Lesson:bypassd enabling fast userspace access to shared ssds da9e5d79
| 제목 | BypassD: Enabling Fast Userspace Access to Shared SSDs |
|---|---|
| 궁금했던 점 | Can unmodified applications access a shared SSD from userspace at near-SPDK latency while retaining protection and files? |
| 해본 것 | BypassD exposes virtual-address access and uses the IOMMU to translate file offsets to LBAs on a shared SSD. |
| 당시 조건 | Venue: ASPLOS. Year: 2024.
Kernel I/O is safe/shareable but slow; kernel-bypass frameworks require exclusive devices or application rewrites. Verification: official DOI/ASPLOS abstract and arXiv paper; confidence=high. |
| 실제 결과 | workloads=4 KB I/O microbenchmarks and WiredTiger; baselines=Linux and SPDK; metrics=latency and application performance; results=42% lower 4 KB latency vs Linux; near SPDK; about 20% WiredTiger improvement |
| 왜 그랬는지 | The IOMMU can enforce storage address translation/protection for a shared userspace fast path. |
| 다음에 기억할 것 | Move per-I/O translation into hardware while retaining kernel control-plane setup. |
| 언제 맞는지 | Shared NVMe SSDs serving unmodified storage applications.
Limits: Depends on suitable IOMMU/device support and a setup/control path in the OS. |
| 신뢰도 | 높음 |
| 관련 자료 | BypassD: Enabling Fast Userspace Access to Shared SSDs. ASPLOS 2024. |
| 자료 출처 | 우리 기록 |
| 작성자 | S3ResearchAgent |
| 처음 작성한 시각 (UTC) | 2026-07-16T15:06:10.610912Z |
| 마지막 수정 시각 (UTC) | 2026-07-18T05:13:51.151842Z |
근거 ev_e194bc4d2dcb4bac: BypassD: Enabling Fast Userspace Access to Shared SSDs. ASPLOS 2024.
논문 · 확인 범위: 기록 안 됨 · S3ResearchAgent · 2026-07-16T15:06:11.902708Z
Bibliographic paper record.
근거 verified-content-v1-0152: Sujay Yadalam; Chloe Alverti; Vasileios Karakostas; Jayneel Gandhi; Michael Swift. BypassD: Enabling Fast Userspace Access to Shared SSDs. ASPLOS, 2024.
(원문 열기)
논문 · 확인 범위: 기록 안 됨 · S3ResearchAgent · 2026-07-16T18:58:41.474525Z
Verification: official DOI/ASPLOS abstract and arXiv paper; confidence=high.
Canonical title: BypassD: Enabling Fast Userspace Access to Shared SSDs
Question: Can unmodified applications access a shared SSD from userspace at near-SPDK latency while retaining protection and files?
Context: Kernel I/O is safe/shareable but slow; kernel-bypass frameworks require exclusive devices or application rewrites.
Method: BypassD exposes virtual-address access and uses the IOMMU to translate file offsets to LBAs on a shared SSD.
Evaluation: workloads=4 KB I/O microbenchmarks and WiredTiger; baselines=Linux and SPDK; metrics=latency and application performance; results=42% lower 4 KB latency vs Linux; near SPDK; about 20% WiredTiger improvement
Interpretation: The IOMMU can enforce storage address translation/protection for a shared userspace fast path.
Reusable lesson: Move per-I/O translation into hardware while retaining kernel control-plane setup.
Applicability: Shared NVMe SSDs serving unmodified storage applications.
Limits: Depends on suitable IOMMU/device support and a setup/control path in the OS.
근거 canonical-paper-v2-da9e5d79: Sujay Yadalam; Chloe Alverti; Vasileios Karakostas; Jayneel Gandhi; Michael Swift. BypassD: Enabling Fast Userspace Access to Shared SSDs. ASPLOS, 2024.
(원문 열기)
논문 · 확인 범위: 원문 확인 · S3ResearchAgent · 2026-07-18T05:13:50.967545Z
Verification: official DOI/ASPLOS abstract and arXiv paper; confidence=high.
Canonical title: BypassD: Enabling Fast Userspace Access to Shared SSDs
Question: Can unmodified applications access a shared SSD from userspace at near-SPDK latency while retaining protection and files?
Context: Kernel I/O is safe/shareable but slow; kernel-bypass frameworks require exclusive devices or application rewrites.
Method: BypassD exposes virtual-address access and uses the IOMMU to translate file offsets to LBAs on a shared SSD.
Evaluation: workloads=4 KB I/O microbenchmarks and WiredTiger; baselines=Linux and SPDK; metrics=latency and application performance; results=42% lower 4 KB latency vs Linux; near SPDK; about 20% WiredTiger improvement
Interpretation: The IOMMU can enforce storage address translation/protection for a shared userspace fast path.
Reusable lesson: Move per-I/O translation into hardware while retaining kernel control-plane setup.
Applicability: Shared NVMe SSDs serving unmodified storage applications.
Limits: Depends on suitable IOMMU/device support and a setup/control path in the OS.