Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-44187

High I/O load in Secondary node

    XMLWordPrintable

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Works as Designed
    • Affects Version/s: 3.2.10
    • Fix Version/s: None
    • Component/s: WiredTiger
    • Labels:
      None
    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL
    • Steps To Reproduce:
      Hide

      (1)Keep the database operation scenario unchanged

      (2)Watch the primary iops

      (3)Watch the secondary iops
      Observing the main iops situation

      Show
      (1)Keep the database operation scenario unchanged (2)Watch the primary iops (3)Watch the secondary iops Observing the main iops situation

      Description

      In the scenario of continuous insertion and update, the role of mongodb is changed on the same host, and iostat is used to monitor the performance of io. It is found that the value of %util is much lower than that of seconary while in role primary.

        Attachments

        1. primary iops.jpg
          primary iops.jpg
          199 kB
        2. primary mongostat.jpg
          primary mongostat.jpg
          254 kB
        3. secondary iops.jpg
          secondary iops.jpg
          157 kB
        4. secondary mongostat.jpg
          secondary mongostat.jpg
          250 kB

          Activity

            People

            Assignee:
            dmitry.agranat Dmitry Agranat
            Reporter:
            879811746@qq.com miao yimin
            Participants:
            Votes:
            0 Vote for this issue
            Watchers:
            5 Start watching this issue

              Dates

              Created:
              Updated:
              Resolved: