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Chapter 4, Xgig TraceControl Capture Configuration General Settings
102 Xgig Analyzer User’s Guide
To specify the frame length, follow these steps:
1 Place the cursor in the Payload/Frame field.
2
Use the arrow keys to select a size, or enter a value in the field.
Number of Segments and Trace Size
The
Number of Segments
and the
Trace Size
fields are used in buffer segmentation. The
sequence of how segments are filled when capturing events is determined by the option used when
you start the capture.
The hardware capture buffer on Xgig Analyzer blades can be divided into different segments.
Buffer segmentation allows you to perform multiple captures within a single capture buffer. Time
between trigger and restarting capture is minimized allowing you to avoid missing critical events
when capturing multiple sections of information. See
“Segment Capture Options” on page 139 ”
for information on selecting a segment and segment capture modes.
The
Number of Segments
and the
Trace Size
fields are interrelated. Setting the value for
Number of Segments determines the value for the Trace Size . The trace size is adjusted based on
the available memory.
For example, if you select 4 as the value for Number of Segments and the total memory available
for that port is 2GB, the
Trace Size
value will be set to approximately 500MB (note that exact
value may vary slightly due to the header size).