A dual core processor is a CPU with two separate cores on the same die, each with its own cache. It’s the equivalent of getting two microprocessors in one.
In a SINGLE CORE or traditional processor the CPU is fed strings of instructions it must order, execute, then selectively store in its cache for quick retrieval.
- When data outside the cache is required, it is retrieved through the system bus from random access memory (RAM) or from storage devices.
Accessing these slows down performance to the maximum speed the bus, RAM or storage device will allow, which is far slower than the speed of the CPU. The situation is compounded when multi-tasking.
- In this case the processor must switch back and forth between two or more sets of data streams and programs. CPU resources are depleted and performance suffers.
In a MULTI CORE processor each core handles incoming data strings simultaneously to improve efficiency. Just as two heads are better than one, so are two hands. Now when one is executing the other can be accessing the system bus or executing its own code.
To utilize a Multicore core processor, the Operating System must be able to recognize multi-threading and the software must have Simultaneous Multi-Threading Technology (SMT) written into its code.
- SMT enables parallel multi-threading wherein the cores are served multi-threaded instructions in parallel. Without SMT the software will only recognize one core. Adobe Photoshop is an example of SMT-aware software. SMT is also used with multi-processor systems common to servers.
A Single Core Processor is different from a Multi Core Processor system. In the latter there are two or more separate CPUs with their own resources. In the former, resources are shared and the cores reside on the same chip. A Multi Core Processor System is faster than a system with a Single Core system, all else being equal.
In a Single Core processor there is only a single core but on the other hand in Multi Core processor there are two or more cores
Android OS is very flexible when it comes to customisation and applications, but there are things that can annoy you sometimes when the device freezes, lags or suddenly stops. Being more knowledgeable of the OS, the device and common issues will help owners troubleshoot any Android device.
- Occasional Lags and Freezes The common reason why the device suffers lags or freezes is due to overlapping applications that contradict each other. Be simple and eliminate third-party task manage or battery savers. Android can manage what those apps do. Uninstall any recent applications before the problem occurred.
- Removal of Certain Apps Android core applications stay on your device forever, but there are ways to help you get freedom from bloating the RAM. Android apps such as Maps can be disabled manually. Go to “Settings – Applications – All – Maps”. Clear Data, Force Stop, and Disable it. Once disabled, you have to re-enable it to use the Google Maps app. For other applications, you can check their details as well and select the option “Move to SD card,” if possible.
- Speed Up Performance Try not to stress and push to the limit your Android device all the time even it can. Pushing a device frequently can affect overall performance and stability. If you did something which causes the device to lag at certain times such as use a high-graphics live wallpaper, try choosing another one or stay with still ones. If an app does not work with your device, do not force it. Restart your device frequently to free up memory and get a fresh start.
- Media and Gallery App failed to read media files Sometimes the Android media scanner fails to read media files for music and gallery core apps, but the file manager can browse them from the storages. The main reason is the confusing database Android reads such as multiple album thumbnails, leftover images of apps, and more. The best solution is to create a backup of all media files only, not the entire contents of your storages. Format internal/external storage and transfer back the files. Turn off the devices and switch it on, leave it for 5-10 minutes to complete indexing all files.
- Battery Management According to some experts, third-party battery saver apps that are poorly written can worsen battery problems. If you do not know the safe ones, simply adjust your display brightness so low settings would be visible, switch to still wallpapers, use the back key when leaving applications, turn off Wi-Fi/Bluetooth/GPS/Auto-sync when not in use, use Wi-Fi if available than data connection and uninstall apps which eat more battery than expected.