Mel Gorman b8593bfda1 mm: sched: Adapt the scanning rate if a NUMA hinting fault does not migrate ... The PTE scanning rate and fault rates are two of the biggest sources of system CPU overhead with automatic NUMA placement. Ideally a proper policy would detect if a workload was properly placed, schedule and adjust the PTE scanning rate accordingly. We do not track the necessary information to do that but we at least know if we migrated or not. This patch scans slower if a page was not migrated as the result of a NUMA hinting fault up to sysctl_numa_balancing_scan_period_max which is now higher than the previous default. Once every minute it will reset the scanner in case of phase changes. This is hilariously crude and the numbers are arbitrary. Workloads will converge quite slowly in comparison to what a proper policy should be able to do. On the plus side, we will chew up less CPU for workloads that have no need for automatic balancing. Signed-off-by: Mel Gorman <mgorman@suse.de>		2012-12-11 14:42:55 +00:00
..
backing-dev.c	backing-dev: use kstrto* in preference to simple_strtoul	2012-08-25 16:58:14 +08:00
bootmem.c	revert "mm: fix-up zone present pages"	2012-11-16 14:33:04 -08:00
bounce.c
cleancache.c
compaction.c	mm: compaction: Add scanned and isolated counters for compaction	2012-12-11 14:28:35 +00:00
debug-pagealloc.c
dmapool.c
fadvise.c	switch simple cases of fget_light to fdget	2012-09-26 22:20:08 -04:00
failslab.c
filemap.c	readahead: fault retry breaks mmap file read random detection	2012-10-09 16:22:47 +09:00
filemap_xip.c	mm: move all mmu notifier invocations to be done outside the PT lock	2012-10-09 16:22:58 +09:00
fremap.c	remap_file_pages: correctly handle the case of a NULL vm_ops pointer	2012-10-19 13:37:57 -07:00
frontswap.c	frontswap: support exclusive gets if tmem backend is capable	2012-09-21 10:38:12 -04:00
highmem.c	mm: highmem: don't treat PKMAP_ADDR(LAST_PKMAP) as a highmem address	2012-11-16 14:33:04 -08:00
huge_memory.c	mm: sched: Adapt the scanning rate if a NUMA hinting fault does not migrate	2012-12-11 14:42:55 +00:00
hugetlb.c	mm: Count the number of pages affected in change_protection()	2012-12-11 14:28:34 +00:00
hugetlb_cgroup.c
hwpoison-inject.c
init-mm.c
internal.h	mm, thp: fix mlock statistics	2012-10-09 16:23:03 +09:00
interval_tree.c	mm: add CONFIG_DEBUG_VM_RB build option	2012-10-09 16:22:42 +09:00
Kconfig	mm: enable CONFIG_COMPACTION by default	2012-10-09 16:22:53 +09:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c	kmemleak: use rbtree instead of prio tree	2012-10-09 16:22:39 +09:00
ksm.c	mm: wrap calls to set_pte_at_notify with invalidate_range_start and invalidate_range_end	2012-10-09 16:22:58 +09:00
maccess.c
madvise.c	mm: prepare VM_DONTDUMP for using in drivers	2012-10-09 16:22:18 +09:00
Makefile	mm: replace vma prio_tree with an interval tree	2012-10-09 16:22:39 +09:00
memblock.c	x86, mm: Trim memory in memblock to be page aligned	2012-10-24 11:52:21 -07:00
memcontrol.c	memcg: fix hotplugged memory zone oops	2012-11-16 14:33:04 -08:00
memory-failure.c	mm: migrate: Add a tracepoint for migrate_pages	2012-12-11 14:28:35 +00:00
