Oracle Linux/Exadata: High rds-ping latency and poor CPU performance due to clocksource change from tsc to hpet
(Doc ID 2661995.1)
Last updated on SEPTEMBER 10, 2021
Applies to:Linux OS - Version Oracle Linux 7.0 and later
Exadata Database Machine X2-8 - Version All Versions and later
Information in this document applies to any platform.
- poor DB performance
- high rds-ping latency from compute node to cell node
- high CPU usage
Clocksource was changed from default of "tsc" to "hpet". To check the Clocksource, view the contents of the current_clocksource as shown :
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