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Thursday, October 24 • 10:40am - 11:30am
A Portable Clock Cycle Based Performance Measurement System - Michael Christofferson, Enea

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In real-time development, it is often the case that direct end-to-end time measurements and statistics are needed to determine program, design, or specification correctness, and often involves both kernel events and user space or application events. This presentation describes a portable set of open source tools, API’s, and programs for implementation of timing measures between multiple software events based on clock cycles. A CPU abstraction layer is provided for portability to any CPU architecture, and can be used in both kernel and user space, and across events in both spaces. Statistics are collected in the kernel by migrating a RRD database implementation as a statistical kernel module. This in itself can be a nice addition to the kernel. Information about kernel data will be exposed to the user over procfs or sysfs or via a socket or device in /dev/ directory. Information about processes profiled in user space will be executed by means of a dedicated monitoring daemon. The tools provide an easy method for code instrumentation and extraction of results that will benefit most in the real-time Linux development community.

Speakers
avatar for Michael Christofferson, Enea

Michael Christofferson, Enea

Product Marketing Director, Enea
Previous speaking: 2014 - 1) ELC San Jose, April 29-May 2, 2014, "User Space Drivers in Linux – Pros, Cons, and Implementation Issues. In 2013 - 1) Linux Embedded Systems Conference San Franciso, Feb 20-22 2013 on the "Yocto Meta-Virtualization Project", 2) LinuxCon/Cloud Open North America, Sept 2014, on "A Platform Independent, Clock Cycle Based Performance Measurement System”, 3) The Embedded World Conference, Europe/Edinburgh, Oct... Read More →


Thursday October 24, 2013 10:40am - 11:30am
Fintry

Attendees (25)