NMON Visualizer is a Java GUI tool for analyzing NMON system files from both AIX and Linux. It also parses IOStat files, IBM verbose GC logs, Perfmon CSV data and JSON data.
For more information, including links to download an executable JAR file, see the website.

1. Download Apache Ant and unpack into a directory, which we'll refer to as ${ANT_HOME}
2. From the root directory of nmonvisualizer, run ${ANT_HOME}/bin/ant. This will create an executable JAR file in the root directory.