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ÇѱÛÁ¦¸ñ(Korean Title) |
ÀúÀü·Â°ú ÀÔÃâ·Â ¼º´ÉÀÌ Çâ»óµÈ n-ºí·Ï ¼±¹ÝÀÔ ±â¹ÝÀÇ ÇÏÀ̺긮µå Çϵåµð½ºÅ© ÀÔÃâ·Â ½Ã½ºÅÛ ¼³°è ¹× ±¸Çö |
¿µ¹®Á¦¸ñ(English Title) |
Design and Implementation of Hybrid Hard Disk I/O System based on n-Block Prefetching for Low Power Consumption and High I/O Performance |
ÀúÀÚ(Author) |
¾çÁؽÄ
°í¿µ¿í
ÀÌÂù±Ù
±è´öȯ
Junsik Yang
Youngwook Go
Changun Lee
Deokhwan Kim
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¿ø¹®¼ö·Ïó(Citation) |
VOL 36 NO. 06 PP. 0451 ~ 0462 (2009. 12) |
Çѱ۳»¿ë (Korean Abstract) |
ÃÖ±Ù¿¡ ÇÏµå µð½ºÅ©ÀÇ ³·Àº ÀÔÃâ·Â ó¸® ¼º´ÉÀ» °³¼±ÇÏ´Â ¿¬±¸°¡ È°¹ßÇÏ°Ô ÁøÇà ÁßÀÌ´Ù. Çϵå¿þ¾î ¿¬±¸´Â ÁÁÀº ¼º°ú¸¦ º¸ÀÌ°í ÀÖÁö¸¸ ½Ã½ºÅÛÀÇ ÀÔÃâ·Â ¼º´ÉÇâ»óÀ» Áö¿øÇØ¾ß ÇÒ ½Ã½ºÅÛ ¼ÒÇÁÆ®¿þ¾î ±â¼ú ¹ßÀüÀÌ ¹ÌÁøÇÏ¿© Çϵå¿þ¾î ¼º´ÉÀ» ÃÖ´ë·Î ¹ßÈÖÇÏÁö ¸øÇÏ°í ÀÖ´Â »óȲÀÌ´Ù. º» ³í¹®¿¡¼´Â n-ºí·ÏÀ» Ç÷¡½Ã ¸Þ¸ð¸®·Î ¼±¹ÝÀÔÇÏ´Â »õ·Î¿î ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÑ ¹æ¹ýÀº ¼¼ ´Ü°è·Î ±¸¼ºµÈ´Ù: (1) ºí·Ï ´ÜÀ§ Àб⠿äûÀÇ ÆÐÅÏÀ» ºÐ¼®ÇÏ¿© n-ºí·Ï´ÜÀ§·Î Ç÷¡½Ã ¸Þ¸ð¸®¿¡ ¼±¹ÝÀÔÇÑ´Ù; (2) ÀÔÃâ·Â ¿äû ½Ã¿¡ ±× ºí·ÏÀÇÀ§Ä¡¸¦ ÆÇ´ÜÇÏ¿© ÀÔÃâ·Â ¼ºñ½º¸¦ Á¦°øÇÑ´Ù; (3) ºí·Ï ±³Ã¼ Á¤Ã¥¿¡ µû¶ó n-ºí·ÏÀ» ±³Ã¼ÇÑ´Ù. ÀÌ ¹æ¹ýÀ» ÅëÇØ Çϵåµð½ºÅ©ÀÇ ´ë±â½Ã°£À» ÁÙÀÌ°í Àü·Â »ç¿ëÀ» ÃÖÀûÈ ÇÒ ¼ö ÀÖ´Ù. ½ÇÇèÀ» ÅëÇØ Á¦¾ÈÇÑ µ¿Àû n-ºí·Ï ¹æ¹ýÀÌ ±âÁ¸ÀÇ AMP(Adaptive multistream prefetching) ¹æ¹ý°ú ºñ±³ÇÏ¿© 9.05%ÀÇ Æò±ÕÀÀ´ä½Ã°£À» °³¼±ÇÏ°í Æò±ÕÀü·Â¼Ò¸ð¸¦ 11.11% °¨¼Ò½ÃÅ´À» È®ÀÎÇÏ¿´´Ù. |
¿µ¹®³»¿ë (English Abstract) |
Recently, there are many active studies to enhance low I/O performance of hard disk device. The studies on the hardware make good progress whereas those of the system software to enhance I/O performance may not support the hardware performance due to its poor progress. In this paper, we propose a new method of prefetching n-blocks into the flash memory. The proposed method consists of three steps: (1)analyzing the pattern of read requests in block units; (2)determining the number of blocks prefetched to flash memory; (3)replacing blocks according to block replacement policy. The proposed method can reduce the latency time of hard disk and optimize the power consumption of the computer system. Experimental results show that the proposed dynamic n-block method provides better average response time than that of the existing AMP( Adaptive multistream prefetching) method by 9.05% and reduces the average power consumption than that of the existing AMP method by 11.11. |
Å°¿öµå(Keyword) |
¼±¹ÝÀÔ
ÇÏÀ̺긮µå ÀúÀåÀåÄ¡
ºñÈֹ߼º ¸Þ¸ð¸®
Ç÷¡½Ã ¸Þ¸ð¸®
Prefetching
Hybrid Storage
Non-Volatile memory
Flash memory
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ÆÄÀÏ÷ºÎ |
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