Avoid allocations when sorting#751
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frankmcsherry merged 1 commit intoTimelyDataflow:masterfrom Feb 28, 2026
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We've historically used
sort()rather thansort_unstable()for performance reasons (the unstable sorting only performed well for branchless comparisons). Not sure if that has changed at all, but it's now clear that stable sorting is the main source of transient allocations in otherwise stationary dataflows. E.g. theevent_driven.rsbenchmark performs no allocations once up and running with these changes, and .. does really quite a lot of allocations without.