Routine based OS-aware microprocessor resource adaptation for run-time operating system power saving

Abstract

The increasingly constrained power budget of today's microprocessor has resulted in a situation where power savings of all components in a system have to be taken into consideration. Operating System (OS) is a major power consumer in many modern applications execution. This paper advocates a routine based OS-aware microprocessor resource adaptation mechanism targeting run-time OS power savings. Simulation results show that compared with the existing sampling-based adaptation schemes, this novel methodology yields more attractive power and performance trade-off on the OS execution. To our knowledge, this paper is the first step to address the power saving issue of the OS itself, an increasingly important area that has been largely overlooked in the previous studies.

Tera-Op Reliable Intelligently Adaptive Processing System (TRIPS)

“…For example in jess, a Java expert system shell based on the NASA CLIPS expert system shell, we found variation in processor and memory system demands of up to a factor of three. We also found and examined multiple methods of exploiting these variances in conventional processor architectures to reduce power consumption [16]. We first examined on-line monitoring techniques that observe the recent resource demands and turn on or off more execution units as necessary.…”