CPU Utilization on IBM x3755
chris at shagged.org
Sat Aug 16 17:33:41 UTC 2008
On Sat, Aug 16, 2008 at 01:18:18AM -0700, Won De Erick wrote:
> >Regarding why you're adding up all the individual process statistics: I
> >can imagine they would vary a slight bit, but I cannot explain a 7%
> >variance. Someone with more knowledge will have to assist there.
> Though the header could be conclusive, I should want the specific processes (or threads).
> And come up with a list of breakdowns, like:
> Then match this by adding up all individual processes statistics. And if I couldn't match, at least I could tell some factors that cause variance.
At the bottom of man top, reformatted for email width:
As with ps(1), things can change while top is collecting
information for an update. The picture it gives is only
a close approximation to reality.
Could this explain the variations you are seeing? top never gives you
an accurate snapshot of what the system is doing at any one instant in
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