HP ProLiant Server Power Management for Red Hat Enterprise Linux 6.x

Power monitoring with HP iLO 4

HP iLO 4 supports the facility to monitor current power consumption along historical timelines. As shown in Figure 3, HP

iLO 4 displays the current power consumption as well as the peak and average power consumptions for the past 24-hour

and 20-minute time periods.

Figure 3: HP iLO 4 power meter readings for 24-hour and 20-minute time periods

For more information on the HP Integrated Lights-Out (iLO) management technology, see:

www.hp.com/go/iLO

Power capping demonstration with HP iLO 4

This section demonstrates the HP Power Capping functionality by increasing workload on a ProLiant server under the

RHEL 6.1 operating system. Figure 4 displays the iLO configuration setting for a server where the capping threshold is

set to 180 watts. This means the maximum power consumption will be limited at approximately 180 watts. Figure 5

shows that when power capping is not set, the power consumption of a server increases when there is an increase in

workload. You can also see that the maximum power was 227 watts while the minimum power was 209 watts in the

past 5 minutes. The average power was 213 watts. Figure 6 demonstrates that when capping is enabled, the platform

limits the power consumption to 180 watts even with an increase in workload in order to satisfy the power budget set by

the user.