By connecting various memory spaces (user, kernel, physical, virtual, orbifold, manifold, fiber bundle, adjoint), trace and log spaces, and problem description narratives we introduce Software Diagnostics Space as a search space for finding problem patterns using general and concrete analysis patterns. Using mathematical metaphors we view it as a general graph of statements from Software Problem Narrative (graph vertices) and various software narratives such as logs, traces and memory spaces (edges). Software problem narratives may be different from software problem descriptions (which we get from software users and which have their own analysis patterns) because they are controlled narratives of actor interactions while working with software (top right corner of software narratology square). For completeness, every software narrative edge has vertices by default as start and stop vertices.
Let’s look at one example depicted in the following diagram:
We have the problem description from a user who couldn’t exercise some software functionality unless some service was restarted. This is a problem description narrative (no. 1). A software support person constructed the problem reproduction setup narrative (no. 2) and recorded problem narrative no. 3 – 5 with tracing the client and server software and taking memory snapshots (Adjoint Space trace and log analysis pattern) of the corresponding service and another Coupled Process (memory analysis pattern).
This can all be depicted in the following general graph (multigraph) diagram where loops show adjoint spaces (“instantaneous” artifact snapshots like memory, data):
Such graphs may not be connected, and loops may be replaced by additional multiple edges with extra vertices.
The practical usage of such graphs can be demonstrated by their construction during problem analysis. Suppose that we have a problem description:
After its analysis we construct a problem narrative:
During its trace analysis we identify needed software trace edges:
We add multiple edges if tracing involves several software systems or different trace varieties: