linux_dsm_epyc7002/kernel
Mel Gorman fb003b80da sched: numa: Slowly increase the scanning period as NUMA faults are handled
Currently the rate of scanning for an address space is controlled
by the individual tasks. The next scan is simply determined by
2*p->numa_scan_period.

The 2*p->numa_scan_period is arbitrary and never changes. At this point
there is still no proper policy that decides if a task or process is
properly placed. It just scans and assumes the next NUMA fault will
place it properly. As it is assumed that pages will get properly placed
over time, increase the scan window each time a fault is incurred. This
is a big assumption as noted in the comments.

It should be noted that changing to p->numa_scan_period will increase
system CPU usage because now the scanning rate has effectively doubled.
If that is a problem then the min_rate should be made 200ms instead of
restoring the 2* logic.

Signed-off-by: Mel Gorman <mgorman@suse.de>
2012-12-11 14:42:51 +00:00
..
debug KGDB/KDB fixes and cleanups 2012-10-13 11:16:58 +09:00
events Merge branch 'uprobes/core' of git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc into perf/urgent 2012-10-21 18:18:17 +02:00
gcov
irq irqdomain: augment add_simple() to allocate descs 2012-10-10 08:57:26 +02:00
power Merge branch 'pm-qos' 2012-09-17 20:25:51 +02:00
sched sched: numa: Slowly increase the scanning period as NUMA faults are handled 2012-12-11 14:42:51 +00:00
time Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-10-12 22:17:48 +09:00
trace Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/urgent 2012-10-21 19:53:34 +02:00
.gitignore
acct.c vfs: make path_openat take a struct filename pointer 2012-10-12 20:15:09 -04:00
async.c [SCSI] async: make async_synchronize_full() flush all work regardless of domain 2012-07-20 09:07:37 +01:00
audit_tree.c audit: clean up refcounting in audit-tree 2012-08-15 12:55:22 +02:00
audit_watch.c audit: optimize audit_compare_dname_path 2012-10-12 00:32:02 -04:00
audit.c fs: handle failed audit_log_start properly 2012-10-09 23:33:37 -04:00
audit.h audit: optimize audit_compare_dname_path 2012-10-12 00:32:02 -04:00
auditfilter.c audit: optimize audit_compare_dname_path 2012-10-12 00:32:02 -04:00
auditsc.c audit: make audit_inode take struct filename 2012-10-12 20:15:09 -04:00
backtracetest.c
bounds.c
capability.c
cgroup_freezer.c cgroup: mark subsystems with broken hierarchy support and whine if cgroups are nested for them 2012-09-14 12:01:16 -07:00
cgroup.c Revert "cgroup: Remove task_lock() from cgroup_post_fork()" 2012-10-19 14:09:35 -07:00
compat.c
configs.c
cpu_pm.c
cpu.c CPU hotplug, debug: detect imbalance between get_online_cpus() and put_online_cpus() 2012-10-09 16:22:15 +09:00
cpuset.c cpusets: Remove/update outdated comments 2012-07-24 13:53:28 +02:00
crash_dump.c
cred.c userns: Make credential debugging user namespace safe. 2012-08-23 22:54:18 -07:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2012-10-02 20:25:04 -07:00
extable.c
fork.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2012-10-10 12:02:25 +09:00
freezer.c
futex_compat.c
futex.c futex: Handle futex_pi OWNER_DIED take over correctly 2012-11-01 12:06:54 +01:00
groups.c
hrtimer.c hrtimer: Update hrtimer base offsets each hrtimer_interrupt 2012-07-11 23:34:39 +02:00
hung_task.c
irq_work.c
itimer.c
jump_label.c jump_label: Export jump_label_rate_limit() 2012-08-06 19:00:35 +03:00
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks locking: Adjust spin lock inlining Kconfig options 2012-09-13 17:56:13 +02:00
Kconfig.preempt
kexec.c kdump: remove unneeded include 2012-10-06 03:05:19 +09:00
kfifo.c
kmod.c infrastructure for saner ret_from_kernel_thread semantics 2012-10-12 13:35:07 -04:00
kprobes.c kprobes/x86: Fix to support jprobes on ftrace-based kprobe 2012-09-13 22:52:11 -04:00
ksysfs.c
kthread.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2012-10-13 10:05:52 +09:00
latencytop.c
lglock.c
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
lockdep.c lockdep: Check if nested lock is actually held 2012-09-13 17:00:44 +02:00
