From: lahr <lahr@us.ibm.com>
To: Peter Wong <wpeter@us.ibm.com>
Cc: linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net,
Hans Tannenberger <Hans-Joachim.Tannenberger@us.ibm.com>,
Ruth Forester <rsf@us.ibm.com>,
"Carbonari, Steven" <steven.carbonari@intel.com>
Subject: Re: Lockmeter Analysis of 2 DDs
Date: Fri, 7 Sep 2001 10:04:56 -0700 [thread overview]
Message-ID: <20010907100456.A11427@us.ibm.com> (raw)
In-Reply-To: <OFBC292301.DC08DA17-ON85256AC0.00555C52@raleigh.ibm.com>
In-Reply-To: <OFBC292301.DC08DA17-ON85256AC0.00555C52@raleigh.ibm.com>; from wpeter@us.ibm.com on Fri, Sep 07, 2001 at 10:47:37AM -0500
> Indeed, io_request_lock is very hot once the bounce buffers were
> eliminated. Is anyone working on a patch for the io_request_lock that
> possibly take the global lock and splits it into a per device queue lock?
> We understand that getting this patch into 2.4 is unlikely, but it would
> be nice to have this patch available on 2.4 for experimental purposes.
I recently published a patch for 2.4 that addresses this exact issue at
http://lse.sourceforge.net/io/
Jonathan
--
Jonathan Lahr
IBM Linux Technology Center
Beaverton, Oregon
lahr@us.ibm.com
503-578-3385
prev parent reply other threads:[~2001-09-07 17:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-07 15:47 Lockmeter Analysis of 2 DDs Peter Wong
2001-09-07 15:53 ` [Lse-tech] " Christoph Hellwig
2001-09-07 17:04 ` lahr [this message]
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