Rik van Riel b5dd77c8bd sched/numa: Scale scan period with tasks in group and shared/private ...

Running 80 tasks in the same group, or as threads of the same process,
results in the memory getting scanned 80x as fast as it would be if a
single task was using the memory.

This really hurts some workloads.

Scale the scan period by the number of tasks in the numa group, and
the shared / private ratio, so the average rate at which memory in
the group is scanned corresponds roughly to the rate at which a single
task would scan its memory.

Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: jhladky@redhat.com
Cc: lvenanci@redhat.com
Link: http://lkml.kernel.org/r/20170731192847.23050-3-riel@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2017-08-10 12:18:16 +02:00

..

bpf

bpf: fix bpf_prog_get_info_by_fd to dump correct xlated_prog_len

2017-07-29 23:29:41 -07:00

cgroup

cpuset: fix a deadlock due to incomplete patching of cpusets_enabled()

2017-08-02 17:16:12 -07:00

configs

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debug

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events

Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-07-21 11:12:48 -07:00

gcov

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irq

genirq/cpuhotplug: Revert "Set force affinity flag on hotplug migration"

2017-07-27 15:40:02 +02:00

livepatch

livepatch: Fix stacking of patches with respect to RCU

2017-06-20 10:42:19 +02:00

locking

Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-07-21 11:11:23 -07:00

power

Merge tag 'pm-extra-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2017-07-10 15:16:21 -07:00

printk

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk

2017-07-05 11:11:26 -07:00

rcu

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sched

sched/numa: Scale scan period with tasks in group and shared/private

2017-08-10 12:18:16 +02:00

time

timers: Fix overflow in get_next_timer_interrupt

2017-08-01 14:20:53 +02:00

trace

trace: fix the errors caused by incompatible type of RCU variables

2017-07-20 09:27:29 -04:00

.gitignore

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acct.c

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async.c

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audit_fsnotify.c

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audit_tree.c

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audit_watch.c

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audit.c

Merge branch 'stable-4.13' of git://git.infradead.org/users/pcmoore/audit

2017-07-20 10:22:26 -07:00

audit.h

audit: style fix

2017-06-12 18:07:43 -04:00

auditfilter.c

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auditsc.c

Merge branch 'stable-4.13' of git://git.infradead.org/users/pcmoore/audit

2017-07-05 11:24:05 -07:00

backtracetest.c

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bounds.c

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capability.c

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compat.c

Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-07-06 20:57:13 -07:00

configs.c

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context_tracking.c

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cpu_pm.c

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cpu.c

smp/hotplug: Replace BUG_ON and react useful

2017-07-11 22:25:44 +02:00

crash_core.c

kdump: protect vmcoreinfo data under the crash memory

2017-07-12 16:26:00 -07:00

crash_dump.c

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cred.c

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delayacct.c

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dma.c

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elfcore.c

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exec_domain.c

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exit.c

kernel/exit.c: avoid undefined behaviour when calling wait4()

2017-07-10 16:32:36 -07:00

extable.c

lib/extable.c: use bsearch() library function in search_extable()

2017-07-10 16:32:35 -07:00

fork.c

fork,random: use get_random_canary() to set tsk->stack_canary

2017-07-12 16:26:03 -07:00

freezer.c

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futex_compat.c

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futex.c

futex: Remove unnecessary warning from get_futex_key

2017-08-09 14:00:54 -07:00

groups.c

kernel/groups.c: use sort library function

2017-07-10 16:32:34 -07:00

hung_task.c

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irq_work.c

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jump_label.c

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kallsyms.c

kernel/kallsyms.c: replace all_var with IS_ENABLED(CONFIG_KALLSYMS_ALL)

2017-07-10 16:32:34 -07:00

kcmp.c

kcmp: add KCMP_EPOLL_TFD mode to compare epoll target files

2017-07-12 16:26:01 -07:00

Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

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kcov.c

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kexec_core.c

kdump: protect vmcoreinfo data under the crash memory

2017-07-12 16:26:00 -07:00

kexec_file.c

kexec_file: adjust declaration of kexec_purgatory

2017-07-12 16:26:02 -07:00

kexec_internal.h

kexec_file: adjust declaration of kexec_purgatory

2017-07-12 16:26:02 -07:00

kexec.c

kdump: protect vmcoreinfo data under the crash memory

2017-07-12 16:26:00 -07:00

kmod.c

kmod: throttle kmod thread limit

2017-07-14 15:05:13 -07:00

kprobes.c

kprobes: Ensure that jprobe probepoints are at function entry

2017-07-08 11:05:35 +02:00

ksysfs.c

kexec: move vmcoreinfo out of the kernel's .bss section

2017-07-12 16:25:59 -07:00

kthread.c

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latencytop.c

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Makefile

kernel/watchdog: split up config options

2017-07-12 16:26:02 -07:00

membarrier.c

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memremap.c

mm, memory_hotplug: replace for_device by want_memblock in arch_add_memory

2017-07-06 16:24:32 -07:00

module_signing.c

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module-internal.h

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module.c

Merge tag 'modules-for-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

2017-07-12 17:22:01 -07:00

notifier.c

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nsproxy.c

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padata.c

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panic.c

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params.c

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pid_namespace.c

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pid.c

pid: kill pidhash_size in pidhash_init()

2017-08-02 16:34:46 -07:00

profile.c

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ptrace.c

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range.c

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reboot.c

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relay.c

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resource.c

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seccomp.c

seccomp: Switch from atomic_t to recount_t

2017-06-26 09:24:00 -07:00

signal.c

Fix compat_sys_sigpending breakage

2017-08-06 11:48:27 -07:00

smp.c

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smpboot.c

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smpboot.h

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softirq.c

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stacktrace.c

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stop_machine.c

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sys_ni.c

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sys.c

fix a braino in compat_sys_getrlimit()

2017-07-12 09:15:00 -07:00

sysctl_binary.c

kernel/sysctl_binary.c: check name array length in deprecated_sysctl_warning()

2017-07-12 16:26:00 -07:00

sysctl.c

kernel/watchdog: split up config options

2017-07-12 16:26:02 -07:00

task_work.c

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taskstats.c

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test_kprobes.c

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torture.c

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tracepoint.c

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tsacct.c

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ucount.c

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uid16.c

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up.c

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user_namespace.c

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user-return-notifier.c

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user.c

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utsname_sysctl.c

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utsname.c

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watchdog_hld.c

kernel/watchdog: split up config options

2017-07-12 16:26:02 -07:00

watchdog.c

kernel/watchdog.c: use better pr_fmt prefix

2017-07-14 15:05:13 -07:00

workqueue_internal.h

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workqueue.c

workqueue: Work around edge cases for calc of pool's cpumask

2017-07-28 11:05:52 -04:00