]> 2026-09-08T17:23:27+09:00 Lesson:pet proactive demotion for efficient tiered memory management e2185da3 3000 ko Applications able to expose or infer P-block allocation boundaries in tiered memory. Limits: Trades small performance loss for capacity and requires P-block integration/identification. PET introduces application allocation units called P-blocks, with targeted selection and fast promotion in Linux 6.1.44. S3ResearchAgent medium Venue: EuroSys. Year: 2025. Page-granular hotness can retain unused bytes in scarce fast memory and cause capacity-cliff slowdowns. Verification: official DOI metadata and accessible publisher abstract; confidence=high. 2026-07-16T15:00:42Z 2461238.1254861 PET: Proactive Demotion for Efficient Tiered Memory Management. EuroSys 2025. Logical allocation boundaries can be a better management unit than fixed VM pages. PET: Proactive Demotion for Efficient Tiered Memory Management workloads=tiered-memory workloads on Linux 6.1.44; baselines=page-based tiering; metrics=fast-memory footprint and performance; results=39.8% average/80.4% maximum footprint reduction at 1.7% average loss; mitigates 31% cliff Can tiered memory allocate and promote data at a unit that better matches application locality than a page? lab Align placement units with object allocation and locality when pages mix valuable and cold bytes. Draft 2026-07-18T14:58:52Z 2461240.124213 2026-07-18T14:58:52Z 2461240.124213 pet proactive demotion for efficient tiered memory management e2185da3 3000 ev_183ade6330054471 2026-07-16T15:00:43Z 2461238.1254977 S3ResearchAgent PET: Proactive Demotion for Efficient Tiered Memory Management. EuroSys 2025. paper Bibliographic paper record. not_recorded pet proactive demotion for efficient tiered memory management e2185da3# 51fb377b6668c516c4d7fa492c11f6fc 3000 verified-content-v1-0126 2026-07-16T18:45:30Z 2461238.2815972 S3ResearchAgent Wanju Doh et al., "PET: Reducing Fast-Memory Consumption of Tiered Memory Systems with P-blocks", EuroSys 2025. paper Verification: official DOI metadata and accessible publisher abstract; confidence=high. Canonical title: PET: Reducing Fast-Memory Consumption of Tiered Memory Systems with P-blocks Question: Can tiered memory allocate and promote data at a unit that better matches application locality than a page? Context: Page-granular hotness can retain unused bytes in scarce fast memory and cause capacity-cliff slowdowns. Method: PET introduces application allocation units called P-blocks, with targeted selection and fast promotion in Linux 6.1.44. Evaluation: workloads=tiered-memory workloads on Linux 6.1.44; baselines=page-based tiering; metrics=fast-memory footprint and performance; results=39.8% average/80.4% maximum footprint reduction at 1.7% average loss; mitigates 31% cliff Interpretation: Logical allocation boundaries can be a better management unit than fixed VM pages. Reusable lesson: Align placement units with object allocation and locality when pages mix valuable and cold bytes. Applicability: Applications able to expose or infer P-block allocation boundaries in tiered memory. Limits: Trades small performance loss for capacity and requires P-block integration/identification. not_recorded pet proactive demotion for efficient tiered memory management e2185da3# 05f4c866f762fa68a080b8ad8bcba161 3000 canonical-paper-v2-e2185da3 2026-07-18T05:33:40Z 2461239.731713 S3ResearchAgent Wanju Doh et al., "PET: Proactive Demotion for Efficient Tiered Memory Management", EuroSys 2025. paper Verification: official DOI metadata and accessible publisher abstract; confidence=medium. Canonical title: PET: Proactive Demotion for Efficient Tiered Memory Management Question: Can tiered memory allocate and promote data at a unit that better matches application locality than a page? Context: Page-granular hotness can retain unused bytes in scarce fast memory and cause capacity-cliff slowdowns. Method: PET introduces application allocation units called P-blocks, with targeted selection and fast promotion in Linux 6.1.44. Evaluation: workloads=tiered-memory workloads on Linux 6.1.44; baselines=page-based tiering; metrics=fast-memory footprint and performance; results=39.8% average/80.4% maximum footprint reduction at 1.7% average loss; mitigates 31% cliff Interpretation: Logical allocation boundaries can be a better management unit than fixed VM pages. Reusable lesson: Align placement units with object allocation and locality when pages mix valuable and cold bytes. Applicability: Applications able to expose or infer P-block allocation boundaries in tiered memory. Limits: Trades small performance loss for capacity and requires P-block integration/identification. official_abstract pet proactive demotion for efficient tiered memory management e2185da3# dc151f486cdb6624da58a6975a53519f 3000 2026-07-18T14:58:51Z 2461240.1242014 S3ResearchAgent verify_2660d4ec33923bd9a25a 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_183ade6330054471 35de5fbd7d3a45bf634f033940e32b50a5c36bc440fac29afde555c23650f09c pet proactive demotion for efficient tiered memory management e2185da3# ef89b0a24a9a904e5db777c5d51d2487 3000 2026-07-18T14:58:51Z 2461240.1242014 S3ResearchAgent verify_72e2818f25e96cab2f71 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 verified-content-v1-0126 7781620e91cdec444ddae394fc7f7815b341fe44137ec28aca1819c84ddfe1c6 pet proactive demotion for efficient tiered memory management e2185da3# 9c7000a40b08012918c67df350d78654 3000 2026-07-18T14:58:52Z 2461240.124213 S3ResearchAgent verify_189139e63d00c248b830 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-e2185da3 e4f9f71e5600515d154a71b80e7a0d360a36f6f8d09274e56560da6a4c842dd5 pet proactive demotion for efficient tiered memory management e2185da3# 2e4deda02d0cb2967a44fb029bc65880