RAM management is a key issue for many Android users. Apps that are hungry for power will force your processor to work overtime and that demands a lot of RAM, which in turn gobbles up your battery. Offending apps need to be quickly weeded out and Android Marshmallow has made this a lot easier by tidying up the RAM drawer. You can now see at a glance how much memory has been used over a set period of time and which app has used the most.
Enter your Settings and then tap on the Memory menu. From here you can see how much memory your phone has used within a given time frame.
Next, tap on the Memory used by apps submenu to reveal which apps have used the most memory so that you can take the necessary action to stop them running.