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Power Executive Power Measurement

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DJenkins
Acclaimed Contributor

Power Executive Power Measurement

What is the HW interface/bus/architecture that Power Executive uses to sample and report power consumption.
5 REPLIES
Oleg Koroz
Regular Collector

Re: Power Executive Power Measurement

what product you talking about and what is Power Executive ?
DJenkins
Acclaimed Contributor

Re: Power Executive Power Measurement

Sorry. I meant Power Regulator - I was looking at competitive offerings and incorrectly submitted the question about Executive.

Re: Power Executive Power Measurement

iLO will retrieve the Processor p-state information needed for power regulator feature from system ROM via shared memory.
DJenkins
Acclaimed Contributor

Re: Power Executive Power Measurement

Thanks. I am looking for information on what specific hardware and sw interface allows power to be measured. Is the hw on the baseboard? Power supply?
acartes
Honored Contributor

Re: Power Executive Power Measurement

Power Regulator for ProLiant is available in many current ProLiant systems (check the system for specifics):

FYI, there is a whitepaper titled "Power Regulator for ProLiant Servers" here:
http://h18013.www1.hp.com/products/servers/technology/whitepapers/datacenter.html

"Power Executive Power Management" is an IBM term, I believe. I assume you are referring to the HP ProLiant power regulator technology. There are a few dimensions to this:

I) Configuration: This allows you to configure how the system will govern processor power states. It can depend on the OS and the CPU and the hardware.

II) Processor State Monitoring: Allows iLO to periodically poll the system processors p-state and display any changes over time. This requires an iLO license. As systems become idle, they can down-shift to lower p-states, for example.

III) Power Meter Readings. Supported systems include a device in the power subsystem that monitors input power. An instantaneous reading is available under the Power tab of the System Information page of supported iLO 2 systems. This information is relayed to iLO where it is accumulated and graphed. The data has been calibrated and adjusted (read: look-up-table) to accurately measure power inflow as compared to an external in-line power monitor. Graphing requires an iLO license.

IV) Blades: Blade servers have a separate enclosure management processor that is responsible for tracking power consumption within a topology.
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