{"id":"https://openalex.org/W7148969659","doi":"https://doi.org/10.48550/arxiv.2604.01620","title":"DAXFS: A Lock-Free Shared Filesystem for CXL Disaggregated Memory","display_name":"DAXFS: A Lock-Free Shared Filesystem for CXL Disaggregated Memory","publication_year":2026,"publication_date":"2026-04-02","ids":{"openalex":"https://openalex.org/W7148969659","doi":"https://doi.org/10.48550/arxiv.2604.01620"},"language":null,"primary_location":{"id":"doi:10.48550/arxiv.2604.01620","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2604.01620","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"},"type":"preprint","indexed_in":["datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.48550/arxiv.2604.01620","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5132908441","display_name":"Cong Wang","orcid":null},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Wang, Cong","raw_affiliation_strings":[],"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103214236","display_name":"Yiwei Yang","orcid":"https://orcid.org/0000-0001-8011-5868"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Yang, Yiwei","raw_affiliation_strings":[],"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5132835891","display_name":"Yusheng Zheng","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Zheng, Yusheng","raw_affiliation_strings":[],"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5132908441"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10054","display_name":"Parallel Computing and Optimization Techniques","score":0.670799970626831,"subfield":{"id":"https://openalex.org/subfields/1708","display_name":"Hardware and Architecture"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10054","display_name":"Parallel Computing and Optimization Techniques","score":0.670799970626831,"subfield":{"id":"https://openalex.org/subfields/1708","display_name":"Hardware and Architecture"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10772","display_name":"Distributed systems and fault tolerance","score":0.14180000126361847,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11181","display_name":"Advanced Data Storage Technologies","score":0.12200000137090683,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/cache","display_name":"Cache","score":0.5925999879837036},{"id":"https://openalex.org/keywords/cache-coherence","display_name":"Cache coherence","score":0.5426999926567078},{"id":"https://openalex.org/keywords/page-cache","display_name":"Page cache","score":0.5194000005722046},{"id":"https://openalex.org/keywords/bus-sniffing","display_name":"Bus sniffing","score":0.499099999666214},{"id":"https://openalex.org/keywords/throughput","display_name":"Throughput","score":0.49070000648498535},{"id":"https://openalex.org/keywords/pci-express","display_name":"PCI Express","score":0.41780000925064087},{"id":"https://openalex.org/keywords/shared-memory","display_name":"Shared memory","score":0.40230000019073486},{"id":"https://openalex.org/keywords/host","display_name":"Host (biology)","score":0.3982999920845032},{"id":"https://openalex.org/keywords/hash-function","display_name":"Hash function","score":0.37790000438690186},{"id":"https://openalex.org/keywords/protocol","display_name":"Protocol (science)","score":0.36890000104904175}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8971999883651733},{"id":"https://openalex.org/C115537543","wikidata":"https://www.wikidata.org/wiki/Q165596","display_name":"Cache","level":2,"score":0.5925999879837036},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.5830000042915344},{"id":"https://openalex.org/C141917322","wikidata":"https://www.wikidata.org/wiki/Q1025017","display_name":"Cache coherence","level":5,"score":0.5426999926567078},{"id":"https://openalex.org/C36340418","wikidata":"https://www.wikidata.org/wiki/Q7124288","display_name":"Page cache","level":5,"score":0.5194000005722046},{"id":"https://openalex.org/C51185590","wikidata":"https://www.wikidata.org/wiki/Q1017228","display_name":"Bus