Edinburgh, Scotland, UK
October 21 & October 25 | Co-Located Events, Tutorials, & Workshops
October 22-24 | Conference
Find out more information for Open Source Summit + Embedded Linux Conference & OpenIoT Summit Europe 2018

Please note that you can view and download presentations on the Open Source Summit and Embedded Linux Conference + OpenIoT Summit slides pages. 
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Monday, October 22 • 16:15 - 16:55
Spectre and Meltdown vs. Real-Time: How Much do Mitigations Cost? - Ralf Ramsauer & Wolfgang Mauerer, OTH Regensburg; Jan Kiszka, Siemens AG

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2018 had a bumpy landing with the disclosure of hardware vulnerabilities in microprocessors. With Spectre and Meltdown leading the way, they enabled attackers to read private data from kernel and user space. Since then, several other hardware bugs were revealed.

Lower level system software such as operating systems or hypervisors needs to implement countermeasures to the vulnerabilities. The fixes come at a cost, particularly in execution time. Embedded real-time environments have a strong focus on low latency and determinism and may be affected by those fixes.

What’s the mitigation cost and impact on typical real-time applications? To answer these question, we use benchmarks as well as a set of microbenchmarks to quantify the consequences of the mitigations. Our targets are real-time operating systems, such as the Preempt-RT patch for Linux as well as embedded real-time hypervisors.


Jan Kiszka

Principle Key Expert Engineer, Siemens Technology
Jan Kiszka is working as consultant, open source evangelist and Principle Key Expert Engineer in the Competence Center for Embedded Linux at Siemens Technology. He is supporting Siemens division and subsidiaries with adapting, enhancing or strategically driving open source as platform... Read More →
avatar for Ralf Ramsauer

Ralf Ramsauer

Research Fellow, OTH Regensburg
Ralf Ramsauer is a PhD student at the University of Applied Sciences Regensburg where he works in a joint project together with Siemens Corporate Competence Center Embedded Linux. His academic research interests focus on finding successful long term maintenance strategies for Open... Read More →

Monday October 22, 2018 16:15 - 16:55 BST
Lennox 1, Level -2