公开(公告)号：US09618996B2

公开(公告)日：2017-04-11

申请号：US14482576

申请日：2014-09-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Byung-Gyu Lee ,  Baik-Song An ,  Sung-Ik Jun

IPC: G06F1/32

CPC classification number: G06F1/3206

Abstract: A power capping apparatus including a measurement unit to measure a performance counter value and a used amount of power of the computing system before a power limit value is set. A calculation unit to calculate an energy reference value used in an energy conservation mode using the used amount of power and the performance counter value. A management unit to compare a first used amount of power measured before a power limit value is set with the power limit value when the power limit value is set, and limit the used amount of power to a value below the power limit value when the first used amount of power is greater than the power limit value, wherein the management unit outputs an error message so that a user sets the power limit value in which the energy reference value is within an effective range in the energy conservation mode.