8.2.2 PRF trace collection level
In the trace based performance analysis, you can specify the following four types of PRF trace collection levels to output the trace. The number of trace collection points differs depending upon the PRF trace level used. For details about the trace collection points, and PRF trace collection levels, see the references described in Table 8-2.
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Output the trace information that can identify the boundaries (entrance and exit) of each function layer.
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Output the trace information of processes in every function layer, in addition to the output contents of the standard level.
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This is the level for acquiring the maintenance information required when a failure occurs.
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This is the level for preventing the output of trace information. This level can be set up in the functional layers of RMI, JSF 2.2, JAX-RS, Java batch, WebSocket, and Concurrency Utilities.
When the operation is performed by using the Management Server, the trace information is output by setting up a common level for all function layers, in the Easy Setup definition file.
In the next sections, the trace collection points for the trace collection levels Standard and Advanced are described. Because the Maintenance level is the level for collecting maintenance information, such as when a failure occurs, the information for this level need not usually be collected.