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  1. Lustre
  2. LU-14040 Improve LNet Statistics
  3. LU-14041

LNet: CPT Statistics

Details

    • Technical task
    • Resolution: Unresolved
    • Minor
    • None
    • None
    • None
    • 9223372036854775807

    Description

      Whenever a CPT lock is taken and some list is traversed, keep the max time the CPT lock is taken. Soft lockups have been observed on several sites. It took a long investigation to understand the reason for the lockups. Keeping statistics on the max length of time a CPT remains locked will allow us to identify these issues quicker.

      Track the load on the different CPTs. This will improve our ability to fine tune CPT configuration.

      Attachments

        Activity

          [LU-14041] LNet: CPT Statistics
          gerrit Gerrit Updater added a comment -

          Cyril Bordage (cbordage@whamcloud.com) uploaded a new patch: https://review.whamcloud.com/41747
          Subject: LU-14041 lnet: display CPT timing from lnetctl
          Project: fs/lustre-release
          Branch: master
          Current Patch Set: 1
          Commit: ae796c75bd118c893cd920cbc211df2240c8612b

          gerrit Gerrit Updater added a comment - Cyril Bordage (cbordage@whamcloud.com) uploaded a new patch: https://review.whamcloud.com/41747 Subject: LU-14041 lnet: display CPT timing from lnetctl Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: ae796c75bd118c893cd920cbc211df2240c8612b
          gerrit Gerrit Updater added a comment -

          Cyril Bordage (cbordage@whamcloud.com) uploaded a new patch: https://review.whamcloud.com/41746
          Subject: LU-14041 lnet: add max CPT lock duration
          Project: fs/lustre-release
          Branch: master
          Current Patch Set: 1
          Commit: 76032155795515e8e07a6ca9668d8ccea52beff6

          gerrit Gerrit Updater added a comment - Cyril Bordage (cbordage@whamcloud.com) uploaded a new patch: https://review.whamcloud.com/41746 Subject: LU-14041 lnet: add max CPT lock duration Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: 76032155795515e8e07a6ca9668d8ccea52beff6
          gerrit Gerrit Updater added a comment - - edited

          [DELETED]

          gerrit Gerrit Updater added a comment - - edited [DELETED]

          People

            cbordage Cyril Bordage
            ashehata Amir Shehata (Inactive)
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            Dates

              Created:
              Updated: