linux-kernel - Re: max heap usage of a Linux process

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Message-Id: <200611141439.38048.a1426z@gawab.com>
Date:	Tue, 14 Nov 2006 14:39:38 +0300
From:	Al Boldi <a1426z@...ab.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-c-programming@...r.kernel.org
Subject: Re: max heap usage of a Linux process

Glynn Clements wrote:
> Prasanta Sadhukhan wrote:
> > Actually, I have the process-pid(s) and I want to find out
> > programmatically, what's the max heap size that had been consumed by
> > that process at any given moment(based on user command) from another
> > process.
>
> Then you need to read the files in /proc/<pid>/*. There isn't a system
> call to get resource usage for another process.

Wow, really?  Reading /proc/<pid>/* is pretty expensive, especially if you 
have to do it for 1000's of procs.

That's probably why top is such a cpu-hog.


Thanks!

--
Al


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