Profilers are lying hobbitses

Everybody hates a lying hobbit... But are profilers broken or are we naive in our expectations?

In this talk we will re-visit some broken assumptions and try and get to grips with the limitations of our tools. We'll cover:

Fiction of instruction level profiling
Skid & PEBS
Safepoint bias, theory and practice
JMC blindspots, theory and practice
Honest-Profiler vs. Async-Profiler
Profilers vs. Inlining and Inlining vs. Programmer
Profilers vs. Multi-threading

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Nitsan Wakart, TTNR Labs

nitsanw

A coder with a pedantic passion for performance. His work has spanned army intelligence systems, dot.com era startups, financial institutions and innovative product companies. Also a blogger and active Open Source developer (importantly JCTools but a modest contributor to RxJava/Netty/Akka and others as well). When not plotting world domination, Nitsan enjoys pinnacoladas and getting caught in the rain.

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