{"title":"持久内存文件系统中的快速查找","authors":"Matthew Curtis-Maury, Yash Trivedi","doi":"10.1109/HPEC55821.2022.9926368","DOIUrl":null,"url":null,"abstract":"Persistent Memory (PM) offers byte-addressability and persistence on the memory bus, and delivers dramatic performance improvements over traditional storage media. While many file systems have been optimized for PM, a large fraction of processing time is generally spent locating the required data in PM due to the standard use of extent-trees for location indexing. This paper presents HashTag, a cache of PM locations for use in PM file systems with support for snapshot creation. We evaluate HashTag across a range of configurations to determine the impact of various location caching options on filesystem performance. These lessons can inform the design of future caching solutions in PM filesystems.","PeriodicalId":200071,"journal":{"name":"2022 IEEE High Performance Extreme Computing Conference (HPEC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"HashTag: Fast Lookup in a Persistent Memory File System\",\"authors\":\"Matthew Curtis-Maury, Yash Trivedi\",\"doi\":\"10.1109/HPEC55821.2022.9926368\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Persistent Memory (PM) offers byte-addressability and persistence on the memory bus, and delivers dramatic performance improvements over traditional storage media. While many file systems have been optimized for PM, a large fraction of processing time is generally spent locating the required data in PM due to the standard use of extent-trees for location indexing. This paper presents HashTag, a cache of PM locations for use in PM file systems with support for snapshot creation. We evaluate HashTag across a range of configurations to determine the impact of various location caching options on filesystem performance. These lessons can inform the design of future caching solutions in PM filesystems.\",\"PeriodicalId\":200071,\"journal\":{\"name\":\"2022 IEEE High Performance Extreme Computing Conference (HPEC)\",\"volume\":\"28 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-09-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2022 IEEE High Performance Extreme Computing Conference (HPEC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/HPEC55821.2022.9926368\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 IEEE High Performance Extreme Computing Conference (HPEC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/HPEC55821.2022.9926368","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
HashTag: Fast Lookup in a Persistent Memory File System
Persistent Memory (PM) offers byte-addressability and persistence on the memory bus, and delivers dramatic performance improvements over traditional storage media. While many file systems have been optimized for PM, a large fraction of processing time is generally spent locating the required data in PM due to the standard use of extent-trees for location indexing. This paper presents HashTag, a cache of PM locations for use in PM file systems with support for snapshot creation. We evaluate HashTag across a range of configurations to determine the impact of various location caching options on filesystem performance. These lessons can inform the design of future caching solutions in PM filesystems.
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