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Wednesday, April 17 • 10:00am - 11:00am
The Linux Perf Tool: New Features - Jiri Olsa & Arnaldo Carvalho de Melo, Red Hat

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This presentation will give an overview and current development stateof several new perf features, like:

  • Perf diff enhancements: describing newly added computation data comparison methods    ratio, delta and weighted diff plus introducing multiple perf data file comparison
  • Group leader sampling: Describing new way of getting group's samples
  • Callchains DWARF unwind: Moving towards libdwarf
  • Default precise event setup: Forcing precise event profiling whenever possible
  • Interval stat plotting: The stat command can now print event deltas at regular    time interval.

We will describe above features in detail and provide practical usage examples. In addition, this session will cover some 'want to have' features for the future, like: Event toggling event, Non-architectural events support the trace event library integration.


Speakers
avatar for Arnaldo Carvalho de Melo

Arnaldo Carvalho de Melo

Principal Software Engineer, Red Hat
Maintained IPX, LLC, Appletalk protocols. Refactored the TCP/IP stack to reuse non TCP specific parts. Implemented the Linux DCCP stack. Created pahole, a tool to help in optimizing data structures, used in Linux, glibc, KDE, xine & others. Maintainer of
avatar for Jiri Olsa

Jiri Olsa

Software Engineer, Red Hat
Jiri works for RedHat full time on Linux as kernel generalist engineer in Brno office, Czech Republicech Republic. He currently divides his work time between upstream perf work and maintaining RHEL perf.


Wednesday April 17, 2013 10:00am - 11:00am
Cyril Magnin I

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