Region, Theatre, Adjoint Thread, Blackout, Braid Group

This lesson introduces the following analysis patterns: activity region, activity theater, adjoint thread of activity, blackout, and braid group.

Activity region

When looking at lengthy traces with thousands and millions of messages (trace statements), we can see regions of activity where the statement current (JmJ_{m}, msg/smsg/s) is much higher than in surrounding temporal regions. Here is an illustration for a typical ETW/CDF trace where a middle region of activity (Jm2J_{m2}) signifies a system performing some response function as a user session initialization and application launch.

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