]> 2026-09-08T18:49:39+09:00 Lesson:efficient hybrid polling for ultra low latency storage devices e753019a 3000 ko 짧은 service time의 NVMe/Optane/Z-SSD와 CPU 예산이 중요한 latency-sensitive I/O에 높음. EHP는 device service time과 queueing delay를 분리 추정해 sleep 시간을 적응시키고, 긴 I/O에는 polling이 이득이 없으면 interrupt로 전환한다. Linux 4.16.1에서 Z-SSD와 Optane으로 평가했다. S3ResearchAgent low Publication scope: international. Lab publication metadata: 1. Gyusun Lee, Seokha Shin, Jinkyu Jeong, "Efficient Hybrid Polling for Ultra-Low Latency Storage Devices," Journal of Systems Architecture, Volume 122, January 2022, 102338 Verification level: full_text. Sources checked: https://www.sciencedirect.com/science/article/pii/S1383762121002319 https://yonsei.elsevierpure.com/en/publications/efficient-hybrid-polling-for-ultra-low-latency-storage-devices/ https://doi.org/10.1016/j.sysarc.2021.102338 2026-07-16T15:03:17Z 2461238.1272801 Publication record 1: Gyusun Lee, Seokha Shin, Jinkyu Jeong, "Efficient Hybrid Polling for Ultra-Low Latency Storage Devices," Journal of Systems Architecture, Volume 122, January 2022, 102338 평가는 구형 Linux 4.16.1과 두 종류 저지연 장치/FIO 중심이다. polling 사용 여부의 정책 threshold와 latency 추정 정확도에 민감하며 장치 firmware/GC 변동 시 적응 구간이 생긴다. Technical interpretation: hybrid polling의 sleep은 완료시간 하나가 아니라 device time과 queue delay를 분리해 추정하고, polling 자체가 손해인 장기 요청은 interrupt로 보내야 한다. Efficient Hybrid Polling for Ultra-Low Latency Storage Devices light load에서 기존 hybrid polling 대비 CPU 사용 5~40% 절감하면서 classic polling에 가까운 latency 유지. heavy load에서 CPU 5~30% 절감, I/O latency 최대 10% 감소. ultra-low-latency SSD에서 순수 interrupt의 wake-up 지연과 busy polling의 CPU 낭비 사이를 Linux hybrid polling보다 안정적으로 조절할 수 있는가? lab hybrid polling의 sleep은 완료시간 하나가 아니라 device time과 queue delay를 분리해 추정하고, polling 자체가 손해인 장기 요청은 interrupt로 보내야 한다. Draft 2026-07-18T14:58:27Z 2461240.1239236 2026-07-18T14:58:27Z 2461240.1239236 efficient hybrid polling for ultra low latency storage devices e753019a 3000 ev_57c2738a59674eb4 2026-07-16T15:03:20Z 2461238.1273148 S3ResearchAgent Gyusun Lee, Seokha Shin, Jinkyu Jeong, "Efficient Hybrid Polling for Ultra-Low Latency Storage Devices," Journal of Systems Architecture, Volume 122, January 2022, 102338 paper Source: Yonsei University Computer Systems Laboratory publication list supplied by the user. Manifestation 1 of 1. not_recorded efficient hybrid polling for ultra low latency storage devices e753019a# fc94b683c074e04038c215c8c71fc56f 3000 canonical-paper-v2-e753019a 2026-07-18T05:19:36Z 2461239.7219444 S3ResearchAgent Gyusun Lee, Seokha Shin, Jinkyu Jeong, "Efficient Hybrid Polling for Ultra-Low Latency Storage Devices" Journal of Systems Architecture, Volume 122, January 2022, 102338 paper 정본 Lesson 보강 근거. 검토 원본: Lesson:technical_review_efficient_hybrid_polling_for_ultra_low_latency_storage_devices_545391d6. 확인 범위: full_text. 확인한 자료: https://www.sciencedirect.com/science/article/pii/S1383762121002319 ; https://yonsei.elsevierpure.com/en/publications/efficient-hybrid-polling-for-ultra-low-latency-storage-devices/ ; https://doi.org/10.1016/j.sysarc.2021.102338. 질문, 방법, 평가, 해석, 재사용 교훈, 적용 범위와 한계를 같은 Lesson 본문에 통합했습니다. full_text efficient hybrid polling for ultra low latency storage devices e753019a# 373f588574f2f91016fa5717d8a1d112 3000 2026-07-18T14:58:27Z 2461240.1239236 S3ResearchAgent verify_4f1df4356897941f722b metadata_only context 수집 manifest의 실패 원장만 보존되어 원문 주장을 검증하지 못함. inconclusive 689990da723c183d73e5102f6b5a7c8972497dfa210f09dd79bb20472fb857d5 R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=689990da723c183d73e5102f6b5a7c8972497dfa210f09dd79bb20472fb857d5 보존 파일 manifest.json ev_57c2738a59674eb4 1c6ddb396824af191ec091f71d6ae7915ae6b7143fb8574d9f432a23263bc5be efficient hybrid polling for ultra low latency storage devices e753019a# f92085e93e9e1b5ee79d72cfdd4b52e5 3000 2026-07-18T14:58:27Z 2461240.1239236 S3ResearchAgent verify_3947ee54bc28d44a32d2 metadata_only context 수집 manifest의 실패 원장만 보존되어 원문 주장을 검증하지 못함. inconclusive 689990da723c183d73e5102f6b5a7c8972497dfa210f09dd79bb20472fb857d5 R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=689990da723c183d73e5102f6b5a7c8972497dfa210f09dd79bb20472fb857d5 보존 파일 manifest.json canonical-paper-v2-e753019a 6c1d93ef2f49201424b0b9096d73d5ae5ddfab6d3562844edde1810a234ed3c0 efficient hybrid polling for ultra low latency storage devices e753019a# cf5cfecdd0d5a26ba2a45dff8675b355 3000 2026-07-18T14:58:27Z 2461240.1239236 S3ResearchAgent verify_6ded4c45a3511b0168a1 metadata_only observation,interpretation,reusable_lesson claim-bearing O/I/R coverage was not established; confidence forced to low inconclusive d4fc6aa62e7bb6909a59c357cc7dbc25add2228b352061cb93793c840b6f3c9e R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=d4fc6aa62e7bb6909a59c357cc7dbc25add2228b352061cb93793c840b6f3c9e; high-confidence adjudication ledger No stored source object; manifest fetch failed: http_error: source HTTP 상태가 200이 아닙니다: 403 canonical-paper-v2-e753019a 6c1d93ef2f49201424b0b9096d73d5ae5ddfab6d3562844edde1810a234ed3c0 efficient hybrid polling for ultra low latency storage devices e753019a# 22feeab6fd8bf178d2e1e4ff026b1e29 Lesson:technical review efficient hybrid polling for ultra low latency storage devices 545391d6 3000 ko technical review efficient hybrid polling for ultra low latency storage devices 545391d6 Supersedes 102 ko Supersedes