Makefile Makefile: Documentation for external tool should be correct 2012-10-25 16:00:53 -07:00
modsign_pubkey.c MODSIGN: Provide module signing public keys to the kernel 2012-10-10 20:01:22 +10:30
module_signing.c module_signing: fix printk format warning 2012-10-22 08:56:34 +03:00
module-internal.h MODSIGN: Move the magic string to the end of a module and eliminate the search 2012-10-19 17:30:40 -07:00
module.c module: fix out-by-one error in kallsyms 2012-10-31 13:56:37 +10:30
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
nsproxy.c
padata.c
panic.c panic: fix a possible deadlock in panic() 2012-07-30 17:25:13 -07:00
params.c
pid_namespace.c pidns: limit the nesting depth of pid namespaces 2012-10-25 14:37:53 -07:00
pid.c net ip6 flowlabel: Make owner a union of struct pid * and kuid_t 2012-08-14 21:49:25 -07:00
posix-cpu-timers.c
posix-timers.c
printk.c printk: Fix scheduling-while-atomic problem in console_cpu_notify() 2012-10-16 18:17:44 -07:00
profile.c
ptrace.c ptrace: mark __ptrace_may_access() static 2012-08-03 14:47:17 +10:00
range.c
rcu.h
rcupdate.c rcu: Add PROVE_RCU_DELAY to provoke difficult races 2012-09-23 07:42:49 -07:00
rcutiny_plugin.h rcu: Move TINY_PREEMPT_RCU away from raw_local_irq_save() 2012-09-23 07:42:51 -07:00
rcutiny.c rcu: Move TINY_RCU quiescent state out of extended quiescent state 2012-09-23 07:42:52 -07:00
rcutorture.c rcu: Prevent initialization race in rcutorture kthreads 2012-09-23 07:42:23 -07:00
rcutree_plugin.h rcu: Make RCU_FAST_NO_HZ handle adaptive ticks 2012-09-26 15:44:02 +02:00
rcutree_trace.c Merge remote-tracking branch 'tip/smp/hotplug' into next.2012.09.25b 2012-09-25 10:01:45 -07:00
rcutree.c rcu: Grace-period initialization excludes only RCU notifier 2012-10-08 09:06:38 -07:00
rcutree.h rcu: Grace-period initialization excludes only RCU notifier 2012-10-08 09:06:38 -07:00
relay.c splice: fix racy pipe->buffers uses 2012-06-13 21:16:42 +02:00
res_counter.c
resource.c kernel/resource.c: fix stack overflow in __reserve_region_with_split() 2012-10-06 03:05:31 +09:00
rtmutex_common.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rwsem.c
seccomp.c
semaphore.c
signal.c coredump: pass siginfo_t* to do_coredump() and below, not merely signr 2012-10-06 03:05:16 +09:00
smp.c smp: Remove ipi_call_lock[_irq]()/ipi_call_unlock[_irq]() 2012-06-05 17:27:14 +02:00
smpboot.c hotplug: Fix UP bug in smpboot hotplug code 2012-08-13 17:01:07 +02:00
smpboot.h smpboot: Provide infrastructure for percpu hotplug threads 2012-08-13 17:01:07 +02:00
softirq.c Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-10-01 10:43:39 -07:00
spinlock.c
srcu.c workqueue: deprecate system_nrt[_freezable]_wq 2012-08-20 14:51:24 -07:00
stacktrace.c
stop_machine.c
sys_ni.c
sys.c use clamp_t in UNAME26 fix 2012-10-19 18:51:17 -07:00
sysctl_binary.c mm: prepare for removal of obsolete /proc/sys/vm/nr_pdflush_threads 2012-07-31 18:42:40 -07:00
sysctl.c mm: sched: numa: Implement slow start for working set sampling 2012-12-11 14:42:47 +00:00
task_work.c task_work: task_work_add() should not succeed after exit_task_work() 2012-09-13 16:47:34 +02:00
taskstats.c taskstats: cgroupstats_user_cmd() may leak on error 2012-10-06 03:05:31 +09:00
test_kprobes.c
time.c time: Move update_vsyscall definitions to timekeeper_internal.h 2012-09-24 12:38:06 -04:00
timeconst.pl
timer.c timers: Fix endless looping between cascade() and internal_add_timer() 2012-10-09 21:27:14 +02:00
tracepoint.c
tsacct.c userns: Convert taskstats to handle the user and pid namespaces. 2012-09-18 01:01:32 -07:00
uid16.c
up.c
user_namespace.c userns: Add kprojid_t and associated infrastructure in projid.h 2012-09-18 01:01:37 -07:00
user-return-notifier.c
user.c userns: Add kprojid_t and associated infrastructure in projid.h 2012-09-18 01:01:37 -07:00
utsname_sysctl.c
utsname.c
wait.c
watchdog.c watchdog: Use hotplug thread infrastructure 2012-08-13 17:01:07 +02:00
workqueue_sched.h
workqueue.c workqueue: cancel_delayed_work() should return %false if work item is idle 2012-10-24 12:38:16 -07:00