Advanced properties include properties for the maximum heap size and the Java Virtual Manager (JVM) memory settings.
You can configure the following advanced properties for the Search Service process:
Maximum Heap Size
Amount of RAM allocated to the Java Virtual Machine (JVM) that runs the Search Service. Use this property to increase the performance. Append one of the following letters to the value to specify the units:
b for bytes.
k for kilobytes.
m for megabytes.
g for gigabytes.
Default is 768 megabytes. Specify 1 gigabyte if you run the Search Service on a 64-bit machine.
JVM Command Line Options
Java Virtual Machine (JVM) command line options to run Java-based programs.
You must set the following JVM command line options:
-Dfile.encoding. File encoding. Default is UTF-8.
-Xms. Minimum heap size. Default value is 256 m.
-XX:MaxPermSize. Maximum permanent generation size. Default is 128 m.
-XX:+HeapDumpOutOfMemoryError. Include option to write heap memory to a file if a java.lang.OutOfMemoryError error occurs.