GH-123516: Improve JIT memory consumption by invalidating cold executors - #124443
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brandtbucher merged 79 commits intoSep 27, 2024
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GH-123516: Improve JIT memory consumption by invalidating cold executors#124443brandtbucher merged 79 commits into
brandtbucher merged 79 commits into
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savannahostrowski
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ericsnowcurrently and
markshannon
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September 24, 2024 16:40
brandtbucher
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This is a nice change, thanks!
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Include/internal/pycore_interp.h
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brandtbucher
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Sep 25, 2024
picnixz
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Python/optimizer.c
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This PR succeeds #123402 and reworks the approach to use the eval breaker for the invalidation call instead of executor creation or gc (thanks @markshannon!). In experimenting, I tried a couple of different thresholds of 10k, 100k, and 1 million runs. The benchmarks for 100k and 1 million were most promising. Here are some relevant stats for quick reference:
100k
- -2.4% memory
- Roughly the same performance-wise
1 million
After chatting with @brandtbucher, I've opted to open this PR with the 100k threshold. One thing to note is that we are potentially a little too liberal in invalidating executors with this threshold, but with the lack of movement in performance and a more substantial decrease in memory usage, it seemed justified. We can continue to iterate here and consider making this tunable in the future.