{"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\/it\/blog\/news\/primenenie-asinhronnoj-buferizirovannoj-zapisi-na-baze-io_uring-do-80-raz-snizilo-zaderzhki-v-xfs","title":{"rendered":"L'uso della scrittura bufferizzata asincrona basata su io_uring ha ridotto le latenze in XFS fino a 80 volte.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u00c8 stata pubblicata una serie di patch per l'inclusione nel kernel Linux 5.20, che aggiunge il supporto per la scrittura bufferizzata asincrona nel file system XFS tramite il meccanismo io_uring. I testi preliminari delle performance, eseguiti utilizzando lo strumento fio (1 thread, dimensione del blocco 4KB, 600 secondi, scrittura sequenziale), mostrano un aumento del numero di operazioni di input\/output al secondo (IOPS) da 77k a 209k, una velocit\u00e0 di trasferimento dati da 314MB\/s a 854MB\/s e una diminuzione delle latenze da 9600ns a 120ns (80 volte).  scritture sequenziali:  senza patch  con 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>Per chi \u00e8 interessato allo stato di io_uring a met\u00e0 2022, si consiglia di consultare le diapositive e la registrazione video della presentazione di Kernel Recipes 2022. Vengono menzionati in modo generale i cambiamenti gi\u00e0 inclusi nel kernel e quelli pianificati, ad esempio si pu\u00f2 notare il supporto per:  <\/p>\n<ul>\n<li class=\"l\"> accept() multi-shot.\n<li class=\"l\"> multiplo (multi-shot) recv() \u2014 i test mostrano un incremento del 6-8% \u2014 da 1150000 a 1200000 RPS.\n<li class=\"l\"> aggiornamenti e correzioni nella libreria liburing, aggiunta di documentazione e test.  <\/ul>\n<p>Nel contesto della portabilit\u00e0 di io_uring, viene menzionata una notevole somiglianza con \u00abI\/O Rings\u00bb, utilizzata nel sottosistema Direct Storage in Windows 11, cos\u00ec come la possibilit\u00e0 di implementare un funzionamento multipiattaforma, ma tra le altre piattaforme, solo FreeBSD \u00e8 menzionata dall'autore con un punto interrogativo.    <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=\"Riproduci 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 \/>Fonte: <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 5.0.0.1 - 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 \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 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\u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u041f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \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 \u043d\u0430 \u0431\u0430\u0437\u0435 io_uring \u0434\u043e 80 \u0440\u0430\u0437 \u0441\u043d\u0438\u0437\u0438\u043b\u043e \u0437\u0430\u0434\u0435\u0440\u0436\u043a\u0438 \u0432 XFS | ProHoster\" \/>\n\t\t<meta property=\"og: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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