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The software DSpace relies on does not come out of the box optimized for large repositories. Here are some tips to make it all run faster.
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Give Tomcat More Memory
Give Tomcat More Java Heap Memory
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Similar to Tomcat, you may also need to give the DSpace Java-based command-line tools more Java Heap memory. If you are seeing java.lang.OutOfMemoryError: Java heap space errors, when running a command-line tool, this is a sure sign that it isn't being provided with enough Heap Memory.
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JAVA_OPTS=-Xmx512m -Xms512m
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This is especially useful for big batch jobs.
Give the Command Line Tools More Java PermGen Space Memory
Similar to Tomcat, you may also need to give the DSpace Java-based command-line tools more PermGen Space. If you are seeing java.lang.OutOfMemoryError: PermGen space errors, when running a command-line tool, this is a sure sign that it isn't being provided with enough PermGen Space.
By default, Java only provides 64MB of maximum PermGen space.
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If you'd like to provide *more* PermGen Space to command-line tools, you can do so via the {{JAVA_OPTS}} environment variable (which is used by the {{\[dspace\]/bin/dspace}} script). Again, it's the same syntax as above: |
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JAVA_OPTS=-XX:MaxPermSize=128MB
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This is especially useful for big batch jobs.
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JHU Analysis of Ingest DB Activity
JhuIngestDbAnalysis - OUTDATED!