15.3 Output information of the trace based performance analysis file (for the trace based performance analysis)
The trace based performance analysis collects the trace information for the functionality layer.
The following table shows the information, output by each function layer, that differs in V9 compatibility mode and in recommended mode.
|
Trace information header |
Description |
Range of values |
|---|---|---|
|
Thread |
Thread ID and hash value of the thread in the process that acquired the trace information#1. |
Thread ID: A decimal number up to twenty digits is output. Hash value: A decimal number up to ten digits is output. |
|
ProcessName |
Process name |
A string#2 displaying the process up to 32 characters is output. |
|
OPT#3 |
Additional information for each collection point. |
A hexadecimal number string up to 514 characters is output. |
- #1
-
There are cases when the hash value of a thread is not output in the trace information acquired by the redirector and CTM.
- #2
-
For a redirector, the process name is determined as follows:
-
In the case of redirector
If Hitachi Web Server is used as the Web server, "RD-Web-server-waits-to-receive-request-on-this-port-number" will be the process name. If Microsoft IIS is used, the process name will be Redirector.
-
- #3
-
Some function layers have trace collection points that output the entry time to OPT. The entry time is the time at which the entry trace corresponding to the trace of the trace collection point is output. For example, in the case of trace collection point of a redirector, the entry time output at the trace collection point when the process of sending HTTP response body information to a Web server finishes (0x8104), will be the time to start sending the HTTP response body information from a Web container (0x8004).
Note that the entry time is output in 16 bytes that is the time elapsed from 01/01/1970 00:00:00. The first 8 bytes of the value are seconds and the last 8 bytes of the value are microseconds. However, in the case of trace based performance analysis of redirector, the last 8 bytes are milli seconds.