Messages in this thread | | | From | Vincent Guittot <> | Date | Mon, 10 May 2021 18:16:50 +0200 | Subject | Re: [PATCH 00/19] sched: Core Scheduling |
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Hi Peter,
On Thu, 22 Apr 2021 at 14:36, Peter Zijlstra <peterz@infradead.org> wrote: > > Hai, > > This is an agressive fold of all the core-scheduling work so far. I've stripped > a whole bunch of tags along the way (hopefully not too many, please yell if you > feel I made a mistake), including tested-by. Please retest. > > Changes since the last partial post is dropping all the cgroup stuff and > PR_SCHED_CORE_CLEAR as well as that exec() behaviour in order to later resolve > the cgroup issue. > > Since we're really rather late for the coming merge window, my plan was to > merge the lot right after the merge window. > > Again, please test.
I have run various tests with your sched/core-sched branch on my arm64 machine: 2 numa * 28 cores * SMT4
List of tests: perf sched pipe hackbench process and threads with 1,4,16,32,64,128,256 groups tbench with 1,4,16,32,64,128,256 groups Unixbench shell and exec reaim
core-sched was compiled but not used: CONFIG_SCHED_CORE=y
I haven't seen any regressions or problems; it's a mix of +/- 1-2%. I have only seen one significant improvement for hackbench -g 1 (+4.92%) that I don't really explain. Will dig a bit one this later
So Tested-by: Vincent Guittot <vincent.guitto@linaro.org>
> > These patches should shortly be available in my queue.git. > > --- > b/kernel/sched/core_sched.c | 229 ++++++ > b/tools/testing/selftests/sched/.gitignore | 1 > b/tools/testing/selftests/sched/Makefile | 14 > b/tools/testing/selftests/sched/config | 1 > b/tools/testing/selftests/sched/cs_prctl_test.c | 338 +++++++++ > include/linux/sched.h | 19 > include/uapi/linux/prctl.h | 8 > kernel/Kconfig.preempt | 6 > kernel/fork.c | 4 > kernel/sched/Makefile | 1 > kernel/sched/core.c | 858 ++++++++++++++++++++++-- > kernel/sched/cpuacct.c | 12 > kernel/sched/deadline.c | 38 - > kernel/sched/debug.c | 4 > kernel/sched/fair.c | 276 +++++-- > kernel/sched/idle.c | 13 > kernel/sched/pelt.h | 2 > kernel/sched/rt.c | 31 > kernel/sched/sched.h | 393 ++++++++-- > kernel/sched/stop_task.c | 14 > kernel/sched/topology.c | 4 > kernel/sys.c | 5 > tools/include/uapi/linux/prctl.h | 8 > 23 files changed, 2057 insertions(+), 222 deletions(-) >
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