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Date: Thu, 14 Mar 2002 18:46:09 +0530
From: Dipankar Sarma <dipankar@in.ibm.com>
To: Anton Blanchard <anton@samba.org>
Cc: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>,
        lse-tech@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: [Lse-tech] Re: 10.31 second kernel compile
Message-ID: <20020314184609.D15394@in.ibm.com>
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In-Reply-To: <20020314112725.GA2008@krispykreme>; from anton@samba.org on Thu, Mar 14, 2002 at 10:27:26PM +1100
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On Thu, Mar 14, 2002 at 10:27:26PM +1100, Anton Blanchard wrote:
>  
> > >    554 .d_lookup                               
> > 
> > Did you try the dcache patches?
> 
> Not for this, I did do some benchmarking of the RCU dcache patches a
> while ago which I should post.

Please do ;-) This shows why we need to ease the pressure on dcache_lock.

> 
> > Can you publish lockmeter stats?
> 
> I didnt get a chance to run lockmeter, I tend to use the kernel profiler
> and use a hacked readprofile (originally from tridge) that displays
> profile hits vs assembly instruction. Thats usually good enough to work
> out which spinlocks are a problem.

Is this a PPC only hack ? Also, where can I get it ?

Thanks
-- 
Dipankar Sarma  <dipankar@in.ibm.com> http://lse.sourceforge.net
Linux Technology Center, IBM Software Lab, Bangalore, India.
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