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ÇѱÛÁ¦¸ñ(Korean Title) |
ºñÈֹ߼º ¸Þ¸ð¸®¸¦ ÀÌ¿ëÇÑ ·Î±× ±¸Á¶ ÆÄÀÏ ½Ã½ºÅÛÀÇ ¼º´É Çâ»ó |
¿µ¹®Á¦¸ñ(English Title) |
Improving Log-Structured File System Performance by Utilizing Non-Volatile Memory |
ÀúÀÚ(Author) |
°¾ç¿í
ÃÖÁ¾¹«
À̵¿Èñ
³ë»ïÇõ
Yangwook Kang
Jongmoo Choi
Donghee Lee
Sam H. Noh
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¿ø¹®¼ö·Ïó(Citation) |
VOL 14 NO. 05 PP. 0537 ~ 0541 (2008. 07) |
Çѱ۳»¿ë (Korean Abstract) |
·Î±× ±¸Á¶ ÆÄÀÏ ½Ã½ºÅÛ(Log-Structured File System, LFS)Àº º¯°æµÈ µ¥ÀÌŸ¸¦ ¸Þ¸ð¸®¿¡ ÃæºÐÈ÷ ¸ð¾Æ¼ Çѹø¿¡ ¼øÂ÷ ¾²±â·Î µð½ºÅ©¿¡ ±â·ÏÇÔÀ¸·Î½á ³ôÀº ¾²±â ¼º´ÉÀ» ½ÇÇöÇÑ ÆÄÀÏ ½Ã½ºÅÛÀÌ´Ù. ±×·¯³ª ½ÇÁ¦ ½Ã½ºÅÛ¿¡¼´Â ¿©ÀüÈ÷ µð½ºÅ©¿Í ¸Þ¸ð¸® »óÀÇ ÀÏ°ü¼ºÀ» À§Çؼ µ¿±âÈ°¡ ¹ß»ýÇÏ¸ç º¯°æµÈ µ¥ÀÌŸ¸¦ ÃæºÐÈ÷ ¸Þ¸ð¸®¿¡ ¸ðÀ¸Áö ¸øÇÑ Ã¤ µð½ºÅ©·Î ¾²±â°¡ ¹ß»ýÇÏ´Â ¸ð½ÀÀ» º¸ÀδÙ. ÀÚÁÖ ¹ß»ýµÇ´Â ¾²±â´Â Ŭ¸®³ÊÀÇ ¿À¹öÇìµå¸¦ Áõ°¡½ÃÅ°°í, ´õ ¸¹Àº ¸ÞŸµ¥ÀÌŸ¸¦ ±â·ÏÇÏ°Ô ÇÑ´Ù. º» ¿¬±¸¿¡¼´Â ºñÈֹ߼º ¸Þ¸ð¸®¸¦ ÀÌ¿ëÇؼ µ¿±âȸ¦ ¾ø¾Ö°í, ÀÛÀº ´ÜÀ§ÀÇ ¾²±â¸¦ È¿°úÀûÀ¸·Î È°¿ëÇϵµ·Ï LFS¿Í ¿î¿µÃ¼Á¦ÀÇ °ü·ÃµÈ ¼ºê ½Ã½ºÅÛµéÀ» º¯°æÇÏ¿´´Ù. À̸¦ ÅëÇÏ¿© DRAM¸¸ ÀÖ´Â LFS¿¡ ºñÇؼ 256MÀÇ NVRAMÀ» °¡Áø ½Ã½ºÅÛ¿¡¼ ¾à 2.5¹èÀÇ ¼º´É Çâ»óÀ» º¸¿´´Ù. |
¿µ¹®³»¿ë (English Abstract) |
Log-Structured File System(LFS) is a disk based file system that is optimized for improving the write performance. LFS gathers dirty data in memory as long as possible, and flushes all dirty data sequentially at once. In a real system, however, maintaining dirty data in memory should be flushed into a disk to meet file system consistency issues even if more memory is still available. This synchronizations increase the cleaner overhead of LFS and make LFS to write down more metadata into a disk. In this paper, by adapting Non-volatile RAM(NVRAM) we modifies LFS and virtual memory subsystem to guarantee that LFS could gather enough dirty data in the memory and reduce small disk writes. By doing so, we improves the performance of LFS by around 2.5 times than the original LFS.
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Å°¿öµå(Keyword) |
·Î±× ±¸Á¶ ÆÄÀÏ ½Ã½ºÅÛ
ºñÈֹ߼º ·¥
¾²±â ij½Ã
Log-Structured File System
Non-Volatile RAM
Writ
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