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javastack-overflowjprofiler

Can JProfiler measure stack depth?

This is closely related to another question: How can I measure thread stack depth?

Can JProfiler watch threads and measure where the deepest stacks occur? If so, how can I do that? I'd like find spots in my application where I'm getting dangerously close to triggering a StackOverflowError.

Solution

  • JProfiler does not have this as a feature directly. However, you can do the following:

    • Record CPU data with sampling and no filters

    • go to the call tree view in the CPU section

    • export the call tree in XML format, selecting the "entire tree" option at the bottom of the file chooser dialog

    • write a small program that analyzes the exported XML file and finds the most deeply nested elements

    You can also automate this with offline profiling and a trigger to record CPU data and save a snapshot. With the "jpexport" command line executable, you can then export the call tree from the saved snapshot.