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Server* 製品のサポートは 2024 年 2 月 15 日をもって終了します。Server 製品を利用している場合は、Atlassian Server のサポート終了のお知らせページにて移行オプションをご確認ください。

*Fisheye および Crucible は除く

目的

Garbage collection logs are useful when trying to isolate issues within Java-based applications as they will pinpoint blocked, hung or stuck threads that may be causing downstream effects in the application. It is always useful to collect at least 10 minutes of garbage collection logs, but analysis accuracy is often increased by the amount of recent log data to review.

ソリューション

Linux の場合

Add the following parameters into your Confluence System Properties, in the <confluence-install>/bin/setenv.sh file (be sure to enter the path for your <confluence-home> directory)

-Xloggc:<confluence-home>/logs/`date +%F_%H-%M-%S`-gc.log -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintTenuringDistribution -XX:+PrintGCCause
-XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=5M

Windows の場合

Batch file

If you start Confluence using 'start-confluence.bat', add the below code to setenv.bat

rem Create a timestamp with date and time, replacing ' ' with '0' and '/' with '-'
set atlassian_timestamp=%DATE:~-4%.%DATE:~4,2%.%DATE:~7,2%_%TIME:~0,2%.%TIME:~3,2%.%TIME:~6,2%
set atlassian_timestamp=%atlassian_timestamp: =0%
set atlassian_timestamp=%atlassian_timestamp:/=-%
set atlassian_logsdir=%~dp0..\logs

set CATALINA_OPTS=%CATALINA_OPTS% -Xloggc:"%atlassian_logsdir%\gc-%atlassian_timestamp%.log"
set CATALINA_OPTS=%CATALINA_OPTS% -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=5M -XX:+PrintGCCause
set CATALINA_OPTS=%CATALINA_OPTS% -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintTenuringDistribution 

NB: This will create the garbage collection logs in the <confluence-install> directory.

Service

If you start Windows as a service, add the below to the service by following these steps (be sure to enter the path for your <confluence-home> directory)

-Xloggc:<confluence-home>\logs\gc-%t.log
-XX:+PrintGCDetails
-XX:+PrintGCDateStamps
-XX:+PrintGCTimeStamps
-XX:+PrintGCCause
-XX:+PrintTenuringDistribution
-XX:+UseGCLogFileRotation
-XX:NumberOfGCLogFiles=10
-XX:GCLogFileSize=5M