0006220: FreeList may be pooling extremely large objects

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Category

Severity

Reproducibility

Date Submitted

Last Update

0006220

[Resin]

minor

always

03-16-19 12:04

03-18-19 08:12

Reporter

nam

View Status

public

Assigned To

Priority

normal

Resolution

no change required

Platform

Status

closed

Projection

none

OS Version

ETA

none

Fixed in Version

Product Version

4.0.61

Product Build

Summary

0006220: FreeList may be pooling extremely large objects

Description

(rep by Naohisa)

FreeList may be pooling extremely large objects. This has contributed to OOM errors.

Some possible options:
1. add size check of item being freed and pool only if below threshold
2. add FreeList.onLowMemory()
3. add log message when freeing large objects

2019-03-06 10:53:04 Health Alarm MemoryPermGenHealthCheck CRITICAL:0.00% free (0.000M free, 7516.193M max, 7516.193M used)

char[] 5.75G 5.75G 25923768
java.lang.String 4.50G 644.03M 26834788
java.util.HashMap$Node 2.41G 282.15M 8817174
java.lang.Object[] 1.88G 57.92M 193164
com.caucho.vfs.ByteToChar 1.03G 9.17K 191
java.lang.StringBuilder 1.03G 12.22K 509
java.lang.StringBuffer 826.30M 959.42K 39976
java.util.HashMap$Node[] 652.20M 93.32M 558756

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Issue History
Date Modified	Username	Field	Change
03-16-19 12:04	nam	New Issue
03-16-19 12:09	nam	Description Updated
03-18-19 08:12	ferg	Status	new => closed
03-18-19 08:12	ferg	Resolution	open => no change required

Mantis 1.0.0rc3[^]

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