Two cores disabled.

hi there, i was also facing the same issue with my jetson tx2 in my case i have jetpack 4.4 i am using the same set of commands that @dusty_nv has shared , I am trying to set the two denver cores manually to one and i use these commands.
nvidia@nvidia-desktop:~$ sudo su
root@nvidia-desktop:/home/nvidia# echo 1 > /sys/devices/system/cpu/cpu1/online
root@nvidia-desktop:/home/nvidia# echo 1 > /sys/devices/system/cpu/cpu2/online

but after executing them i got same stats showing 2 Denver cores disabled and using 0%

Can please anyone suggest me what to do to use 2 denver cores