Intellij profiler code#
Intellij profiler windows#

For more information, refer to Speed search in tool windows. As you type, the Search for field appears over the tool window showing the entered characters, and the selection moves to the first item that matches the specified name. On the Classes tab and in the Object view, you can use speed search. Retained Objects: shows objects in a way that the next level shows those objects that are immediately prevented from being garbage collected. Every instance has only one dominator or hasn't got any. Incoming References: incoming references from other instances.Дominators: allows you to see the instances that prevents the previous instances from being garbage collected. Shortest Paths: the shortest reference chains to garbage collector roots for the instances that haven't been garbage collected. You can also right-click an item and select Open in New Tab or press Enter.ДЇor each class instance, there are several tabs that allow you to calculate and display the following information: You can open the view by double-clicking an item on the Classes tab. The Object view displays class instances ordered by their retained size. This helps you quickly identify which subsystem accounts for most memory consumption and possible memory leaks. The Packages tab shows the breakdown for all objects by package. The Summary tab shows general information, for example, the total size, number of instances and stack traces of the file. This information helps understand how classes are retained. For every class name, you can see the number of objects in it. The Merged Paths tab shows dominator objects that are grouped by class. This information is an overview of all objects that could not be garbage collected the moment the snapshot was taken. The GC Roots tab shows garbage collector root objects grouped by classes. This tab can help you find memory leaks caused by individual objects. These objects are presented as dominator tree roots. The Biggest Objects tab lists objects that retain most of the memory ordered by their retained size. The right-hand part of the snapshot has several tabs that allow you to calculate and display the following information: The object's retained size is the sum of the object's shallow size and the shallow size of its retained objects (objects that can be accessed only from this object). Retained size: the sum of the object's retained sizes. Shallow size: the sum of all objects' shallow sizes, where the shallow size of an object is the amount memory allocated to store the object itself. The left-hand part of the snapshot displays the list of classes in your application, how many times each class is used, its shallow size and its retained size. IntelliJВ IDEA opens the Profiler tool window with a memory snapshot breakdown.

Memory snapshots are saved to the home directory on your computer.

When the snapshot is captured, a notification appears at the bottom of the screen.ДЄfter that, you can open the IDE snapshot from the main menu. This action takes a snapshot of the IDE itself, not the application that you develop.ДЇrom the main menu, select Help | Diagnostic Tools | Capture Memory Snapshot. In the dialog that opens, select the snapshot file and click Open.

Intellij profiler windows#

Open a profiling reportДЇrom the main menu, select View | Tool Windows | Profiler and click Open Snapshot.ДЄlternatively, from the main menu, select Run | Open Profiler Snapshot | Open or drag the necessary file from your system file manager to the editor. The snapshot is saved to the snapshots folder and appears under Recent Snapshots in the Profiler tool window. Take a memory snapshotДЇrom the main menu, select View | Tool Windows | Profiler, right-click a running process and select Capture Memory Snapshot. In IntelliJВ IDEA, you can capture memory snapshots of running processes and analyze them in the Profiler tool window.

Intellij profiler code#

You can analyze the heap to locate the parts of the code that use large amounts of memory resources, and to find memory leaks. Memory snapshots are useful for identifying performance problems.