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The power measurement is often the average power used while running the benchmark, but other measures of power usage may be employed (e.g. peak power, idle power). For example, the early UNIVAC I computer performed approximately 0.015 operations per watt-second (performing 1,905 operations per second (OPS), while consuming 125 kW).
This power model is the core technique for Joulemeter. Figure 4 in reference [18] shows the block diagram of Joulemeter where System Resource & Power Tracing module reads the full server CPU, disk and power usage. The VM resource tracking module tracks all the work load using hypervisor counters.
Although it is named "power usage effectiveness", it actually measures the energy use of the data centre. [10] The PUE metric has several important benefits. First, the calculation can be repeated over time, allowing a company to view their efficiency changes historically, or during time-limited events like seasonal changes.
[5] [6] The power used by each rack of equipment can be measured at the power distribution unit. Some servers include power tracking hardware so the people running the server farm can measure the power used by each server. [7] The power used by the entire server farm may be reported in terms of power usage effectiveness or data center ...
In computing, energy proportionality is a measure of the relationship between power consumed in a computer system, and the rate at which useful work is done (its utilization, which is one measure of performance). If the overall power consumption is proportional to the computer's utilization, then the machine is said to be energy proportional. [1]
A computer network diagram of client computers communicating with a server computer via the Internet Wikimedia Foundation rackmount servers on racks in a data center The first WWW server is located at CERN with its original sticker that says: "This machine is a server. DO NOT POWER IT DOWN!!" A server is a computer that provides information to ...
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