From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753796Ab2LLKDs (ORCPT ); Wed, 12 Dec 2012 05:03:48 -0500 Received: from cantor2.suse.de ([195.135.220.15]:55047 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750987Ab2LLKDp (ORCPT ); Wed, 12 Dec 2012 05:03:45 -0500 Date: Wed, 12 Dec 2012 10:03:38 +0000 From: Mel Gorman To: Linus Torvalds Cc: Peter Zijlstra , Andrea Arcangeli , Ingo Molnar , Rik van Riel , Johannes Weiner , Hugh Dickins , Thomas Gleixner , Paul Turner , Hillf Danton , David Rientjes , Lee Schermerhorn , Alex Shi , Srikar Dronamraju , Aneesh Kumar , Andrew Morton , LKML Subject: [GIT PULL] Automatic NUMA Balancing V11 Message-ID: <20121212100338.GS1009@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Linus, This is a pull request for "Automatic NUMA Balancing V11". The list of changes since commit f4a75d2eb7b1e2206094b901be09adb31ba63681: Linux 3.7-rc6 (2012-11-16 17:42:40 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/mel/linux-balancenuma.git balancenuma-v11 for you to fetch changes up to 4fc3f1d66b1ef0d7b8dc11f4ff1cc510f78b37d6: mm/rmap, migration: Make rmap_walk_anon() and try_to_unmap_anon() more scalable (2012-12-11 14:43:00 +0000) There are three implementations for NUMA balancing, this tree (balancenuma), numacore which has been developed in tip/master and autonuma which is in aa.git. In almost all respects balancenuma is the dumbest of the three because its main impact is on the VM side with no attempt to be smart about scheduling. In the interest of getting the ball rolling, it would be desirable to see this much merged for 3.8 with the view to building scheduler smarts on top and adapting the VM where required for 3.9. The most recent set of comparisons available from different people are mel: https://lkml.org/lkml/2012/12/9/108 mingo: https://lkml.org/lkml/2012/12/7/331 tglx: https://lkml.org/lkml/2012/12/10/437 srikar: https://lkml.org/lkml/2012/12/10/397 The results are a mixed bag. In my own tests, balancenuma does reasonably well. It's dumb as rocks and does not regress against mainline. On the other hand, Ingo's tests shows that balancenuma is incapable of converging for this workloads driven by perf which is bad but is potentially explained by the lack of scheduler smarts. Thomas' results show balancenuma improves on mainline but falls far short of numacore or autonuma. Srikar's results indicate we all suffer on a large machine with imbalanced node sizes. My own testing showed that recent numacore results have improved dramatically, particularly in the last week but not universally. We've butted heads heavily on system CPU usage and high levels of migration even when it shows that overall performance is better. There are also cases where it regresses. Of interest is that for specjbb in some configurations it will regress for lower numbers of warehouses and show gains for higher numbers which is not reported by the tool by default and sometimes missed in treports. Recently I reported for numacore that the JVM was crashing with NullPointerExceptions but currently it's unclear what the source of this problem is. Initially I thought it was in how numacore batch handles PTEs but I'm no longer think this is the case. It's possible numacore is just able to trigger it due to higher rates of migration. These reports were quite late in the cycle so I/we would like to start with this tree as it contains much of the code we can agree on and has not changed significantly over the last 2-3 weeks. Thanks. Andrea Arcangeli (5): mm: numa: define _PAGE_NUMA mm: numa: pte_numa() and pmd_numa() mm: numa: Support NUMA hinting page faults from gup/gup_fast mm: numa: split_huge_page: transfer the NUMA type from the pmd to the pte mm: numa: Structures for Migrate On Fault per NUMA migration rate limiting Hillf Danton (2): mm: numa: split_huge_page: Transfer last_nid on tail page mm: numa: migrate: Set last_nid on newly allocated page Ingo Molnar (3): mm: Optimize the TLB flush of sys_mprotect() and change_protection() users mm/rmap: Convert the struct anon_vma::mutex to an rwsem mm/rmap, migration: Make rmap_walk_anon() and