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Type: Enhancement
Resolution: Not an Issue
Priority: P4
Fix Version/s: tbd
Affects Version/s: None
Component/s: hotspot
Labels:
- gc-g1

Subcomponent:
gc
CPU:

generic
OS:

generic

Each SATBMarkQueueSet and DirtyCardQueueSet has a shared queue of the corresponding type. These shared queues are used by enqueue operations when the current thread is not a JavaThread. However, even non-JavaThreads have embedded GCThreadLocalData, which contains the per-thread SATB and dirty card queues. We should just use those queues, rather than a (possibly highly contended) shared queue.

is blocked by

JDK-8209975 Some GCThreadLocalData not initialized

Resolved

JDK-8210024 JFR calls virtual is_Java_thread from ~Thread()

Resolved

JDK-8219613 Use NonJavaThread PtrQueues

Resolved

relates to

JDK-8162929 Enqueuing dirty cards into a single DCQS during GC does not scale

Resolved

JDK-8215097 Do not create NonJavaThreads before BarrierSet

Resolved

JDK-8220240 Refactor shared dirty card queue

Resolved

JDK-8170020 Add helper for shared PtrQueue enqueuing

Closed

JDK-8173211 G1: Enqueuing dirty cards during reference enqueuing in phase 3 does not scale

Closed

(3 relates to)

Assignee:: Kim Barrett

Reporter:: Kim Barrett

Votes:: 0 Vote for this issue

Watchers:: 2 Start watching this issue

Created:: 2018-08-26 14:52

Updated:: 2024-10-09 13:32

Resolved:: 2019-03-22 14:43

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