I have been using PHPStorm for couple years on Mac, but it is the first time I realize this.
I am not sure about previous version, but the current version 2016.3.1 - 2016.3.2, it consumes a lot of memory on Mac El Capitan (Mid 2015). It will go from 1.3G when I open it to over 2G while I am coding.
My mac has 16G men, but PHPStorm and the two software (MySQL Workbench and Chrome) will eat 8G about it. Usually after couple hours work, PHPStorm will go to 1.8G, Chrome will go to 2.2, and Workbench will go to 2.5G. My Mac freeze completely many times since I upgrade to 2016.3.
I know Workbench and Chrome consume a lot memory as well. But I am just wondering, is it normal that PHPStorm consume memory between 1.3 - 2G on Mac El Capitan? If it is OS issue, I will try to upgrade to the new one. Not sure if the other Mac users or Windows users have same issue.