Do you mean init_on_alloc=1 and init_on_free=1? Here [1] is a thread on the options and performance impact. FWIW I use it on all my workstations but these days I am not doing anything that would be greatly impacted by it. I've never tried it on a gaming machine and never tried it on a large memory hypervisor.

I wish there were flags similar to this for the GPU memory. Even something that zero's GPU memory on reboot would be nice. I can always see the previous desktop after a reboot for a brief moment.

[1] - https://patchwork.kernel.org/project/linux-mm/patch/20190617...