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How Much Is Tracing? Measuring the Overhead Caused by the Tracing Infrastructure

Offered By: Linux Foundation via YouTube

Tags

Real-Time Systems Courses Performance Measurement Courses eBPF Courses Ftrace Courses

Course Description

Overview

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Explore the impact of tracing facilities on real-time systems in this 42-minute conference talk by Andreas Klinger. Delve into an investigation of how tracing affects target systems, focusing on the reliability of absolute timing values in ftrace outputs. Learn about the innovative measurement approach using a custom kernel driver and oscilloscope monitoring. Compare various kernel configurations, including different tracing setups, kernel preemption options, and the real-time preemption patch. Examine the overhead calculations for tracing events, kernel probes, user probes, trace markers, and eBPF events. Gain valuable insights into the trade-offs between tracing capabilities and system performance in real-time environments.

Syllabus

How Much Is Tracing? Measuring the Overhead Caused by the Tracing Infrastructure - Andreas Klinger


Taught by

Linux Foundation

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