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Last active November 21, 2018 00:59
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Troubleshooting Performance on Windows w/ Containers
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troubleshooting-performance-on-windows-with-containers.md

Observation

Approximately 10% increase in CPU usage when running containerized application vs running the application directly on the host

Troubleshooting

Tools & Setup:

  • Windows Performance Recorder: built-in tool to troubleshoot performance related issues on Windows.
  • Application with some CPU consumption (.exe)
  • Same application containerized
  • 2 Windows VM w/ same specs

What I Did

  • Gathered perf data from running app directly on host:

    1. Start trace on host: wpr -start cpu -filemode
    2. Start application (.exe)
    3. Wait 10 seconds before stopping the recorder: wpr -stop trace.etl

  • Gathered perf data from running containerized application:

    1. Start trace on host: wpr -start cpu -filemode
    2. Start application (docker run)
    3. Wait 10 seconds before stopping the recorder: wpr -stop trace.etl

Result:

Double click trace.etl to dig into source of increased CPU usage:

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