Formatted GTF trace output

This topic describes GTF trace output records formatted by the IPCS GTFTRACE subcommand. In each formatted record, the length of each field is indicated by the number of characters. The characters indicate the type of data in the field, as follows:

c: Character
d: Decimal
h: Hexadecimal
x: Variable information
y: Variable information

The CCW trace record format uses additional letters to distinguish parts of fields.

A trace record can contain indicators to denote unusual conditions that occurred while GTF was tracing the event for the record. The indicators are:

N/A

Not applicable. The field does not apply in this record. In a 2-byte field, not applicable appears as N/.

U/A

Unavailable. GTF could not gather the information. In a 2-byte field, unavailable appears as U/.

PPPPPPPP

Unavailable because of a page fault encountered while GTF was gathering the data (SVC only).

SSSSSSSS

Unavailable because of security considerations (SVC only).

********

Unavailable because of an error that occurred while GTF was gathering the data or due to the data being paged out.

X'EEEE'

Unavailable because of a severe error that occurred while GTF was gathering the data. This value appears in the first 2 data bytes of the trace record. The contents of the trace record are unpredictable.