Date: Tue, 30 Mar 2004 11:36:18 +0200
From: Andi Kleen <ak@suse.de>
To: Ingo Molnar <mingo@elte.hu>
Cc: nickpiggin@yahoo.com.au, jun.nakajima@intel.com, ricklind@us.ibm.com,
       linux-kernel@vger.kernel.org, akpm@osdl.org, kernel@kolivas.org,
       rusty@rustcorp.com.au, anton@samba.org, lse-tech@lists.sourceforge.net,
       mbligh@aracnet.com
Subject: Re: [Lse-tech] [patch] sched-domain cleanups,
 sched-2.6.5-rc2-mm2-A3
Message-Id: <20040330113618.42869473.ak@suse.de>
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On Tue, 30 Mar 2004 10:18:40 +0200
Ingo Molnar <mingo@elte.hu> wrote:

> 
> * Andi Kleen <ak@suse.de> wrote:
> 
> > > ok, could you try min_interval,max_interval and busy_factor all with a
> > > value as 4, in sched.h's SD_NODE_INIT template? (again, only for testing
> > > purposes.)
> > 
> > I kept the old patch and made these changes. The results are much more
> > consistent now 3+x CPU. I still get varyations of ~2GB/s, but I had
> > this with older kernels too.
> 
> great.
> 
> now, could you try the following patch, against vanilla -mm5:
> 
> 	redhat.com/~mingo/scheduler-patches/sched2.patch
> 
> this includes 'context balancing' and doesnt touch the NUMA async
> balancing tunables. Do you get better performance than with stock -mm5?

I get better performance (roughly 2.1x CPU), but only about half the optimum.

-Andi

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