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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ ÄÄÇ»ÆÃÀÇ ½ÇÁ¦ ³í¹®Áö (KIISE Transactions on Computing Practices)

Á¤º¸°úÇÐȸ ÄÄÇ»ÆÃÀÇ ½ÇÁ¦ ³í¹®Áö (KIISE Transactions on Computing Practices)

Current Result Document : 7 / 61 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) NVMe SSD ±â¹Ý ½Ã½ºÅÛ¿¡¼­ Å¥ ±¸¼º¿¡ µû¸¥ I/O ¼º´É ºÐ¼®
¿µ¹®Á¦¸ñ(English Title) I/O Performance Analyses for Queue Configuration in NVMe SSD-Based Systems
ÀúÀÚ(Author) ¼Û¿ëÁÖ   ¾ö¿µÀÍ   Yongju Song   Young Ik Eom  
¿ø¹®¼ö·Ïó(Citation) VOL 26 NO. 01 PP. 0032 ~ 0037 (2020. 01)
Çѱ۳»¿ë
(Korean Abstract)
ÃÖ±Ù ÀúÀåÀåÄ¡ÀÇ I/O ¼º´ÉÀÌ Å©°Ô ¹ßÀüÇϸ鼭 À̸¦ È°¿ëÇϱâ À§ÇÑ ¸ÖƼ Å¥ ºí·Ï °èÃþ ¹× NVMe µð¹ÙÀ̽º µå¶óÀ̹ö °èÃþÀÌ Á¦¾ÈµÇ¾ú´Ù. ¸ÖƼ Å¥ ºí·Ï °èÃþÀº µÎ °³ÀÇ °èÃþÀ¸·Î ±¸¼ºµÇ¸ç °¢ °èÃþÀº ¸ÖƼ Å¥ ±¸Á¶·Î ÀÌ·ç¾îÁø´Ù. ù ¹ø°·Î ¼ÒÇÁÆ®¿þ¾î Å¥´Â I/O ¿äûÀ» º´ÇÕ ¹× Àç¹èÄ¡ÇÏ´Â ¿ªÇÒÀ» ¼öÇàÇÑ´Ù. µÑ°·Î Çϵå¿þ¾î Å¥´Â µð¹ÙÀ̽º µå¶óÀ̹ö¿Í ¿¬°áµÇ¾î I/O ¿äûÀ» Àü´ÞÇÏ´Â ¿ªÇÒÀ» ¼öÇàÇÑ´Ù. NVMe µð¹ÙÀ̽º µå¶óÀ̹ö ¶ÇÇÑ ´Ù¼öÀÇ Å¥·Î ±¸¼ºµÇ¾î ³ôÀº È®À强°ú ¼º´ÉÀ» º¸ÀåÇÑ´Ù. ÇÑÆí, ¼ÒÇÁÆ®¿þ¾î Å¥´Â CPU ÄÚ¾îÀÇ ¼ö¸¸Å­ »ý¼ºµÇ´Â ¹Ý¸é Çϵå¿þ¾î Å¥´Â ÀúÀåÀåÄ¡°¡ Áö¿øÇØÁÙ ¼ö ÀÖ´Â ¸¸Å­¸¸ »ý¼ºÀÌ °¡´ÉÇÏ´Ù´Â Á¦¾àÀÌ Á¸ÀçÇÑ´Ù. º» ³í¹®¿¡¼­´Â ¼ÒÇÁÆ®¿þ¾î/Çϵå¿þ¾î Å¥ÀÇ ºñÀ²À» º¯°æÇØ°¡¸ç I/O ó¸® ¼º´ÉÀ» ÃøÁ¤ ¹× ºÐ¼®ÇØ º¸¾Ò´Ù. ½ÇÇè °á°ú, ¼ÒÇÁÆ®¿þ¾î Å¥¿Í Çϵå¿þ¾î Å¥ÀÇ ¼ö¸¦ µ¿ÀÏÇÏ°Ô ¼³Á¤ÇßÀ» ¶§ ´ëºñ 8:1ÀÇ ºñÀ²·Î ±¸¼ºÇÑ °æ¿ì, I/O ÀÀ´ä½Ã°£ÀÌ 1.92¹è ¼öÁرîÁö ±æ¾îÁö´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù.
¿µ¹®³»¿ë
(English Abstract)
Recently, the performance of state-of-the-art storage devices has been increased considerably and, with this trend, the multi-queue block layer and NVMe device driver have been proposed. The multi-queue block layer is composed of two levels of queues and each level can contain multiple queues. Firstly, software queues can merge and schedule I/O requests. Secondly, hardware queues are mapped on the underlying device driver and deliver I/O requests to the storage devices. The NVMe device driver also offers multiple queues for scalability and high performance. Software queues can be provided up to the number of CPU cores on the machine, whereas the number of hardware queues depend on storage capability. In this paper, we analyze the I/O performance by varying the ratio between the number of software queues and that of the hardware queues. Experimental results show that the I/O latency increases by up to 1.92 times when the ratio between the two types of queues is set to 8:1, compared with the case of ratio 1:1.
Å°¿öµå(Keyword) ¸ÖƼ Å¥ ºí·Ï °èÃþ   NVM Express µð¹ÙÀ̽º µå¶óÀ̹ö   ¶ô °æÀï   È®À强   multi-queue block layer   NVM express device driver   lock contention   scalab  
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