From: alex dyas (adyas@twowaytv.co.uk)
Date: Wed Jun 19 2002 - 04:42:36 EDT
Update. Thanks to those who followed up.
alex dyas wrote:
> Original question:
>
> > I'd like to be able to determine the CPU's busy/idle states through
> > Perl, much like the readout of top. A few attempts have so far proven
> > fruitless:
> >
> > - vmstat - this is fine on machines that haven't been up for long, but
> > there is a problem after a few months that causes negative numbers to
> > appear for some of the values. i can't rely on this. (
> > http://www.sunmanagers.org/archives/2000/1277.html )
> >
> > - Solaris:: packages. The script needs to be portable so I don't want
> > to have to install packages everywhere.
>
> Thanks to all those who replied. Suggestions were:
>
> - Kstat Perl module
> (http://search.cpan.org/search?module=Solaris::Kstat). Although I think
> this would be the best solution in most ways, I was put off by the
> trouble I had building it. I need something portable and easy to
> install. (Kevin Buterbaugh suggested that building it with the same
> compiler I built Perl with would probably help).
Kstat is installed by default with Solaris 8 and 9. See /usr/bin/kstat
and man kstat.
> - sar. this would be good but doesn't seem to be installed on all the
> machines we have (?).
sar is installed with the following packages:
system SUNWaccr System Accounting, (Root)
system SUNWaccu System Accounting, (Usr)
> - mpstat. this gives CPU states for all CPUs in the machine which is
> nice. an average could easily be calculated.
the first reading summarizes all activity since boot; each
subsequent table summarizes activity for the preceding interval.
Alex..
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