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Storage"],"published-print":{"date-parts":[[2020,2,29]]},"abstract":"<jats:p>The design and implementation of traditional file systems typically use the one-to-one mapping of logical files to their physical metadata representations. File system optimizations generally follow this rigid mapping and miss opportunities for an entire class of optimizations.<\/jats:p>\n          <jats:p>We designed, implemented, and evaluated a composite-file file system, which allows many-to-one mappings of files to metadata. Through exploring different mapping strategies, our empirical evaluation shows up to a 27% performance improvement under web server and software development workloads, for both disks and SSDs. This result demonstrates that our approach of relaxing file-to-metadata mapping is promising.<\/jats:p>","DOI":"10.1145\/3366684","type":"journal-article","created":{"date-parts":[[2020,3,3]],"date-time":"2020-03-03T07:03:57Z","timestamp":1583219037000},"page":"1-18","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":6,"title":["The Composite-File File System"],"prefix":"10.1145","volume":"16","author":[{"given":"Shuanglong","family":"Zhang","sequence":"first","affiliation":[{"name":"Google, Mountain View, CA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert","family":"Roy","sequence":"additional","affiliation":[{"name":"Florida State University, Tallahassee, FL"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leah","family":"Rumancik","sequence":"additional","affiliation":[{"name":"Florida State University, Tallahassee, FL"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"An-I Andy","family":"Wang","sequence":"additional","affiliation":[{"name":"Florida State University, Tallahassee, FL"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2020,3,2]]},"reference":[{"key":"e_1_2_1_1_1","volume-title":"Proceedings of the 4th USENIX Conference on File and Storage Technologies (FAST\u201905)","author":"Abd-El-Malek M."},{"key":"e_1_2_1_2_1","volume-title":"Proceedings of the 20th International Conference on Very Large Data Bases (VLDB\u201994)","author":"Agrawal R."},{"key":"e_1_2_1_3_1","volume-title":"Web Performance: Cache Efficiency Exercise. 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