sniffing","level":5,"score":0.499099999666214},{"id":"https://openalex.org/C173608175","wikidata":"https://www.wikidata.org/wiki/Q232661","display_name":"Parallel computing","level":1,"score":0.4975000023841858},{"id":"https://openalex.org/C157764524","wikidata":"https://www.wikidata.org/wiki/Q1383412","display_name":"Throughput","level":3,"score":0.49070000648498535},{"id":"https://openalex.org/C64270927","wikidata":"https://www.wikidata.org/wiki/Q206924","display_name":"PCI Express","level":3,"score":0.41780000925064087},{"id":"https://openalex.org/C133875982","wikidata":"https://www.wikidata.org/wiki/Q764810","display_name":"Shared memory","level":2,"score":0.40230000019073486},{"id":"https://openalex.org/C126831891","wikidata":"https://www.wikidata.org/wiki/Q221673","display_name":"Host (biology)","level":2,"score":0.3982999920845032},{"id":"https://openalex.org/C99138194","wikidata":"https://www.wikidata.org/wiki/Q183427","display_name":"Hash function","level":2,"score":0.37790000438690186},{"id":"https://openalex.org/C2780385302","wikidata":"https://www.wikidata.org/wiki/Q367158","display_name":"Protocol (science)","level":3,"score":0.36890000104904175},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.34860000014305115},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3418000042438507},{"id":"https://openalex.org/C153180980","wikidata":"https://www.wikidata.org/wiki/Q19776675","display_name":"Commit","level":2,"score":0.3386000096797943},{"id":"https://openalex.org/C76399640","wikidata":"https://www.wikidata.org/wiki/Q189401","display_name":"Virtual memory","level":4,"score":0.32659998536109924},{"id":"https://openalex.org/C188045654","wikidata":"https://www.wikidata.org/wiki/Q17148339","display_name":"Memory bandwidth","level":2,"score":0.3237999975681305},{"id":"https://openalex.org/C38556500","wikidata":"https://www.wikidata.org/wiki/Q13404475","display_name":"Cache algorithms","level":4,"score":0.32100000977516174},{"id":"https://openalex.org/C189783530","wikidata":"https://www.wikidata.org/wiki/Q352090","display_name":"CPU cache","level":3,"score":0.3206000030040741},{"id":"https://openalex.org/C74912251","wikidata":"https://www.wikidata.org/wiki/Q6815727","display_name":"Memory footprint","level":2,"score":0.31869998574256897},{"id":"https://openalex.org/C136085584","wikidata":"https://www.wikidata.org/wiki/Q910289","display_name":"Overlay","level":2,"score":0.31459999084472656},{"id":"https://openalex.org/C165696696","wikidata":"https://www.wikidata.org/wiki/Q11287","display_name":"Exploit","level":2,"score":0.3133000135421753},{"id":"https://openalex.org/C201148951","wikidata":"https://www.wikidata.org/wiki/Q5015976","display_name":"Cache coloring","level":4,"score":0.30869999527931213},{"id":"https://openalex.org/C113166858","wikidata":"https://www.wikidata.org/wiki/Q5015981","display_name":"Cache pollution","level":5,"score":0.3077000081539154},{"id":"https://openalex.org/C25344961","wikidata":"https://www.wikidata.org/wiki/Q192726","display_name":"Virtual machine","level":2,"score":0.30469998717308044},{"id":"https://openalex.org/C130795937","wikidata":"https://www.wikidata.org/wiki/Q2561570","display_name":"Remote direct memory access","level":2,"score":0.30329999327659607},{"id":"https://openalex.org/C55439883","wikidata":"https://www.wikidata.org/wiki/Q360812","display_name":"Correctness","level":2,"score":0.3018999993801117},{"id":"https://openalex.org/C50954386","wikidata":"https://www.wikidata.org/wiki/Q656083","display_name":"Paging","level":2,"score":0.29350000619888306},{"id":"https://openalex.org/C39528615","wikidata":"https://www.wikidata.org/wiki/Q1229610","display_name":"Distributed shared memory","level":5,"score":0.2928999960422516},{"id":"https://openalex.org/C138101251","wikidata":"https://www.wikidata.org/wiki/Q213092","display_name":"Thread (computing)","level":2,"score":0.28760001063346863},{"id":"https://openalex.org/C79581498","wikidata":"https://www.wikidata.org/wiki/Q1367530","display_name":"Suite","level":2,"score":0.2797999978065491},{"id":"https://openalex.org/C81917197","wikidata":"https://www.wikidata.org/wiki/Q628760","display_name":"Selection (genetic algorithm)","level":2,"score":0.27889999747276306},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.272599995136261},{"id":"https://openalex.org/C101722063","wikidata":"https://www.wikidata.org/wiki/Q218825","display_name":"Random access","level":2,"score":0.2718000113964081},{"id":"https://openalex.org/C160403385","wikidata":"https://www.wikidata.org/wiki/Q220543","display_name":"Queue","level":2,"score":0.2628999948501587},{"id":"https://openalex.org/C5165142","wikidata":"https://www.wikidata.org/wiki/Q5432732","display_name":"False sharing","level":5,"score":0.26109999418258667},{"id":"https://openalex.org/C202623185","wikidata":"https://www.wikidata.org/wiki/Q375176","display_name":"Disk buffer","level":3,"score":0.25600001215934753},{"id":"https://openalex.org/C189930140","wikidata":"https://www.wikidata.org/wiki/Q1112878","display_name":"CAS latency","level":4,"score":0.2529999911785126},{"id":"https://openalex.org/C20528329","wikidata":"https://www.wikidata.org/wiki/Q513932","display_name":"Linearizability","level":3,"score":0.25200000405311584}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.48550/arxiv.2604.01620","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2604.01620","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"article"}],"best_oa_location":{"id":"doi:10.48550/arxiv.2604.01620","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2604.01620","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"},"sustainable_development_goals":[{"score":0.8063234686851501,"display_name":"Peace, Justice and strong institutions","id":"https://metadata.un.org/sdg/16"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"CXL":[0,32,41,100],"(Compute":[1],"Express":[2],"Link)":[3],"enables":[4,56],"multiple":[5,61],"hosts":[6,62,105],"to":[7,139,166],"share":[8,106],"byte-addressable":[9],"memory":[10,34,108],"with":[11,72,87,110,121,145],"hardware":[12],"cache":[13,71,171],"coherence,":[14],"but":[15],"no":[16,122],"existing":[17],"filesystem":[18,30],"exploits":[19],"this":[20],"for":[21,31],"lock-free":[22,57],"multi-host":[23,75,96],"coordination.":[24],"We":[25,94],"present":[26],"DaxFS,":[27],"a":[28,73,107],"Linux":[29],"shared":[33,69,84],"that":[35,161],"uses":[36],"cmpxchg":[37],"atomic":[38],"operations,":[39],"which":[40],"makes":[42],"coherent":[43],"across":[44,133],"host":[45],"boundaries,":[46],"as":[47],"its":[48],"sole":[49],"coordination":[50],"primitive.":[51],"A":[52,67],"CAS-based":[53],"hash":[54],"overlay":[55],"concurrent":[58],"writes":[59],"from":[60],"without":[63],"any":[64],"centralized":[65],"coordinator.":[66],"cooperative":[68],"page":[70,170],"novel":[74],"clock":[76],"eviction":[77],"algorithm":[78],"(MH-clock)":[79],"provides":[80],"demand-paged":[81],"caching":[82],"in":[83],"DAX":[85],"memory,":[86],"fully":[88],"decentralized":[89],"victim":[90],"selection":[91],"via":[92],"cmpxchg.":[93],"validate":[95],"correctness":[97],"using":[98],"QEMU-emulated":[99],"3.0,":[101],"where":[102],"two":[103],"virtual":[104],"region":[109],"TCP-forwarded":[111],"atomics.":[112],"Under":[113],"cross-host":[114],"contention,":[115],"DaxFS":[116,129],"maintains":[117],"&gt;99%":[118],"CAS":[119],"accuracy":[120],"lost":[123],"updates.":[124],"On":[125],"single-host":[126],"DRAM-backed":[127],"DAX,":[128],"exceeds":[130],"tmpfs":[131],"throughput":[132,144,153],"all":[134],"write":[135,143],"workloads,":[136],"achieving":[137],"up":[138],"2.68x":[140],"higher":[141,150],"random":[142,151],"4":[146],"threads":[147,168],"and":[148],"1.18x":[149],"read":[152],"at":[154,173],"64":[155],"KB.":[156],"Preliminary":[157],"GPU":[158,167],"microbenchmarks":[159],"show":[160],"the":[162],"cmpxchg-based":[163],"design":[164],"extends":[165],"performing":[169],"operations":[172],"PCIe":[174],"5.0":[175],"bandwidth":[176],"limits.":[177]},"counts_by_year":[],"updated_date":"2026-04-04T06:15:33.020886","created_date":"2026-04-04T00:00:00"}
