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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Tuesday, October 23 • 09:50 - 10:30
Preempt-RT Latency Benchmarking of the Cortex-A53 Processor - Paul Thomas, AMSC

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ARMv8 processors are becoming more common in the industrial market. It is useful to understand how well these processors perform with Preempt-RT. AMSC looked at the CortexA53 utilized in the ZYNQ UlataScale+ processors form Xilinx. The Cortex-A53 is an ARMv8 processor with an 8-stage in-order pipeline. The performance was compared with a Cortex-A9, a 10+ stage out-of-order pipeline. Even with the difference in pipeline design in these two processors, it is an interesting comparison because it represents the evolution of Xilinx’s ZYNQ product line.

Three different latency tests were performed: standard cyclictest latency, external hardware interrupt latency (as utilized by the IIO subsystem) and Ethernet UDP latency. Analyzing the performance of a hardware interrupt can be tricky, the method of utilizing a timer with a capture function is detailed in the presentation.

avatar for Paul Thomas

Paul Thomas

Lead Embedded Software Engineer, AMSC
Paul Thomas is the Lead Embedded Software Engineer at AMSC. Paul has over 15 years of experience working with embedded Linux. He has designed complex systems built on embedded Linux such as: the tracking system for large solar dishes and cellular based IoT connectivity solutions... Read More →

Tuesday October 23, 2018 09:50 - 10:30 BST
Lennox 3, Level -2