You should increase the Java heap space if JobScheduler reports out of memory Java exceptions (java heap space). The message in the log file looks like this:
There are two ways how to increase the available Java heap space. You can achieve this for individual jobs or you can apply the increment for all jobs.
- If you increase the initial heap space (-Xms) for all jobs you could run into memory troubles if you are running to much Java tasks at one time.
- In most cases it is sufficient to apply just a maximum Java heap space with -Xmx.
You should descrease the Java heap space if the JVM crashes with this dump
Increment/Decrement for only one job using Java
If you want to increase the heap space for only one job you can do this by the job configuration, see http://www.sos-berlin.com/doc/en/scheduler.doc/xml/job.xml#attribute_java_options
Increment/Decrement for all jobs using Java
You can increase the maximum Java heap space (set by the JobScheduler when starting the JVM) within the configuration file sos.ini, for example:
You can add more Java options. For example you can set the initial and maximum Java heap space with:
- Please consider the different strategies of Java heap space usage covered in the article How to manage the Java heap space
- For possible JVM options please see the Java documention