{"id":"https://openalex.org/W2018221004","doi":"https://doi.org/10.1093/comjnl/bxq091","title":"Evaluation and Optimization of Kernel File Readaheads Based on Markov Decision Models","display_name":"Evaluation and Optimization of Kernel File Readaheads Based on Markov Decision Models","publication_year":2011,"publication_date":"2011-01-07","ids":{"openalex":"https://openalex.org/W2018221004","doi":"https://doi.org/10.1093/comjnl/bxq091","mag":"2018221004"},"language":"en","primary_location":{"id":"doi:10.1093/comjnl/bxq091","is_oa":false,"landing_page_url":"https://doi.org/10.1093/comjnl/bxq091","pdf_url":null,"source":{"id":"https://openalex.org/S44643521","display_name":"The Computer Journal","issn_l":"0010-4620","issn":["0010-4620","1460-2067"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Computer Journal","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5059351590","display_name":"Chuanfu Xu","orcid":"https://orcid.org/0000-0002-4876-2368"},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"C. Xu","raw_affiliation_strings":["Department of Automation, University of Science and Technology of China, Hefei Anhui 230026, China)"],"affiliations":[{"raw_affiliation_string":"Department of Automation, University of Science and Technology of China, Hefei Anhui 230026, China)","institution_ids":["https://openalex.org/I126520041"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5069802328","display_name":"Hongsheng Xi","orcid":"https://orcid.org/0000-0002-5747-9732"},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"H. Xi","raw_affiliation_strings":["Department of Automation, University of Science and Technology of China, Hefei, Anhui 230026, China","Department of Automation, University of Science and Technology of China, Hefei Anhui 230026, China)"],"affiliations":[{"raw_affiliation_string":"Department of Automation, University of Science and Technology of China, Hefei, Anhui 230026, China","institution_ids":["https://openalex.org/I126520041"]},{"raw_affiliation_string":"Department of Automation, University of Science and Technology of China, Hefei Anhui 230026, China)","institution_ids":["https://openalex.org/I126520041"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5029102289","display_name":"Feng Wu","orcid":"https://orcid.org/0000-0003-3989-0509"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"F. Wu","raw_affiliation_strings":["Intel Asia-Pacific Research and Development Ltd., No.\u00a0880 Zi Xing Rd., Shanghai Zizhu Science Park, Shanghai 200241, China"],"affiliations":[{"raw_affiliation_string":"Intel Asia-Pacific Research and Development Ltd., No.\u00a0880 Zi Xing Rd., Shanghai Zizhu Science Park, Shanghai 200241, China","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5059351590"],"corresponding_institution_ids":["https://openalex.org/I126520041"],"apc_list":{"value":2635,"currency":"GBP","value_usd":3232},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":{"value":0.12559978,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":99},"biblio":{"volume":"54","issue":"11","first_page":"1741","last_page":"1755"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11181","display_name":"Advanced Data Storage Technologies","score":0.9976999759674072,"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"}},"topics":[{"id":"https://openalex.org/T11181","display_name":"Advanced Data Storage Technologies","score":0.9976999759674072,"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/T10054","display_name":"Parallel Computing and Optimization Techniques","score":0.9911999702453613,"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/T10101","display_name":"Cloud Computing and Resource Management","score":0.9905999898910522,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/computer-science","display_name":"Computer science","score":0.8994550704956055},{"id":"https://openalex.org/keywords/linux-kernel","display_name":"Linux kernel","score":0.7030129432678223},{"id":"https://openalex.org/keywords/kernel","display_name":"Kernel (algebra)","score":0.6696239709854126},{"id":"https://openalex.org/keywords/markov-decision-process","display_name":"Markov decision process","score":0.6201211810112},{"id":"https://openalex.org/keywords/path","display_name":"Path (computing)","score":0.5267704725265503},{"id":"https://openalex.org/keywords/process","display_name":"Process (computing)","score":0.48234885931015015},{"id":"https://openalex.org/keywords/markov-chain","display_name":"Markov chain","score":0.48055461049079895},{"id":"https://openalex.org/keywords/sample","display_name":"Sample (material)","score":0.4322611689567566},{"id":"https://openalex.org/keywords/markov-process","display_name":"Markov process","score":0.30600833892822266},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.27986615896224976},{"id":"https://openalex.org/keywords/operating-system","display_name":"Operating