Erci Xu
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| title | conference | date |
|---|---|---|
| Break On Through to the Other Side: Pooling Memory Elastically with RamRyder | 20th USENIX Symposium on Operating Systems Design and Implementation (OSDI '26) | 2026-07-13 |
RamRyder is a software-defined elastic memory system that maps guest physical pages to specific DRAM channels (obtained via BIOS/UEFI partitioning and reverse… | ||
| StriaTrace: Efficient Tracing and Diagnosis for Online LLM Inference | 20th USENIX Symposium on Operating Systems Design and Implementation (OSDI '26) | 2026-07-13 |
StriaTrace implements host and device collectors that record only 13 synchronization spans and kernel boundaries plus memory transfers, with a pass-by sampler… | ||
| The Clustering Strikes Back: Building Cost-Effective and High-Performance ANNS at Scale | 20th USENIX Symposium on Operating Systems Design and Implementation (OSDI '26) | 2026-07-13 |
Helmsman replaces memory-heavy HNSW with a clustering-based ANNS that uses SPDK userspace storage, a leveling-learned pruning model to pick how many clusters… | ||
| Come Hell or Still Water: Alleviating Tail Latency in Cloud Block Store | NSDI '26 | 2026-05-04 |
Per-proxy dual-bucket token buckets add a main bucket (refilled every 10 ms) and a check bucket that only steady segments can draw from; hot segments drain the… | ||
| Here, There and Everywhere: The Past, the Present and the Future of Local Storage in... | FAST '26 | 2026-02-24 |
Cloud local storage evolution is traced from Espresso (SPDK user-space poll), which cuts kernel context-switch overhead but wastes CPU (99% of nodes show <60%… | ||
| "Range as a Key" is the Key! Fast and Compact Cloud Block Store Index with RASK | FAST '26 | 2026-02-24 |
RASK is a tree-structured cloud block-store index that natively uses range-as-a-key with adaptive radix tree internals and B-tree cell leaves, a log-structured… | ||
| How Soon is Now? Preloading Images for Virtual Disks with ThinkAhead | FAST '26 | 2026-02-24 |
Trace analysis of ~160,000 image loads finds lazy loading causes 40% of slow I/Os (>1s), so ThinkAhead preloads blocks using score-based block selection… | ||
| MlsDisk: Trusted Block Storage for TEEs Based on Layered Secure Logging | FAST '26 | 2026-02-24 |
MlsDisk implements a layered, log-structured virtual block disk that claims CIFC (confidentiality, integrity, freshness, consistency) for TEEs by decomposing… | ||
| AtomicDisk: A Secure Virtual Disk for TEEs against Eviction Attacks | FAST '25 | 2025-02-25 |
SGX‑PFS uses Merkle hash trees, an in‑enclave cache and a recovery journal but allows privileged hosts to capture transient snapshots during cache eviction… | ||
| Don't Maintain Twice, It's Alright: Merged Metadata Management in Deduplication File... | FAST '25 | 2025-02-25 |
Deduplication metadata causes up to 38% I/O-path overhead; this work merges fingerprint-to-physical and L2P into a single on-disk entry so metadata persists… | ||
| Ransom Access Memories: Achieving Practical Ransomware Protection in Cloud with DeftPunk | 18th USENIX Symposium on Operating Systems Design and Implementation (OSDI '24) | 2024-07-10 |
DeftPunk is a block-level ransomware detection and recovery system for cloud block stores that pairs a two-layer classifier (fast decision tree front end… | ||
| What's the Story in EBS Glory: Evolutions and Lessons in Building Cloud Block Store | 22nd USENIX Conference on File and Storage Technologies (FAST '24) | 2024-02-27 |
Three generations of Alibaba Cloud Block Store evolve from a simple two-layer replica model to an SSD/RSBD plus Pangu backend and finally to a… | ||
| Deploying User-space TCP at Cloud Scale with LUNA | USENIX ATC '23 | 2023-07-10 |
LUNA is a user-space TCP libOS built with DPDK and SR-IOV/flow-steering that runs on a run-to-completion model (batch and inline r2c), a user-space… | ||
| Perseus: A Fail-Slow Detection Framework for Cloud Storage Systems | FAST '23: 21st USENIX Conference on File and Storage Technologies | 2023-02-21 |
Perseus detects fail-slow drives non‑intrusively by modeling latency versus throughput with a light regression model, using outlier removal, an adaptive upper… | ||
| SMRSTORE: A Storage Engine for Cloud Object Storage on HM-SMR Drives | FAST '23: 21st USENIX Conference on File and Storage Technologies | 2023-02-21 |
SMRSTORE is a log-structured user-space engine that writes chunk records directly to zoned HM-SMR drives via zoned block I/O, implements per-zone in-memory… | ||
| NVMe SSD Failures in the Field: the Fail-Stop and the Fail-Slow | USENIX ATC '22 | 2022-07-11 |
Logs from 1.8 million NVMe SSDs at Alibaba drive these claims: infant mortality disappears (failure rates in months one–three are at or below long‑term rates)… | ||
| Max: A Multicore-Accelerated File System for Flash Storage | USENIX ATC '21 | 2021-07-14 |
Max implements a multicore-friendly log-structured file system in the Linux kernel (based on F2FS) and demonstrates concrete speedups: evaluated on a 72-core… | ||
| Concordia: Distributed Shared Memory with In-Network Cache Coherence | FAST '21 | 2021-02-23 |
Concordia implements a DSM that pushes cache coherence into programmable switches, using a hybrid protocol FLOWCC that stores per-block metadata and a… | ||
| Lessons and Actions: What We Learned from 10K SSD-Related Storage System Failures | USENIX ATC '19 | 2019-07-10 |
Study analyzes about 10K RASR failures across ~500k SSDs over three years in Alibaba Cloud and quantifies causes: passive heating from mixed rack placement… | ||
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