In most cases, Clangd-based engine works faster than the built-in one (and sometimes provides more accurate results).
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Currently, it works for error/warning annotation, certain navigation tasks, code formatting via ClangFormat, and code highlighting with quick-fixes. Check the Clangd-based engineĬLion incorporates a complementary Clangd-based language engine which is enabled by default. To enable Power Save Mode call File | Power Save Mode. It disables all inspections and other highly-consuming background tasks for the entire IDE. Use inspection widget in upper-right corner of the editor: Toggle Power Save modeĪs an alternative to configuring individual checks or files one by one, try Power Save Mode. To lighten it up, you can configure the highlighting level for the currently opened file: none, errors only, or all problems. On-the-fly code analysis is one of the most performance-consuming processes in CLion. Speed up code analysis Tune analysis for a file
Set the desired value and close the dialog. In the popup that opens, start typing Registry, select the corresponding item and press Enter. Press Ctrl+Shift+A or choose Help | Find Action from the main menu.
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For example, -Xmx4096m for 4 GB value instead of the default 2 GB.ĬLion also warns you if the amount of the free heap memory is less than 5% of the maximum heap size:Ĭlick Configure to edit -Xmx in the Memory Settings dialog: Change the amount of memory allocated for Clangd vmoptions file in the IDE config directory and open it in the editor. Go to Help | Edit Custom VM Options - this action will create a copy of the. Go to the Configuration section and set a new value in the Maximum heap size field:Īnother option to increase memory heap is to modify the corresponding JVM option, -Xmx:
In Toolbox, select your CLion version and click the screw nut button on the right.įrom the menu that opens, select Settings: You can also change the heap size from the Toolbox app: In the dialog that opens, set a higher memory heap value in the Maximum Heap Size field. Select Help | Change Memory Settings from the main menu. Increase heap in the Change Memory Settings dialog You can check whether performance slowdowns are caused by low heap memory by monitoring two indicators in the bottom right corner of the status bar: the general Memory Indicator and the Clangd Memory Usage indicator.īoth indicators can be switched on/off from the status bar menu available on right click: Increase memory heap Enable memory indicators This article gives a summary of helpful techniques that you can use to improve CLion performance on large-scale projects.
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