The settings on this page determine the appearance of the trace.
Symbols decoration
A symbol decoration is an outline added to event symbols to help you identify completed
calls and exit events. The symbols are undecorated by default.
Extended trace line
By default, trace lines do not extend to the right of an exit event, or to the left of a
start event. On a large screen it may be difficult for you to visually match a trace with
its scroll-arrows. In that case, you can set extended trace lines, which extends every
trace line across the screen, and changes dashed sections to solid.
Trace line orientation
By default, trace lines run horizontally across the Viewer window, with time advancing
from left to right. You can change to a vertical orientation to have time advance from top
to bottom. With vertical orientation, the trace names are not shown on the screen.
Display style
The OLT Viewer normally maintains a minimum spacing between events to prevent overlap of
symbols and connecting lines. You can suppress this feature to obtain a highly compressed
view. Once you have selected Compress display, you can customize the
scale of the trace by setting the number of pixels between event symbols.
Real time
The OLT Viewer uses partial-order display by default. Partial order respects causal
relationships between events, but does not necessarily show events in chronological order.
When you select Display real time, the trace refreshes to show a time
scale. Events are drawn along the scale as they actually occurred. You can set the
distance between events by changing the number of microseconds per pixel.
To revert back to a normal display from real-time mode or a compressed display, select Normal display.
Performance analysis
When you enable performance analysis, all parts of the trace lines representing periods of time
between consecutive events longer than a certain time interval are highlighted (red by default). You can change the time
interval by entering a new value on this page. You can change the highlighting color on
the Colors page.