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Very cool project.

Curious whether the biggest value has been performance debugging itself or helping developers understand system behavior they otherwise wouldn't have visibility into.

Sometimes the observability layer ends up being more valuable than the optimization layer.

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Thanks! I think most performance debugging happens during development, what we're bringing to the table is exposure of system behavior in production which often diverges because of changes in the shape of workloads from dev, which are often simplistic and synthetic. So I'd say its late-stage performance debugging and production observability combined that makes this useful.

Stay tuned for a follow on post where we show how we used this to optimize an FSST decompression kernel for vortex (https://github.com/vortex-data/vortex).

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