High system CPU utilization

Solution Verified - Updated -


  • CPU utilization at 100%
  • System CPU utilization is higher than 60%
  • Load average is up to 800 for a 64 CPU server


  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Oracle Database 11g / 12c
    Or any application which is making intensive use of time system calls
    e.g. clock_gettime, gettimeofday, time
  • clocksource is set to acpi_pm in grub.conf

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In