From: Jason Sweat <jason.sweat@...>
Date: 2005-11-11T22:28:00+09:00
Subject: Re: Accurate Timing in ruby

On 11/11/05, Kero <kero@chello.single-dot.nl> wrote:
> > In my experience it does:
> >
> > irb(main):006:0> a=Time.now;while Time.now==a;end;Time.now-a
> > => 0.01
> >
> > ie. Time.now only gives you the time in centiseconds.
>
> That's bad.
>
> On linux (700 MHz Duron) I get:
>
>   irb(main):036:0> a=Time.now;while Time.now==a;end;Time.now-a
>   => 2.0e-05
>
> And on my iPAQ w/ linux (200 MHz strongarm) I get:
>
>   irb(main):001:0> a=Time.now;while Time.now==a;end;Time.now-a
>   => 0.000271
>
> (still with usec accuracy)
>
> So my PDA is more accurate than your machine (what OS is that?)

Linux on a pathetic old box:
$ irb
irb(main):001:0> a=Time.now;while Time.now==a;end;Time.now-a
=> 4.4e-05
irb(main):002:0>
$ cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 5
model name      : Pentium II (Deschutes)
stepping        : 1
cpu MHz         : 350.802
cache size      : 512 KB


Regards,
Jason
http://blog.casey-sweat.us/