Cache V8 heap stats instead of querying them on every call#4778
Merged
joshua-spacetime merged 5 commits intomasterfrom Apr 14, 2026
Merged
Cache V8 heap stats instead of querying them on every call#4778joshua-spacetime merged 5 commits intomasterfrom
joshua-spacetime merged 5 commits intomasterfrom
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Centril
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Apr 13, 2026
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Centril
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Looks good, but I'd like to just embed your comment re. eventual consistency before we merge.
Co-authored-by: Mazdak Farrokhzad <twingoow@gmail.com> Signed-off-by: joshua-spacetime <josh@clockworklabs.io>
coolreader18
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Apr 13, 2026
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Description of Changes
Previously we would invoke V8's
GetHeapStatisticson every reducer call in order to compute thememory_allocationpart of itsExecutionStats. We already sample heap statistics periodically, so now we cache the result after each sample and just read the cached value after each call. Memory allocation is used for energy tracking and so eventual consistency is fine.API and ABI breaking changes
None
Expected complexity level and risk
1
Testing
Refactor/optimization