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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) ¾Èµå·ÎÀ̵å CPU °Å¹ö³ÊÀÇ Àü·Â ¼Òºñ ¹× ½Ç½Ã°£ ¼º´É Æò°¡
¿µ¹®Á¦¸ñ(English Title) Evaluating Power Consumption and Real-time Performance of Android CPU Governors
ÀúÀÚ(Author) Ź¼º¿ì   Sungwoo Tak  
¿ø¹®¼ö·Ïó(Citation) VOL 20 NO. 12 PP. 2401 ~ 2409 (2016. 12)
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(Korean Abstract)
¾Èµå·ÎÀ̵å CPU °Å¹ö³Ê´Â CPU ÁÖÆļö¸¦ ³·Ãß¾î CPU °ø±Þ Àü¾ÐÀ» °¨¼Ò½ÃÅ°´Â DVFS (Dynamic Voltage Frequency Scaling) ±â¹Ý Àü·Â °ü¸® ±â¹ýÀ» »ç¿ëÇÑ´Ù. ±×·¯³ª CPU ÁÖÆļöÀÇ °¨¼Ò´Â ŽºÅ©ÀÇ ½ÇÇà ¼Óµµ Áö¿¬À» À¯¹ßÇÑ´Ù. ÀÌ·Î ÀÎÇØ Å½ºÅ©ÀÇ ÀÀ´ä ½Ã°£ ¹× ¸¶°¨ ½ÃÇÑ ÃÊ°úÀ²ÀÌ Áõ°¡ÇÏ¿© ŽºÅ©°¡ Á¦°øÇÏ´Â ¼­ºñ½ºÀÇ Ç°Áú Ç϶ôÀÌ ¹ß»ýÇÑ´Ù. ÀÌ¿¡ º» ³í¹®¿¡¼­´Â ´Ù¾çÇÑ ¾Èµå·ÎÀ̵å CPU °Å¹ö³ÊµéÀ» Àü·Â ¼Òºñ¿Í ŽºÅ©ÀÇ ÀÀ´ä¼º ¹× ¸¶°¨ ½ÃÇÑ Ãø¸é¿¡¼­ ºÐ¼®ÇÏ¿´´Ù.
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(English Abstract)
Android CPU governors exploit the DVFS (Dynamic Voltage Frequency Scaling) technique. The DVFS is a power management technique where the CPU operating frequency is decreased to allow a corresponding reduction in the CPU supply voltage. The power consumed by a CPU is approximately proportional to the square of the CPU supply voltage. Therefore, lower CPU operating frequency allows the CPU supply voltage to be lowered. This helps to reduce the CPU power consumption. However, lower CPU operating frequency increases a task¡¯s execution time. Such an increase in the task¡¯s execution time makes the task¡¯s response time longer and makes the task¡¯s deadline miss occur. This finally leads to degrading the quality of service provided by the task. In this paper, we evaluated the performance of Android CPU governors in terms of the power consumption, tasks¡®s response time and deadline miss ratio.
Å°¿öµå(Keyword) ¾Èµå·ÎÀÌµå °Å¹ö³Ê   ÀúÀü·Â   ½Ç½Ã°£   µ¿Àû Àü¾Ð ÁÖÆļö Á¶Àý   Android governor   Low-power   Real-time   Dynamic voltage frequency scaling  
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