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Configuring Java heap space for Cassandra
On Linux
To configure Java heap space for Cassandra on Linux, you must set it from the variables, MAX_HEAP_SIZE and HEAP_NEWSIZE which are commented by default in the file cassandra-env.sh. The location of the file cassandra-env.sh depends on the type of Cassandra installation.
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- For the system memory 0-2 GB: use half of it.
- For the system memory 2-4 GB: use 1 GB.
- For the system memory 4-32 GB: use a quarter of it.
- For the system memory more than 32 GB: use 8 GB.
On Windows
We recommend setting the min (-Xms) and max (-Xmx) heap to the same value in the Cassandra document to avoid pausing the GC during resizing.
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1. Run regedit from the command line
2. Browse for the key HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Apache Software Foundation\Procrun 2.0\cassandra\Parameters\Java.
3. Right-click Options and select Modify.... You can then change the min and max heap size from -Xms and -Xmx.
Configuring Java heap space for TWCloud
On Linux
- If you start TWCloud from the executable file twcloud, you can configure the -Xmx parameter from the file jvm.options (located in the same folder).
On Windows
- If you start TWCloud from the executable file twcloud.exe, you can configure the -Xmx parameter from the file jvm.options (located in the same folder).
- If you start TWCloud from a Windows service, you must use the Registry Editor to update the value.
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1. Run regedit from the command line.
2. Browse for the key HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Apache Software Foundation\Procrun 2.0\Teamwork Cloud\Parameters\Java.
3. Right-click JvmMx and select Modify....
4. Select Base to Decimal and change the value. The value is in megabytes (mb).
Configuring Java heap space for
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WebApp
Heap space for webapp WebApp is handled by Tomcat.
On Linux
- Heap settings are located in /opt/local/TeamworkCloud/WebAppPlatform/bin/setenv.sh
JVM_OPTS="-server -XX:+UseParallelGC -Xms4096M -Xmx8192M"
On Windows
- The heap setting for webapp WebApp is located in the registry
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