[Nottingham] Process CPU and memory usage?

[Martin]

Peter Chang wrote:
> On Mon, 22 Sep 2008, Camilo Mesias wrote:
> [...]
>> Have you considered doing something with top, maybe configuring it to
>> run in batch mode at an interval of your choice? Top reads /proc, and
>> it is fairly costly (but you may be able to mitigate by having a
>> longer interval)
> 
> Isn't ps(1) a better option than top(1)? It has an option to take a parent 
> PID too!

Or even use pstree...


So how do you get 'realtime' process stats? (Of /currently/ running
processes.)

I can't help but think that this is one of those "it must have been done
already"...


Sorry, but the top/ps/pstree and parse their output seems to be rather
expensively clunky. Then also, scanning through /proc is also
expensively clunky...


Any other ideas?

Cheers,
Martin

-- 
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Martin Lomas
martin at ml1.co.uk
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