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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 15
Affects Version/s: 8-shenandoah, 11-shenandoah, 14, 15
Component/s: hotspot
Labels:

Subcomponent:
gc
Resolved In Build:
b20

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8245373	14u-cpu	Aleksey Shipilev	P4	Resolved	Fixed	master
JDK-8244755	14.0.2	Aleksey Shipilev	P4	Resolved	Fixed	b06

After ~~JDK-8240872~~, we update URWM (update reference watermark) at final-mark, where we retire TLABs already. So we don't need to retire TLABs at Init Update Refs, because they are guaranteed to be past URWM.

This saves about 1.5G of waste on 30G heap in a throwaway scenario for me.

backported by

JDK-8244755 Shenandoah: no need to retire TLABs at Init Update Refs

Resolved

JDK-8245373 Shenandoah: no need to retire TLABs at Init Update Refs

Resolved

is blocked by

JDK-8243301 Shenandoah: ditch ShenandoahAllowMixedAllocs

Resolved

relates to

JDK-8243460 Shenandoah: purge init_update_refs_prepare counter

Resolved

JDK-8240872 Shenandoah: Avoid updating new regions from start of evacuation

Resolved

Assignee:: Aleksey Shipilev

Reporter:: Aleksey Shipilev

Votes:: 0 Vote for this issue

Watchers:: 1 Start watching this issue

Created:: 2020-04-21 10:45

Updated:: 2022-02-24 12:45

Resolved:: 2020-04-22 06:25

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