This talk, "Performance Matters" by Emery Berger, is blowing my mind. https://www.youtube.com/watch?v=r-TLSBdHe1A
Summary: profilers from ~20 years ago (what I talked about when I was doing performance work back in the day) are no longer as useful. There is evidence that unpredictable things like memory layout can change performance by ~40%. Everything is async, concurrent these days, and profilers don't cope.
Shows newer methods and a new profiler, and gets awesome results.
@hergertme you'll enjoy this :)
The referenced paper, "Producing Wrong Data Without Doing Anything Obviously Wrong", seems pretty cool! - https://users.cs.northwestern.edu/~robby/courses/322-2013-spring/mytkowicz-wrong-data.pdf
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