Title: GH-109369: Add machinery for deoptimizing tier2 executors, both individually and globally. by markshannon · Pull Request #110384 · python/cpython · GitHub
Open Graph Title: GH-109369: Add machinery for deoptimizing tier2 executors, both individually and globally. by markshannon · Pull Request #110384 · python/cpython
X Title: GH-109369: Add machinery for deoptimizing tier2 executors, both individually and globally. by markshannon · Pull Request #110384 · python/cpython
Description: This PR just provides the machinery; we still need to add support for exiting executors when their valid flag is falsified. The implementation uses a bloom filter. The advantage of a bloom filter is that it requires no coupling between the executors and the objects they depend on, plus it is simpler to implement and uses less memory than a precise mapping. I've chosen k = 6 and m = 256. This should give a low enough false positive rate for most cases. We want to keep the false positive rate very low, as spurious de-optimizations could be expensive. Issue: gh-109369
Open Graph Description: This PR just provides the machinery; we still need to add support for exiting executors when their valid flag is falsified. The implementation uses a bloom filter. The advantage of a bloom filter i...
X Description: This PR just provides the machinery; we still need to add support for exiting executors when their valid flag is falsified. The implementation uses a bloom filter. The advantage of a bloom filter i...
Opengraph URL: https://github.com/python/cpython/pull/110384
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