memory.c	mm: sched: Adapt the scanning rate if a NUMA hinting fault does not migrate	2012-12-11 14:42:55 +00:00
memory_hotplug.c	mm: migrate: Add a tracepoint for migrate_pages	2012-12-11 14:28:35 +00:00
mempolicy.c	mm: numa: Use a two-stage filter to restrict pages being migrated for unlikely task<->node relationships	2012-12-11 14:42:54 +00:00
mempool.c
migrate.c	mm: numa: migrate: Set last_nid on newly allocated page	2012-12-11 14:42:53 +00:00
mincore.c
mlock.c	mm, thp: fix mlock statistics	2012-10-09 16:23:03 +09:00
mm_init.c
mmap.c	mm: add anon_vma_lock to validate_mm()	2012-11-16 14:33:03 -08:00
mmu_context.c
mmu_notifier.c	mm/mmu_notifier: allocate mmu_notifier in advance	2012-10-25 14:37:53 -07:00
mmzone.c	memcg: fix hotplugged memory zone oops	2012-11-16 14:33:04 -08:00
mprotect.c	mm: numa: Migrate pages handled during a pmd_numa hinting fault	2012-12-11 14:42:49 +00:00
mremap.c	mm: move all mmu notifier invocations to be done outside the PT lock	2012-10-09 16:22:58 +09:00
msync.c
nobootmem.c	revert "mm: fix-up zone present pages"	2012-11-16 14:33:04 -08:00
nommu.c	mm: replace vma prio_tree with an interval tree	2012-10-09 16:22:39 +09:00
oom_kill.c	oom: remove deprecated oom_adj	2012-10-09 16:22:24 +09:00
page-writeback.c	CPU hotplug, writeback: Don't call writeback_set_ratelimit() too often during hotplug	2012-09-28 20:27:49 +08:00
page_alloc.c	mm: numa: Introduce last_nid to the page frame	2012-12-11 14:42:52 +00:00
page_cgroup.c
page_io.c
page_isolation.c	mm/page_alloc: refactor out __alloc_contig_migrate_alloc()	2012-10-09 16:22:52 +09:00
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c	sections: fix section conflicts in mm/percpu.c	2012-10-06 03:04:44 +09:00
pgtable-generic.c	mm: Only flush the TLB when clearing an accessible pte	2012-12-11 14:28:34 +00:00
process_vm_access.c
quicklist.c
readahead.c	switch simple cases of fget_light to fdget	2012-09-26 22:20:08 -04:00
rmap.c	mm: fix XFS oops due to dirty pages without buffers on s390	2012-10-25 14:37:52 -07:00
shmem.c	tmpfs: change final i_blocks BUG to WARNING	2012-11-16 14:33:04 -08:00
slab.c	Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2012-10-07 07:53:13 +09:00
slab.h	Revert "mm/sl[aou]b: Move sysfs_slab_add to common"	2012-09-05 12:07:44 +03:00
slab_common.c	mm, slab: release slab_mutex earlier in kmem_cache_destroy()	2012-10-10 09:25:08 +03:00
slob.c	Merge branch 'testing/driver-warnings' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into fixes	2012-10-19 15:40:18 -07:00
slub.c	Merge branch 'slab/common-for-cgroups' into slab/for-linus	2012-10-03 09:56:37 +03:00
sparse-vmemmap.c
sparse.c
swap.c	mm: remove vma arg from page_evictable	2012-10-09 16:22:55 +09:00
swap_state.c
swapfile.c	swapfile: fix name leak in swapoff	2012-11-16 14:33:04 -08:00
truncate.c	mm: use clear_page_mlock() in page_remove_rmap()	2012-10-09 16:22:56 +09:00
util.c	mm: Use __do_krealloc to do the krealloc job	2012-09-04 10:22:58 +03:00
vmalloc.c	mm: use %pK for /proc/vmallocinfo	2012-10-09 16:23:03 +09:00
vmscan.c	mm: revert "mm: vmscan: scale number of pages reclaimed by reclaim/compaction based on failures"	2012-11-16 14:33:04 -08:00
vmstat.c	mm: numa: Add pte updates, hinting and migration stats	2012-12-11 14:42:48 +00:00