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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 9
Affects Version/s: 8u20, 9
Component/s: hotspot
Labels:

Subcomponent:
gc
Resolved In Build:
b08

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8045276	8u25	Thomas Schatzl	P4	Resolved	Fixed	b01
JDK-8038247	8u20	Thomas Schatzl	P4	Resolved	Fixed	b08
JDK-8053392	emb-8u26	Thomas Schatzl	P4	Resolved	Fixed	b17

In ~~JDK-7145569~~ per region remembered sets for code cache roots were introduced.

The data structure for this was a simple GrowableArray. Measurements for ~~JDK-8027295~~ have shown that reclaiming them is a serious performance bottleneck.

Also ~~JDK-8025813~~ G1: Code root marking unbalanced requires a better data structure that is more amenable to parallelize.

The idea is to change the GrowableArray into a list of chunks containing the nmethod references.

backported by

JDK-8038247 Improve data structure for Code Cache remembered sets

Resolved

JDK-8045276 Improve data structure for Code Cache remembered sets

Resolved

JDK-8053392 Improve data structure for Code Cache remembered sets

Resolved

relates to

JDK-8039839 G1: TestCodeCacheRemSet_test() fails intermittently

Closed

JDK-8280932 G1: Rename HeapRegionRemSet::_code_roots accessors

Resolved

JDK-8038930 G1CodeRootSet::test fails with assert(_num_chunks_handed_out == 0) failed: No elements must have been handed out yet

Resolved

JDK-7145569 G1: optimize nmethods scanning

Resolved

JDK-8025813 G1: Code root marking unbalanced

Closed

(3 relates to)

Assignee:: Thomas Schatzl

Reporter:: Thomas Schatzl

Votes:: 0 Vote for this issue

Watchers:: 2 Start watching this issue

Created:: 2014-02-20 04:24

Updated:: 2022-01-31 01:28

Resolved:: 2014-03-17 06:06

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