We have just migrated to Jira 7.13.0 and everything is running fine.
Issue
I notice that I have the following entry types in:
/opt/atlassian/jira/logs/atlassian-jira-gc-2018-12-XX_XX-XX-XX.log.0.current
[GC (Allocation Failure) [PSYoungGen: 239641K->4704K(249856K)] 751323K->516734K(774144K), 0.0617082 secs] [Times: user=0.09 sys=0.00, real=0.06 secs]
Further entry examples at end of details section
I have endeavoured to research similar issues and there exists good instructions on amending JVM memory values but they come with warnings as well. We are a small installation and would like advice on whether these entries really represent something I should look at tuning and what these values may be.
Hopefully the following stats will be (at least some) of the info required to help/advise:
Java VM Memory Statistics
Tools > System. Select System support > System Info > System Info page.
Total Memory: 755MB
Free Memory: 97MB
Used Memory: 13% Free (Total 755MB)
Jira installed within a Debian 9 VM. ESXi Resources: 4 core - 8Gb ram.
The ESXi host is a Dell R630 64Gb ram - 32 logical processors - the host is not 'over-extended'. Jira and a similar size Confluence instance are installed within this same VM.
free -m
total used free shared buff/cache available
Mem: 7987 3758 1665 148 2563 3816
Swap: 8189 0 8189
/opt/atlassian/jira/logs/catalina.out
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Xms384m
org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Xmx768m
Many thanks,
SteveA
atlassian-jira-gc-2018-12-XX_XX-XX-XX.log.0.current
2018-12-10T14:29:56.062+0000: 335086.206: [GC (Allocation Failure) [PSYoungGen: 239641K->4704K(249856K)] 751323K->516734K(774144K), 0.0617082 secs] [Times: user=0.09 sys=0.00, real=0.06 secs]
2018-12-10T15:38:40.122+0000: 339210.266: [GC (Allocation Failure) [PSYoungGen: 243296K->7329K(249344K)] 755326K->521417K(773632K), 0.0537629 secs] [Times: user=0.08 sys=0.00, real=0.05 secs]
2018-12-10T16:12:14.742+0000: 341224.886: [GC (Allocation Failure) [PSYoungGen: 245921K->5692K(250368K)] 760009K->521631K(774656K), 0.0484997 secs] [Times: user=0.07 sys=0.01, real=0.05 secs]
2018-12-10T16:16:35.876+0000: 341486.020: [GC (Allocation Failure) [PSYoungGen: 244284K->2411K(249344K)] 760223K->520999K(773632K), 0.0484928 secs] [Times: user=0.07 sys=0.00, real=0.05 secs]
2018-12-10T16:16:40.446+0000: 341490.590: [GC (Allocation Failure) [PSYoungGen: 241003K->10326K(249344K)] 759591K->530183K(773632K), 0.0453647 secs] [Times: user=0.08 sys=0.00, real=0.05 secs]
2018-12-10T16:16:58.465+0000: 341508.608: [GC (Allocation Failure) [PSYoungGen: 248918K->1579K(249344K)] 768775K->522297K(773632K), 0.0480268 secs] [Times: user=0.07 sys=0.00, real=0.05 secs]
2018-12-10T16:16:58.513+0000: 341508.657: [Full GC (Ergonomics) [PSYoungGen: 1579K->0K(249344K)] [ParOldGen: 520717K->476712K(524288K)] 522297K->476712K(773632K), [Metaspace: 286879K->286238K(1320960K)], 0.8932031 secs] [Times: user=2.30 sys=0.02, real=0.89 secs]
2018-12-10T16:16:59.746+0000: 341509.890: [GC (Allocation Failure) [PSYoungGen: 236544K->4192K(241152K)] 713256K->480904K(765440K), 0.0400680 secs] [Times: user=0.06 sys=0.00, real=0.04 secs]
2018-12-10T16:17:00.381+0000: 341510.524: [GC (Allocation Failure) [PSYoungGen: 240736K->1964K(248832K)] 717448K->478845K(773120K), 0.0375442 secs] [Times: user=0.05 sys=0.00, real=0.03 secs]
2018-12-10T16:17:09.697+0000: 341519.841: [GC (Allocation Failure) [PSYoungGen: 239020K->7989K(248320K)] 715901K->484906K(772608K), 0.0468330 secs] [Times: user=0.06 sys=0.00, real=0.05 secs]
