]> 2026-09-08T15:37:25+09:00 Lesson:fast core scheduling with userspace process abstraction d1ea9f62 3000 ko Low-latency core scheduling and colocated services on UINTR/MPK-capable CPUs. Limits: Requires userspace interrupts, MPK, shared-process abstractions, and constrained syscall behavior; numeric evaluation not verified. uProcess combines userspace interrupts and Memory Protection Keys to create a restricted privileged mode; Vessel uses it to reschedule cores and colocate latency-critical and best-effort work. S3ResearchAgent medium Venue: SOSP. Year: 2024. Kernel scheduling transitions are too slow for fine-grained colocation, while raw userspace scheduling weakens isolation. Verification: official_abstract; confidence=medium. 2026-07-16T14:57:43Z 2461238.1234144 Fast Core Scheduling with Userspace Process Abstraction. SOSP 2024. A hardware-protected userspace control plane can shorten scheduling paths without fully trusting applications. Fast Core Scheduling with Userspace Process Abstraction workloads=latency-critical and best-effort colocated workloads; baselines=kernel-based core scheduling; metrics=rescheduling latency; overall performance; tail latency; results=sub-microsecond rescheduling; no numeric speedup in accessible primary abstract Can applications reassign cores at sub-microsecond scale without giving userspace unrestricted kernel privilege? lab Move frequent control decisions to a restricted userspace domain backed by hardware isolation. Draft 2026-07-18T14:58:31Z 2461240.1239699 2026-07-18T14:58:31Z 2461240.1239699 fast core scheduling with userspace process abstraction d1ea9f62 3000 ev_26eb9cde5dcd493e 2026-07-16T14:57:44Z 2461238.1234259 S3ResearchAgent Fast Core Scheduling with Userspace Process Abstraction. SOSP 2024. paper Bibliographic paper record. not_recorded fast core scheduling with userspace process abstraction d1ea9f62# fbb6d9e693db14ff7844ae3ea8f253c9 3000 verified-content-v1-0088 2026-07-16T18:48:04Z 2461238.2833796 S3ResearchAgent Jiazhen Lin et al., "Fast Core Scheduling with Userspace Process Abstraction", SOSP 2024. paper Verification: official_abstract; confidence=medium. Canonical title: Fast Core Scheduling with Userspace Process Abstraction Question: Can applications reassign cores at sub-microsecond scale without giving userspace unrestricted kernel privilege? Context: Kernel scheduling transitions are too slow for fine-grained colocation, while raw userspace scheduling weakens isolation. Method: uProcess combines userspace interrupts and Memory Protection Keys to create a restricted privileged mode; Vessel uses it to reschedule cores and colocate latency-critical and best-effort work. Evaluation: workloads=latency-critical and best-effort colocated workloads; baselines=kernel-based core scheduling; metrics=rescheduling latency; overall performance; tail latency; results=sub-microsecond rescheduling; no numeric speedup in accessible primary abstract Interpretation: A hardware-protected userspace control plane can shorten scheduling paths without fully trusting applications. Reusable lesson: Move frequent control decisions to a restricted userspace domain backed by hardware isolation. Applicability: Low-latency core scheduling and colocated services on UINTR/MPK-capable CPUs. Limits: Requires userspace interrupts, MPK, shared-process abstractions, and constrained syscall behavior; numeric evaluation not verified. not_recorded fast core scheduling with userspace process abstraction d1ea9f62# e0fbfdd20878cf0a255d9bd19c547dd2 3000 canonical-paper-v2-d1ea9f62 2026-07-18T05:21:29Z 2461239.7232523 S3ResearchAgent Jiazhen Lin et al., "Fast Core Scheduling with Userspace Process Abstraction", SOSP 2024. paper Verification: official_abstract; confidence=medium. Canonical title: Fast Core Scheduling with Userspace Process Abstraction Question: Can applications reassign cores at sub-microsecond scale without giving userspace unrestricted kernel privilege? Context: Kernel scheduling transitions are too slow for fine-grained colocation, while raw userspace scheduling weakens isolation. Method: uProcess combines userspace interrupts and Memory Protection Keys to create a restricted privileged mode; Vessel uses it to reschedule cores and colocate latency-critical and best-effort work. Evaluation: workloads=latency-critical and best-effort colocated workloads; baselines=kernel-based core scheduling; metrics=rescheduling latency; overall performance; tail latency; results=sub-microsecond rescheduling; no numeric speedup in accessible primary abstract Interpretation: A hardware-protected userspace control plane can shorten scheduling paths without fully trusting applications. Reusable lesson: Move frequent control decisions to a restricted userspace domain backed by hardware isolation. Applicability: Low-latency core scheduling and colocated services on UINTR/MPK-capable CPUs. Limits: Requires userspace interrupts, MPK, shared-process abstractions, and constrained syscall behavior; numeric evaluation not verified. official_abstract fast core scheduling with userspace process abstraction d1ea9f62# 394c955c4424c175817c868f0a6e66d3 3000 2026-07-18T14:58:31Z 2461240.1239699 S3ResearchAgent verify_5a99d384b21869ca3c1f metadata_only context 보존 객체는 cookie/landing page이므로 서지 위치만 확인했고 본문 주장을 검증하지 못함. inconclusive 24945a9e40ad8e250fd9d23908cf351924a7a06012dde5625901690eeca358c3 R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=24945a9e40ad8e250fd9d23908cf351924a7a06012dde5625901690eeca358c3 보존 파일 objects/sha256/24/24945a9e40ad8e250fd9d23908cf351924a7a06012dde5625901690eeca358c3 ev_26eb9cde5dcd493e c1da0ecc71565cdb24da065c49c8481fccee506fb0215e566354b83c3ff1f7e8 fast core scheduling with userspace process abstraction d1ea9f62# 65731a88fbb73edbd3b2f1190a338eb9 3000 2026-07-18T14:58:31Z 2461240.1239699 S3ResearchAgent verify_09e5fa3b701a824a7abf metadata_only context 보존 객체는 cookie/landing page이므로 서지 위치만 확인했고 본문 주장을 검증하지 못함. inconclusive 24945a9e40ad8e250fd9d23908cf351924a7a06012dde5625901690eeca358c3 R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=24945a9e40ad8e250fd9d23908cf351924a7a06012dde5625901690eeca358c3 보존 파일 objects/sha256/24/24945a9e40ad8e250fd9d23908cf351924a7a06012dde5625901690eeca358c3 verified-content-v1-0088 a8f9dd9c17dc0fe04afa9ccf418ec3a20f78c34de869850b081d979152b14aa4 fast core scheduling with userspace process abstraction d1ea9f62# b48af792f540b4aefc33844d83a0da6a 3000 2026-07-18T14:58:31Z 2461240.1239699 S3ResearchAgent verify_d84fb9689cad62e06a76 metadata_only context 보존 객체는 cookie/landing page이므로 서지 위치만 확인했고 본문 주장을 검증하지 못함. inconclusive 24945a9e40ad8e250fd9d23908cf351924a7a06012dde5625901690eeca358c3 R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=24945a9e40ad8e250fd9d23908cf351924a7a06012dde5625901690eeca358c3 보존 파일 objects/sha256/24/24945a9e40ad8e250fd9d23908cf351924a7a06012dde5625901690eeca358c3 canonical-paper-v2-d1ea9f62 648a6821c31224c0196ebd9b2bf558eba7cd4d714927cb95bf6abd1b6f2ea11a fast core scheduling with userspace process abstraction d1ea9f62# 449a1f28c3706254a03cbf8c2ca386cf