Nov 10, 2019 · GPU memory in megabytes, sets the memory split between the CPU and GPU; the CPU gets the remaining memory. The minimum value is 16; the technical maximum value 944 [for the RPi 4]. The default value is 64, values above 512 will not provide increased performance and should not be used.

128/128 - The most RAM GPU can get. Use it when you need a lot of memory for 3D graphic card and hardware accelerated video playback in high resolution. This split is needed for RaspBMC to work properly or to play fullHD video content with omxplayer without problems. 512MB version. New versions of RaspberryPi has 512 MB of RAM.

Jan 7, 2013 · GPU memory usage (amongst many other details) can be seen with /opt/vc/bin/vcdbg reloc stats. Total memory is at the top and free memory is at the bottom. Regarding the optimum CPU/GPU split. It really depends on what you are using your RPi for. If your not playing videos and games (GPU optimized), then give the CPU the most amount of RAM.

Feb 9, 2015 · In the B model, I set the config file to gpu_mem_512=256 in order to get more memory for the graphics. It works fine. If I type the command vcgencmd get_mem gpu it shows gpu=256M as requested. Now , with the Raspberry 2 model, there is …

Jun 20, 2020 · Pi4 has DDR4 RAM that runs WAY faster. Remove all those lines from config and reboot. Also, drop the overclock to CPU to 2100, and the GPU would be best at 750. 800MHz doesnt help much extra, and as you saw 850 or higher goes berzerk. As someone else mentioned, give the GPU more RAM. 512MB is the most you can give it.

Nov 22, 2017 · ANSWER: The 128M of GPU RAM is still being reserved because I have the Raspberry Pi Camera enabled. The camera requires a minimum of 128M of GPU RAM to be held aside in order to function properly. This overrides the gpu_mem=16 setting in the \boot\config.txt file. Going Deeper:

This is useless as you don't seem to run GPU RAM heavy OpenGL applications. You don't need more than 128MB GPU RAM to run videos smoothly as the hardware decoder will use only a fixed amount. So increasing it will not fix your issue. On the other hand you are reducing the RAM for the ARM CPU and therefore forcing it to use the Swapfile.

Aug 29, 2019 · pi@raspberrypi:~$ vcgencmd get_mem gpu gpu=128M Alternatively use raspi-config non-interactively, which uses vcgencmd underneath and pulls out just the number: pi@raspberrypi:~$ sudo raspi-config nonint get_config_var gpu_mem /boot/config.txt 128

where [ram-split] is the amount of RAM to allocate to the CPU. After a reboot the new value will be applied. rpi-update. Hexxeh's rpi-update also supports changing the RAM split, you would run rpi-update [ram-split] where [ram-split] is the amount of RAM you want allocated to the CPU. After a reboot the split will be applied. Ram Selector Script

May 25, 2024 · WRT to what that missing RAM is being used for, try starting up htop, select the MEM% column, then click it again to reverse the listing so you are seeing the processes using the least userspace at the top. If this list doesn't start with a dozen or so things with 0 in the VIRT and RES column, press shift-K to show kernel threads.