From: John Joyce <dangerwillrobinsondanger@...>
Date: 2007-04-27T14:01:48+09:00
Subject: Re: 10 millisecond delay/callback


On Apr 27, 2007, at 9:58 AM, Lionel Bouton wrote:

> Joel VanderWerf wrote the following on 27.04.2007 00:04 :
>> khaines@enigo.com wrote:
>> ...
>>> Try select()
>>> ----
>>> irb(main):005:0> 0.upto(25) do
>>> irb(main):006:1* select(nil,nil,nil,0.01)
>>> irb(main):007:1> puts Time.now.usec/1000
>>> irb(main):008:1> end
>>> 138
>>> 148
>>> 158
>>> 168
>>> 178
>>> 188
>>> 198
>> ...
>>
>> What kind of system are you on? It doesn't work so well for me.
>
> I'm wondering too, I see a nearly constant 2ms delay added to the 10ms
> sleep with select on both an Athlon64 X2 3800+ and an Athlon XP 2400+.
>
> Is there some YARV in there?
>
> Lionel
>
Have you all tried this outside of irb?
Just run the actual script itself + profiler to find out where the  
slowdown is occurring.
Try it with sleep and select versions. This might show some different  
points.. maybe not.