linux-kernel - Re: soft lockup - CPU#1 stuck for 15s! [swapper:0]

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Message-ID: <Pine.LNX.4.64.0712151340060.3807@mini.warudkars.net>
Date:	Sat, 15 Dec 2007 13:48:47 -0500 (EST)
From:	Parag Warudkar <parag.warudkar@...il.com>
To:	Thomas Gleixner <tglx@...utronix.de>
cc:	Parag Warudkar <parag.warudkar@...il.com>,
	Len Brown <lenb@...nel.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: soft lockup - CPU#1 stuck for 15s! [swapper:0]

On Sat, 15 Dec 2007, Thomas Gleixner wrote:

>I have a patch staged for Linus, which fixes a thinko in the broadcast
>code. It might be related to your problem. Can you give it a try ?

Yep - this looks promising. No soft lockups for last half an hour 
with 4-5 Wakeups from idle. It is almost smooth - jerkiness gone down by 
99%. There are still very infrequent and quick spells where the key typed 
on the keyboard takes effect a little later - but nothing like earlier.

I will run it for a little longer just to be sure - but I don't think it 
will be a problem.

Thanks Thomas.

Parag
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