short.  What do  
> SM> you think is reasonable?
> Simon, the talk is about changing GHC _tick_, which is a _minimal_
> possible context switch interval. so, we want to decrease this tick
> and retain current 20 ms _default_ switch interval. this will make
> possible to decrease switch interval for programs that really need it,
> which is currently entirely impossible.

Yes, I know.


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