From mboxrd@z Thu Jan  1 00:00:00 1970
From: Davidlohr Bueso <dave.bueso@gmail.com>
Subject: Re: [RFC] [PATCH procfs] Add process age
Date: Fri, 23 Jul 2010 14:47:10 -0400
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References: <1279907271.4335.3.camel@cowboy>  <20100723183549.GA10518@x200>
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Cc: torvalds@linux-foundation.org, linux-kernel@vger.kernel.org,
	linux-fsdevel@vger.kernel.org
To: Alexey Dobriyan <adobriyan@gmail.com>
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On Fri, 2010-07-23 at 21:35 +0300, Alexey Dobriyan wrote:
> On Fri, Jul 23, 2010 at 01:47:51PM -0400, Davidlohr Bueso wrote:
> > This patch exports a process's age, in seconds, adding a /proc/#/age file.
> 
> What for?

I have not found any straight way to get the run time of a processes,
without having to interpret the start_time entry in /proc/#/stat and
manually subtract the uptime from it.

This small file simply aids the users to obtain the information easier
and quicker. Another alternative would be to add an entry
in /proc/#/status.

Davidlohr