Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have a set of linux boxes, running RHEL 5. All have the same set of packages installed, and the same hardware/BIOS/DRAC versions.I have ~3k ACPI interrupts a second on one CPU, on some, but not all machines. This indicates I can find what's causing the ACPI interrupts (or at least the interrupt types) by poking around /sys/firmware/acpi/interrupts/, but I don't seem to have a /sys/firmware/acpi/interrupts/. Any idea how else I could find the cause of the interrupts?

share|improve this question
up vote 0 down vote accepted

The answer to this is that you cannot with the default RHEL kernel, as ACPI debugging is turned off at compile time.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.