PTrace Reference Manual

Introduction to PTrace and Trace Files

PTrace Reference Manual—526393-001

1-5

Trace Data Record

Time at which the trace was captured

The value is displayed in microseconds. This time value appears in columns 10

through 24 of the display.

Delta time from the previous record

The value is displayed in microseconds. If the value reaches 999.999999 or

greater, then 999.999999 is displayed. This value appears in columns 26 through

36 of the display.

Trace record number

Trace records are numbered sequentially beginning at 1. This value appears in

columns 38 through 47 of the display.

Subsystem-supplied record label (required)

This label can contain up to 14 characters. It appears in columns 54 through 67 of

the display.

Subsystem-supplied text (optional)

This text field can contain up to 11 characters. It appears (if present) in columns 69

through 79 of the display.

The Delta-time field (3) is zero for the first record and for any record having a

timestamp earlier than the previous record displayed.

If the length of the subsystem-supplied record label is greater than 14 characters, it is

truncated to 14 characters.

If the length of the subsystem-supplied text is greater than 11 characters, it is truncated

to 11 characters.

The trace data varies in length. The content of the trace records depends on the

subsystem. Example 1-2 shows a portion of a trace file displayed with the default

session parameters (labeling is set to ON) and then with labeling set to OFF.