linux-kernel - Re: [PATCH 1/1] add StartTimeMonotomic, StartTimeBootTime to per pid in /proc

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Message-ID: <52E12C93.1050000@mindstab.net>
Date:	Thu, 23 Jan 2014 06:52:03 -0800
From:	Dan Ballard <dan@...dstab.net>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	Lennart Poettering <lennart@...ttering.net>, kay.sievers@...y.org,
	Rob Landley <rob@...dley.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Minto Joseph <mvaliyav@...hat.com>,
	Cyrill Gorcunov <gorcunov@...nvz.org>,
	Pavel Emelyanov <xemul@...allels.com>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Rik van Riel <riel@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Mel Gorman <mgorman@...e.de>, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] add StartTimeMonotomic, StartTimeBootTime to per
 pid in   /proc

On request of Lennart Poettering for the Linux plumbers.

On 14-01-22 07:53 AM, Peter Zijlstra wrote:
> On Tue, Jan 21, 2014 at 07:10:04AM -0800, Dan Ballard wrote:
>> starttime in /proc/$PID/stat is inaccurate by "clock tick" granularity.
>> The kernel keeps better track os this exposes that in /prod/$PID/status
>> as StartTimeMonotonic and StartTimeBootTime
>>
> Why?

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