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. 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 Start typing memory, then enable two options, Show Clangd Memory Usage and Show memory indicator:ĬLion will add the indicators to the status bar:īoth indicators can be switched on/off from the status bar context menu. Press Control+Shift+A to open the Find Action 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. 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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