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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ ³í¹®Áö A : ½Ã½ºÅÛ ¹× ÀÌ·Ð

Á¤º¸°úÇÐȸ ³í¹®Áö A : ½Ã½ºÅÛ ¹× ÀÌ·Ð

Current Result Document : 1 / 1

ÇѱÛÁ¦¸ñ(Korean Title) ¿¡³ÊÁö Á¦ÇÑ ½ºÄÉÁ층¿¡¼­ QoS ÀúÇϸ¦ ¸·±â À§ÇÑ ½ºÄÉÁ층 ÆÐÅÏ º¸Á¸ ±â¹ý
¿µ¹®Á¦¸ñ(English Title) A Scheduling Pattern Preservation Scheme for Preventing QoS-Drop under Energy-Constrained Scheduling
ÀúÀÚ(Author) Á¶Á¤¿í   ¼­ÀǼº   Junguk Cho   Euiseong Seo  
¿ø¹®¼ö·Ïó(Citation) VOL 39 NO. 05 PP. 0313 ~ 0324 (2012. 10)
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(Korean Abstract)
¸ð¹ÙÀÏ ±â±â¿¡¼­ »ç¿ëÀÚ ºÒ¸¸ÀÇ °¡Àå Å« ¿ä¼ÒÀÎ ¹èÅ͸® »ç¿ë½Ã°£À» º¸ÀåÇϱâ À§ÇØ ¸¹Àº ¿¬±¸µéÀÌ ÁøÇàµÇ¾î ¿Ô´Ù. ¹èÅ͸® »ç¿ë½Ã°£ º¸ÀåÀ» À§Çؼ­´Â ÀÏÁ¤ ½Ã°£ µ¿¾È ¼ÒºñµÇ´Â ¿¡³ÊÁö¸¦ Á¦ÇÑÇÒ ¼ö ÀÖ´Â ¿¡³ÊÁö Á¦ÇÑ ½ºÄÉÁ층 ±â¹ýÀÌ ÇÊ¿äÇÏ´Ù. ´ëºÎºÐÀÇ ¿¡³ÊÁö Á¦ÇÑ ½ºÄÉÁ층 ±â¹ýÀº ŽºÅ©µéÀÇ ¿¡³ÊÁö ¼Òºñ·®À» ÃßÁ¤ÇÏ¿© »ç¿ëÀÚ°¡ ¿ä±¸ÇÏ´Â »ç¿ë½Ã°£À» ÃæÁ·½Ãų ¼ö ÀÖµµ·Ï ŽºÅ©µéÀÇ ½ºÄÉÁ층À» Á¦ÇÑÇÏ¿© ¿¡³ÊÁö ¼Òºñ·®À» ÀÏÁ¤ ¼öÁØÀ¸·Î ¾ïÁ¦ÇÑ´Ù. ÇÏÁö¸¸, ±âÁ¸ ¿¬±¸µé¿¡¼­ ³Î¸® »ç¿ëµÇ´Â ÀÌ·¯ÇÑ ¿¡³ÊÁö Á¦ÇÑ ½ºÄÉÁ층 ±â¹ýÀº ¸ÖƼ¹Ìµð¾î ¾ÖÇø®ÄÉÀ̼ǵéÀÇ ½ºÄÉÁ층 Áֱ⸦ ºÒ±ÕµîÇÏ°Ô ºÐÆ÷ÇÏ°Ô ÇÏ¿© QoS ÀúÇϸ¦ ÀÏÀ¸Å²´Ù. º» ³í¹®Àº ÀÌ·¯ÇÑ Çö»ó¿¡ ´ëÇÑ ½ÇÇèÀû Áõ°Å¸¦ óÀ½À¸·Î ¹àÈ÷°í, ÀÌ¿¡ ´ëÇÑ ÇØ°áÃ¥À¸·Î ¿¡³ÊÁö Á¦ÇѽºÄÉÁ층 Áß¿¡µµ ¾ÆÀÌµé ½º·¹µå¸¦ ¸ÖƼ¹Ìµð¾î ¾ÖÇø®ÄÉÀ̼ǵé°ú ±³Â÷ ½ÇÇàÇÏ¿© ½ºÄÉÁ층 ÆÐÅÏÀ» À¯ÁöÇÔÀ¸·Î½á ¿¡³ÊÁö Á¦ÇÑ ½ºÄÉÁ층 Áß¿¡µµ QoS¸¦ À¯ÁöÇÒ ¼ö ÀÖ´Â ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÑ ½ºÄÉÁ층 ±â¹ýÀº ±¸±Û ¾Èµå·ÎÀÌµå ½º¸¶Æ®Æù¿¡ žÀçÇÏ¿© ¼º´ÉÀ» Æò°¡ÇÏ¿´´Ù. Æò°¡°á°ú Á¦¾ÈÇÏ´Â ¹æ½ÄÀº ¿¡³ÊÁö ¼Òºñ·®À» Á¦ÇÑÇϸ鼭µµ ½ºÄÉÁ층 ÆÐÅÏÀÇ º¯È­·Î ÀÎÇÑ QoS ÀúÇÏ Çö»óÀ» ¸·À» ¼ö ÀÖÀ½À» È®ÀÎÇÏ¿´´Ù.
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(English Abstract)
Unpredictable battery lifetime arising from multitasking is one of the biggest sources of user dissatisfaction with mobile devices. Many researchers have proposed various resource management schemes for predicting and guaranteeing battery lifetime of mobile devices. The existing battery-lifetime guarantee schemes commonly depend on some forms of energy-constrained schedulers. Energy-constrained schedulers schedule tasks only when the system has sufficient energy to use. Although this approach effectively controls energy usage of tasks, the distorted scheduling pattern from the energy-constrained scheduling significantly affects the QoS of multimedia or interactive applications. This paper experimentally identifies the QoS degradation due to the energy-constrained schedulers, and proposes a QoS preserving energy constrained scheduling scheme that compulsorily schedule idle threads interleaved with tasks to maintain the scheduling pattern. We implement the proposed scheme in a Google Android smart phone and evaluate it. Our evaluation shows that our approach effectively maintain the QoS while restricting energy consumption.
Å°¿öµå(Keyword) Àü·Â °ü¸®   ¹èÅ͸® °ü¸®   ¸ð¹ÙÀÏ ÄÄÇ»Æà  ½ºÄÉÁ층 ¾Ë°í¸®Áò   ¸ÖƼ¹Ìµð¾î   power-aware computing   battery management   scheduling algorithms   multimedia   QoS  
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