linux-kernel - Re: [BUG] Strange 1-second pauses during Resume-from-RAM

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Message-ID: <20071202135755.GB20434@elte.hu>
Date:	Sun, 2 Dec 2007 14:57:55 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Jörn Engel <joern@...fs.org>
Cc:	Mark Lord <lkml@....ca>, Pavel Machek <pavel@....cz>,
	Mark Lord <liml@....ca>, Thomas Gleixner <tglx@...utronix.de>,
	len.brown@...el.com, Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-pm@...ts.linux-foundation.org,
	rjw@...k.pl
Subject: Re: [BUG] Strange 1-second pauses during Resume-from-RAM


* Jörn Engel <joern@...fs.org> wrote:

> On Sun, 2 December 2007 12:31:43 +0100, Jörn Engel wrote:
> > 
> > This time not even the offsets have changed.  Dump is identical.
> 
> After another ten or so notrace annotations throughout the spinlock 
> code, the latency tracer appears to work.  Not sure how many useful 
> information is missing through all the annotations, though.

a few annotations out of thousands of function calls in the kernel it's 
usually not significant.

	Ingo
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