Method for system power management and computing system thereof

A computing system comprising:

• a plurality of power-supplying units respectively providing electricity;
• wherein each of the power-supplying units includes an individual maximum power output to be added up to a maximum sum of the power outputs, and each of the power-supplying units is arranged to return an individual real-time power output, and the individual real-time power outputs of the power-supplying units are added up to a sum of the real-time power outputs;
• a plurality of computing nodes respectively equipped with data processing function and respectively obtaining the electricity from the power-supplying units, wherein each of the computing nodes is arranged to return a real-time power consumption to be added up as a sum of real-time power consumptions;
• at least one auxiliary unit, obtaining the electricity from the power-supplying units, and including a real-time auxiliary power consumption and a maximum auxiliary power consumption;
• and
• a chassis management control, connected to and controlling the power-supplying units and computing nodes to obtain the maximum sum of the power outputs, the sum of real-time power outputs, and the sum of the real-time power consumptions;
• wherein the chassis management control applies a difference between the sum of the real-time power outputs and the sum of the real-time power consumptions as the real-time auxiliary power consumption, and continuously updating the maximum auxiliary power consumption according the variation of the real-time auxiliary power consumption;
• wherein the chassis management control records a first real-time auxiliary power consumption of the auxiliary unit as the maximum auxiliary power consumption and continuously obtains a second real-time auxiliary power consumption of the auxiliary unit, and the chassis management control compares the second real-time auxiliary power consumption with the maximum auxiliary power consumption;
• when the second real-time auxiliary power consumption is larger than the maximum auxiliary power consumption, the chassis management control replaces the maximum auxiliary power consumption by the second real-time auxiliary power consumption;
• wherein when the chassis management control detects that one of the power-supplying units is malfunctioned, the chassis management control renews the maximum sum of the power outputs of the other power-supplying units, as a first sum upper limit of the node power consumptions of the computing nodes;
• and cutting down the power consumption of at least one of the computing nodes to a first node power consumption upper limit according to the first sum upper limit of the node power consumptions;
• wherein after cutting down the power consumption of at least one of the computing nodes to a first node power consumption upper limit, the chassis management control obtains the maximum auxiliary power consumption within a designated time period;
• after the designated time period passes, the chassis management control determines whether the maximum auxiliary power consumption within the designated time period is smaller than the maximum auxiliary power consumption before the time period;
• and
• if yes, the chassis management control obtains a second sum upper limit of the node power consumptions according to the maximum auxiliary power consumption within the designated time period and adjusts the power consumption of the at least one of the computing node to a second node power consumption upper limit according to the second sum upper limit of the node power consumptions.