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Type: Bug
Resolution: Fixed
Priority: P4
Fix Version/s: 13
Affects Version/s: 8u192, 9, 10, 11, 12, 13
Component/s: hotspot
Labels:

Subcomponent:
gc
Resolved In Build:
b16

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8319088	11.0.23-oracle	Ivan Bereziuk	P4	Resolved	Fixed	b01

The used() of survivor space MemoryMXBean is based on region granularity. I.e. a survivor region can either be fully used or not.

This causes failures for tests that use the used() value of that MemoryMXBean (linked below) as they do not expect such large jumps in usage after allocation of a few (more) objects in survivor space.

This is day one behavior (and some of these tests have been excluded from testing for a long time now).

After fixing, also re-enable the corresponding tests, verifying that they work again.

backported by

JDK-8319088 Survivor MemoryMXBean used() size granularity is region based

Resolved

blocks

JDK-8081688 SurvivorAlignmentInBytes tests too lenient

Closed

JDK-8220089 G1 reuse survivor region as eden region at the end of gc

Open

duplicates

JDK-8177765 gc/survivorAlignment/TestPromotionFromSurvivorToTenuredAfterMinorGC.java: Actual memory usage should not deviate from expected

Closed

JDK-8190277 TestPromotionToSurvivor - Actual memory usage should not deviate from expected

Closed

JDK-8129886 Test TestPromotionToSurvivor fails with jimage refresh

Closed

is blocked by

JDK-8209062 Clean up G1MonitoringSupport

Resolved

relates to

JDK-8221994 Improve consistency between actual values and MemoryUsage.used() in MBeans

Open

(1 duplicates, 1 is blocked by, 1 relates to)

Assignee:: Sangheon Kim

Reporter:: Thomas Schatzl

Votes:: 0 Vote for this issue

Watchers:: 8 Start watching this issue

Created:: 2019-01-30 02:41

Updated:: 2024-01-03 03:10

Resolved:: 2019-04-08 12:21

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