Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
Å°-¹ë·ù ½ºÅä¾î¿¡¼ÀÇ °í¼º´É I/O 󸮸¦ À§ÇÑ ¸®´ª½º I/O ÀÎÅÍÆäÀ̽º ºÐ¼® |
¿µ¹®Á¦¸ñ(English Title) |
Analyses of Linux I/O Interfaces for High-Performance I/O Operations in Key-Value Stores |
ÀúÀÚ(Author) |
¼Û¿ëÁÖ
¾ö¿µÀÍ
Yongju Song
Young Ik Eom
|
¿ø¹®¼ö·Ïó(Citation) |
VOL 48 NO. 12 PP. 1274 ~ 1280 (2021. 12) |
Çѱ۳»¿ë (Korean Abstract) |
ÃÖ±Ù °í¼º´É ½ºÅ丮Áö¸¦ È°¿ëÇϱâ À§ÇÑ ´Ù¾çÇÑ I/O ÀÎÅÍÆäÀ̽º°¡ ¿¬±¸µÇ¾î ¿ÔÀ¸¸ç, ƯÈ÷, ºñµ¿±â I/O ÀÎÅÍÆäÀ̽º°¡ ÁÖ¸ñÀ» ¹Þ°í ÀÖ´Ù. ÇÏÁö¸¸ ÀÌ´Â µ¿±â I/O ÀÎÅÍÆäÀ̽ºº¸´Ù »ó´ëÀûÀ¸·Î ÀÀ´ä½Ã°£ ³ô°í CPU ÀÚ¿øÀ» ´õ ¸¹ÀÌ »ç¿ëÇÑ´Ù´Â ´ÜÁ¡ÀÌ ÀÖ´Ù. º» ³í¹®¿¡¼´Â °¢ I/O ÀÎÅÍÆäÀ̽ºÀÇ Æ¯¼ºÀ» ºÐ¼®ÇÏ°í, À̸¦ Å°-¹ë·ù ½ºÅä¾î¿¡ Àû¿ëÇÏ¿© ¾îÇø®ÄÉÀÌ¼Ç °èÃþ¿¡¼ÀÇ ¼º´É ¾ç»ó¿¡ ´ëÇØ »ìÆ캻´Ù. ½ÇÇè °á°ú, ºñµ¿±âÀû I/O ÀÎÅÍÆäÀ̽º´Â µ¿±âÀû I/O ÀÎÅÍÆäÀ̽ºº¸´Ù 2.73¹è ´õ ¸¹Àº CPU ÀÚ¿øÀ» »ç¿ëÇÏÁö¸¸, batching I/O Å©±â¿¡ µû¶ó ÃÖ´ë 2.42¹è ³ôÀº IOPS¸¦ º¸¿©ÁÖ¾ú´Ù. ´õºÒ¾î Å°-¹ë·ù ½ºÅä¾î¿¡¼ÀÇ ½ÇÇè °á°ú, Àбâ À§ÁÖÀÇ ¿öÅ©·Îµå¿¡¼ ºñµ¿±âÀû I/O ÀÎÅÍÆäÀ̽º¸¦ »ç¿ëÇÑ °æ¿ì, µ¿±âÀû I/O ÀÎÅÍÆäÀ̽º¸¦ »ç¿ëÇÑ °æ¿ì ´ëºñ ÃÖ´ë 6.60¹è ³ôÀº 󸮷®°ú 61.09% ³·Àº ÀÀ´ä½Ã°£À» º¸ÀÌ´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù. |
¿µ¹®³»¿ë (English Abstract) |
Recently, to utilize high-performance storage devices, various I/O interfaces have been studied. In particular, asynchronous I/O interfaces are now getting attention. However, those asynchronous I/O interfaces have the disadvantage of relatively higher latency and more CPU consumption than synchronous I/O interfaces. In this paper, we first analyze the characteristics of each I/O interface and then apply it to the key-value store to measure the performance at the application layer. The experiments show that the asynchronous I/O interface consumes 2.73¡¿ more CPU resources than the synchronous I/O interface, but delivers up to 2.42¡¿ higher IOPS depending upon the batching I/O size. In addition, experiments on key-value stores show up to 6.60¡¿ higher throughput and 61.09% lower latency when asynchronous I/O interfaces are used in the read-intensive workload. |
Å°¿öµå(Keyword) |
Å°-¹ë·ù ½ºÅä¾î
µ¿±âÀû I/O ó¸® ¹æ½Ä
ºñµ¿±âÀû I/O ó¸® ¹æ½Ä
io_uring ÀÎÅÍÆäÀ̽º
CPU »ç¿ë·®
key-value store
synchronous I/O interface
asynchronous I/O interface
io_uring interface
CPU usage
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