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  1. OpenShift Bugs
  2. OCPBUGS-35357

The must-gather took too long after upgrading to OpenShift 4.14

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    • 4.16.z
    • 4.14
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      Previously, the `must-gather` process ran too long while collecting CPU-related performance data for nodes due to collecting the data sequentially for each node.
      Now, the node data is collected in parallel, which significantly shortens the `must-gather` data collection time.
      Show
      Previously, the `must-gather` process ran too long while collecting CPU-related performance data for nodes due to collecting the data sequentially for each node. Now, the node data is collected in parallel, which significantly shortens the `must-gather` data collection time.
    • Bug Fix
    • Done
    • 2024-06-19: PR labels pending for 4.16, ready otherwise

      This is a clone of issue OCPBUGS-34360. The following is the description of the original issue:
      —
      Description of problem:

          After upgrading to OpenShift 4.14, the must-gather took much longer than before.

      Version-Release number of selected component (if applicable):

          4.14

      How reproducible:

          Always

      Steps to Reproduce:

          1. Run oc adm must-gather
    2. Wait for it to complete
    3.

      Actual results:

          For a cluster with around 50 nodes, the must-gather took about 30 minutes.

      Expected results:

         For a cluster with around 50 nodes, the must-gather can finish in about 10 minutes.

      Additional info:

          It seems the gather_ppc collection script is related here.

https://github.com/openshift/must-gather/blob/release-4.14/collection-scripts/gather_ppc

              msivak@redhat.com Martin Sivak
              openshift-crt-jira-prow OpenShift Prow Bot
              ying zhou ying zhou
              Alexandra Molnar Alexandra Molnar
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                Created:
                Updated:
                Resolved: