SESSION + Live Q&A

Applying Concurrency Cookbook Recipes to SPEC JBB

Our overarching goal was to understand, quantify and highlight the consequences of certain choices of fences when compiling Java constructs down to hardware platforms such as ARM, IBM Power or Intel x86. We used Doug Lea's cookbook as a compilation guide, and SPEC JBB as our reference benchmark. More precisely, we followed the recipes appearing in the cookbook and applied them to SPEC JBB. This talk reports our findings, both from a soundness and efficiency point of view. We hope that the attendees of this talk will benefit from:

  1. an introduction to relaxed memory consistency as implemented in Java, which in turn motivates the need for memory barriers in concurrent code;
  2. a presentation of our performance analysis methodology;
  3. a detailed report on the performance implications of memory barriers, specifically:
  • on the performance measurement front: we use Java Micro-benchmarking Harness (JMH) to understand and showcase these performance implications better;
  • on the performance analysis front: we look at profiling snippets to be able to highlight hot code;
  • on the performance study front: we examine the implications of the use of memory barriers on core and SMT scaling.

Speaker

Monica Beckwith

Java Champion, First Lego League Coach, passionate about JVM Performance @Microsoft

Java Champion Monica Beckwith is considered a subject matter expert, has several published articles and gets regular invitations to give talks on JVM/JIT Compilation/Garbage Collection (GC). She is also a JavaOne Rock Star.Monica has made various performance contributions to the Java HotSpot VM...

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Continuous Profiling in Production: What, Why and How

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Performance Engineer - Consultant @DataStax & Chief Performance Consultant at TTNR Labs

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Peddle the Pedal to the Metal

Tips and techniques for writing highly efficient and scalable software drawn from decades of experience. You'll see that the guiding principle is a simple one, and can be applied nearly everywhere. The talk is focused on programming in C.

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PANEL DISCUSSION + Live Q&A Open Space

Panel: Performance - What's Next?

A lot of the techniques and approaches that we use for developing and improving software performance are tried and tested rather than innovative. But what does the future hold - will be doing the same things in 5, 10 or 20 years time or will software evolve?

Richard Warburton

Top Performance-Minded Java Engineer & cofounder of Opsian.com

Sadiq Jaffer

Director at Opsian

Howard Chu

Systems Level Developer & CTO @SymasCorp

Nitsan Wakart

Performance Engineer - Consultant @DataStax & Chief Performance Consultant at TTNR Labs

Martin Thompson

High Performance & Low Latency Specialist

Monica Beckwith

Java Champion, First Lego League Coach, passionate about JVM Performance @Microsoft

View full Schedule