linux-kernel - Re: lockmeter

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Message-ID: <45BD4A1A.1040805@mbligh.org>
Date:	Sun, 28 Jan 2007 17:12:58 -0800
From:	"Martin J. Bligh" <mbligh@...igh.org>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Christoph Hellwig <hch@...radead.org>, Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	John Hawkes <hawkes@....com>
Subject: Re: lockmeter

Arjan van de Ven wrote:
> On Sun, 2007-01-28 at 17:04 +0000, Christoph Hellwig wrote:
>> On Sun, Jan 28, 2007 at 08:52:25AM -0800, Martin J. Bligh wrote:
>>> Mmm. not wholly convinced that's true. Whilst i don't have lockmeter
>>> stats to hand, the heavy time in __d_lookup seems to indicate we may
>>> still have a problem to me. I guess we could move the spinlocks out
>>> of line again to test this fairly easily (or get lockmeter upstream).
>> We definitly should get lockmeter in.  Does anyone volunteer for doing
>> the cleanup and merged?
> 
> specifically; implementing it on top of lockdep should be very lean and
> simple...

cc: John Hawkes, if we're going to discuss this ;-)

M.

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