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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Current Result Document : 8 / 61 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) ¾Èµå·ÎÀÌµå ½Ã½ºÅÛ¿¡¼­ CPU ¼º´É °£¼·À» ¿ÏÈ­Çϱâ À§ÇÑ µ¥µå¶óÀΠŽºÅ© °ü¸® ±â¹ý
¿µ¹®Á¦¸ñ(English Title) Deadline Task Scheduling for Mitigating the CPU Performance Interference in Android Systems
ÀúÀÚ(Author) ÀÌÁ¤¿õ   ÀÌÅÂÇü   ¾ö¿µÀÍ   Jeongwoong Lee   Taehyung Lee   Young Ik Eom  
¿ø¹®¼ö·Ïó(Citation) VOL 47 NO. 01 PP. 0011 ~ 0018 (2020. 01)
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(Korean Abstract)
¾Èµå·ÎÀÌµå ¸®´ª½º Ä¿³Î¿¡¼­´Â ´ëºÎºÐÀÇ ÀÛ¾÷ÀÌ °øÆòÇÏ°Ô ¼öÇàµÇ±â ¶§¹®¿¡ ½Ã°£ ¹Î°¨¼ºÀÌ ÀÖ´Â ÀÀ¿ëÀÇ ¼öÇà¿¡ Áö¿¬ÀÌ ¹ß»ýÇÒ ¼ö ÀÖ´Ù. ƯÈ÷ ¹Ìµð¾î µ¥ÀÌÅÍ Ã³¸®³ª Áö¹®Àνİú °°Àº »ýü ÀνĿ¡ Áö¿¬ÀÌ ¹ß»ýÇÏ¸é »ç¿ëÀÚÀÇ ºÒÆíÀ» ÃÊ·¡Çϱ⠶§¹®¿¡, ½Ã°£Àû Á¦¾àÀÌ ÀÖ´Â ÀÛ¾÷µéÀ» µ¥µå¶óÀΠŽºÅ©·Î ¼öÇàÇÒ ÇÊ¿ä°¡ ÀÖ´Ù. ±×·¯³ª ÇöÀç ¾Èµå·ÎÀ̵å ȯ°æ¿¡¼­ µ¥µå¶óÀÎ ½ºÄÉÁÙ·¯¸¦ »ç¿ëÇÒ °æ¿ì µÎ °¡Áö ¹®Á¦Á¡ÀÌ ¹ß»ýÇÒ ¼ö ÀÖ´Ù. ù°·Î µ¥µå¶óÀΠŽºÅ©°¡ ¼öÇàµÇ¸é¼­ CPUÀÇ ¼Ò¸ðÀü·ù¸¦ Å©°Ô Áõ°¡½Ãų ¼ö ÀÖÀ¸¸ç, µÑ°·Î µ¥µå¶óÀΠŽºÅ©ÀÇ ³ôÀº ¿ì¼±¼øÀ§·Î ÀÎÇØ ±âÁ¸¿¡ ¼öÇà ÁßÀÌ´ø ÀÏ¹Ý Å½ºÅ©ÀÇ ¼º´ÉÀúÇϸ¦ À¯¹ßÇÒ ¼ö ÀÖ´Ù. º» ³í¹®¿¡¼­´Â ¾Èµå·ÎÀ̵å ȯ°æ¿¡¼­ ÀÏ¹Ý Å½ºÅ©¿¡ ÁÖ´Â ¿µÇâÀ» °¨¼Ò½ÃÅ°¸é¼­ ¼Ò¸ðÀü·ù¸¦ ³ôÀÌÁö ¾Ê°í µ¥µå¶óÀΠŽºÅ©¸¦ ¼öÇàÇÏ´Â ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. ½ÇÇè °á°ú Á¦¾È ±â¹ýÀÌ ±âÁ¸ µ¥µå¶óÀÎ ½ºÄÉÁÙ·¯ ´ëºñ ¾à 10% ÀÇ ¼º´ÉÀ» Çâ»ó½ÃÄ×À¸¸ç, CPU ÁÖÆļö¸¦ È¿°úÀûÀ¸·Î »ç¿ëÇØ ¼Ò¸ðÀü·ù¸¦ Áõ°¡½ÃÅ°Áö ¾ÊÀ½À» È®ÀÎÇÏ¿´´Ù.
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(English Abstract)
In the Android Linux kernel, most of the tasks are expected to run fairly, and so, there can be delays in processing time-sensitive applications. In particular, since the user may feel inconveniences when the delay occurs in media data processing or biometrics processing such as fingerprint recognition, the tasks requiring completion within a given time should be considered as deadline tasks. However, using the deadline scheduler in current Android systems can cause two problems. First, as deadline tasks come to the system and are executed, the CPU energy consumption can be increased. Second, the high priority of the deadline tasks can cause performance degradation of the normal tasks. To mitigate these problems, this paper proposes a method of scheduling deadline tasks on Android systems, which reduces the performance impact on normal tasks, while trying to minimize energy consumption. Our evaluation on the CPU benchmark shows that the proposed method improves the CPU performance by about 10% compared with the conventional deadline scheduler, but does not increase power consumption by effectively utilizing CPU frequency.
Å°¿öµå(Keyword) µ¥µå¶óÀΠŽºÅ©   ¿¡³ÊÁö ÀνĠ  »ç¿ë·® ÀνĠ  µ¥µå¶óÀÎ ½ºÄÉÁÙ¸µ   ½Ç½Ã°£ ½Ã½ºÅÛ   deadline task   energy-aware   capacity-aware   deadline scheduling   real-time system  
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