Title :
Effective I/O Processing with Exception-Less System Calls for Low-Latency Devices
Author :
Motoharu Nakajima;Shuichi Oikawa
Author_Institution :
Dept. of Comput. Sci., Univ. of Tsukuba, Tsukuba, Japan
Abstract :
Traditional media such as hard disk and NAND flash are low latency storage devices. I/Os from and to such devices are completed asynchronously via interrupts in most cases. However, introduction of ultra-low latency devices using next-generation non-volatile memory changes the appropriate way to complete I/O requests. Therefore, it is an awaiting solution to make better way to complete I/O requests for low-latency devices. We propose the novel approach to completes I/O requests effectively with exception-less system calls, which do not require software interrupts in issuing system calls. We implemented this approach, and evaluated the effect.
Keywords :
"Instruction sets","Performance evaluation","Kernel","Hardware","Pollution"
Conference_Titel :
Computing and Networking (CANDAR), 2015 Third International Symposium on
Electronic_ISBN :
2379-1896
DOI :
10.1109/CANDAR.2015.91