try_to_unmap_anon() more scalable Lee Schermerhorn (3): mm: mempolicy: Add MPOL_NOOP mm: mempolicy: Check for misplaced page mm: mempolicy: Add MPOL_MF_LAZY Mel Gorman (26): mm: Check if PTE is already allocated during page fault mm: compaction: Move migration fail/success stats to migrate.c mm: migrate: Add a tracepoint for migrate_pages mm: compaction: Add scanned and isolated counters for compaction mm: numa: Create basic numa page hinting infrastructure mm: migrate: Drop the misplaced pages reference count if the target node is full mm: mempolicy: Use _PAGE_NUMA to migrate pages mm: mempolicy: Implement change_prot_numa() in terms of change_protection() mm: mempolicy: Hide MPOL_NOOP and MPOL_MF_LAZY from userspace for now sched, numa, mm: Count WS scanning against present PTEs, not virtual memory ranges mm: numa: Add pte updates, hinting and migration stats mm: numa: Migrate on reference policy mm: numa: Migrate pages handled during a pmd_numa hinting fault mm: numa: Rate limit the amount of memory that is migrated between nodes mm: numa: Rate limit setting of pte_numa if node is saturated sched: numa: Slowly increase the scanning period as NUMA faults are handled mm: numa: Introduce last_nid to the page frame mm: numa: Use a two-stage filter to restrict pages being migrated for unlikely task<->node relationships mm: sched: Adapt the scanning rate if a NUMA hinting fault does not migrate mm: sched: numa: Control enabling and disabling of NUMA balancing mm: sched: numa: Control enabling and disabling of NUMA balancing if !SCHED_DEBUG mm: sched: numa: Delay PTE scanning until a task is scheduled on a new node mm: numa: Add THP migration for the NUMA working set scanning fault case. mm: numa: Add THP migration for the NUMA working set scanning fault case build fix mm: numa: Account for failed allocations and isolations as migration failures mm: migrate: Account a transhuge page properly when rate limiting Peter Zijlstra (6): mm: Count the number of pages affected in change_protection() mm: mempolicy: Make MPOL_LOCAL a real policy mm: migrate: Introduce migrate_misplaced_page() mm: numa: Add fault driven placement and migration mm: sched: numa: Implement constant, per task Working Set Sampling (WSS) rate mm: sched: numa: Implement slow start for working set sampling Rik van Riel (5): x86: mm: only do a local tlb flush in ptep_set_access_flags() x86: mm: drop TLB flush from ptep_set_access_flags mm,generic: only flush the local TLB in ptep_set_access_flags x86/mm: Introduce pte_accessible() mm: Only flush the TLB when clearing an accessible pte Documentation/kernel-parameters.txt | 3 + arch/sh/mm/Kconfig | 1 + arch/x86/Kconfig | 2 + arch/x86/include/asm/pgtable.h | 17 +- arch/x86/include/asm/pgtable_types.h | 20 ++ arch/x86/mm/pgtable.c | 8 +- include/asm-generic/pgtable.h | 110 +++++++++++ include/linux/huge_mm.h | 16 +- include/linux/hugetlb.h | 8 +- include/linux/mempolicy.h | 8 + include/linux/migrate.h | 47 ++++- include/linux/mm.h | 39 ++++ include/linux/mm_types.h | 31 ++++ include/linux/mmzone.h | 13 ++ include/linux/rmap.h | 33 ++-- include/linux/sched.h | 27 +++ include/linux/vm_event_item.h | 12 +- include/linux/vmstat.h | 8 + include/trace/events/migrate.h | 51 +++++ include/uapi/linux/mempolicy.h | 15 +- init/Kconfig | 45 +++++ kernel/fork.c | 3 + kernel/sched/core.c | 71 +++++-- kernel/sched/fair.c | 227 +++++++++++++++++++++++ kernel/sched/features.h | 11 ++ kernel/sched/sched.h | 12 ++ kernel/sysctl.c | 45 ++++- mm/compaction.c | 15 +- mm/huge_memory.c | 108 ++++++++++- mm/hugetlb.c | 10 +- mm/internal.h | 7 +- mm/ksm.c | 6 +- mm/memcontrol.c | 7 +- mm/memory-failure.c | 7 +- mm/memory.c | 199 +++++++++++++++++++- mm/memory_hotplug.c | 3 +- mm/mempolicy.c | 283 +++++++++++++++++++++++++--- mm/migrate.c | 337 +++++++++++++++++++++++++++++++++- mm/mmap.c | 10 +- mm/mprotect.c | 135 +++++++++++--- mm/mremap.c | 2 +- mm/page_alloc.c | 10 +- mm/pgtable-generic.c | 9 +- mm/rmap.c | 66 +++---- mm/vmstat.c | 16 +- 45 files changed, 1940 insertions(+), 173 deletions(-) create mode 100644 include/trace/events/migrate.h -- Mel Gorman SUSE Labs