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Poor Performance When Running Splunk Enterprise on RHEL with Transparent Huge Pages Enabled

Solution Verified - Updated 2018-06-01T00:29:56+00:00 -

Issue

Splunk Enterprise system (indexer) performance degraded significantly after upgrading from RHEL 5 to RHEL 6.
Splunk Enterprise very high load. Iostat seems to indicate system is waiting on I/O with low disk utilization and low over all utilization.
Splunk process (search engine) starts, load average spikes significantly, and %sys increases. Don't seem to be sending/waiting on IO.

Environment

Red Hat Enterprise Linux 5
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7

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