Hi, Peter How do you think about this version, does it looks fine to you? Regards, Michael Wang On 2019/11/13 上午11:43, 王贇 wrote: > Modern production environment could use hundreds of cgroup to control > the resources for different workloads, along with the complicated > resource binding. > > On NUMA platforms where we have multiple nodes, things become even more > complicated, we hope there are more local memory access to improve the > performance, and NUMA Balancing keep working hard to achieve that, > however, wrong memory policy or node binding could easily waste the > effort, result a lot of remote page accessing. > > We need to perceive such problems, then we got chance to fix it before > there are too much damages, however, there are no good approach yet to > help catch the mouse who introduced the remote access. > > This patch set is trying to fill in the missing pieces， by introduce > the per-cgroup NUMA locality/exectime statistics, and expose the per-task > page migration failure counter, with these statistics, we could achieve > the daily monitoring on NUMA efficiency, to give warning when things going > too wrong. > > Please check the third patch for more details. > > Thanks to Peter, Mel and Michal for the good advices :-) > > Michael Wang (3): > sched/numa: advanced per-cgroup numa statistic > sched/numa: expose per-task pages-migration-failure counter > sched/numa: documentation for per-cgroup numa stat > > Documentation/admin-guide/cg-numa-stat.rst | 161 ++++++++++++++++++++++++ > Documentation/admin-guide/kernel-parameters.txt | 4 + > Documentation/admin-guide/sysctl/kernel.rst | 9 ++ > include/linux/sched.h | 18 ++- > include/linux/sched/sysctl.h | 6 + > init/Kconfig | 9 ++ > kernel/sched/core.c | 91 ++++++++++++++ > kernel/sched/debug.c | 1 + > kernel/sched/fair.c | 33 +++++ > kernel/sched/sched.h | 17 +++ > kernel/sysctl.c | 11 ++ > 11 files changed, 359 insertions(+), 1 deletion(-) > create mode 100644 Documentation/admin-guide/cg-numa-stat.rst > >
