Hello everyone, It's time for a new AutoNUMA19 release. The objective of AutoNUMA is to be able to perform as close as possible to (and sometime faster than) the NUMA hard CPU/memory bindings setups, without requiring the administrator to manually setup any NUMA hard bind. https://www.kernel.org/pub/linux/kernel/people/andrea/autonuma/autonuma_bench-20120530.pdf (NOTE: the TODO slide is obsolete) git clone --reference linux -b autonuma19 git://git.kernel.org/pub/scm/linux/kernel/git/andrea/aa.git autonuma19 Development autonuma branch: git clone --reference linux -b autonuma git://git.kernel.org/pub/scm/linux/kernel/git/andrea/aa.git To update: git fetch git checkout -f origin/autonuma Changelog from AutoNUMA-alpha14 to AutoNUMA19: o sched_autonuma_balance callout location removed from schedule() now it runs in the softirq along with CFS load_balancing o lots of documentation about the math in the sched_autonuma_balance algorithm o fixed a bug in the fast path detection in sched_autonuma_balance that could decrease performance with many nodes o reduced the page_autonuma memory overhead to from 32 to 12 bytes per page o fixed a crash in __pmd_numa_fixup o knuma_numad won't scan VM_MIXEDMAP|PFNMAP (it never touched those ptes anyway) o fixed a crash in autonuma_exit o fixed a crash when split_huge_page returns 0 in knuma_migratedN as the page has been freed already o assorted cleanups and probably more Changelog from alpha13 to alpha14: o page_autonuma introduction, no memory wasted if the kernel is booted on not-NUMA hardware. Tested with flatmem/sparsemem on x86 autonuma=y/n and sparsemem/vsparsemem on x86_64 with autonuma=y/n. "noautonuma" kernel param disables autonuma permanently also when booted on NUMA hardware (no /sys/kernel/mm/autonuma, and no page_autonuma allocations, like cgroup_disable=memory) o autonuma_balance only runs along with run_rebalance_domains, to avoid altering the usual scheduler runtime. autonuma_balance gives a "kick" to the scheduler after a rebalance (it overrides the load balance activity if needed). It's not yet tested on specjbb or more schedule intensive benchmark, hopefully there's no NUMA regression. For intensive compute loads not involving a flood of scheduling activity this doesn't show any performance regression, and it avoids altering the strict schedule performance. It goes in the direction of being less intrusive with the stock scheduler runtime. Note: autonuma_balance still runs from normal context (not softirq context like run_rebalance_domains) to be able to wait on process migration (avoid _nowait), but most of the time it does nothing at all. Changelog from alpha11 to alpha13: o autonuma_balance optimization (take the fast path when process is in the preferred NUMA node) TODO: o THP native migration (orthogonal and also needed for cpuset/migrate_pages(2)/numa/sched). o port to ppc64, Ben? Any arch able to support PROT_NONE can also support AutoNUMA, in short all archs should work fine with AutoNUMA. Andrea Arcangeli (40): mm: add unlikely to the mm allocation failure check autonuma: make set_pmd_at always available autonuma: export is_vma_temporary_stack() even if CONFIG_TRANSPARENT_HUGEPAGE=n xen: document Xen is using an unused bit for the pagetables autonuma: define _PAGE_NUMA_PTE and _PAGE_NUMA_PMD autonuma: x86 pte_numa() and pmd_numa() autonuma: generic pte_numa() and pmd_numa() autonuma: teach gup_fast about pte_numa autonuma: introduce kthread_bind_node() autonuma: mm_autonuma and sched_autonuma data structures autonuma: define the autonuma flags autonuma: core autonuma.h header autonuma: CPU follow memory algorithm autonuma: add page structure fields autonuma: knuma_migrated per NUMA node queues autonuma: init knuma_migrated queues autonuma: autonuma_enter/exit autonuma: call autonuma_setup_new_exec() autonuma: alloc/free/init sched_autonuma autonuma: alloc/free/init mm_autonuma autonuma: avoid CFS select_task_rq_fair to return -1 autonuma: teach CFS about autonuma affinity autonuma: sched_set_autonuma_need_balance autonuma: core autonuma: follow_page check for pte_numa/pmd_numa autonuma: default mempolicy follow AutoNUMA autonuma: call autonuma_split_huge_page() autonuma: make khugepaged pte_numa aware autonuma: retain page last_nid information in khugepaged autonuma: numa hinting page faults entry points autonuma: reset autonuma page data when pages are freed autonuma: initialize page structure fields autonuma: link mm/autonuma.o and kernel/sched/numa.o autonuma: add CONFIG_AUTONUMA and CONFIG_AUTONUMA_DEFAULT_ENABLED autonuma: boost khugepaged scanning rate autonuma: page_autonuma autonuma: page_autonuma change #include for sparse autonuma: autonuma_migrate_head[0] dynamic size autonuma: bugcheck page_autonuma fields on newly allocated pages autonuma: shrink the per-page page_autonuma struct size arch/x86/include/asm/paravirt.h | 2 - arch/x86/include/asm/pgtable.h | 51 ++- arch/x86/include/asm/pgtable_types.h | 22 +- arch/x86/mm/gup.c | 2 +- arch/x86/mm/numa.c | 6 +- arch/x86/mm/numa_32.c | 3 +- fs/exec.c | 3 + include/asm-generic/pgtable.h | 12 + include/linux/autonuma.h | 64 ++ include/linux/autonuma_flags.h | 68 ++ include/linux/autonuma_list.h | 94 ++ include/linux/autonuma_sched.h | 50 ++ include/linux/autonuma_types.h | 130 +++ include/linux/huge_mm.h | 6 +- include/linux/kthread.h | 1 + include/linux/memory_hotplug.h | 3 +- include/linux/mm_types.h | 5 + include/linux/mmzone.h | 25 + include/linux/page_autonuma.h | 59 ++ include/linux/sched.h | 5 +- init/main.c | 2 + kernel/fork.c | 36 +- kernel/kthread.c | 23 + kernel/sched/Makefile | 1 + kernel/sched/core.c | 1 + kernel/sched/fair.c | 72 ++- kernel/sched/numa.c | 586 +++++++++++++ kernel/sched/sched.h | 18 + mm/Kconfig | 13 + mm/Makefile | 1 + mm/autonuma.c | 1549 ++++++++++++++++++++++++++++++++++ mm/autonuma_list.c | 167 ++++ mm/huge_memory.c | 59 ++- mm/memory.c | 35 +- mm/memory_hotplug.c | 2 +- mm/mempolicy.c | 15 +- mm/mmu_context.c | 2 + mm/page_alloc.c | 5 + mm/page_autonuma.c | 236 ++++++ mm/sparse.c | 126 +++- 40 files changed, 3512 insertions(+), 48 deletions(-) create mode 100644 include/linux/autonuma.h create mode 100644 include/linux/autonuma_flags.h create mode 100644 include/linux/autonuma_list.h create mode 100644 include/linux/autonuma_sched.h create mode 100644 include/linux/autonuma_types.h create mode 100644 include/linux/page_autonuma.h create mode 100644 kernel/sched/numa.c create mode 100644 mm/autonuma.c create mode 100644 mm/autonuma_list.c create mode 100644 mm/page_autonuma.c -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. 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