Core power limit notification messages flooding the logs

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Environment

SUSE Linux Enterprise Server 11 Service Pack 3 (SLES 11 SP3)

Situation

The log contains multiple entries such as:

CPU1: Core power limit notification (total events = 1)
CPU7: Package power limit notification (total events = 1)
CPU2: Core power limit normal

Resolution

These messages can be safely ignored.

However, if their presence is undesirable, they can be prevented by updating to
kernel-3.0.101-0.40.1 or later and using the boot parameter 'int_pln_disable'

Cause

Power Limit Notification is a feature that was added to the Sandy Bridge processors from Intel. The notification does not indicate a problem.

The occurrence of these messages is routine power limit notification is routine, and the system does not need to be reporting the messages. They can be ignored.

Disclaimer

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