8.4.1 Trace Get Point and the PRF Trace Get Level

The following table describes the event IDs, trace collection points, and PRF trace collection levels.

Table 8‒6: Details of trace collection points in a Web container (trace of request processing)
Event ID	No. in the figure^#1	Trace acquisition points	Level
0x8202^#²	6	Immediately before a servlet or JSP is invoked	A/B
0x8203	5	Immediately before the filter is invoked	B
0x8206	7	Immediately before `forward()` or `include()` of RequestDispatcher is invoked	B
0x8207	6	When the static contents are invoked	A/B
0x8234	4	Immediately after the start of synchronous processing	A
0x8235	14	Immediately after the start of asynchronous processing	A
0x8236	3	Immediately after a request is acquired, or when the request header analysis is complete	A
0x8237	1	Immediately before the start of the reading of data from the reverse proxy	B
0x8238	8	Immediately before the start of the writing of data to the reverse proxy	B
0x8239	16	Immediately after the start of asynchronous servlet processing	A
0x8302	11	Immediately after the processing of the servlet or JSP is complete	A/B
0x8303	12	Immediately after the completion of processing of the filter	B
0x8306	10	Immediately after the completion of the `forward()` or `include()` processing of RequestDispatcher	B
0x8307	11	Immediately after the completion of processing of static contents	A/B
0x8334	13	Immediately before the completion of synchronous processing	A
0x8335	15	Immediately before the completion of asynchronous processing	A
0x8336	18	Immediately after the completion of request processing	A
0x8337	2	Immediately after the completion of the reading of data from the reverse proxy	B
0x8338	9	Immediately after the completion of the writing of data to the reverse proxy	B
0x8339	17	Immediately before the completion of asynchronous servlet processing	A

Legend:

A: Standard

B: Advanced

A/B: Different information is collected for the Standard and Advanced levels.

#1

Corresponds to the numbers in Figure 8-9.

#2

If a JSP compilation is required, the trace is collected after the JSP compilation is executed.

The following figure shows the trace collection points in a Web container.

Figure 8‒9: Trace collection points of a Web container (trace of request processing)

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