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.

Author: Meztikasa Malale
Country: Comoros
Language: English (Spanish)
Genre: Video
Published (Last): 15 September 2015
Pages: 419
PDF File Size: 15.66 Mb
ePub File Size: 17.82 Mb
ISBN: 654-8-33067-580-5
Downloads: 57501
Price: Free* [*Free Regsitration Required]
Uploader: Dougor

Layouters in the Call Graph view. The classes view of the heap walker reveals three issues: The integration has been available on the plugin server since the EAP and is now bundled with this JProfiler release.

Remote profiling through an SSH tunnel Without a thread profiler, you only have a minimal chance to tackle such issues.

Tool Report: JProfiler

Thus, we take the easy way out. Like you said, it depends from the situation. We freeze all the views in JProfiler and start working on the analysis. Previously only the hierarchic layouter was available in the call graph. Spring From the Trenches: Finding a memory leak can be impossible without the right tool. JProfiler lets you specify which packages you want included in the profile report.


We can see immediately that most of the time is spent in javax.

Permalink Aug 23, With the profiling platform you can write your own custom profiler for special situations. Have a look at JProfiler’s sibling product perfino. If we believe that premature optimization really is the root of all evil, the odds are that we commit our code to version control and move on to our next task.

The Slow Find By Id Method I had implemented a simple service method that fetched the information of an entity from the database by using its id as a search criteria.

This view is useful for debugging as well as profiling.

This is the inefficient action we want to look at for our example. Now we’ll use Jproiler heap walker to examine this allocation problem from a close-up perspective.

3 Disasters Which I Solved With JProfiler

JProfiler’s heap walker offers you an intuitive interface to solve both simple and complex memory problems. I had implemented a simple documentatiln method that fetched the information of an entity from the database by using its id as a search criteria.

The key to finding out where all the time is spent is JProfiler’s “Hot spots view”. I like its user interface that looks good and it is in my opinion quite easy to use. 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 jprofilet and tested the search function.


Created by luman wanglast modified on Mar 12, This release supports eclipse 3. Although I agree with him, I also think that is extremely easy to use this quote as an excuse for not doing our job.

JProfiler API documentation

Offline profiling and triggers In addition, the call tree is split up for each request URI. As a result, the two screenshots on the right show who is referencing these arrays.

However, CPU data can be overwhelming in its level of detail and the way data is collected can make a huge difference in usability. We are interested in profiling the Jclasslib display action, not the Jclasslib documentztion.

Java Profiler – JProfiler

Reference it has a referent field which holds the content of the weak reference. Contains the classes for creating an injected probe. It is a highly useful tool for observing doocumentation development of classes whose instance counts are critically high or continuously rising due to a possible memory leak.

Before I started to fix this problem, I wanted to know what information is fetched from the database and how long it takes to fetch that information.