Subject: Re: Amazing strongarms!
To: Dave Daniels <Davedan@arcade.demon.co.uk>
From: Richard Earnshaw <rearnsha@arm.com>
List: port-arm32
Date: 12/22/1998 19:04:44
> RE> Can anyone tell me why 'top' thinks I can use 143% of my
> RE> strongarm? Is this something new about the strongarm that
> RE> we haven't been told?
>
> At a guess, I would say that it is because 'top' is not atomic and
> therefore the figures it puts out can be distorted if it is
> pre-empted and not dispatched again immediately. I think that
> there are some comments about this on the 'man' page for it.
>
What, every time? I think that unlikely. It's interesting to note that
the percentages seem to top out at around 166 for a process that is
consuming the entire cpu. Could it be a coincidence that this is ~ 100 /
60 the two most common values for HZ?
Richard.