{"id":104512,"date":"2022-06-27T03:36:42","date_gmt":"2022-06-27T01:36:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/primenenie-asinhronnoj-buferizirovannoj-zapisi-na-baze-io_uring-do-80-raz-snizilo-zaderzhki-v-xfs"},"modified":"2022-06-27T03:36:42","modified_gmt":"2022-06-27T01:36:42","slug":"primenenie-asinhronnoj-buferizirovannoj-zapisi-na-baze-io_uring-do-80-raz-snizilo-zaderzhki-v-xfs","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/primenenie-asinhronnoj-buferizirovannoj-zapisi-na-baze-io_uring-do-80-raz-snizilo-zaderzhki-v-xfs","title":{"rendered":"Anvendelsen af asynkron bufferopskrivning baseret p\u00e5 io_uring har reduceret latensen i XFS med op til 80 gange.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>En r\u00e6kke patches er offentliggjort til inkluderende i Linux-kern 5.20, som tilf\u00f8jer support for asynkron buffret skrivning til filsystemet XFS ved hj\u00e6lp af io_uring mekanismen. Pr\u00e6limin\u00e6re ydelsestests udf\u00f8rt med v\u00e6rkt\u00f8jet fio (1 tr\u00e5d, blokst\u00f8rrelse 4kb, 600 sekunder, sekventiel skrivning) viser en stigning i input\/output-operationer pr. sekunder (IOPS) fra 77k til 209k, dataoverf\u00f8rselshastighed fra 314MB\/s til 854MB\/s og et fald i latens fra 9600ns til 120ns (80 gange). sekventielle skrivninger: uden patch med patch libaio psync iops: 77k 209k 195K 233K bw: 314MB\/s 854MB\/s 790MB\/s 953MB\/s clat: 9600ns 120ns 540ns 3000ns      <\/p>\n<p>For dem, der er interesserede i tilstanden af io_uring midt i 2022, anbefales det at se slides og videooptagelse af pr\u00e6sentationen fra Kernel Recipes 2022. \u00c6ndringer, der allerede er inkluderet i kernen og planlagte \u00e6ndringer, n\u00e6vnes kort, f.eks. kan man notere sig support for:  <\/p>\n<ul>\n<li class=\"l\"> multi-shot accept().\n<li class=\"l\"> flere (multi-shot) recv() \u2014 i testene en stigning p\u00e5 6-8% \u2014 fra 1150000 til 1200000 RPS.\n<li class=\"l\"> opdateringer og rettelser i liburing-biblioteket, tilf\u00f8jelse af dokumentation og tests.  <\/ul>\n<p>I forbindelse med portabiliteten af io_uring n\u00e6vnes der i slides betydelig lighed med \u00abI\/O Rings\u00bb, som anvendes i Direct Storage subsystemet i Windows 11, samt muligheden for at implementere tv\u00e6rplatformsarbejde, men blandt de andre platforme n\u00e6vnes kun FreeBSD med et sp\u00f8rgsm\u00e5lstegn.    <center>  <div class=\"youtube-placeholder\" data-id=\"v--rVT4RsCE\" onclick=\"loadVideo(this)\">\r\n        <img decoding=\"async\" src=\"https:\/\/img.youtube.com\/vi\/v--rVT4RsCE\/hqdefault.jpg\" alt=\"Afspil video\" loading=\"lazy\" width=\"480\" height=\"360\" style=\"width:100%;height:auto;\">\r\n        <div class=\"play-button\"><\/div>\r\n    <\/div><\/center><br \/>\n<br \/>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57412\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430 \u0441\u0435\u0440\u0438\u044f \u043f\u0430\u0442\u0447\u0435\u0439 \u0434\u043b\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432 \u044f\u0434\u0440\u043e Linux 5.20, \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u0430\u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u043e\u0439 \u0431\u0443\u0444\u0435\u0440\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0437\u0430\u043f\u0438\u0441\u0438 \u0432 \u0444\u0430\u0439\u043b\u043e\u0432\u0443\u044e \u0441\u0438\u0441\u0442\u0435\u043c\u0443 XFS \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 io_uring. \u041f\u0440\u0435\u0434\u0432\u0430\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0442\u0435\u0441\u0442\u044b \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438, \u043f\u0440\u043e\u0432\u0435\u0434\u0451\u043d\u043d\u044b\u0435 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f fio (1 \u043f\u043e\u0442\u043e\u043a, \u0440\u0430\u0437\u043c\u0435\u0440 \u0431\u043b\u043e\u043a\u0430 4\u043a\u0431, 600 \u0441\u0435\u043a\u0443\u043d\u0434, \u043f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u0430\u044f \u0437\u0430\u043f\u0438\u0441\u044c), \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u044e\u0442 \u0443\u0432\u0435\u043b\u0438\u0447\u0435\u043d\u0438\u0435 \u0447\u0438\u0441\u043b\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044f \u0432\u0432\u043e\u0434\u0430\/\u0432\u044b\u0432\u043e\u0434\u0430 \u0432 \u0441\u0435\u043a\u0443\u043d\u0434\u0443 (IOPS) \u043e\u0442 77k \u0434\u043e 209k, \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u043e\u0442 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-104512","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430 \u0441\u0435\u0440\u0438\u044f \u043f\u0430\u0442\u0447\u0435\u0439 \u0434\u043b\u044f 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