Great suggestion! Tried mem=8G. Unfortunately, no joy:As I see it, a possible difference between the 8GB and 16GB models is the D0 stepping of the latter. The new stepping is rumoured to be required for addressing 16GB RAM.
Is it possible something at the driver level adds the equivalent of a bounce buffer?
I'd try mem=8G on the Linux command line to see if that makes any difference. It may not.
Pi5-8GB N04: 2min 8sec (N04)
Pi5-8GB: 2min 20sec (X1001)
Pi5-16GB: 3min 35sec (N04)
Pi5-16GB (w/mem=8G): 3min 41sec (N04)
Statistics: Posted by bls — Thu Jan 16, 2025 12:09 am
