Jetson stats shows only 1 and 2 CPUs

Why do I only see 1 and 2 CPUs on my Jetson. It shows me Jetson stats.

Do you see an “isolcpus=...” entry from “cat /proc/cmdline”? If so, then it just means those cores were set for use only when explicitly asked for. If this is the case, then go to your “/boot/extlinux/extlinux.conf” file, look for the “APPEND” key/value pair, and at the very end of the line (with a single space character delimiter), add:
isolcpus=

The kernel will use the last occurrence of most parameters, and if there is an earlier isolcpus= entry, then the new entry will be the one enforced (and naming no cores for isolation means none will be isolated).

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Thanks, this is a very detailed explanation. Thank you.
I also solved the described problem by simply using the command for the jupiter console
sudo nvpmodel -m0

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