Higher CPU Consumption After Kernel Patching (UEK3 to UEK4)

(Doc ID 2232893.1)

Last updated on MARCH 03, 2017

Applies to:

Linux OS - Version Oracle Linux 6.8 with Unbreakable Enterprise Kernel [4.1.12] and later
Linux x86-64

Symptoms

After upgrading the operating system from a UEK3 kernel ( 3.8.13-118.6.1.el6uek.x86_64 ) to a UEK4 kernel ( 4.1.12-61.1.17.el6uek.x86_64 ), processes consume more CPU cycles.

Cause

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