Messages in this thread | | | Date | Wed, 19 Mar 2008 04:49:53 +0100 | From | Ingo Molnar <> | Subject | [git pull] scheduler fixes |
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Linus, please pull the latest scheduler fixes git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel.git for-linus
[ Note: it touches net/core/sock.c to tweak two socket wakeups there. ]
this tree improves/fixes lat_ctx/lat_pipe/bw_pipe latency/performance on SMP systems:
.25-rc6 .25-rc6-sched/for-linus ------------------------------------------------------------- lat_ctx 2 : 1.93 us 0.69 us lat_pipe : 4.96 us 2.49 us bw_pipe : 2841.11 MB/sec 3436.61 MB/sec
it also improves the ramp-up phase of sysbench on a quad:
.25-rc6 .25-rc6-sched/for-linus ------------------------------------------------------------- 1: ( 836.64 per sec.) (1216.90 per sec.) 2: (2407.02 per sec.) (2361.12 per sec.) 4: (4468.59 per sec.) (4510.14 per sec.)
( similar improvements were measured on an 8-way and on various dual boxes as well - a 16way box was largely unchanged. )
these changes also improved some other workloads as well: mysql, apache and others - and it did not impact some others that we handled well before (such as kbuild, hackbench and others).
Thanks,
Ingo
------------------> Ingo Molnar (8): sched: clean up wakeup balancing, move wake_affine() sched: clean up wakeup balancing, rename variables sched: clean up wakeup balancing, code flow sched, net: socket wakeups are sync sched: improve affine wakeups sched: wakeup-buddy tasks are cache-hot sched: retune wake granularity sched: tune multi-core idle balancing
include/linux/sched.h | 3 + include/linux/topology.h | 1 - kernel/sched.c | 11 +++- kernel/sched_debug.c | 1 + kernel/sched_fair.c | 191 ++++++++++++++++++++++++++++------------------ net/core/sock.c | 4 +- 6 files changed, 134 insertions(+), 77 deletions(-)
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