On 2020/11/13 17:22, Ning, Hongyu wrote: > On 2020/11/7 4:55, Joel Fernandes wrote: >> All, >> >> I am getting ready to send the next v9 series based on tip/master >> branch. Could you please give the below tree a try and report any results in >> your testing? >> git tree: >> https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git (branch >> coresched) >> git log: >> https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git/log/?h=coresched >> >> The major changes in this series are the improvements: >> (1) >> "sched: Make snapshotting of min_vruntime more CGroup-friendly" >> https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git/commit/?h=coresched-v9-for-test&id=9a20a6652b3c50fd51faa829f7947004239a04eb >> >> (2) >> "sched: Simplify the core pick loop for optimized case" >> https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git/commit/?h=coresched-v9-for-test&id=0370117b4fd418cdaaa6b1489bfc14f305691152 >> >> And a bug fix: >> (1) >> "sched: Enqueue task into core queue only after vruntime is updated" >> https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git/commit/?h=coresched-v9-for-test&id=401dad5536e7e05d1299d0864e6fc5072029f492 >> >> There are also 2 more bug fixes that I squashed-in related to kernel >> protection and a crash seen on the tip/master branch. >> >> Hoping to send the series next week out to the list. >> >> Have a great weekend, and Thanks! >> >> - Joel >> >> >> On Mon, Oct 19, 2020 at 09:43:10PM -0400, Joel Fernandes (Google) wrote: > > Adding 4 workloads test results for core scheduling v9 candidate: > > - kernel under test: > -- coresched community v9 candidate from > https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git (branch > coresched) > -- latest commit: 2e8591a330ff (HEAD -> coresched, origin/coresched) > NEW: sched: Add a coresched command line option > -- coresched=on kernel parameter applied > - workloads: > -- A. sysbench cpu (192 threads) + sysbench cpu (192 threads) > -- B. sysbench cpu (192 threads) + sysbench mysql (192 threads, mysqld > forced into the same cgroup) > -- C. uperf netperf.xml (192 threads over TCP or UDP protocol > separately) > -- D. will-it-scale context_switch via pipe (192 threads) > - test machine setup: > CPU(s): 192 > On-line CPU(s) list: 0-191 > Thread(s) per core: 2 > Core(s) per socket: 48 > Socket(s): 2 > NUMA node(s): 4 > - test results, no obvious performance drop compared to community v8 build: > -- workload A: > > +----------------------+------+----------------------+------------------------+ > | | ** | sysbench cpu * 192 | sysbench cpu * > 192 | > > +======================+======+======================+========================+ > | cgroup | ** | cg_sysbench_cpu_0 | > cg_sysbench_cpu_1 | > > +----------------------+------+----------------------+------------------------+ > | record_item | ** | Tput_avg (events/s) | Tput_avg > (events/s) | > > +----------------------+------+----------------------+------------------------+ > | coresched_normalized | ** | 0.98 | 1.01 > | > > +----------------------+------+----------------------+------------------------+ > | default_normalized | ** | 1 | 1 > | > > +----------------------+------+----------------------+------------------------+ > | smtoff_normalized | ** | 0.59 | 0.6 > | > > +----------------------+------+----------------------+------------------------+ > > -- workload B: > > +----------------------+------+----------------------+------------------------+ > | | ** | sysbench cpu * 192 | sysbench mysql * > 192 | > > +======================+======+======================+========================+ > | cgroup | ** | cg_sysbench_cpu_0 | > cg_sysbench_mysql_0 | > > +----------------------+------+----------------------+------------------------+ > | record_item | ** | Tput_avg (events/s) | Tput_avg > (events/s) | > > +----------------------+------+----------------------+------------------------+ > | coresched_normalized | ** | 1.02 | 0.78 > | > > +----------------------+------+----------------------+------------------------+ > | default_normalized | ** | 1 | 1 > | > > +----------------------+------+----------------------+------------------------+ > | smtoff_normalized | ** | 0.59 | 0.75 > | > > +----------------------+------+----------------------+------------------------+ > > -- workload C: > > +----------------------+------+---------------------------+---------------------------+ > | | ** | uperf netperf TCP * 192 | uperf > netperf UDP * 192 | > > +======================+======+===========================+===========================+ > | cgroup | ** | cg_uperf | cg_uperf > | > > +----------------------+------+---------------------------+---------------------------+ > | record_item | ** | Tput_avg (Gb/s) | Tput_avg > (Gb/s) | > > +----------------------+------+---------------------------+---------------------------+ > | coresched_normalized | ** | 0.65 | 0.67 > | > > +----------------------+------+---------------------------+---------------------------+ > | default_normalized | ** | 1 | 1 > | > > +----------------------+------+---------------------------+---------------------------+ > | smtoff_normalized | ** | 0.83 | 0.91 > | > > +----------------------+------+---------------------------+---------------------------+ > > -- workload D: > +----------------------+------+-------------------------------+ > | | ** | will-it-scale * 192 | > | | | (pipe based context_switch) | > +======================+======+===============================+ > | cgroup | ** | cg_will-it-scale | > +----------------------+------+-------------------------------+ > | record_item | ** | threads_avg | > +----------------------+------+-------------------------------+ > | coresched_normalized | ** | 0.29 | > +----------------------+------+-------------------------------+ > | default_normalized | ** | 1.00 | > +----------------------+------+-------------------------------+ > | smtoff_normalized | ** | 0.87 | > +----------------------+------+-------------------------------+ > > - notes on test results record_item: > * coresched_normalized: smton, cs enabled, test result normalized by > default value > * default_normalized: smton, cs disabled, test result normalized by > default value > * smtoff_normalized: smtoff, test result normalized by default value > > > Hongyu >
Add 2 more negative test case: - continuously toggle cpu.core_tag, during workload running with cs_on - continuously toggle smt setting via /sys/devices/system/cpu/smt/control, during workload running with cs_on no kernel panic or platform hang observed.
