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  1. JDK
  2. JDK-8266490

Extend the OSContainer API to support the pids controller of cgroups

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    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P3
    • Resolution: Fixed
    • Affects Version/s: 17
    • Fix Version/s: 18
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
    • Resolved In Build:
      b10
    • CPU:
      generic
    • OS:
      linux

      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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                Created:
                Updated:
                Resolved: