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Tuesday, October 14 • 2:30pm - 3:20pm
Square Pegs in Round holes, or System Level Performance Data and perf - Pawel Moll, ARM

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The perf framework, as useful as it is, has been primarily designed with the processor executing code in mind and it fits this use case very well. Unfortunately in modern and complex systems, the overall performance more and more depends on the system level infrastructure, with memory system interfaces being the most important ones. As this kind of hardware usually comes with some kind of performance monitors, it can be more than useful to allow user to use them. Unfortunately the perf infrastructure is much less suitable for this, requiring some workarounds and simplifications. I will show what has been done so far, using "uncore" PMU drivers x86 and ARM "CCI" and "CCN" interconnects as example and discu
ss what could be done to improve the situation.

Speakers
avatar for Pawel Moll

Pawel Moll

Principal Engineer, ARM
I've worked with so called "embedded Linux" for more then ten years now, currently for ARM in Cambridge, UK as a Principal Engineer, with main focus on Linux developer tools, in all possible form and shape. My recent interest include performance analysis and optimisation. Every now and then I also act as a trainer on ARM software courses, write developer articles and give technical talks (including many LinuxCon Europe and ELC-E conferences).


Tuesday October 14, 2014 2:30pm - 3:20pm
Room 14