10 millisecond delay/callback

John Joyce wrote:

Joel VanderWerf wrote the following on 27.04.2007 00:04 :

...

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.

I tried your script on Windows under irb and using ruby and get similar results. I end up with times like 171.0, 171.0, 187.0, 203.0, 203.0,..., obviously select is not waiting, at least under Windows.

···

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

khaines@enigo.com wrote: