In an electrical engineering context, this would be called "measuring
a low-voltage signal with a low-impedence probe."
:)
xosview provides interesting data. but it also affects the data in
serious ways...
Robert Hyatt Computer and Information Sciences
[EMAIL PROTECTED] University of Alabama at Birmingham
(205) 934-2213 115A Campbell Hall, UAB Station
(205) 934-5473 FAX Birmingham, AL 35294-1170
On 11 Oct 1999, H. Peter Anvin wrote:
> Followup to: <[EMAIL PROTECTED]>
> By author: Keizo Fujii <[EMAIL PROTECTED]>
> In newsgroup: linux.dev.smp
> >
> > Sorry, I had to write more information.
> >
> > > > On linux-2.2.12, it seems as "vibration".
> > > >
> > > > CPU0 ___---___---___---___---___ High/Low
> > > >
> > > > CPU1 ---___---___---___---___--- Low/High
> > >
> > > note that the period is several seconds - thus there is not really any
> > > problem. (if not then it's a bug). What tool have you used to measure CPU
> > > activity?
> >
> > I just watched by "xosview" ...
> > The unit of scale is a few seconds.
> >
>
> This has been hashed and rehashed so many times, it ought to be
> super-FAQ by now: xosview preturbs the analysis to the point of
> uselessness, because xosview *itself* will cause a scheduling
> preturbation.
>
> -hpa
>
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