intellij_performance_settings

Intellij IDE configurations for high-performance. VMoptions and properties files are directly usable in the IDE, assuming your hardware can handle it.

• To add to the IDE: Help -> Edit Custom Properties / Edit Custom VM Options

More Performance tips:

System

• IDEA is heavily IO-bound
• Do not store sources, caches or system directories on network drives
• Disable antivirus scanning for system directory
• Regularly run disk defragmenter
• Turn off Windows System Restore

JVM

• In –server mode, increasing –Xmx helps IDEA’s caches live longer
• Parallel GC helps on multicore machines but may cause stability issues

IDE

• Use latest version
• Disable unused plugins
• Exclude unneeded folders
• Set version control to None for generated code
• Avoid large number of unversioned files
• Do not disable “Synchronize files on frame activation”
• Switch Project view to “Project” rather than “Packages”
• Disable expensive inspections
• Disable framework-specific validation on Make
• Do not use method breakpoints

source - https://www.slideshare.net/intelliyole/intellij-idea-architecture-and-performance

More info and other useful links

• Automating Sharing of IDE Settings
• Configuring JVM options and platform properties
• Common JVM options used with Intellij and what they do
• Directories used by the IDE to store settings, caches, plugins and logs