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ÇѱÛÁ¦¸ñ(Korean Title) |
¸ÞŸµ¥ÀÌŸ¸¦ ºñÈֹ߼º ·¥¿¡ À¯ÁöÇÏ´Â Ç÷¡½Ã ÆÄÀϽýºÅÛÀÇ ¼³°è ¹× ±¸Çö |
¿µ¹®Á¦¸ñ(English Title) |
Design and Implementation of the Flash File System that Maintains Metadata in Non-Volatile RAM |
ÀúÀÚ(Author) |
µµÀÎȯ
ÃÖÁ¾¹«
À̵¿Èñ
³ë»ïÇõ
In Hwan Doh
Jongmoo Choi
Donghee Lee
Sam H. Noh
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¿ø¹®¼ö·Ïó(Citation) |
VOL 35 NO. 02 PP. 0094 ~ 0101 (2008. 02) |
Çѱ۳»¿ë (Korean Abstract) |
·¥ÀÇ Æ¯¼º°ú ºñÈֹ߼º ÀúÀå¸ÅüÀÇ Æ¯¼ºÀ» µ¿½Ã¿¡ °¡Áö°í ÀÖ´Â ºñÈֹ߼º ·¥À» ½Ã½ºÅÛ ¼ÒÇÁÆ®¿þ¾î¿¡¼ È¿°úÀûÀ¸·Î È°¿ëÇÑ´Ù¸é Àüü ½Ã½ºÅÛÀÇ ¼º´É Çâ»ó¿¡ Å©°Ô ±â¿©ÇÒ ¼ö ÀÖ´Ù. ºñÈֹ߼º ·¥À» È°¿ëÇÔÀ¸·Î½á ½Ã½ºÅÛ ¼ÒÇÁÆ®¿þ¾îÀÇ ¼º´ÉÀ» Çâ»ó½ÃÅ°°íÀÚ ÇÏ´Â ³ë·Â ÁßÀÇ Çϳª·Î, º» ¿¬±¸¿¡¼´Â ºñÈֹ߼º ·¥À» °í·ÁÇÏ´Â MiNV (Metadata in NVram) ÆÄÀϽýºÅÛÀ» ¼³°èÇÏ°í ±¸ÇöÇÏ¿´´Ù. MiNV ÆÄÀϽýºÅÛÀº ¸ðµç ¸ÞŸµ¥ÀÌŸ¸¦ ºñÈֹ߼º ·¥¿¡ ÀúÀå, °ü¸®ÇÏ°í ÀÏ¹Ý ÆÄÀϵ¥ÀÌŸ´Â ³½µåÇ÷¡½Ã ¸Þ¸ð¸®¿¡ ÀúÀåÇÏ°í °ü¸®ÇÑ´Ù. º» ³í¹®¿¡¼´Â MiNV ÆÄÀϽýºÅÛÀÌ ±âÁ¸ÀÇ Ç÷¡½Ã ¸Þ¸ð¸® ±â¹Ý ÆÄÀϽýºÅÛ°ú ºñ±³Çؼ ¾ó¸¶³ª ³ôÀº ¼º´É Çâ»óÀ» ¾òÀ» ¼ö ÀÖ´ÂÁö¸¦ Á¤·®ÀûÀ¸·Î º¸¿©ÁØ´Ù. ¼º´É Æò°¡ °á°ú, ºñÈֹ߼º ·¥À» È°¿ëÇÏ´Â ÆÄÀϽýºÅÛÀº ±Øµµ·Î ªÀº ¸¶¿îÆ® ½Ã°£¸¸À» ÇÊ¿ä·Î ÇÑ´Ù. ±âÁ¸ÀÇ ´ëÇ¥ÀûÀÎ Ç÷¡½Ã ¸Þ¸ð¸® ÆÄÀϽýºÅÛÀÎ YAFFS¿Í ºñ±³ÇßÀ» ¶§, MiNV ÆÄÀϽýºÅÛÀº µ¿ÀÏÇÑ ¿öÅ©·Îµå¸¦ ó¸®ÇÏ¸é¼ º¸´Ù ÀûÀº Ƚ¼öÀÇ Ç÷¡½Ã ¸Þ¸ð¸®¿¡ ´ëÇÑ ÆäÀÌÁö Àбâ, ¾²±â, ±×¸®°í ºí·Ï ¼Ò°Å ¿¬»êÀ» ¿äûÇÑ´Ù. Ç÷¡½Ã ¸Þ¸ð¸® ¿¬»ê Ƚ¼ö¿¡¼ÀÇ À̵æÀº MiNV ÆÄÀϽýºÅÛÀÇ ¼öÇà¼Óµµ Çâ»ó¿¡ ±×´ë·Î ¹Ý¿µµÇ¾î, ¼öÇà¼Óµµ Ãø¸é¿¡¼ MiNV ÆÄÀϽýºÅÛÀº YAFFSº¸´Ù Æò±Õ 400% Á¤µµÀÇ ¼º´É Çâ»óÀ» º¸ÀδÙ. |
¿µ¹®³»¿ë (English Abstract) |
Non-volatile RAM (NVRAM) is a form of next-generation memory that has both characteristics of nonvolatility and byte addressability each of which can be found in nonvolatile storage and RAM, respectively. The advent of NVRAM may possibly bring about drastic changes to the system software landscape. When NVRAM is efficiently exploited in the system software layer, we expect that the system performance can be significantly improved. In this regards, we attempt to develop a new Flash file system, named MiNVFS (Metadata in NVram File System). MiNVFS maintains all the metadata in NVRAM, while storing all file data in Flash memory. In this paper, we present quantitative experimental results that show how much performance gains can be possible by exploiting NVRAM. Compared to YAFFS, a typical Flash file system, we show that MiNVFS requires only minimal time for mounting. MiNVFS outperforms YAFFS by an average of around 400% in terms of the total execution time for the realistic workloads that we considered. |
Å°¿öµå(Keyword) |
ºñÈֹ߼º ·¥
Ç÷¡½Ã ¸Þ¸ð¸®
ÆÄÀϽýºÅÛ
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Non-Volatile RAM
Flash memory
File system
Metadata
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