In some cases, Revision Graph can take a long time to gather all of the information required to render a full graph. An option in the P4V Preferences dialog to limit the Revision Graph to just the ancestors and descendants of the file specified can help alleviate this delay. This can significantly improve performance when selecting files that have a lot of indirect integration history.
So what's different?
Choosing this option will make a difference in the information displayed by the Revision Graph. Specifically, neither the "ancestors of descendants" or "descendants of ancestors" will be shown. This means that none of the files integrated to, or from, the files that are excluded, will be graphed.
Where is the option?
Beginning with P4V 2012.1, the"Limit Revision Graph to ancestors and descendants" option is available when you select Edit > Preferences > Tools
In earlier releases of P4V, the option is available when you select Edit > Preferences > General
Here is an example of a Revision Graph run against a file (file3) that has both "ancestors of descendants" and "descendants of ancestors".
Above is the normal Revision Graph for file3. Below you can see the limited Revision Graph, which does not include file1 or file5; both of these files are indirectly related to file3 (file1 is a "descendant of an ancestor" and file5 is an "ancestor of a descendant").