The Performance Monitor code can run in one of four modes:
DISABLED. When the Performance Monitor is disabled, its diagnostic methods immediately return without doing any additional work.
NORMAL. In this mode, the Performance Monitor keeps track only of the current stack of operations. This mode is useful in identifying the location in the code of hung or active threads.
TIME. In this mode, in addition to the current operation stack, the Performance Monitor maintains dictionaries for each operation. These dictionaries store the number of times each operation has been performed, and the minimum, maximum and average time to process that operation.
TIME mode is not meant to be used on a live system for an extended period of time. This mode is for gathering data on the amount of time spent in various parts of the code.
MEMORY. In this mode, the Performance Monitor maintains the information specified for NORMAL and TIME mode. In addition, the Performance Monitor maintains dictionaries that store the number of times each operation has been performed, and the minimum, maximum and average amount of memory required to process that operation. These statistics are estimates and do not take into account asynchronous processing activity that may be occurring. Do not rely on data from only one or two samples, since the Performance Monitor may generate anomalous data that can be ignored.
MEMORY mode causes all requests to the server to be serialized and could possibly cause deadlock. This mode is provided for diagnostics during development only and is not suitable for use on a live system.
Setting the Mode
Set the Performance Monitor’s operating mode at the Performance Monitor Configuration page of the Dynamo Administration UI:
http://hostname:port/dyn/admin/atg/dynamo/admin/en/
performance-monitor-config.jhtml
Click the radio button for the mode you want, and then click the Change Mode button.
You can also set the Performance Monitor’s operating mode by setting the mode property of the component at /atg/dynamo/service/PerformanceMonitor. The value of the mode property is an int corresponding to the mode:
mode | int value |
|---|---|
disabled | 0 (default) |
normal | 1 |
time | 2 |
memory | 3 |
