linux-kernel - Re: ALLANC: Proposal to add progress records to process accounting

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Message-ID: <20090113091703.566663ce@lxorguk.ukuu.org.uk>
Date:	Tue, 13 Jan 2009 09:17:03 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Allan Chandler <allachan@....ibm.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: ALLANC: Proposal to add progress records to process accounting

> will be written for any process that hasn't written a record in a while
> (for our purposes, 24 hours is fine but it may be better to make this
> configurable).

Agreed and this sounds sensible.

> too much overhead to the context switch (that's putting it mildly).  I
> assume this would be somewhere in kernel/sched.c/context_switch() or
> kernel/sched.c/prepare_task_switch() although I haven't yet looked in great
> detail.

Are you planning to update the log based upon wall time or cpu used ?

Alan
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