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Ç¥ÁØÁ¾·ù | Á¤º¸Åë½Å±â¼úº¸°í¼(TTAR) | ||||||||||||||||
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Ç¥ÁعøÈ£ | TTAR-11.0026 | ±¸ Ç¥ÁعøÈ£ | |||||||||||||||
Á¦°³Á¤ÀÏ | 2012-11-14 | ÃÑ ÆäÀÌÁö | 18 | ||||||||||||||
ÇÑ±Û Ç¥Áظí | FTL žÀç ÀåÄ¡ ³»ºÎ Á¤º¸¿Í ÆÄÀÏ ½Ã½ºÅÛÀÇ ¼º´É °³¼± (±â¼úº¸°í¼) | ||||||||||||||||
¿µ¹® Ç¥Áظí | Internal Information of FTL Devices and Performance Improvement of File System (Technical Report) | ||||||||||||||||
ÇÑ±Û ³»¿ë¿ä¾à | ÇöÀçÀÇ FTL žÀç ÀåÄ¡µéÀº Ç÷¡½Ã º¯È¯ °èÃþÀ» ÅëÇØ »óÀ§ÀÇ ¿î¿µÃ¼Á¦¿¡´Â Çϵåµð½ºÅ©¿Í °°Àº ºí·Ï ÀåÄ¡·Î º¸ÀδÙ. ÀÌ ¶§¹®¿¡ ¿î¿µÃ¼Á¦¿¡¼´Â ÀÌ ÀúÀå ÀåÄ¡°¡ Ç÷¡½Ã ¸Þ¸ð¸®¸¦ »ç¿ëÇÑ´Ù´Â °ÍÀ» ÀÎÁöÇÒ ¼ö ¾ø´Ù. Ç÷¡½Ã ¸Þ¸ð¸®¸¦ »ç¿ëÇÑ´Ù´Â °ÍÀ» ¾Ë ¼ö ¾ø±â ¶§¹®¿¡ ÆÄÀÏ ½Ã½ºÅÛÀÇ ·¹À̾ƿôÀ» FTL žÀç ÀåÄ¡¸¦ ±¸¼ºÇÏ´Â Ç÷¡½Ã ¸Þ¸ð¸®¿¡ ¸Â°Ô Á¤·ÄÀ» ½ÃŰ´Â µîÀÇ ÃÖÀûȸ¦ µµ¸ðÇÒ ¼ö ¾ø´Ù´Â ¹®Á¦Á¡ÀÌ ÀÖ´Ù.
º» ±â¼úº¸°í¼¿¡¼´Â Ç÷¡½Ã ¸Þ¸ð¸®ÀÇ Æ¯¼º, FTL žÀç ÀåÄ¡ÀÇ ±¸¼º¿¡ ´ëÇØ »ìÆìº¸°í »óÀ§ÀÇ ÆÄÀÏ ½Ã½ºÅÛÀÌ È¿À²ÀûÀ¸·Î µ¿ÀÛÇÒ ¼ö ÀÖµµ·Ï FTL žÀç ÀåÄ¡°¡ Á¦°øÇØ¾ß ÇÒ ³»ºÎ Á¤º¸¸¦ Á¦½ÃÇÑ´Ù. |
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¿µ¹® ³»¿ë¿ä¾à |
FTL stands for ¡°Flash Translation Layer¡± and it is software which emulates a block device on top of flash hardware. All FTL devices provide operating system with block I/O access. Due to this, file system can¡¯t recognize that the underlying storage consists of flash memory. Because file system have no information about the physical layout of flash memory based storage, it cannot optimize the layout of file system data, which can lead to I/O performance degradation.
This Technical Report will show characteristics of flash memory, the structure of FTL devices and define internal information of FTL devices open to upper layer. |
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°ü·Ã IPR È®¾à¼ | Á¢¼öµÈ IPR È®¾à¼ ¾øÀ½ | ||||||||||||||||
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