What is DRE technology in smartphone and how it works ?

 What is DRE technology in smartphone and how it works ?

What is DRE Technology ?

 For the past few months, you too must have been hearing about DRE technology.  We also know this by the name of virtual RAM expansion.  This is a technology that converts the internal storage of the phone into virtual RAM.  Virtual RAM actually uses the phone's internal storage as temporary RAM.  Its main job is to improve memory management.  It helps to keep more apps in memory as compared to physical RAM.  Today you can experience this great technology in many phones of realme.  This includes realme 8 5G, realme Narzo 30 5G, realme X7 Max 5G, realme GT Master Edition, realme GT, realme 8s 5G, realme 8i and realme GT Neo 2.

 Why is DRE Technology needed?

 As the size of apps and other apps with games is increasing, DRE technology is gradually becoming a necessity.  RAM does many things in our phone.  It stores data, helps in multitasking and also increases the speed of the phone.  But the Android phone we have has limited RAM.  In such a situation, considering the needs of multitasking in the phone, physical RAM is not enough today.  In order to extend the capabilities of the smartphone and for better multitasking, Virtual RAM or DRE helps to increase the RAM by using some of the storage as RAM, to store more active apps.

 How DRE Technology Works ?

 Every time you tap on an app, the MMU (Memory Management Unit) has to decide where the app will go in RAM.  When you open a new app again, the MMU plans the space in RAM for the new app as well as the old one.  When you open individual apps, they get collected in RAM, but when there is no space in RAM and you want to open a new app, the system deletes the oldest apps you have open to make up space.  Will give  This means that the next time you open that old app, it will start from the beginning and not where you left it.  If the phone has Virtual RAM or DRE technology, then when opening a new app in the absence of RAM, the system will shift to virtual memory instead of deleting the oldest app.  Virtual RAM can be increased through OTA update.

understand with example

 When you use the virtual memory feature on your smartphone, the phone allocates the amount of memory you choose as virtual, but to allocate space in the internal storage, you will need to restart the phone.  For example, the 6GB configuration of the realme 8s 5G supports expansion of 5GB, up to 11GB in total.  If you increase the RAM, you won't see any increase in the amount of RAM used by the system - while the storage is allocated to virtual RAM, your physical RAM will be of the same capacity.  For example, if you have 10 apps open on your Android smartphone and there is not much space in the phone's RAM, Android closes the apps that are not running in the background or performing any tasks in the background.  , or the system only closes the app that has the lowest priority and is the oldest of the ten apps.

 In simple language, Virtual RAM manages all those apps which have no dynamic function in background and will keep such apps in memory for a long time.  The Android system will take care and prioritize which apps should be stored in virtual memory and which should not.  Virtual RAM will be used only when physical RAM is going beyond its limits to handle the process.  By using the virtual memory feature, more apps can stay in the background for a longer period of time.