Chapter 7. Hardware management 189
Similar to power capping, power saving can be set at chassis or node level. The
following four modes can be selected:
Disabled (default static maximum performance mode): The system runs at full
speed (no throttling), regardless of the workload.
Mode 1 (static minimum power): The system runs in a throttling state
regardless of the workload. The throttling state is the lowest frequency
P-state.
Mode 2 (dynamic favor performance): The system adjusts throttling levels that
are based on workload, attempting to favor performance over power savings.
Mode 3 (dynamic favor power): The system adjusts the throttling levels that
are based on workload attempting to favor power savings over performance.
Voltage Overview tab
As shown in Figure 7-22, the Voltage Overview tab displays the actual FPC 12 V,
3.3 V, 5 V, and battery voltage information. If a critical threshold is reached, error
log is asserted.
Figure 7-22 Voltage overview
Power Restore Policy tab
The Power Restore Policy tab displays and the user can set the restore policy for
specific nodes. The FPC module remembers nodes that are already powered on
and have power restore policy enabled. When AC is abruptly lost, it automatically
turns on the nodes when AC is recovered.
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