JProfiler 5.2.1

Major Features:

1. Exceptional ease of use: When you profile, you need the most powerful tool you can get. At the same time, you do not want to spend time learning how to use the tool. JProfiler is just that: simple and powerful at the same time. Configuring sessions is straight-forward, third party integrations make getting started a breeze and profiling data is presented in a natural way. On all levels, JProfiler has been carefully designed to help you get started with solving your problems.
2. Real-time display of profiling data: With JProfiler you can immediately observe profiling data as your application is running. Memory, CPU, and thread profiling views are updated live and can be inspected without the need to wait for the measurement to complete. For a large number of use-cases, this ability will provide you with an extremely fast path to a solution. In addition, you can save snapshots at any time, interactively as well as programmatically.
3. The unique heap walker: Finding a memory leak can be impossible without the right tool. JProfilers heap walker offers you an intuitive interface to solve both simple and complex memory problems. 5 different views show different aspects of the current set of objects. Each view allows you to create new object sets based on the displayed data. Each view provides you with essential insights on the selected objects. Questions like why objects are not garbage collected are answered with a single click of the mouse.
4. The powerful CPU profiler: Fixing performance bottlenecks is the most frequent use case for a profiler. However, CPU data can be overwhelming in its level of detail and the way data is collected can make a huge difference in usability. With JProfiler, you have a decisive advantage when trying to find the reason for a problem. Call tree view filters, aggregation levels and thread status selectors are just some examples of JProfilers versatility in this area.
5. The integrated thread profiler: Problems related to threading are much more frequent than one might assume. Without a thread profiler, you only have a minimal chance to tackle such issues. A whole range of otherwise opaque problems can be solved when using JProfiler, such as increasing liveness in a multi-threaded application that uses too much locking. Thread profiling not only has a separate view section in JProfiler, it is also tightly integrated into the CPU profiling views.
6. Excellent support for Java Enterprise Edition: Dedicated support for JEE is present in most views in JProfiler. For example, in the JEE aggregation level you see the call tree in terms of the JEE components in your application. Also, JProfiler adds a semantic layer on top of the low-level profiling data, like JDBC, JMS and JNDI calls that are presented in the CPU profiling views. With its JEE support, JProfiler bridges the gap between a code profiler and a high-level JEE monitoring tool.
7. Extensive QA capabilities: JProfiler is ideally suited as a QA tool, both during development as well as for dedicated QA teams. The rich functionality around snapshot comparisons makes it easy to track progress. JProfiler has strong support for command line operations. This includes the ability to profile, export snapshot data and create snapshots comparisons from the command line. The ant tasks bundled with JProfiler allow you to perform all command line operations from your build script.
8. Broadest support for platforms, IDEs and application servers: JProfiler integrates into your environment: We provide native agent libraries for a wide range of platforms, both for 32-bit and 64-bit JVMs. Integrations into all popular IDEs makes profiling during development as easy as running your application. And the large number of integrations wizards for nearly all application servers on the market ensures that you can get started with a few clicks and not with reading documentation.
9. Low overhead: JProfiler records data only when you need it. In fact, you can start your application with the JProfiler agent and attach the JProfiler GUI at a later time. When you do not record any data, the overhead is extremely small. Thats what we call on demand profiling. Invariably, there are a lot of things you can adjust in an advanced profiler. JProfiler shows you how your profiling settings will impact performance and offers you templates to quickly select profiling settings for common use cases.
10. Extensibility: JProfiler is extensible. It is built on a well-documented platform that allows you to build your own custom profiler for special situations or your own analysis tool for snapshots. With the interceptor API you can add additional semantic layers to the profiling data, similar to the built-in JDBC, JMS and JNDI profiling. The ready-to-run examples show you how easy it is to extend JProfiler with a few lines of code.

Enhancements:

1. New features:
   • Added a view setting to switch off display of declaring classes for the reference trees in the heap walker
   • Heap walker, tree of incoming references: Show declaring classes if different from actual class
   • Heap walker, reference graph: Improved tooltip display and show declaring classes if different from actual class
2. Bugs fixed:
   • Taking a heap snapshot could fail under some circumstances with an ArrayIndexOutOfBoundsException
   • Heap walker, tree of incoming references: It was possible to invoke "Show paths to GC root" on GC root nodes themselves with confusing results
   • Heap walker, tree of incoming references: Multiple selection did not always work as expected
   • Heap walker, tree of incoming references: Object IDs were shown for GC roots
   • Heap walker, reference graph: Multiple references from fields with the same name in superclasses were not displayed
   • Heap walker: Deep size and retained size for the current object set were shown in a confusing order
   • Heap walker: Selection steps were initially not shown even if selected in the view settings
   • Payload descriptions (e.g. JDBC statements) with a size of more than 64kB caused an exception to be thrown in the profiled JVM
   • Tooltips in graphs are now shown immediately and are not hidden after a few seconds