The patch titled
sched domain: increase the SMT busy rebalance interval
has been removed from the -mm tree. Its filename was
sched-domain-increase-the-smt-busy-rebalance-interval.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: sched domain: increase the SMT busy rebalance interval
From: "Siddha, Suresh B" <suresh.b.siddha@xxxxxxxxx>
With SMT, if the logical processor is busy, load balance happens for every
8msec(min)-16msec(max). There is no need to do this often, as this is just
for fairness(to maintain uniform runqueue lengths) and default time slice
anyhow is 100msec.
Appended patch increases this interval to 64msec(min)-128msec(max) when the
logical processor is busy.
Signed-off-by: Suresh Siddha <suresh.b.siddha@xxxxxxxxx>
Cc: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/linux/topology.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN include/linux/topology.h~sched-domain-increase-the-smt-busy-rebalance-interval include/linux/topology.h
--- a/include/linux/topology.h~sched-domain-increase-the-smt-busy-rebalance-interval
+++ a/include/linux/topology.h
@@ -93,7 +93,7 @@
.groups = NULL, \
.min_interval = 1, \
.max_interval = 2, \
- .busy_factor = 8, \
+ .busy_factor = 64, \
.imbalance_pct = 110, \
.cache_nice_tries = 0, \
.per_cpu_gain = 25, \
_
Patches currently in -mm which might be from suresh.b.siddha@xxxxxxxxx are
origin.patch
revert-i386-fix-the-verify_quirk_intel_irqbalance.patch
revert-x86_64-mm-add-genapic_force.patch
revert-x86_64-mm-fix-the-irqbalance-quirk-for-e7320-e7520-e7525.patch
genapic-optimize-fix-apic-mode-setup-2.patch
genapic-always-use-physical-delivery-mode-on-8-cpus.patch
genapic-remove-es7000-workaround.patch
genapic-remove-clustered-apic-mode.patch
genapic-default-to-physical-mode-on-hotplug-cpu-kernels.patch
optimize-calc_load.patch
mm-only-sched-add-a-few-scheduler-event-counters.patch
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