Idea Linux 下的配置 max_user_watches

https://confluence.jetbrains.com/display/IDEADEV/Inotify+Watches+Limit

1. Add the following line to either /etc/sysctl.conf file or a new *.conf file (e.g. idea.conf) under /etc/sysctl.d/ directory:
fs.inotify.max_user_watches = 524288

2. Then run this command to apply the change:
sudo sysctl -p --system

And don't forget to restart your IDE.