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8205921: Optimizing best-of-2 work stealing queue selection

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Bias towards stealing from queues that we recently successfully stole from to decrease the number of unsuccessful steal attempts.

Co-authored-by: Thomas Schatzl <thomas.schatzl@oracle.com>
Reviewed-by: eosterlund, kbarrett
This commit is contained in:
Zhengyu Gu 2018-08-03 11:06:10 +02:00
parent c4faf01f86
commit 4555c28590
19 changed files with 119 additions and 93 deletions
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src/hotspot/share/gc/g1/g1ParScanThreadState.cpp
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@ -47,7 +47,6 @@ G1ParScanThreadState::G1ParScanThreadState(G1CollectedHeap* g1h, uint worker_id,
_age_table(false),
_tenuring_threshold(g1h->g1_policy()->tenuring_threshold()),
_scanner(g1h, this),
_hash_seed(17),
_worker_id(worker_id),
_stack_trim_upper_threshold(GCDrainStackTargetSize * 2 + 1),
_stack_trim_lower_threshold(GCDrainStackTargetSize),