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Sonic: the Next-Gen Local Disks for the Cloud

Cloud local disks are attractive for their affordable price and high performance. The recent advancement in CPUs motivates cloud …
Yanbo Zhou, Erci Xu (Corresponding), Li Zhang, Kapil Karkra, Mariusz Barczak, Wayne Gao, Wojciech Malikowski, Mateusz Kozlowski, Łukasz Łasek, Ruiming Lu, Feng Yang, Lilong Huang, Xiaolu Zhang, Wenrui Li, Jinhu Li, Keqiang Niu, Jiaji Zhu, Jiesheng Wu
Deploying User-space TCP at Cloud Scale with LUNA
The TCP protocol remains to be the main workhorse in today’s large-scale data centers. However, the increasingly demanding performance …
Lingjun Zhu, Yifan Shen, Erci Xu (Corresponding), Bo Shi, Ting Fu, Shu Ma, Shuguang Chen, Zhongyu Wang, Haonan Wu, Zhendan Yang, Xingyu Liao, Wei Lin, Yijun Hou, Rong Liu, Chao Shi, Jiaji Zhu, Jiesheng Wu
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When Database Meets New Storage Devices: Understanding and Exposing Performance Mismatches via Configurations
NVMe SSD hugely boosts the I/O speed, with up to GB/s throughput and microsecond-level latency. Unfortunately, DBMS users can often …
Haochen He, Erci Xu, Shanshan Li, Zhouyang Jia, Si Zheng, Yue Yu, Jun Ma, Xiangke Liao
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Understanding and Detecting On-the-Fly Configuration Bugs (awarded Distinguished Paper)

Software systems introduce an increasing number of configuration options to provide flexibility, and support updating the options on …
Teng Wang, Zhouyang Jia, Shanshan Li, Si Zheng, Yue Yu, Erci Xu, Shaoliang Peng, Xiangke Liao
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DiffForward: On Balancing Forwarding Traffic for Modern Cloud Block Services via Differentiated Forwarding
Modern cloud block service provides cloud users with virtual block disks (VDisks), and it usually relies on a forwarding layer …
Wenzhe Zhu, Yongkun Li, Erci Xu, Fei Li, Yinlong Xu, John C.S. Lui
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Perseus: A Fail-Slow Detection Framework for Cloud Storage Systems (awarded Best Paper)
The newly-emerging ‘fail-slow’ failures plague both software and hardware where the victim components are still functioning …
Ruiming Lu, Erci Xu (co-first), Yiming Zhang, Fengyi Zhu, Zhaosheng Zhu, Mengtian Wang, Zongpeng Zhu, Guangtao Xue, Jiwu Shu, Minglu Li, Jiesheng Wu
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SMRSTORE: A Storage Engine for Cloud Object Storage on HM-SMR Drives

Cloud object storage vendors are in the forever pursuit of better cost efficiency. The emerging Shingled Magnetic Recording (SMR) drive …
Su Zhou, Erci Xu (Corresponding), Hao Wu, Yu Du, Jiacheng Cui, Wanyu Fu, Chang Liu, Yingni Wang, Wenbo Wang, Shouqu Sun, Xianfei Wang, Bo Feng, Biyun Zhu, Xin Tong, Weikang Kong, Linyan Liu, Zhongjie Wu, Jinbo Wu, Qingchao Luo, Jiesheng Wu
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NVMe SSD Failures in the Field: the Fail-Stop and the Fail-Slow
NVMe SSD has become a staple in modern datacenters thanks to its high throughput and ultra-low latency. Despite its popularity, the …
Ruiming Lu, Erci Xu (co-first), Yiming Zhang, Zhaosheng Zhu, Mengtian Wang, Zongpeng Zhu, Guangtao Xue, Minglu Li, Jiesheng Wu
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imDedup: A Lossless Deduplication Scheme to Eliminate Fine-grained Redundancy among Images
Images occupy a large amount of storage in data centers. To cope with the explosive growth of the image storage requirement, image …
Cai Deng, Qi Chen, Xiangyu Zou, Erci Xu, Bo Tang, Wen Xia
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Max: A Multicore-Accelerated File System for Flash Storage
The bandwidth of flash storage has been surging in recent years. Employing multicores to fully unleash its abundant bandwidth becomes a …
Xiaojian Liao, Youyou Lu, Erci Xu, Jiwu Shu
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