RHEL8.1: A lot of Function Call Interrupts on isolated CPUs

Solution Unverified - Updated -

Issue

The CPUs isolated with isolcpus=<CPUs_list> kernel feature and with other options applied for low-latency environment still receive a lot of Function Call Interrupts.

Environment

  • Red Hat Enterprise Linux 8.1
  • x86_64 arch

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