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Message-ID: <45BCDF88.2020504@mbligh.org>
Date: Sun, 28 Jan 2007 09:38:16 -0800
From: "Martin J. Bligh" <mbligh@...igh.org>
To: Christoph Hellwig <hch@...radead.org>,
"Martin J. Bligh" <mbligh@...igh.org>, Ingo Molnar <mingo@...e.hu>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
Dipankar Sarma <dipankar@...l9.org>
Subject: Re: lockmeter
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?
On second thoughts .. I don't think it'd actually work for this since
the locks aren't global. Not that it shouldn't be done anyway, but ...
ISTR we still thought dcache scalability was a significant problem last
time anyone looked at it seriously - just never got fixed. Dipankar?
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