[Nottingham] Process CPU and memory usage?

[Martin]

Camilo Mesias wrote:
>> From within a program, at intervals how can I find out how much CPU and
>> how much memory has been used so far for all child/forked processes?
> 
> Take a look at getrusage(), maybe consider writing a wrapper program
> that does the stats for you (then you can reuse it directly instead of
> pasting the same code into the next project)

... But that don't work.

Two aspects, one is:

http://linux.die.net/man/2/getrusage
"for resources used by those of its children that have terminated and
have been waited for"

And two, it doesn't work... For example:
http://zwillow.blogspot.com/2006/05/broken-getrusage-in-linux.html

So is this where you must do a costly trog through all of /proc/pid...?


What do others do for this?

Cheers,
Martin

-- 
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Martin Lomas
martin at ml1.co.uk
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