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Intellij idea community plugins10/12/2023 ![]() It is an experimental feature, but we feel it could come in handy in the overall profiling workflow. You will then see the result in the form of a flame graph, call tree, or method list. In the top-right corner of the top pane, click the diff icon and select the snapshot you’ll use as the baseline. jfr snapshots, open two snapshots and navigate to the one you’ve taken after applying your changes. This comparison is very convenient because it provides quick results and lets you make a fast yet reasonable decision to roll back the changes if your code improvement theory proves wrong. Why might you need this? It can be helpful to check whether the applied changes improve or degrade your app’s performance. Starting from our recent EAP for IntelliJ IDEA 2021.3, you can compare. Just right-click on it and select Jump to Source.jfr snapshots’ comparison When you find the necessary method, you can review it in the editor. There is also a filter that allows you to search the whole flame graph or just in a specific subtree. You can easily browse through all of them with the help of the up and down arrows. Just start typing its name in the search bar, and the IDE will highlight the relevant results. It is also possible to zoom the graph with the help of the plus and minus icons and drag it to move to the desired stack frame.Īmong other handy options is fast navigation to a particular method on the flame graph. ![]() For example, once you hover a mouse over each stack frame, you see a tooltip that shows a method name, percentage of the parent sample time, and percentage of total sample time. The flame graph comes with some options that simplify working with it. This allows you to evaluate CPU usage and memory resources easily. The more time a stack frame takes, the wider the dedicated rectangle becomes on the flame graph. Yellow ones represent Java code, while blue ones represent native method invocations. The flame graph is probably the most informative and convenient way to interpret your Java program’s CPU usage. ![]() We provide a range of tools that allow you to thoroughly analyze the profiling results that you get after attaching the profiler to a running process, including a flame graph, call tree, method list, timeline, and events. To open any file of these types quickly, drag and drop it in the editor, open it with File | Open, double-click it in the Project view, or select it among the Recent snapshots listed in the Home tab of the Profiler tool window. The IDE will display the profiling results immediately and start analyzing the problems right away. Once you initiate the profiling process, you can stop it at any moment.
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