linux-kernel - [PATCH 0/2] Simple concepts extracted from tip/numa/core.

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Date:	Wed, 01 May 2013 23:19:50 +0530
From:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
To:	Ingo Molnar <mingo@...nel.org>,
	Andrea Arcangeli <aarcange@...hat.com>
Cc:	Mel Gorman <mgorman@...e.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Rik van Riel <riel@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 0/2] Simple concepts extracted from tip/numa/core.

Hi,

Here is an attempt to pick few interesting patches from tip/numa/core.
For the initial stuff, I have selected the last_nidpid (which was
last_cpupid + Make gcc to not reread the page tables patches).

Here is the performance results of running autonumabenchmark on a 8 node 64
core system.  Each of these tests were run  for 5 iterations.


KernelVersion: v3.9
                        Testcase:      Min      Max      Avg
                          numa01:  1784.16  1864.15  1800.16
             numa01_THREAD_ALLOC:   293.75   315.35   311.03
                          numa02:    32.07    32.72    32.59
                      numa02_SMT:    39.27    39.79    39.69

KernelVersion: v3.9 + last_nidpid + gcc: no reread patches
                        Testcase:      Min      Max      Avg  %Change
                          numa01:  1774.66  1870.75  1851.53   -2.77%
             numa01_THREAD_ALLOC:   275.18   279.47   276.04   12.68%
                          numa02:    32.75    34.64    33.13   -1.63%
                      numa02_SMT:    32.00    36.65    32.93   20.53%

We do see some degradation in numa01 and numa02 cases. The degradation is
mostly because of the last_nidpid patch. However the last_nidpid helps
thread_alloc and smt cases and forms the basis for few more interesting
ideas in the tip/numa/core.


 arch/x86/mm/gup.c                 |   23 ++++++++++--
 include/linux/mm.h                |   72 ++++++++++++++++++++++++-------------
 include/linux/mm_types.h          |    4 +-
 include/linux/page-flags-layout.h |   25 ++++++++-----
 mm/huge_memory.c                  |    2 +-
 mm/memory.c                       |    6 ++--
 mm/mempolicy.c                    |   20 ++++++++---
 mm/migrate.c                      |    4 +-
 mm/mm_init.c                      |   10 +++---
 mm/mmzone.c                       |   14 ++++----
 mm/page_alloc.c                   |    4 +-
 11 files changed, 120 insertions(+), 64 deletions(-)

--
Thanks and Regards
Srikar


-- 
Thanks and Regards
Srikar Dronamraju

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