system","score":0.25374019145965576}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8994550704956055},{"id":"https://openalex.org/C553261973","wikidata":"https://www.wikidata.org/wiki/Q14579","display_name":"Linux kernel","level":2,"score":0.7030129432678223},{"id":"https://openalex.org/C74193536","wikidata":"https://www.wikidata.org/wiki/Q574844","display_name":"Kernel (algebra)","level":2,"score":0.6696239709854126},{"id":"https://openalex.org/C106189395","wikidata":"https://www.wikidata.org/wiki/Q176789","display_name":"Markov decision process","level":3,"score":0.6201211810112},{"id":"https://openalex.org/C2777735758","wikidata":"https://www.wikidata.org/wiki/Q817765","display_name":"Path (computing)","level":2,"score":0.5267704725265503},{"id":"https://openalex.org/C98045186","wikidata":"https://www.wikidata.org/wiki/Q205663","display_name":"Process (computing)","level":2,"score":0.48234885931015015},{"id":"https://openalex.org/C98763669","wikidata":"https://www.wikidata.org/wiki/Q176645","display_name":"Markov chain","level":2,"score":0.48055461049079895},{"id":"https://openalex.org/C198531522","wikidata":"https://www.wikidata.org/wiki/Q485146","display_name":"Sample (material)","level":2,"score":0.4322611689567566},{"id":"https://openalex.org/C159886148","wikidata":"https://www.wikidata.org/wiki/Q176645","display_name":"Markov process","level":2,"score":0.30600833892822266},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.27986615896224976},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.25374019145965576},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0},{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.0},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1093/comjnl/bxq091","is_oa":false,"landing_page_url":"https://doi.org/10.1093/comjnl/bxq091","pdf_url":null,"source":{"id":"https://openalex.org/S44643521","display_name":"The Computer Journal","issn_l":"0010-4620","issn":["0010-4620","1460-2067"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Computer Journal","raw_type":"journal-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.879.8964","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.879.8964","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://comjnl.oxfordjournals.org/content/54/11/1741.full.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","score":0.699999988079071,"display_name":"Peace, Justice and strong institutions"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2117282672","https://openalex.org/W2104198943","https://openalex.org/W2029936267","https://openalex.org/W2985981384","https://openalex.org/W2113324011","https://openalex.org/W2068961128","https://openalex.org/W1970298188","https://openalex.org/W3148706714","https://openalex.org/W3198596521","https://openalex.org/W2330493680"],"abstract_inverted_index":{"Readahead":[0],"is":[1,31],"an":[2,62],"important":[3],"technique":[4],"to":[5,33,40,71,81,103,114],"deal":[6],"with":[7,148],"the":[8,35,53,92,116,135,144,149,152,158,165],"huge":[9],"gap":[10],"between":[11],"disk":[12],"drives":[13],"and":[14,25,39,58,67,90,105,118,125,131,151],"applications.":[15],"It":[16],"has":[17],"become":[18],"a":[19],"standard":[20],"in":[21,137,161],"modern":[22],"operating":[23],"systems":[24],"advanced":[26],"storage":[27],"systems.":[28],"However,":[29],"it":[30,99],"difficult":[32],"develop":[34],"common":[36],"kernel":[37,54,163],"readahead":[38,59],"achieve":[41],"full":[42],"testing":[43],"coverage":[44],"of":[45,120],"all":[46],"cases.":[47],"In":[48],"this":[49],"paper,":[50],"we":[51,127],"formulate":[52],"read":[55,88],"handling,":[56],"caching":[57],"behavior":[60],"as":[61],"absorbing":[63],"Markov":[64],"decision":[65],"process,":[66],"present":[68,91,128],"performance":[69],"evaluations":[70,146],"compare":[72],"or":[73],"verify":[74],"various":[75],"readaheads.":[76,122],"We":[77],"also":[78],"introduce":[79],"algorithms":[80],"find":[82],"optimal":[83],"prefetching":[84,107,154],"policies":[85],"for":[86,164],"specific":[87],"pattern":[89],"convergence":[93],"analysis.":[94],"By":[95],"exploiting":[96],"sample-path-based":[97],"methods,":[98],"becomes":[100],"much":[101],"easier":[102],"evaluate":[104],"optimize":[106],"policies,":[108],"which":[109],"can":[110],"provide":[111],"valuable":[112],"informations":[113],"help":[115],"design":[117],"improvement":[119],"practical":[121],"For":[123],"illustration":[124],"verification,":[126],"two":[129],"examples":[130],"some":[132],"experiments":[133],"on":[134],"readaheads":[136],"Linux":[138,162],"kernel.":[139],"The":[140],"results":[141],"show":[142],"that":[143],"model-based":[145],"agree":[147],"practice":[150],"improved":[153],"policy":[155],"significantly":[156],"outperforms":[157],"original":[159],"one":[160],"specified":[166],"workloads.":[167]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":2}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}