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Re: Measurement of CPU usage
de Jast 05/07/2006 01:08
PaulFXH wrote:
> Hi
> Not looking for FreeWare--just trying to hear some opinions on
> something that been bothering me for some time.
> I use WinMe as OS and have downloaded various small utilities (all
> FREE) to view CPU Usage on my computer.
> These included Process Explorer, ActiveCPU, FreeMeter and WinTop.
> Trouble is, they don't all show the same result. Indeed, the CPU Usage
> results seem to fall into one of two distinct categories; very high or
> very low.
> As an example, while writing this I have all four of the above
> utilities running showing the CPU usage (note that I have only one
> single-core processor on this box). So, while Process Explorer and
> WinTop show about 3.5% usage, FreeMeter and ActiveCPU, on the other
> hand, both show about 64%.
> I have seen exactly the same thing on at least one other computer
> (running on WinXP).
> I have posted to a number of groups trying to get somebody to explain
> why there is this large difference and what significance should be
> attached to it. I have even e-mailed the author of one of the
> utilities.
> However, up to now, nobody seems able, or willing, to provide an
> explanation.
> Is there anybody out there who can point me in the right direction on
> this one?
> TIA
> Paul
>
I guess it depends on how you are testing them? You should have a
standard load set up, say a big avi file or something that maxes out
your cpu at around 50 to 90% then monitor this using only one of your
CPU monitors. Then do the same thing with each one going. Running all of
them at once will produce different results because they are sampling at
different times and thus different results. Also, try increasing the
sample period or update speed to something bigger, say at least 2 to 5
seconds as this may average over a longer time and thus give better,
smoother more accurate results.