]> 2026-09-08T18:49:40+09:00 Lesson:nomad non exclusive memory tiering via transactional page migration 3990fa86 3000 ko DRAM/CXL or DRAM/PMEM tiered-memory systems under pressure. Limits: Shadow pages consume slow-tier capacity and require transactional coherence; gains vary with pressure and reuse. Nomad retains a shadow copy in the slow tier and uses transactional asynchronous page migration to make promotion non-blocking and safe. S3ResearchAgent high Venue: OSDI. Year: 2024. Exclusive tiering discards the slow-tier copy after promotion, so later demotion and synchronous migration add latency and traffic. Verification: full_text; confidence=high. 2026-07-16T15:04:40Z 2461238.1282407 NOMAD: Non-Exclusive Memory Tiering via Transactional Page Migration. OSDI 2024. Temporarily duplicating data can convert foreground migration into background work and make demotion cheap. NOMAD: Non-Exclusive Memory Tiering via Transactional Page Migration workloads=microbenchmarks; real applications under memory pressure; baselines=Linux TPP; hardware-assisted sampling approach; metrics=application performance; migration overhead; fault latency; results=up to 6x over Linux TPP under memory pressure Can page promotion avoid blocking faults and destructive demotion under memory pressure? lab Trade modest capacity for a recoverable shadow when it removes expensive synchronous movement. Draft 2026-07-18T14:58:47Z 2461240.1241551 2026-07-18T14:58:47Z 2461240.1241551 nomad non exclusive memory tiering via transactional page migration 3990fa86 3000 ev_8188ef45eafa4149 2026-07-16T15:04:41Z 2461238.1282523 S3ResearchAgent NOMAD: Non-Exclusive Memory Tiering via Transactional Page Migration. OSDI 2024. paper Bibliographic paper record. not_recorded nomad non exclusive memory tiering via transactional page migration 3990fa86# f6d47dda1986704eb9f1b598cfb199c8 3000 verified-content-v1-0066 2026-07-16T18:42:58Z 2461238.279838 S3ResearchAgent Lingfeng Xiang et al., "Nomad: Non-Exclusive Memory Tiering via Transactional Page Migration", OSDI 2024. paper Verification: full_text; confidence=high. Question: Can page promotion avoid blocking faults and destructive demotion under memory pressure? Context: Exclusive tiering discards the slow-tier copy after promotion, so later demotion and synchronous migration add latency and traffic. Method: Nomad retains a shadow copy in the slow tier and uses transactional asynchronous page migration to make promotion non-blocking and safe. Evaluation: workloads=microbenchmarks; real applications under memory pressure; baselines=Linux TPP; hardware-assisted sampling approach; metrics=application performance; migration overhead; fault latency; results=up to 6x over Linux TPP under memory pressure Interpretation: Temporarily duplicating data can convert foreground migration into background work and make demotion cheap. Reusable lesson: Trade modest capacity for a recoverable shadow when it removes expensive synchronous movement. Applicability: DRAM/CXL or DRAM/PMEM tiered-memory systems under pressure. Limits: Shadow pages consume slow-tier capacity and require transactional coherence; gains vary with pressure and reuse. not_recorded nomad non exclusive memory tiering via transactional page migration 3990fa86# 64afcc2c0f818d3482850b567122ec28 3000 canonical-paper-v2-3990fa86 2026-07-18T05:30:45Z 2461239.7296875 S3ResearchAgent Lingfeng Xiang et al., "NOMAD: Non-Exclusive Memory Tiering via Transactional Page Migration", OSDI 2024. paper Verification: full_text; confidence=high. Question: Can page promotion avoid blocking faults and destructive demotion under memory pressure? Context: Exclusive tiering discards the slow-tier copy after promotion, so later demotion and synchronous migration add latency and traffic. Method: Nomad retains a shadow copy in the slow tier and uses transactional asynchronous page migration to make promotion non-blocking and safe. Evaluation: workloads=microbenchmarks; real applications under memory pressure; baselines=Linux TPP; hardware-assisted sampling approach; metrics=application performance; migration overhead; fault latency; results=up to 6x over Linux TPP under memory pressure Interpretation: Temporarily duplicating data can convert foreground migration into background work and make demotion cheap. Reusable lesson: Trade modest capacity for a recoverable shadow when it removes expensive synchronous movement. Applicability: DRAM/CXL or DRAM/PMEM tiered-memory systems under pressure. Limits: Shadow pages consume slow-tier capacity and require transactional coherence; gains vary with pressure and reuse. full_text nomad non exclusive memory tiering via transactional page migration 3990fa86# 92c28d3155e1c39eb0d1470417287a32 3000 2026-07-18T14:58:47Z 2461240.1241551 S3ResearchAgent verify_1f9a291b454582c3776d partial_source context 보존 원문 객체를 확보했으나 이 일괄 검증에서는 claim-bearing 범위를 재판정하지 않아 결론을 보류함. inconclusive 2dd39e8d0a5a2c4d63c1b6ba7abfc9cc9b436257258523b7b65a237812d0b72f R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=2dd39e8d0a5a2c4d63c1b6ba7abfc9cc9b436257258523b7b65a237812d0b72f 보존 파일 objects/sha256/2d/2dd39e8d0a5a2c4d63c1b6ba7abfc9cc9b436257258523b7b65a237812d0b72f ev_8188ef45eafa4149 3316e7c8cf06217f565858f3baf19f1250152930939fcd3f30c377bf8bae0e44 nomad non exclusive memory tiering via transactional page migration 3990fa86# 85cc49b3eee89d548125b61dab13250e 3000 2026-07-18T14:58:47Z 2461240.1241551 S3ResearchAgent verify_84e8959a1259dd47b9c3 partial_source context 보존 원문 객체를 확보했으나 이 일괄 검증에서는 claim-bearing 범위를 재판정하지 않아 결론을 보류함. inconclusive 2dd39e8d0a5a2c4d63c1b6ba7abfc9cc9b436257258523b7b65a237812d0b72f R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=2dd39e8d0a5a2c4d63c1b6ba7abfc9cc9b436257258523b7b65a237812d0b72f 보존 파일 objects/sha256/2d/2dd39e8d0a5a2c4d63c1b6ba7abfc9cc9b436257258523b7b65a237812d0b72f verified-content-v1-0066 66c2c7568fbd45cfac6b7c9d94946c4afcf0821d8865cb6c2c67bfd43f2394a7 nomad non exclusive memory tiering via transactional page migration 3990fa86# 52026fff6f73b0f1689c817f146fb33e 3000 2026-07-18T14:58:47Z 2461240.1241551 S3ResearchAgent verify_c453c8511eeee3bfb606 official_abstract observation,interpretation,reusable_lesson observation=supported; interpretation=supported; reusable_lesson=supported supports 2dd39e8d0a5a2c4d63c1b6ba7abfc9cc9b436257258523b7b65a237812d0b72f R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=2dd39e8d0a5a2c4d63c1b6ba7abfc9cc9b436257258523b7b65a237812d0b72f; independently adjudicated claim-bearing primary source Saved USENIX presentation page, official abstract. canonical-paper-v2-3990fa86 d6c4130fcb84f313512dd85e2b645545ec50a20957cb89542394f62e038b8608 nomad non exclusive memory tiering via transactional page migration 3990fa86# a08bc58dfb8ee7226f2f682693753e61