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  1. Core Server
  2. SERVER-21691

Insert stalls during dirty writeback

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Details

    • Bug
    • Status: Closed
    • Blocker - P1
    • Resolution: Fixed
    • 3.2.0-rc4
    • 3.2.0-rc5
    • WiredTiger
    • Fully Compatible
    • ALL
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      Standalone mongodb instance, 24CPU, 32GB RAM
      benchRun 32 false true 100000
      (see attached script)

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      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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              michael.cahill@mongodb.com Michael Cahill
              martin.bligh Martin Bligh
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              Dates

                Created:
                Updated:
                Resolved: