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  1. Red Hat Process Automation Manager
  2. RHPAM-4777

Dynamic resources script is reading wrong container sys files on cgroupsv2

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    • 2023 Week 36-38 (from Sep 4)

      Following test failures on ARM architecture for the dynamic resources (see logs attached), I investigated why and noticed that the read values from the script are not existing and should be changed.

      Indeed, container-limits is reading values from `/sys/fs/cgroup/cpu` and `/sys/fs/cgroup/memory`, but looking at available files in the container, those are not existing anymore ...

      x86

      $ ls /sys/fs/cgroup/
      cgroup.controllers    cgroup.stat        cpu.stat           hugetlb.1GB.current     hugetlb.2MB.events       io.max       memory.events.local    memory.pressure       memory.zswap.max    rdma.current
      cgroup.events        cgroup.subtree_control    cpu.weight           hugetlb.1GB.events     hugetlb.2MB.events.local  io.pressure       memory.high        memory.reclaim          misc.current    rdma.max
      cgroup.freeze        cgroup.threads        cpu.weight.nice        hugetlb.1GB.events.local  hugetlb.2MB.max       io.prio.class   memory.low        memory.stat          misc.events
      cgroup.kill        cgroup.type        cpuset.cpus           hugetlb.1GB.max         hugetlb.2MB.numa_stat       io.stat       memory.max        memory.swap.current   misc.max
      cgroup.max.depth    cpu.idle        cpuset.cpus.effective  hugetlb.1GB.numa_stat     hugetlb.2MB.rsvd.current  io.weight       memory.min        memory.swap.events    pids.current
      cgroup.max.descendants    cpu.max            cpuset.cpus.partition  hugetlb.1GB.rsvd.current  hugetlb.2MB.rsvd.max       irq.pressure    memory.numa_stat    memory.swap.high      pids.events
      cgroup.pressure        cpu.max.burst        cpuset.mems           hugetlb.1GB.rsvd.max     io.bfq.weight           memory.current  memory.oom.group    memory.swap.max       pids.max
      cgroup.procs        cpu.pressure        cpuset.mems.effective  hugetlb.2MB.current     io.latency           memory.events   memory.peak        memory.zswap.current  pids.pea

      arm64

      $ ls /sys/fs/cgroup/
      cgroup.controllers    cgroup.threads     cpuset.cpus           hugetlb.1GB.numa_stat     hugetlb.2MB.rsvd.max    hugetlb.64KB.events       io.pressure        memory.numa_stat     memory.zswap.current
      cgroup.events        cgroup.type     cpuset.cpus.effective       hugetlb.1GB.rsvd.current  hugetlb.32MB.current    hugetlb.64KB.events.local  io.stat        memory.oom.group     memory.zswap.max
      cgroup.freeze        cpu.idle     cpuset.cpus.partition       hugetlb.1GB.rsvd.max      hugetlb.32MB.events    hugetlb.64KB.max       memory.current    memory.pressure      misc.current
      cgroup.kill        cpu.max         cpuset.mems           hugetlb.2MB.current         hugetlb.32MB.events.local    hugetlb.64KB.numa_stat       memory.events    memory.reclaim         misc.max
      cgroup.max.depth    cpu.max.burst     cpuset.mems.effective       hugetlb.2MB.events         hugetlb.32MB.max        hugetlb.64KB.rsvd.current  memory.events.local    memory.stat         pids.current
      cgroup.max.descendants    cpu.pressure     hugetlb.1GB.current       hugetlb.2MB.events.local  hugetlb.32MB.numa_stat    hugetlb.64KB.rsvd.max       memory.high        memory.swap.current  pids.events
      cgroup.procs        cpu.stat     hugetlb.1GB.events       hugetlb.2MB.max         hugetlb.32MB.rsvd.current    io.bfq.weight           memory.low        memory.swap.events   pids.max
      cgroup.stat        cpu.weight     hugetlb.1GB.events.local  hugetlb.2MB.numa_stat     hugetlb.32MB.rsvd.max    io.latency           memory.max        memory.swap.high     rdma.current
      cgroup.subtree_control    cpu.weight.nice  hugetlb.1GB.max       hugetlb.2MB.rsvd.current  hugetlb.64KB.current    io.max               memory.min        memory.swap.max      rdma.max

            rhn-support-fspolti Filippe Spolti
            tradisso@redhat.com Tristan Radisson
            Jakub Schwan Jakub Schwan
            Jakub Schwan Jakub Schwan
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              Created:
              Updated:
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