TCP/IP (Parallel Library) Configuration and Management Manual

SCF Reference for Parallel Library TCP/IP
HP NonStop TCP/IP (Parallel Library) Configuration and Management Manual—522271-006
5-156
Introduction to PTrace
1. Start the trace interactively with the SCF TRACE command or programmatically
with SPI.
2. The TRACE command allows you to specify attributes, such as the size of the
trace records and the name and maximum size of the trace file.
3. Collect trace data. Send and receive data or perform other operations related to
the problem you are analyzing.
4. Stop the trace with another SCF TRACE command or with SPI.
5. Display the trace file with PTrace.
For additional information on using PTrace, refer to the PTrace Reference Manual.
Device Type and Subtype
When a trace file is created, the type and subtype of the device being traced are
recorded in that file. When PTrace opens the trace file, it uses this information to
determine for which subsystem PTrace is formatting records.
The device type and subtype for the TCPMAN are 68 and 0, respectively. The device
type and subtype for TCPSAM are 48 and 0 respectively.
Figure 5-3. Recording and Displaying Trace Data
VST0503.vsd
Start the trace interactively with
the SCF TRACE command or
programmatically through SPI.
Collect trace data.
Stop the trace with the
SCF TRACE command or
through SPI.
Display the trace file
with PTrace.