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- research-articleAugust 2024
SIndex: An SSD-based Large-scale Indexing with Deterministic Latency for Cloud Block Storage
ICPP '24: Proceedings of the 53rd International Conference on Parallel ProcessingAugust 2024, Pages 1237–1246https://doi.org/10.1145/3673038.3673041The Solid State Drives (SSD) based key-value stores face significant challenges in achieving deterministic access latency. We experimentally observe the long-tail latency is mainly caused by I/O blocking induced by SSD’s internal tasks. In this paper, we ...
- research-articleJanuary 2024
Explorations and Exploitation for Parity-based RAIDs with Ultra-fast SSDs
ACM Transactions on Storage (TOS), Volume 20, Issue 1Article No.: 6, Pages 1–32https://doi.org/10.1145/3627992Following a conventional design principle that pays more fast-CPU-cycles for fewer slow-I/Os, popular software storage architecture Linux Multiple-Disk (MD) for parity-based RAID (e.g., RAID5 and RAID6) assigns one or more centralized worker threads to ...
- research-articleSeptember 2023
PMLDS: An LSM-Tree Direct Managed Storage for Key-Value Stores on Byte-Addressable Devices
ICPP '23: Proceedings of the 52nd International Conference on Parallel ProcessingAugust 2023, Pages 223–232https://doi.org/10.1145/3605573.3605629Existing key-value stores (KVSs) based on log-structured merge-tree (LSM-tree) have been broadly deployed in practice to leverage characteristics of conventional block storage via file system, but lack effective exploitation for emerging byte-addressed ...
- research-articleJanuary 2023
Mlog: Multi-log Write Buffer upon Ultra-fast SSD RAID
ICPP '22: Proceedings of the 51st International Conference on Parallel ProcessingAugust 2022, Article No.: 24, Pages 1–11https://doi.org/10.1145/3545008.3545034Parity-based RAID suffering from partial-stripe write-penalty has to introduce write buffer to fast absorb and merge incoming writes, and then flush them to RAID array in batch. However, we experimentally observe that the popular buffering mechanism as ...
p2KVS: a portable 2-dimensional parallelizing framework to improve scalability of key-value stores on SSDs
EuroSys '22: Proceedings of the Seventeenth European Conference on Computer SystemsMarch 2022, Pages 575–591https://doi.org/10.1145/3492321.3519567Attempts to improve the performance of key-value stores (KVS) by replacing the slow Hard Disk Drives (HDDs) with much faster Solid-State Drives (SSDs) have consistently fallen short of the performance gains implied by the large speed gap between SSDs ...
- research-articleMay 2022
PATS: taming bandwidth contention between persistent and dynamic memories
DATE '22: Proceedings of the 2022 Conference & Exhibition on Design, Automation & Test in EuropeMarch 2022, Pages 885–890Emerging persistent memory (PM) with fast persistence and byte-addressability physically shares the memory channel with DRAM-based main memory. We experimentally uncover that the throughput of application accessing DRAM collapses when multiple threads ...
- research-articleJanuary 2022
Exploration and Exploitation for Buffer-Controlled HDD-Writes for SSD-HDD Hybrid Storage Server
ACM Transactions on Storage (TOS), Volume 18, Issue 1Article No.: 6, Pages 1–29https://doi.org/10.1145/3465410Hybrid storage servers combining solid-state drives (SSDs) and hard-drive disks (HDDs) provide cost-effectiveness and μs-level responsiveness for applications. However, observations from cloud storage system Pangu manifest that HDDs are often ...
- research-articleAugust 2020
SeRW: Adaptively Separating Read and Write upon SSDs of Hybrid Storage Server in Clouds
ICPP '20: Proceedings of the 49th International Conference on Parallel ProcessingAugust 2020, Article No.: 76, Pages 1–11https://doi.org/10.1145/3404397.3404437Nowadays, cloud providers embrace hybrid storage servers to reap both high IO performance of solid-state drives (SSDs) and low-cost of hard disk drives (HDDs). These hybrid storage servers generally employ SSDs as primary storage directly serving ...
- ArticleFebruary 2020
BCW: buffer-controlled writes to HDDs for SSD-HDD hybrid storage server
FAST'20: Proceedings of the 18th USENIX Conference on File and Storage TechnologiesFebruary 2020, Pages 253–266Hybrid Storage servers combining high-speed SSDs and high-capacity HDDs are designed for high cost-effectiveness and provide µs-level responsiveness for applications. Observations from the production hybrid cloud storage system Pangu suggest that HDDs ...
- research-articleNovember 2019
Analysis of and Optimization for Write-dominated Hybrid Storage Nodes in Cloud
SoCC '19: Proceedings of the ACM Symposium on Cloud ComputingNovember 2019, Pages 403–415https://doi.org/10.1145/3357223.3362705Cloud providers like the Alibaba cloud routinely and widely employ hybrid storage nodes composed of solid-state drives (SSDs) and hard disk drives (HDDs), reaping their respective benefits: performance from SSD and capacity from HDD. These hybrid ...