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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 :

ÇѱÛÁ¦¸ñ(Korean Title) ºñÈֹ߼º ¹öÆÛ Ä³½Ã¸¦ ÀÌ¿ëÇÑ ÆÄÀÏ ½Ã½ºÅÛÀÇ ÁÖ±âÀûÀÎ flush ¿À¹öÇìµå °³¼±
¿µ¹®Á¦¸ñ(English Title) Improving Periodic Flush Overhead of File Systems Using Non-volatile Buffer Cache
ÀúÀÚ(Author) ÀÌÀºÁö   °­È¿Á¤   °í°Ç   ¹ÝÈ¿°æ   Eunji Lee   Hyojung Kang   Kern Koh   Hyokyung Bahn  
¿ø¹®¼ö·Ïó(Citation) VOL 41 NO. 11 PP. 0878 ~ 0884 (2014. 11)
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(Korean Abstract)
ÆÄÀÏ ½Ã½ºÅÛ ¹öÆÛ Ä³½Ã´Â ´À¸° ½ºÅ丮ÁöÀÇ Á¢±Ù Ƚ¼ö¸¦ ÁÙ¿© ÀÔÃâ·Â ¼º´É Çâ»ó¿¡ ±â¿©ÇÏÁö¸¸, ij½Ã¿¡¼­ ¼öÁ¤µÈ µ¥ÀÌÅ͸¦ ½ºÅ丮Áö¿¡ ¿À·§µ¿¾È ¹Ý¿µÇÏÁö ¾ÊÀ» °æ¿ì Å©·¡½¬ ¹ß»ý ½Ã ÃֽŠµ¥ÀÌÅÍ°¡ À¯½ÇµÇ°Å³ª µ¥ÀÌÅÍÀÇ ÀÏ°ü¼ºÀÌ ±ú¾îÁö´Â ¹®Á¦°¡ ¹ß»ýÇÒ ¼ö ÀÖ´Ù. À̸¦ ¹æÁöÇϱâ À§ÇØ ´ëºÎºÐÀÇ ¿î¿µÃ¼Á¦´Â ¼öÁ¤ µ¥ÀÌÅ͸¦ ÁÖ±âÀûÀ¸·Î ½ºÅ丮Áö¿¡ ¹Ý¿µÇÏ´Â flush µ¥¸óÀ» »ç¿ëÇÑ´Ù. º» ³í¹®Àº ÆÄÀϽýºÅÛÀÇ ¾²±â ¿¬»ê Áß 30-70%°¡ ÁÖ±âÀûÀÎ flush¿¡ ÀÇÇØ ¹ß»ýÇÔÀ» ºÐ¼®ÇÏ°í, À̸¦ ¼Ò·®ÀÇ NVRAM ¹öÆÛ Ä³½Ã¸¦ ÀÌ¿ëÇÏ¿© ÇØ°áÇÏ´Â ±â¹ýÀ» Á¦½ÃÇÑ´Ù. ƯÈ÷, º» ³í¹®Àº µ¨Å¸ ¾²±â ¹× ±×·ì ±â¹Ý ±³Ã¼ ±â¹ýÀ» Á¦¾ÈÇÏ¿© ¼Ò·®ÀÇ NVRAM ¸¸À¸·Î ½ºÅ丮Áö ¾²±â Æ®·¡ÇÈ°ú 󸮷®À» °¢°¢ 44.3%¿Í 23.6% °³¼±ÇÒ ¼ö ÀÖÀ½À» º¸ÀδÙ.
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(English Abstract)
File I/O buffer cache plays an important role in narrowing the wide speed gap between the main memory and the secondary storage. However, data loss or inconsistencies may occur if the system crashes before the data that has been updated in the buffer cache is flushed to storage. Thus, most operating systems adopt a daemon that periodically flushes dirty data to the secondary storage. In this study, we show that periodic flushes account for 30-70% of the total write traffic to storage and remove this inefficiency by implementing a small, non-volatile buffer cache. Specifically, we present space-efficient management techniques, such as delta-write and fragment-grouping, and show that the storage write traffic and throughput can be improved by a margin of 44.2% and 23.6%, respectively, with only a small NVRAM.
Å°¿öµå(Keyword) non-volatile memory   buffer cache   file system   flush   ºñÈֹ߼º¸Þ¸ð¸®   ¹öÆÛ Ä³½Ã   ÆÄÀÏ ½Ã½ºÅÛ   Ç÷¯½¬  
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