Managing power provisioning in distributed computing

One or more computer-readable storage media storing information to enable a computing device to perform a process, the process comprising:

• receiving a policy defining power consumption limits for computing devices;
• receiving measurements of power consumption for the computing devices;
• determining from that the measurements for one of the computing devices exceed, or contribute to the exceeding of, a power consumption limit in the policy;
• and
• in response to the determining, causing a decrease in power consumption by one of the computing devices, where the one of the computing devices is not the same device as the computing device that is performing the process.

A method performed by one or more computers to manage power consumption in a plurality of computers, the method comprising:

• repeatedly evaluating power consumption of pluralities of computers such that any given plurality of computers is evaluated by aggregating indicia of power consumption of the individual computers in the given plurality, where the evaluating identifies pluralities of computers that are over-consuming power and identifies pluralities of computers that are under-consuming power;
• and
• responding to a first plurality of computers having been identified as over-consuming power by transmitting first messages to some computers in the first plurality of computers to instruct the some computers to lower their computational workload;
• and
• further responding to the first plurality of computers having been identified as over-consuming power by transmitting second messages to other computers in a second plurality of computers identified as under-consuming power, the second messages instructing the other computers to increase their computation workload.