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Fix 100% System CPU Usage

Summary

If you see your Linux CPU utilization spike to 100% system (kernel) on all cores, you may be running into a "Transparent Hugepage" issue. Just execute the following as root to disable the problematic, optional feature: echo never > /sys/kernel/mm/transparent_hugepage/defrag

Details

This feature of the Linux kernel is widely reported to have issues with 3.6 kernels. It is especially noticeable when running Java code that does large disk reads or writes.
Last modified on 30 Jul 2015 by AO

Copyright © 2016 Andrew Oliver