Re: Measurement of CPU usage

de PaulFXH 05/11/2006 09:25

Josef W. Segur escreveu:

> "PaulFXH" <paul_hackett2@yahoo.com.br> wrote:
>
> >
> >Jast escreveu:
> >
> >> Ok here are the numbers, idle
> >> 1 2
> >> 1 2
> >> 4 2
> >> 3 2
> >> 2 3
> >> 4 2
> >> Then I started playing a .mov file
> >> 36 29
> >> 26 26
> >> 26 27
> >> 28 26
> >> Then I also started playing an avi
> >> 70 75
> >> 77 77
> >> 76 74
> >> 63 58
> >
> >Hi Jast
> >Thanks a lot for carrying out the tests.
> >Well, it sure looks like a pretty conclusive proof that FreeMeter and
> >Process Explorer do indeed give the same CPU usage numbers.
> >
> >So, why are these numbers so astoundingly different on my computer? Is
> >it because I have WinMe rather than WinXP? But certainly FreeMeter
> >claims to be compatible with WinMe.
>
> I have read that Win NT/2k/XP have a HLT instruction in their idle process
> so the CPU is actually stopped when not needed. On Win9X/ME systems the
> idle process is an active loop. That major difference is probably what is
> causing the discrepancy.
>
> There are "CPU Cooler" programs which can be used on Win9X/ME systems to
> add the HLT. <URL: http://www.benchtest.com/cooler.html > might provide
> some ideas.
>
> --
> Joe

Hi Joe
Thanks for your comments.
That's an interesting observation about a difference in CPU activity
between Win9x/Me and NT OSs. However, I cannot as yet see how this
would lead to two different numeric assessments of CPU activity on
machines with Win9x/Me.
Since I initiated this thread, I have learnt that FreeMeter and Process
Explorer give essentially identical CPU Usage readings on machines
running WinXP (based on tests with two different computers).
Nevertheless, my own computer on WinMe continues to show a very marked
difference (FM number is normally 10-20 times that of PE) between the
indicated CPU Usage for these two utilities.
I still don't know if this is due to some peculiarity of my computer or
whether it is a characteristic of machines running on Win9x/Me.
Is there anybody out there running any of these non-NT OSs who would be
prepared to try a small, free, risk-free test on CPU Usage?

TIA
Paul