General

The Raspberry Pi 4 is a well priced platform regarding its performance.

CPU	Cortex-A72 @ 1500MHz
Cores	4
RAM	1/2/4/8 GB
USB2.0 Interfaces	2
USB3.0 Interfaces	2
Ethernet	10/100/1000 MBit

Note: For the following benchmark the 4GB version of the Raspberry Pi 4 with Raspbian OS has been used.

Test Setup

Test setup

Additional Settings

Setting	Value	Description
usbcore.autosuspend	-1	Disables USB auto-suspend mode. See Disabling The Auto-Suspend Mode
usbcore.usbfs_memory_mb	256 MB	Increases the kernel memory for USB traffic. See Increasing Kernel memory

Benchmarks

The following tests have been performed using different de-Bayering scenarios to achieve the max. FPS while maintaining 0 lost images. The CPU load during the acquisition is also documented below.

Scenarios that have been tested are listed as follows:

When de-Bayering is carried out on the camera: The camera delivers RGB8 image data to the host system. This setting results in a lower CPU load but a lower frame rate.
When de-Bayering is carried out on the host system: The camera delivers Bayer8 image data to the host system. The Bayer8 image data then get de-Bayered to RGB8 format on the host system. This setting results in a higher frame rate but a higher CPU load as well.
When no de-Bayering is performed: The camera delivers Bayer8 image data to the host system. No de-Bayering is performed. This settings results in a lower CPU load and a higher frame rate. The behavior is identical to monochrome cameras.

Camera	Resolution	Pixel Format	Frame Rate [Frames/s]	Bandwidth [MB/s]	CPU Load
mvBlueFOX3-2032C	2064 x 1544	RGB8 (on camera) → RGB8 (on host)	25.20	240.92	~29%


Camera	Resolution	Pixel Format	Frame Rate [Frames/s]	Bandwidth [MB/s]	CPU Load
mvBlueFOX3-2032C	2064 x 1544	BayerRG8 (on camera) → RGB8 (on host)	40.00	127.47	~84%


Camera	Resolution	Pixel Format	Frame Rate [Frames/s]	Bandwidth [MB/s]	CPU Load
mvBlueFOX3-2032C	2064 x 1544	BayerRG8 (on camera) → BayerRG8/Raw (on host)	110.01	350.58	~45%