File | Settings | Version Control | Background
In this page, enable performing specific version control related operations in the background without any activities from your side.
In this area, specify the version control related operations to be performed in the background.
To enable running an operation in the background, select the relevant check box:
|Changelists to cache initially||Use this spin box to specify the number of changelists to be stored in the cache.|
|Refresh changes every ... minutes||
Use this spin box to specify how often the VCS should check for new changes and refresh the cache.
The spin box is only enabled when the Enable background processes check box is selected.
|"Changed on server" conflicts||
In this area, specify whether you want PhpStorm to check whether a checked out files have been updated by someone else.
To enable background synchronization with the server, select the Check every ... minutes.
In the spin box, specify how often you want synchronization to take place.
This area is only enabled when the Enable background processes check box is selected.