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  1. Confluence Data Center
  2. CONFSERVER-79961

As an admin, I want date timestamps in Garbage Collection Logging to be enabled by default

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      Problem Definition

      The default Java 11 Garbage Collection Logging settings do not specify any custom sets of decorators.

      ...
CATALINA_OPTS="-Xloggc:$LOGBASEABS/logs/gc-`date +%F_%H-%M-%S`.log -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=5 -XX:GCLogFileSize=2M ${CATALINA_OPTS}"
...

      As a result, default decorators would then be used - uptime, level, and tags. Please refer to the sample GC log snippet below:

      ...
[1.374s][debug][gc,age] GC(0) Desired survivor size 3670016 bytes, new threshold 15 (max threshold 15)
[1.583s][debug][gc,age] GC(1) Desired survivor size 3670016 bytes, new threshold 1 (max threshold 15)
[2.020s][debug][gc,age] GC(2) Desired survivor size 17825792 bytes, new threshold 15 (max threshold 15)
[2.767s][debug][gc,age] GC(4) Desired survivor size 18350080 bytes, new threshold 15 (max threshold 15)
[4.238s][debug][gc,age] GC(5) Desired survivor size 22020096 bytes, new threshold 15 (max threshold 15)
...

      Suggested Solution

      To specify a set of decorators in the default Confluence's GC logging as well as to add time decorator, to show current time and date in ISO-8601 format.
      This would be very helpful in troubleshooting performance related issues in Confluence.

      Workaround

      Modify the <Confluence-Installation>/bin/setenv.sh file as follow:

      From:
      CATALINA_OPTS="-Xlog:gc+age=debug:file=$LOGBASEABS/logs/gc-`date +%F_%H-%M-%S`.log::filecount=5,filesize=2M ${CATALINA_OPTS}"
      To:
      CATALINA_OPTS="-Xlog:gc*:file=$LOGBASEABS/logs/gc-%t.log:tags,time,uptime,level:filecount=5,filesize=2M ${CATALINA_OPTS}"

            [CONFSERVER-79961] As an admin, I want date timestamps in Garbage Collection Logging to be enabled by default

            James Whitehead added a comment -

            A fix for this issue is available in Confluence Server and Data Center 8.0.0.
            Upgrade now or check out the Release Notes to see what other issues are resolved.

            James Whitehead added a comment - A fix for this issue is available in Confluence Server and Data Center 8.0.0. Upgrade now or check out the Release Notes to see what other issues are resolved.

              ablekhman@atlassian.com Alex Blekhman (Inactive)
              lrura Lauretha Rura
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                Created:
                Updated:
                Resolved: