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Date: Wed, 21 Nov 2012 10:38:00 +0100
From: Ingo Molnar <mingo@kernel.org>
To: David Rientjes <rientjes@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        Mel Gorman <mgorman@suse.de>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        linux-mm <linux-mm@kvack.org>, Peter Zijlstra <a.p.zijlstra@chello.nl>,
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        Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
        Christoph Lameter <cl@linux.com>, Rik van Riel <riel@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Andrea Arcangeli <aarcange@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Johannes Weiner <hannes@cmpxchg.org>, Hugh Dickins <hughd@google.com>
Subject: Re: numa/core regressions fixed - more testers wanted
Message-ID: <20121121093800.GA26148@gmail.com>
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* David Rientjes <rientjes@google.com> wrote:

> I started profiling on a new machine that is an exact 
> duplicate of the 16-way, 4 node, 32GB machine I was profiling 
> with earlier to rule out any machine-specific problems.  I 
> pulled master and ran new comparisons with THP enabled at 
> c418de93e398 ("Merge branch 'x86/mm'"):
> 
>   CONFIG_NUMA_BALANCING disabled	136521.55 SPECjbb2005 bops
>   CONFIG_NUMA_BALANCING enabled		132476.07 SPECjbb2005 bops (-3.0%)
> 
> Aside: neither 4739578c3ab3 ("x86/mm: Don't flush the TLB on 
> #WP pmd fixups") nor 01e9c2441eee ("x86/vsyscall: Add Kconfig 
> option to use native vsyscalls and switch to it") 
> significantly improved upon the throughput on this system.

Could you please send an updated profile done with latest -tip? 
The last profile I got from you still had the vsyscall emulation 
page faults in it.

Thanks,

	Ingo