Kernel parameter 'maxcpus ' is not working as expected.

Solution In Progress - Updated -


  • The maxcpus kernel boot parameter is not working as expected because all CPUs are active once system is booted.


  • Red Hat Enterprise Linux 7.
    • systemd-208-20.el7 (or later).
  • Red Hat Enterprise Linux 8.
  • Red Hat Enterprise Linux 9.

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content