面板：灵活数据放置（FDP）.pdf

1、Javier Gonzalez,SamsungRory Bolt,KioxiaJonathan Hughes,SolidigmJia Jia,ScaleFluxPanel:Flexible Data Placement(FDP)Flexible Data Placement(FDP)General Purpose Data Placement in NVMeJavier Gonzalez|Principal Engineer SamsungSTORAGEFDP:Ecosystem StatusIndustry AdoptionEcosystemFDP is the de-facto data

2、placement technology in NVMe SSDs OCP defines FDP as an optional feature,which defines a specific FDP implementationSingle SKU with backwards compatibility Incremental adoption at deploy-timeSimple host integration for legacy and NVMe-native applications on xPUs Fast 80%WAF benefit in real deploymen

3、ts Incremental engineering effort Possibility to expand guarantees with host maturityBenefits in TLC and QLC technologiesCustomer driven use-cases in DC and EnterpriseMulti-vendor supportDoneOng.(25H2)PlanningKernel v6.16FDP:Experimental Benefits 1/2RocksDBTuned SST hint.Upstreaming L4 to RocksDBmai

4、nlineSame results in pre-upstream FS with FDP support2.71.891.04123WAFTimeRocksDB WAF on FDPNon-FDP(XFS)FDP opt(XFS)TorFS4252476855360200040006000OPSRocksDB Throughputs(update)Non-FDP(XFS)FDP(XFS)TorFS020004000600080001 0000Latency(m s)RocksDB Latency(p99.9)Non-FDP(XFS)FDP(XFS)020004000600080001 000

5、0Latency(m s)RocksDB Latency(p99.99)Non-FDP(XFS)FDP(XFS)https:/ 00%WAFDevice UtilizationWAF&Device UtilizationNon-FDP(XFS)FDP opt(XFS)2.72.41.89123WAFTim eRocksDB WAF on FDPNon-FDP(XFS)FDP native(XFS)FDP opt(XFS)FDP:Experimental Benefits 2/2AI Inference O(TB)checkpoints 3 lifetimesAI General Workloa

6、dsLLM CheckpointingLarge dumps O(TB)Different lifetimes simultaneously(e.g.,fine tunning,recovery,versioning)Transient optimizations vs stable checkpointsIntermediate Result Store(e.g.,Agent MemorySegregate ephemeral data(sessions)with semi-permanent(knowledge)Trend to store popular queriesData Labe