Commit 20d4d676 authored by Ben Gamari's avatar Ben Gamari 🐢 Committed by Marge Bot

nonmoving: Don't traverse filled segment list in pause

The non-moving collector would previously walk the entire filled segment
list during the preparatory pause. However, this is far more work than
is strictly necessary. We can rather get away with merely collecting the
allocators' filled segment list heads and process the lists themselves
during the concurrent phase. This can significantly reduce the maximum
gen1 GC pause time in programs with high rates of long-lived allocations.
parent 7c3e39a9
Pipeline #16702 canceled with stages