CAJ | 학술논문

针对固态硬盘( SSD)存储系统在高并发访问时出现的I/O路径局部拥塞效应，设计并实现了动态拥塞控制调度器。该调度器通过设置动态拥塞阈值，分化处理I/O请求，显著提高了固态硬盘存储系统的系统性能，有效改善了系统I/O路径的局部拥塞效应。实验结果表明，相对于内核NOOP调度器，该调度器使得系统平均响应时间减少20%左右，局部拥塞效应减少90%左右。
침대고태경반( SSD)존저계통재고병발방문시출현적I/O로경국부옹새효응，설계병실현료동태옹새공제조도기。해조도기통과설치동태옹새역치，분화처리I/O청구，현저제고료고태경반존저계통적계통성능，유효개선료계통I/O로경적국부옹새효응。실험결과표명，상대우내핵NOOP조도기，해조도기사득계통평균향응시간감소20%좌우，국부옹새효응감소90%좌우。
The I/O path of Solid State Disk ( SSD) storage system appears local congestion when high concurrent access happens. In response to these imperfection, this paper proposed a DVI/OS ( Dynamic Valve I/O Scheuler) scheduling algorithm which improves the performance of SSD access and decreases the local congestion of the I/O path by setting the dynamic congestion threshold. Compared to the Linux kernel NOOP scheduler, the results show that, the DVI/OS scheduler reduces the average response time of the system about 20%, and decreases the local congestion effect about 90%.