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Commit a27a91a5 authored by Wei Wang's avatar Wei Wang
Browse files

init.rc: remove bg_non_interactive cgroup 

We have seen cases when threads in this cgroup not scheduled for more than
a few seconds in heavy workload situation and causing device freeze.
In Linux, multiple threads placed in ROOT cgroup cause the CPU resource to
be split per thread, rather than per group.
Currently we have many threads in ROOT cgroup, which makes threads in
bg_non_interactive cgroup to have "tiny" CPU resource other than 5%
quota defined.

Bug: 34193533
Test: on marlin
Change-Id: I7721f6196560fbedf6265e8b6db130cec9edefd7
parent 450c4405

rootdir/init.rc

+0 −9
Original line number Diff line number Diff line
@@ -150,15 +150,6 @@ on init 
    write /dev/cpuctl/cpu.rt_period_us 1000000

    write /dev/cpuctl/cpu.rt_runtime_us 950000



    mkdir /dev/cpuctl/bg_non_interactive

    chown system system /dev/cpuctl/bg_non_interactive/tasks

    chmod 0666 /dev/cpuctl/bg_non_interactive/tasks

    # 5.0 %

    write /dev/cpuctl/bg_non_interactive/cpu.shares 52

    write /dev/cpuctl/bg_non_interactive/cpu.rt_period_us 1000000

    # active FIFO threads will never be in BG

    write /dev/cpuctl/bg_non_interactive/cpu.rt_runtime_us 10000



    # sets up initial cpusets for ActivityManager

    mkdir /dev/cpuset

    mount cpuset none /dev/cpuset