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  1. Core Server
  2. SERVER-21691

Insert stalls during dirty writeback

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Blocker - P1
    • Resolution: Fixed
    • Affects Version/s: 3.2.0-rc4
    • Fix Version/s: 3.2.0-rc5
    • Component/s: WiredTiger
    • Labels:
    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL
    • Steps To Reproduce:
      Hide

      Standalone mongodb instance, 24CPU, 32GB RAM
      benchRun 32 false true 100000
      (see attached script)

      Show
      Standalone mongodb instance, 24CPU, 32GB RAM benchRun 32 false true 100000 (see attached script)

      Description

      With the resolution of SERVER-21652, things are definitely much improved. However, I still see some heavy stalls during what appears to be dirty writeback. Maybe checkpoints, but not time-aligned as I'd expect?

        Attachments

        1. benchRun
          2 kB
        2. metrics.2015-11-30T14-44-15Z-00000
          120 kB
        3. stalls.png
          stalls.png
          154 kB
        4. stalls.png
          stalls.png
          308 kB

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                Dates

                • Created:
                  Updated:
                  Resolved: