RFR: 8269870: PS: Membar in PSPromotionManager::copy_unmarked_to_survivor_space could be relaxed
mli at openjdk.java.net
Mon Jul 12 02:55:02 UTC 2021
Membar in PSPromotionManager::copy_unmarked_to_survivor_space could be relaxed.
( Please also refer to the similar membar relaxed in G1ParScanThreadState::do_copy_to_survivor_space )
Per the specjbb2015 test results, it has about 8% improvement in critical.
- move copy back
- Optimize PS by moving copying after forwarding successfully during evac
Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
Fetch: git fetch https://git.openjdk.java.net/jdk pull/4751/head:pull/4751
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