schedulingforreducedcpuenergy-資料下載頁
2024-07-26 17:01本頁面
【正文】 ltages Evaluation: Changing The Inverval Length Q u i c k T i m e ? a n d a d e c o m p r e s s o ra re n e e d e d t o s e e t h i s p i c t u r e . A longer adjustment period results in more savings Evaluation: Average Excess Cycles [1] Q u i c k T i m e ? a n d a d e c o m p r e s s o ra re n e e d e d t o s e e t h i s p i c t u r e . Lower min. voltage = more excess cycles Longer intervals = accumulate more excess cycles Energy savings is function of the interval size Evaluation: Average Excess Cycles [2] Q u i c k T i m e ? a n d a d e c o m p r e s s o ra re n e e d e d t o s e e t h i s p i c t u r e . Discussion amp。 Future Work ? Feedback source other than idle time ? To classify jobs into ? Background, periodic, and foreground ? Schd. Order: periodic, foreground, background ? No Reordering vs. Reordering ? Unless a large job mix, reordering not significant. ? I/O Wait Model: Hard/Soft ? Thinking valid but good to verify Conclusions ? Preliminary Results On CPU Scheduling To Reduce CPU Energy Usage ? Scheduling jobs at different clock rates. ? Trace Driven Simulation ? OPT / FUTURE / PAST ? PAST with a 50ms window ? Volts = Volts: This range provides good savings with moderate penalty ? Power savings up to 50% (), 70% () ? The Tortoise Is More Efficient Than The Hare.
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