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TimeDoctor is a tool to visualize execution traces of tasks, queues, cache behavior, etc. While originally targeting embedded media processors and includes specific features for analyzing audio/video streaming applications it has wider applicability.
Insight, the analysis TechTool for developers is a platform independent tool for viewing & analying run time meta data of applications. It aids in trouble shooting problems, and aids the developer in every day work through very advanced log analysis.
An add-on package for implementations of Contexts and Dependency Injection for the Java EE platform (CDI - JSR-299) providing convenient integration with Perf4j - performance monitoring library for Java applications.
Tuning Fork Visualization Platform is a data visualization and analysis tool built on the Eclipse Rich Client Platform that supports the development and continuous monitoring of systems. It is particularly useful for real-time systems.
JSysmon is a Java library providing access to system information like CPU or Memory usage on various platforms using native calls. It can be used to build cross-platform monitors in your applications.
An adaptable, platform-agnostic application incident reporting infrastructure ranging from logging libs and webservice-based reporting to a J2EE logging server to a pluggable connection to issuemanagers.
inspectorJ is a cross platform java profiler with a graphical client that allows for profiling remote jvms. inspectorj is pre-alpha and is currently under development.
JTimeIt is a small framework for writing and running performance tests of Java sourcecode. It's 100% Java, which provides the opportunity of platform-independent performance tests. Additionally, it supports the measurement of JUnit Tests.