Measures reported by RPiMemoryTest

Raspberry Pi has an ARMv6 700 MHz single-core processor, a VideoCore IV GPU and 512MB of RAM. It uses an SD card for its operating system and data storage. The Raspberry Pi officially supports Raspbian, a lightweight linux OS based on Debian. A Raspberry Pi device has two processors: CPU (Central Processing Unit) and GPU (Graphics Processing Unit). You probably know that CPU is used for calculations and GPU is used graphical tasks, such as playing videos and games. The memory of your device is shared between these two processors. By default, 64MB of RAM is allocated for the GPU. If you use your Raspberry Pi for graphics-intensive work, you should increase the amount of RAM allocated to GPU to improve the performance. You can change the amount of memory available to the GPU in Raspberry Pi configuration file.

Note:

If you are not using graphics, you can decrease the amount of memory allocated for the GPU. This can be useful in situations when you are using your Raspberry Pi as a server and GUI is not needed.

If you experience memory contention in Raspberry Pi, you can use the RPiMemoryTest test to find out whether the memory contention is caused due to insufficient memory allocation between CPU and GPU, since this test reveals the statistics related to the utilization of the main memory and GPU memory of the Raspberry Pi. Using this test, administrators may be proactively alerted to memory resource contention, if any.

Outputs of the Test: One set of results for the Raspberry Pi device is being monitored.