A kind of method and device reducing system power dissipation

A kind of method and device reducing system power dissipation

  • CN 104,516,480 B
  • Filed: 12/08/2014
  • Issued: 11/27/2018
  • Est. Priority Date: 12/08/2014
  • Status: Active Grant
First Claim
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1. a kind of method for reducing system power dissipation, which is characterized in that including:

  • Determine that the load factor threshold value of first core of processor, the load factor threshold value include high load rate threshold value and low-load rateThreshold value;

    When the difference of the high load rate threshold value and the low-load rate threshold value is less than or equal to pre-set buffer value, repeatedly calculateThe load factor sample value of first core;

    Calculate the root-mean-square value of the load factor sample value of multiple first core, and using the root-mean-square value as described firstThe load factor of a core;

    The load factor is compared with the load factor threshold value, it is subsequent to open or close first core according to comparison resultCore, wherein the subsequent core of first core is the subsequent all cores of first core, and the mode of each core processing thread is processingA complete thread reprocesses another thread;

    The first subsequent core of core is opened or closed according to comparison result, including:

    If the load factor is higher than the high load rate threshold value, the first subsequent core of core is opened, to avoid multithreading queueProduced delay reduces the operating time of processor peripheral equipment;

    If the load factor is lower than the low-load rate threshold value, the first subsequent core of core is closed.

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