Depending on your selection of the aggregation level, the method hot spots will change. They and their hot spot backtraces will be aggregated into classes or packages or filtered for Java EE component types.
Note: The notion of a method hot spot is relative. Method hot spots depend on the filter sets that you have enabled in the filter settings. Filtered methods are opaque, in the sense that calls into other filtered methods are attributed to their own time. If you change your filter sets you're likely to get different method hot spots since you are changing your point of view. Please see the help topic on hot spots and filters for a detailed discussion.
If the method belongs to an unfiltered class, this time does not include calls into other methods. If the method belongs to a filtered class, this time includes calls into other filtered methods.
Note: This is not the number of invocations of this method.
Note that the line number shows the line number of the invocation and not of the method itself.
If URL splitting is enabled in the servlet probe
each request URL creates a new node with a
special icon and the prefix
URL:, followed by the part of the request URL on which the hot spot backtraces tree
was split. Note that URL nodes group request by the displayed URL.
When you switch between two aggregation levels, JProfiler will make the best effort to preserve your current selection. When switching to a a more detailed aggregation level, there may not be a unique mapping and the first hit in the hot spot backtraces tree is chosen.
The hot spot backtraces tree doesn't display all method calls in the JVM, it only displays
Runnable.run()
and the main method are always displayed, regardless of
the filter settings.
To quickly expand larger portions
of the hot spot backtraces tree, select a method and choose
View->Expand Multiple Levels from the main window's menu or
choose the corresponding menu item from the context menu. A dialog is shown
where you can adjust the number of levels (20 by default) and the threshold in per mille
of the parent node's value that determines which child nodes are expanded.
If you want to
collapse an opened part of the hot spot backtraces tree, select the
topmost method that should remain visible and choose
View->Collapse all from the main window's menu or
the context menu.
DEL
key
or by choosing Hide Selected from the context menu. Percentages will be corrected accordingly as if the
hidden node did not exist.
When you hide a node, the toolbar and the context menu will get a Show Hidden
action. Invoking this action will bring up a dialog where you can select hidden elements to be shown again.
If a node is excluded, you will get options to add an inclusive filter, otherwise you will get options to add an exclusive filter. These actions are not available for classes in the "java." packages.