In this paper

we propose an on-demand mechanism for data cache leakage power management

which manages data cache activities according to the demand of memory accessing instructions.Specifically

this mechanism keeps the whole data array in leakage-saving mode whenever it finds no memory accessing instructions at all;once a load instruction is detected

it employs two data cache access control policies and the dynamic selection scheme to capture the access demand of the load address early in the pipeline.Experimental results demonstrate that the data cache leakage power is reduced by an average of 85.4%.Meanwhile

the performance is increased by 4.41%.Compared to traditional methods

the mechanism proposed in this paper achieves better results in both power and performance.