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PTC recommends that, at a minimum, you always include the log summary information provided by default so that you have a record of how the system is performing throughout the day. You can then add to the information or use it as is when troubleshooting system health and performance issues.
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Item
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Description
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JVMName
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Internal name of the JVM.
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HeapMemoryUsage
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Heap memory usage (in bytes).
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NonHeapMemoryUsage
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Memory usage that is not related to the heap (in bytes).
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Uptime
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Number of milliseconds since system startup.
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ProcessCpuTime
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CPU time used by the process (in nanoseconds).
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JITCTime
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Time spent by the Just In Time compiler (in milliseconds).
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GarbageCollectors
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List of the current garbage collectors (in this case, Copy and MarkSweepCompact).
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GCTime
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List of times spent by each garbage collector. Times are in milliseconds and are listed in the same order as the garbage collectors listed in the GarbageCollectors item. In the example, 5201 is the time spent by the Copy garbage collector and 34411 is the time spent by the MarkSweepCompact garbage collector.
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GCCount
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List of the number of garbage collector activities for each garbage collector. Numbers are listed in the same order as the garbage collectors listed in the GarbageCollectors item. In the example, 121 is the number of activities for the Copy garbage collector and 60 is the number of activities for the MarkSweepCompact garbage collector.
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Classes
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Number of classes that are loaded into the system.
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Threads
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Number of live threads in this Java process.
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TotalStartedThreadCount
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Number of threads started in this Java process since the process started.
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PermGenPercentCollUsage
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Percentage of perm gen in use right after the last garbage collection.
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PermGenPercentUsage
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Percentage of perm gen in use at the time of this log entry.
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