This video was recorded at Code BEAM V 2020 - codesync.global/conferences/code-beam-sto/ Flamegraph and heatmap profiling | Edmond Begumisa & Roshan Giri ABSTRACT TALK LEVEL: INTERMEDIATE / ADVANCED Profiling Erlang systems is tricky due to their concurrent nature - many things going on at the same time. We introduce a new open-source low-overhead profiler which samples callstacks and graphically categorises them by process status, reductions, memory and message queue length over time making it easy to identify code where time and memory is being spent. We illustrate how we used this tool to identify both sequential and concurrency bottlenecks in our Erlang Healthcare HL7 message processing system. THIS TALK IN THREE WORDS Profiler Heatmaps Flamegraphs OBJECTIVES Show how to effectively use sub-second heatmaps and process status flamegraphs to isolate performance issues during both development and production. Illustrate how focusing on locating and eliminating concurrency bottlenecks tends to reap bigger rewards than optimising sequential code. Impart why it's critical to profile Erlang systems at different levels of load. TARGET AUDIENCE This talk is suitable for intermediate and advanced Erlang developers who are responsible for identifying performance issues and locating their causes. • Slides: https://drive.google.com/file/d/1Ou8YwtTsOttmEJQcQhYoTYsqBct03X2T/view?usp=sharing • Follow us on social: Twitter: https://twitter.com/CodeBEAMio LinkedIn: https://www.linkedin.com/company/27159258 • Looking for a unique learning experience? Attend the next Code Sync conference near you! See what's coming up at: https://codesync.global • SUBSCRIBE TO OUR CHANNEL https://www.youtube.com/channel/UC47eUBNO8KBH_V8AfowOWOw See what's coming up at: https://codesync.global • SUBSCRIBE TO OUR CHANNEL https://www.youtube.com/channel/UC47eUBNO8KBH_V8AfowOWOwThis video was recorded at Code BEAM V 2020 - codesync.global/conferences/code-beam-sto/