![]() However, if you are constantly opening new files and switching between several projects, you may need to increase the young generation. This will set the size of the young generation to be 1/2 to 1/4 of the old generation correspondingly, which is good when you are often working on one project and only a few files at a time. In most cases, a ratio between 2 and 4 is recommended. ![]() Specifies the ratio between the size of the young and old generation of the heap. It is usually set to about half of the maximum allowed memory ( -Xmx), for example, -Xms1024m. The default value depends on the platform. Specifies the initial memory allocated by the JVM for running WebStorm. If you are experiencing slowdowns, you may want to increase this value, for example, to set the value to 2048 megabytes, change this option to -Xmx2048m. ![]() Limits the maximum memory heap size that the JVM can allocate for running WebStorm. The following are the most commonly modified ones: The default values of the JVM options should be optimal in most cases. Use it only to check what are the default options that WebStorm uses. If there are no JVM options files defined in the previous locations, WebStorm will use the default JVM options file. If you are running a standalone WebStorm instance, check the configuration directory. Under Configuration, find Java Virtual Machine options and click Edit. If the Toolbox App manages your current WebStorm instance, open the Toolbox App, click next to the relevant IDE instance, and select Settings. If the specified file exists, it will override all other JVM options files. The location specified by the WEBIDE_VM_OPTIONS environment variable. If you are not sure where WebStorm is getting its JVM options, check the following: Open the Toolbox App, click next to the relevant IDE instance, and select Settings. If you are using the Toolbox App, it manages the installation and configuration directory and lets you configure JVM options for every IDE instance. This file will override both the original default file and the copy located in the WebStorm configuration directory. If you do not have write access to the WebStorm configuration directory, you can add the WEBIDE_VM_OPTIONS environment variable to specify the location of the file with your preferred JVM options. If you cannot start WebStorm, manually copy the default file with JVM options to the WebStorm configuration directory. If you do not have any project open, on the Welcome screen, click Configure and then Edit Custom VM Options. Configure JVM optionsÄo one of the following to create a copy of the default file with JVM options in the configuration directory that will override the original file: Moreover, in case of macOS, editing this file violates the application signature. Do not change JVM options in the default file, because it is replaced when WebStorm is updated.
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