We quantitatively characterize performance behaviors of a real ultra-low latency (ULL) SSD archive by using a real 800GB Z-SSD prototype, and analyze system-level challenges that the current storage stack exhibits. Specifically, our comprehensive empirical evaluations and studies demonstrate i) diverse performance analyses of the ULL SSD, including a wide range of latency and queue examinations, ii) I/O interference characteristics, which are considered as one of the great performance bottlenecks of modern SSDs, and iii) efficiency and challenge analyses of a polling-based I/O service (newly added into Linux 4.4 kernel) by comparing it with conventional interrupt-based I/O services. In addition to these performance characterizations, we discuss several system implications, which are required to take a full benefit of ULL SSD in the future.
|Publication status||Published - 2018|
|Event||10th USENIX Workshop on Hot Topics in Storage and File Systems, HotStorage 2018, co-located with USENIX ATC 2018 - Boston, United States|
Duration: 2018 Jul 9 → 2018 Jul 10
|Conference||10th USENIX Workshop on Hot Topics in Storage and File Systems, HotStorage 2018, co-located with USENIX ATC 2018|
|Period||18/7/9 → 18/7/10|
Bibliographical noteFunding Information:
The authors thank Samsung’s Jaeheon Jeong (President), Jongyoul Lee (Vice President), Se-Jeong Jang and Joo-Young Hwang for their engineering sample donations and technical support. This paper is mainly supported by Yonsei Future Research Grant (2017-22-0105) and NRF 2016R1C1B2015312. The work is also supported in part by DOE DEAC02-05CH11231, IITP-2018-2017-0-01015, NRF2015M3C4A7065645. S. Koh and C. Lee equally contribute to this work. M. Jung is the corresponding author.
All Science Journal Classification (ASJC) codes
- Hardware and Architecture
- Information Systems
- Computer Networks and Communications