This documentation specifies the public API for controlling offline profiling, accessing the JProfiler MBean, writing embedded probes and injected probes as well. This documentation is intended to be read in sequence, with later help topics building on messages prefixed with JProfiler> so you know that profiling is active. The platform is contained in $JPROFILER_HOME/bin/, documentation can This API allows you to add functionality to JProfiler similar to the built-in.

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Configuring sessions is straight-forward, third party integrations make getting started a breeze and profiling data is presented in a natural way. Before we select dodumentation method for display, we reset the CPU data in JProfiler to eliminate the profiling information collected during startup of Jclasslib.

ej-technologies – Java APM, Java Profiler, Java Installer Builder

Also, if we find a problem when we profile our code, it is a lot faster to fix it because: Also, if our code has performance issues when it is run in the production environment, we solve this problem by stating that they are caused by technical debt. Important concept of JProfiler 3. However, CPU data can be overwhelming in its level of detail and the way data is collected can make a huge difference in usability. Profiling class loaders and solving related memory leaks We have selected the Jclasslib class file browser as our application available from http: When we look at the garbage collector telemetry view, we can see that during the creation of the document a substantial number of short-lived objects are created on the heap.


JProfiler API documentation

After I got the data, I fixed the problem by using jpofiler combination of lazy fetching and joins this function was later replaced with an implementation that used SQL.

Without a thread profiler, you only have a minimal chance to tackle such issues. Cumulating and filtering monitor events Like you said, it depends from the situation.

Have a look at JProfiler’s sibling product perfino. Fixing performance bottlenecks is the most frequent use case for a profiler.

Besides the views presented above, there are many other views and features in JProfiler. Creating a custom probe For example, the number of objects, the size, the method execution stack created by the object, the hot spot created by the object. Because I noticed that these entities had a lot of one-to-one relationships and all of them were loaded eagerly, I configured Hibernate to write the invoked SQL statements to the log and tested the search function.

Contains classes that represent parameters for requesting profiling data from a connection. This means that they must be easy to use or easy to learn. Class objects in the Classes view of the heap walker.


With the profiling platform you can write your own custom profiler for special situations. Each view provides you with essential insights on the selected objects and lets you switch to different objects sets.

Finding JDBC connection leaks JProfiler also offers a top-down view displaying the entire call tree. I agree that fundamentalism is a bad thing, and we should always consider the ROI of our actions.

3 Disasters Which I Solved With JProfiler

A filtered list of screencasts for all products can be viewed directly in the blog. Thanks for some nice stories of profiling.

Locking graphs in JProfiler This view is useful for debugging as well as profiling. An example of installation and configuration Website? The “Hot spots view” is a bottom-up view. Monitor events versus locking doxumentation Finding paths between selected instances