linux-kernel - Re: [PATCH 00/27] Latest numa/core release, v16

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Date:	Tue, 20 Nov 2012 09:01:10 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Turner <pjt@...gle.com>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Christoph Lameter <cl@...ux.com>,
	Rik van Riel <riel@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Johannes Weiner <hannes@...xchg.org>,
	Hugh Dickins <hughd@...gle.com>
Subject: Re: [PATCH 00/27] Latest numa/core release, v16


* David Rientjes <rientjes@...gle.com> wrote:

> I confirm that numa/core regresses significantly more without 
> thp than the 6.3% regression I reported with thp in terms of 
> throughput on the same system.  numa/core at 01aa90068b12 
> ("sched: Use the best-buddy 'ideal cpu' in balancing 
> decisions") had 99389.49 SPECjbb2005 bops whereas ec05a2311c35 
> ("Merge branch 'sched/urgent' into sched/core") had 122246.90 
> SPECjbb2005 bops, a 23.0% regression.

What is the base performance figure with THP disabled? Your 
baseline was:

   sched/core at ec05a2311c35:    136918.34 SPECjbb2005 

Would be interesting to see how that kernel reacts to THP off.

Thanks,

	Ingo
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