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Saturday, October 21, 2017 • 14:30 - 15:20
Tracing has been an important part of development of Real Time for Linux. Ftrace, the official tracer inside the Linux kernel came from the PREEMPT_RT patch. A lot of advancements in tracing have happened since ftrace was first introduced in 2.6.30 back in 2009, but more can be accomplished. This session will be more about future development than discussing what it currently does. Some near term development include Tom Zanussi's histogram work. Adding tracepoints to irq/preempt disabling, perhaps even make irq/preempt latency tracing near-zero overhead to keep enabled in production systems. This will be discussion oriented, so bring with you what you want to see happen in ftrace, and ways it can improve.
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