By default, OpenDJ installs with options appropriate for evaluation, not for production.
You can change JVM options for the server in the QuickStart installer,
and alternatively using the Control Panel (Runtime Options > Java Settings),
or with the dsjavaproperties command after editing the
config/java.properties file.
- Heap size
-
The JVM heap size by default is either 256 MB or 1 GB.
In production, use at least a 2 GB heap (-Xms2G -Xmx2G).
- Server optimizations
-
Use -server to select the HotSpot Server VM.
- 32-bit vs. 64-bit
-
For heap sizes over 4 GB on 64-bit systems use -d64.
- Garbage collection
-
Use -XX:+UseConcMarkSweepGC to select the CMS garbage collector for low GC pause times.
- New generation size
-
If your directory handles high throughput, set the new generation size large enough for the JVM to avoid promoting short-lived objects into the old gen space (-XX:NewSize=512M).
