Messages in this thread | | | Date | Wed, 6 Apr 2022 10:47:53 +0800 | Subject | Re: [RFC PATCH v2 0/4] Introduce group balancer | From | Tianchen Ding <> |
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Ping~ Any idea for this patchset? :-)
On 2022/3/8 17:26, Tianchen Ding wrote: > Modern platform are growing fast on CPU numbers. To achieve better > utility of CPU resource, multiple apps are starting to sharing the CPUs. > > What we need is a way to ease confliction in share mode, > make groups as exclusive as possible, to gain both performance > and resource efficiency. > > The main idea of group balancer is to fulfill this requirement > by balancing groups of tasks among groups of CPUs, consider this > as a dynamic demi-exclusive mode. Task trigger work to settle it's > group into a proper partition (minimum predicted load), then try > migrate itself into it. To gradually settle groups into the most > exclusively partition. > > GB can be seen as an optimize policy based on load balance, > it obeys the main idea of load balance and makes adjustment > based on that. > > Our test on ARM64 platform with 128 CPUs shows that, > throughput of sysbench memory is improved about 25%, > and redis-benchmark is improved up to about 10%. > > See each patch for detail: > The 1st patch introduces infrastructure. > The 2nd patch introduces detail about partition info. > The 3rd patch is the main part of group balancer. > The 4th patch is about stats. > > v2: > Put partition info and period settings to cpuset subsys of cgroup_v2. > > v1: https://lore.kernel.org/all/98f41efd-74b2-198a-839c-51b785b748a6@linux.alibaba.com/ > > Michael Wang (1): > sched: Introduce group balancer > > Tianchen Ding (3): > sched, cpuset: Introduce infrastructure of group balancer > cpuset: Handle input of partition info for group balancer > cpuset, gb: Add stat for group balancer > > include/linux/cpuset.h | 5 + > include/linux/sched.h | 5 + > include/linux/sched/gb.h | 70 ++++++ > init/Kconfig | 12 + > kernel/cgroup/cpuset.c | 405 +++++++++++++++++++++++++++++++- > kernel/sched/Makefile | 1 + > kernel/sched/core.c | 5 + > kernel/sched/debug.c | 10 +- > kernel/sched/fair.c | 26 ++- > kernel/sched/gb.c | 487 +++++++++++++++++++++++++++++++++++++++ > kernel/sched/sched.h | 14 ++ > 11 files changed, 1037 insertions(+), 3 deletions(-) > create mode 100644 include/linux/sched/gb.h > create mode 100644 kernel/sched/gb.c >
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