General trace and log analysis patterns allow the application of uniform diagnostics and anomaly detection across diverse software environments. It includes troubleshooting, debugging, describing, and explaining problems and incidents on various operating systems and platforms. It is also helpful in recording network traces, malware, general data, narratives, and text and image analysis (space-like narratology). This course, organized as a pattern language dictionary and cross-referenced with classification, explains and teaches more than 200 traces and log analysis patterns.

A Guide to Learning Software Trace and Log Analysis Patterns

## No activity
**No activity** is the limit of the [discontinuity](https://www.educative.io/courses/guide-learning-software-trace-log-analysis-patterns/discontinuity-fiber-flag-glued-last) pattern. The absence of activity can be seen at a thread level or at a process level where it is similar to the [missing component](https://www.educative.io/courses/guide-learning-software-trace-log-analysis-patterns/size-guest-minimal-missing-no-metafile) pattern. The difference from the latter
pattern is that we know for certain that we selected our process modules for tracing but do not see any trace messages. Consider this example:

# No activity
**No activity** is the limit of the [discontinuity](https://www.educative.io/courses/guide-learning-software-trace-log-analysis-patterns/discontinuity-fiber-flag-glued-last) pattern. The absence of activity can be seen at a thread level or at a process level where it is similar to the [missing component](https://www.educative.io/courses/guide-learning-software-trace-log-analysis-patterns/size-guest-minimal-missing-no-metafile) pattern. The difference from the latter
pattern is that we know for certain that we selected our process modules for tracing but do not see any trace messages. Consider this example:

This lesson introduces the following analysis patterns: no activity, phantom activity, piecewise activity, punctuated activity, and resume activity.

Getting Started

Activity

Block and Data

Error and Large Scale

Message 1

Message 2

Trace as a Whole

Trace Set

Vocabulary, Memory, Code and Text

Conclusion

Index

No, Phantom, Piecewise, Punctuated, Resume

No activity