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August 19-21 - Co-Located Events
August 21-23 - Conference
Hilton San Diego Bayfront - San Diego, CA
More information for Open Source Summit + Embedded Linux Conference North America 2019
Wednesday, August 21 • 2:25pm - 3:00pm
Cyclic Tests Unleashed: Large-Scale RT Analysis with Jitterdebugger - Wolfgang Mauerer, Siemens AG

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Jitterdebugger is a new tool for testing the preempt_rt real-time extensions for the Linux kernel. While the basic principles for this endeavor (run a cyclic task on one or more CPUs, and store the measured latencies) seem very straightforward at a first glance, the devil is in the details -- in particular, if evaluations beyond computing simple descriptive results should take place, and if machines and systems are subjected to systematic testing over long periods of time.

The talk starts with an introduction to architecture and usage of the jitterdebugger tool, and will (of course) also address the question of how it differs from the cyclictest tool suite. We will then discuss archival strategies for keeping recorded data reproducible in the long run (a non-trivial problem!), and discuss several types of statistical evaluation that are made possible by jitterdebugger's new capabilities.

Speakers
avatar for Wolfgang Mauerer

Wolfgang Mauerer

Senior Key Expert/Professor, OTH Regensburg / Siemens AG
Wolfgang Mauerer is a professor of theoretical computer science at the Technical University Regensburg, and a senior key expert at Siemens Corporate Research, Competence Centre Embedded Linux. He serves on the technical steering committee of the Linux Foundation's Civil Infrastructure... Read More →


Wednesday August 21, 2019 2:25pm - 3:00pm
Indigo BF
  • Session Recorded Yes