For performance evaluation, I need to cut down memory bandwidth (current is 137GB/s). Is there any command (e.g. to cut off one channel) or is it possible to modify memory controller driver?
Try to set the “/sys/kernel/debug/bpmp/debug/clk/emc/rate”
echo 1 > /sys/kernel/debug/bpmp/debug/clk/emc/mrq_rate_locked
echo xxx > /sys/kernel/debug/bpmp/debug/clk/emc/rate
It works! Thank you so much