Vram Payloads

kevinF

does anyone know why 5gb vram payloads don't work? I was using orbistoolbox in some games and found out that some games use up to 10gb vram like god of war ragnarok, this is strange, by the way how is linux payload done? Is it not possible to extract vram from games running on ps4orbis and use them on ps4 linux?

noob404

Is this a PS4 Pro? Still that doesn't make sense, since, the total memory on a PS4 Pro is 9GB. There's something that I am definitely missing or not understanding.
As for the 5GB VRAM payload, what I understand is that the VRAM allocation on PS4 Linux is not 100% perfect. So, when you do use 5GB VRAM, it just leaves <3GB RAM for the CPU. The give and take that you would expect on Orbis (for eg.- if it's a GPU-intensive sequence on Orbis, then PS4 might have a way to allocate more to VRAM, taking away some power from the CPU) doesn't work exactly like that on Linux. So, maybe during the boot process, PS4 might be looking for >3GB RAM, and when there's no mechanism to borrow from VRAM (which in this case is hardcoded to be 5GB), it might just be failing.

kevinF

noob404 so I think it's strange what is showing in the orbis toolbox almost 11gb of vram is a lot, I don't know if it's a bug, my ps4 is slim, but if what is showing is true there is still a lot that we don't know about the ps4 yet right? when i run the 5gb payloads the screen turns black and the led turns white, is there a way to know what's going on behind like a debug log?

noob404

kevinF You will have to UART probably.

kevinF

@noob404 maybe it's possible to extract vram values from running games look at this: https://github.com/Ps3itaTeam/ps4-linuxpayloads
in this case it was the gpu clock and not the vram but maybe it's possible what do you think?