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mended to set the start heap size the same as the maximum heap size so that the system
activity for any changes will be kept to the minimum with maximum performance benefit.
T ABLE 23-1 Different Memory Areas of the Java Virtual Machine
The Java heap size must be monitored using tools such as Wily Introscope. This tool will
provide live as well as historical heap usage information. If the heap usage reaches the max-
imum allocated size, the configuration tool can be used to increase the heap size. The fol-
lowing illustration shows that the maximum heap size configured is 2GB and the peak usage
of the heap size is around 1.5GB.
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