JProfiler 6.0发布

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In the thread history view, there are now tool tips with stack traces that also include links into the monitor views. These tooltips are available if monitors have been recorded for the time under the mouse cursor.

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A thread dumps view has been added. Thread dumps show all call frames, not only profiled classes. Multiple thread dumps are supported. You can stay on the same thread and cycle through different thread dumps to see changes in the stack trace. Single threads or the entire thread dump can be copied to the clipboard.

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Thread dumps can also be taken with the new "Trigger thread dump" trigger action, the JProfiler MBean or via the Controller API.
       

The new method statistics view shows statistical data on the distribution of method execution times. Most interesting is the "outlier coefficient" that shows how strongly the slowest invocation deviates from the median time. In the lower part of the view, a graph shows the distribution of call times. Here, the y-axis has been set to a logarithmic display in order to show single outliers more clearly.

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Methods with prominent outliers can be further analyzed with the new "exceptional methods" feature explained below. You can right-click any method in the table and choose "Add as exceptional method" from the context menu.
       

Exceptional method runs are the invocations of a method that take most time. Often, a method performs very similarly over a huge number of invocations, but sometimes it takes much longer. Looking at the call tree does not help in this case, since the regular invocations dominate the single slow invocation. With JProfiler 6, you can mark a method as an exceptional method in the call tree views or the method statistics view and the call tree will show the slowest invocations separately.

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You can review and edit exceptional method configurations in the filter settings.

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Tree map view modes have been added to all views that show call trees. The areas of the rectangles in the tree map are proportional to inherent time and there is a cutoff for maximum nesting depth. You can mouse over rectangles to see the method information and zoom in to see a certain region in more detail.

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The biggest objects view in the heap walker has also received a tree map view mode. The areas of the rectangles are proportional to the retained size of the objects.

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Stack trace information for the call tracer has been added. At each trace in the call tracer, you can see the current stack trace in the lower window. This makes it much easier to assess the context of the selected trace.

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Expanding call trees is now more configurable. Instead of the old "Expand 10 level" action, an "Expand multiple levels" action has been added where the number of levels is now configurable. In addition, a threshold can be defined that prevents insignificant nodes from being expanded.

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New profiling settings can now be applied without restarting the JVM if you profile a 1.6+ JVM. This applies to all available options in the profiling settings, the filter settings and the trigger configuration.