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From: Jay Lan <jlan@engr.sgi.com>
To: dean gaudet <dean-list-linux-kernel@arctic.org>
Cc: Paul Jackson <pj@engr.sgi.com>,
	johnpol@2ka.mipt.ru, guillaume.thouvenin@bull.net, akpm@osdl.org,
	greg@kroah.com, linux-kernel@vger.kernel.org,
	efocht@hpce.nec.com, linuxram@us.ibm.com, gh@us.ibm.com,
	elsa-devel@lists.sourceforge.net
Subject: Re: [patch 1/2] fork_connector: add a fork connector
Date: Wed, 30 Mar 2005 10:11:47 -0800	[thread overview]
Message-ID: <424AEBE3.1010100@engr.sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.62.0503292200550.30657@twinlark.arctic.org>

The parent information ((ppid,pid) pair) is useful for process group
aggregation while do_exit() hook is needed to save per task
accounting data before the task data is disposed.

Thanks,
  - jay


dean gaudet wrote:
> On Tue, 29 Mar 2005, Jay Lan wrote:
> 
> 
>>The fork_connector is not designed to solve accounting data collection
>>problem.
>>
>>The accounting data collection must be done via a hook from do_exit().
> 
> 
> by the time do_exit() occurs the parent may have disappeared... you do 
> need to record something at fork() time so that you can account to the 
> correct ancestor.
> 
> an example of where this ancestry is useful would be the summation of all 
> cpu time spent by children of apache, spamd, clamd, ...
> 
> -dean


  parent reply	other threads:[~2005-03-30 18:15 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-03-25 10:03 [patch 1/2] fork_connector: add a fork connector Guillaume Thouvenin
2005-03-25 22:45 ` dean gaudet
2005-03-28 21:42 ` Paul Jackson
2005-03-29  7:04   ` Evgeniy Polyakov
2005-03-29  7:02     ` Greg KH
2005-03-29  7:10       ` Evgeniy Polyakov
2005-03-29  8:49     ` Paul Jackson
2005-03-29  9:17       ` Guillaume Thouvenin
2005-03-29 15:23         ` Paul Jackson
2005-03-29 18:44           ` Jay Lan
2005-03-30  1:05             ` Paul Jackson
2005-03-30  5:39           ` Guillaume Thouvenin
2005-03-30  6:35             ` Paul Jackson
2005-03-30 10:25               ` Herbert Xu
2005-03-30 10:57                 ` Evgeniy Polyakov
2005-03-30 11:01                 ` Guillaume Thouvenin
2005-04-01  3:26           ` Drew Hess
2005-03-29 10:29       ` Evgeniy Polyakov
2005-03-29 17:03         ` Paul Jackson
2005-03-29 21:09           ` Jay Lan
2005-03-29 22:01             ` Paul Jackson
2005-03-30 14:14               ` Evgeniy Polyakov
2005-03-30 20:56                 ` Paul Jackson
2005-03-30  6:06             ` dean gaudet
2005-03-30  6:25               ` Paul Jackson
2005-03-30  6:38               ` Guillaume Thouvenin
2005-03-30 18:11               ` Jay Lan [this message]
2005-03-29  8:05   ` Guillaume Thouvenin
2005-03-29 14:47     ` Paul Jackson
2005-03-29 12:51   ` Guillaume Thouvenin
2005-03-29 15:35     ` Paul Jackson
2005-03-30  5:52       ` Guillaume Thouvenin
2005-03-30  6:41         ` Paul Jackson
  -- strict thread matches above, loose matches on Subject: below --
2005-03-17  9:04 Guillaume Thouvenin
2005-03-17 16:56 ` Jesse Barnes
2005-03-17 21:38   ` Evgeniy Polyakov
2005-03-17 22:05     ` Jesse Barnes
2005-03-21  8:23       ` Guillaume Thouvenin
2005-03-21 12:48       ` Guillaume Thouvenin
2005-03-21 20:52         ` Ram
2005-03-22  4:36           ` Evgeniy Polyakov
2005-03-22 18:40             ` Ram
2005-03-22  7:07           ` Guillaume Thouvenin
2005-03-22 18:15             ` Jay Lan
2005-03-23  8:15               ` Guillaume Thouvenin
2005-03-22 18:26             ` Ram
2005-03-22 19:22               ` Evgeniy Polyakov
2005-03-22 19:18                 ` Ram
2005-03-22 20:25                   ` Evgeniy Polyakov
2005-03-22 20:42                     ` Ram
2005-03-23  4:52                       ` Evgeniy Polyakov
2005-03-22 22:51                   ` Jay Lan
2005-03-22 23:51                 ` Jay Lan
2005-03-23  5:01                   ` Evgeniy Polyakov
     [not found]                     ` <1111557106.23532.65.camel@uganda>
2005-03-23 19:00                       ` Ram

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