Performance Engineering on Hard Mode with Andrew Hunter

Andrew Hunter makes code really, really fast. Before joining Jane Street, he worked for seven years at Google on multithreaded architecture, and was a tech lead for tcmalloc, Google’s world-class scalable malloc implementation. In this episode, Andrew and Ron discuss how, paradoxically, it can be easier to optimize systems at hyperscale because of the impact that even miniscule changes can have. Finding performance wins in trading systems—which operate at a smaller scale, but which have bursty, low-latency workloads—is often trickier. Andrew explains how he approaches the problem, including his favorite profiling techniques and tools for visualizing traces; the unique challenges of optimizing OCaml versus C++; and when you should and shouldn’t care about nanoseconds. They also touch on the joys of musical theater, and how to pass an interview when you’re sleep-deprived. You can find the transcript for this episode on our website . Some links to topics that came up in the discussion: “Profiling a warehouse-scale computer” Magic-trace OODA loop

You can listen to Performance Engineering on Hard Mode with Andrew Hunter online on Radio and Podcast. Open the player on this page to stream the available audio.

Performance Engineering on Hard Mode with Andrew Hunter is an episode from Signals and Threads by Jane Street.

This episode is 00:55:34 long.

This episode was published on Nov 28, 2023.

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