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From: Andrew Morton <akpm@osdl.org>
To: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: albert@users.sourceforge.net, linux-kernel@vger.kernel.org,
	voland@dmz.com.pl, nicolas.george@ens.fr,
	kaukasoi@elektroni.ee.tut.fi, tim@physik3.uni-rostock.de,
	george@mvista.com, johnstul@us.ibm.com,
	david+powerix@blue-labs.org
Subject: Re: boot time, process start time, and NOW time
Date: Mon, 16 Aug 2004 12:41:36 -0700	[thread overview]
Message-ID: <20040816124136.27646d14.akpm@osdl.org> (raw)
In-Reply-To: <87smcf5zx7.fsf@devron.myhome.or.jp>

OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> wrote:
>
> Albert Cahalan <albert@users.sf.net> writes:
> 
> > Even with the 2.6.7 kernel, I'm still getting reports of process
> > start times wandering. Here is an example:
> > 
> >    "About 12 hours since reboot to 2.6.7 there was already a
> >    difference of about 7 seconds between the real start time
> >    and the start time reported by ps. Now, 24 hours since reboot
> >    the difference is 10 seconds."
> > 
> > The calculation used is:
> > 
> >    now - uptime + time_from_boot_to_process_start
> 
> Start-time and uptime is using different source. Looks like the
> jiffies was added bogus lost counts.
> 
> quick hack. Does this change the behavior?

Where did this all end up?  Complaints about wandering start times are
persistent, and it'd be nice to get some fix in place...

Thanks.

  reply	other threads:[~2004-08-16 19:43 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-06-22 23:57 boot time, process start time, and NOW time Albert Cahalan
2004-06-28 17:56 ` OGAWA Hirofumi
2004-08-16 19:41   ` Andrew Morton [this message]
2004-08-16 21:49     ` john stultz
2004-08-16 23:08     ` Tim Schmielau
2004-08-16 23:56       ` Tim Schmielau
2004-08-17  0:21       ` john stultz
2004-08-17  0:37         ` George Anzinger
2004-08-17  0:49           ` john stultz
2004-08-17  0:31       ` George Anzinger
2004-08-16 22:32         ` Albert Cahalan
2004-08-17  1:26           ` George Anzinger
2004-08-16 23:08             ` Albert Cahalan
2004-08-17  1:54               ` James Courtier-Dutton
2004-08-17  2:03                 ` Lee Revell
2004-08-17 20:52                 ` George Anzinger
2004-08-17  6:56         ` Tim Schmielau
2004-08-17 20:07           ` john stultz
2004-08-17 20:13             ` [RFC] New timeofday implementation proposal john stultz
2004-08-17 20:58               ` [RFC] New timeofday code john stultz
2004-09-01 23:16               ` [RFC] New timeofday implementation proposal Christoph Lameter
2004-08-16 23:24     ` boot time, process start time, and NOW time Albert Cahalan
2004-08-17 19:00       ` john stultz
2004-08-17 17:41         ` Albert Cahalan
2004-08-17 20:58           ` john stultz
2004-08-17 20:25     ` [PATCH] " Tim Schmielau
2004-08-17 22:24       ` George Anzinger
2004-08-17 22:37         ` john stultz
2004-08-17 23:07           ` Tim Schmielau
2004-08-18  0:11             ` john stultz
2004-08-17 22:19               ` Albert Cahalan
2004-08-18  1:09                 ` john stultz
2004-08-17 22:45                   ` Albert Cahalan
2004-08-18  7:42                   ` Tim Schmielau
2004-08-19 19:15                     ` Petri Kaukasoina
2004-08-26 11:04                       ` Andrew Morton
2004-08-26 12:07                         ` Tim Schmielau
2004-08-30 23:00                           ` Tim Schmielau
2004-08-30 23:38                             ` john stultz
2004-08-31  0:37                               ` Albert Cahalan
2004-08-31  0:49                                 ` Tim Schmielau
2004-08-31  0:45                               ` Tim Schmielau
2004-08-31  1:23                                 ` john stultz
2004-08-31  1:34                             ` john stultz
2004-08-31  6:07                               ` Tim Schmielau
2004-08-31 19:27                                 ` George Anzinger
2004-08-31 20:56                                   ` john stultz
2004-08-31 21:10                                     ` David Ford
2004-09-02 20:39                                     ` George Anzinger
2004-09-01 19:14                                 ` OGAWA Hirofumi
2004-09-02 20:58                                   ` George Anzinger
2004-09-02 21:38                                     ` OGAWA Hirofumi
2004-09-03  0:59                                       ` George Anzinger
2004-09-03  3:35                                         ` OGAWA Hirofumi
2004-09-03  7:31                                           ` George Anzinger
2004-09-03  7:51                                             ` Tim Schmielau
2004-09-03  7:15                                       ` Tim Schmielau

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