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  1. JDK
  2. JDK-8266490

Extend the OSContainer API to support the pids controller of cgroups

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    • Subcomponent:
    • Resolved In Build:
      b10
    • CPU:
      generic
    • OS:
      linux

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        Description

        Existing cgroup v1 and v2 metrics for Hotspot have been introduced with the container
        detection code. It is using os::Linux::print_container_info() which in turn uses OSContainer Linux-
        only API.
        Extend the OSContainer API in order to also support the pids controller of cgroups.

        There is a --pids-limit flag to docker/podman which seems to use the same cgroups interface files.
        systemd seems to use the same functionality to limit the number of tasks a user can start.


        More info
        https://www.freedesktop.org/software/systemd/man/systemd.resource-control.html
        https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/pids.html
        https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#pid

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                Assignee:
                mbaesken Matthias Baesken
                Reporter:
                mbaesken Matthias Baesken
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