{"id":113046,"date":"2024-01-22T11:28:02","date_gmt":"2024-01-22T09:28:02","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dlya-yadra-linux-podgotovleny-optimizaczii-povyshayushhie-proizvoditelnost-planirovshhikov-vvoda-vyvoda"},"modified":"2024-01-22T11:28:02","modified_gmt":"2024-01-22T09:28:02","slug":"dlya-yadra-linux-podgotovleny-optimizaczii-povyshayushhie-proizvoditelnost-planirovshhikov-vvoda-vyvoda","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/dlya-yadra-linux-podgotovleny-optimizaczii-povyshayushhie-proizvoditelnost-planirovshhikov-vvoda-vyvoda","title":{"rendered":"Ottimizzazioni sono state preparate per il kernel Linux, aumentando le prestazioni degli scheduler I\/O","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Jens Axboe, creatore di io_uring e degli scheduler I\/O CFQ, Deadline e Noop, ha continuato i suoi esperimenti con l'ottimizzazione dell'I\/O nel kernel Linux. Questa volta, la sua attenzione si \u00e8 concentrata sugli scheduler I\/O BFQ e mq-deadline, che si sono rivelati un collo di bottiglia almeno nei casi di unit\u00e0 NVMe ad alta velocit\u00e0.     <\/p>\n<p>Come ha dimostrato lo studio della situazione, una delle principali ragioni della prestazione subottimale dei sottomoduli dei pianificatori di input\/output \u00e8 stata rappresentata dai problemi di contenimento dei lock (\"lock contention\", tentativo di ottenere un lock detenuto da un altro thread). Grazie alle misure mirate a ridurre la competizione nella gestione dei lock, come la serializzazione della pianificazione e l'inserimento delle richieste, la velocit\u00e0 operativa dei pianificatori \u00e8 aumentata notevolmente in diverse situazioni (in IOPS).     <\/p>\n<p>Durante il test dello scheduler BFQ con lo strumento fio, le prestazioni sono aumentate da 567K a 1551K operazioni I\/O al secondo, mentre la competizione per i lock \u00e8 diminuita dal 96% al 30%. Nel caso di mq-deadline, le prestazioni dopo l'applicazione delle patch proposte utilizzando un'unit\u00e0 NVMe sono aumentate da 1070K a 2560K operazioni I\/O al secondo (IOPS), mentre la competizione per i lock \u00e8 diminuita dal 94% al 23%.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60474\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0419\u0435\u043d\u0441 \u042d\u043a\u0441\u0431\u043e (Jens Axboe), \u0441\u043e\u0437\u0434\u0430\u0442\u0435\u043b\u044c io_uring \u0438 \u043f\u043b\u0430\u043d\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u043e\u0432 \u0432\u0432\u043e\u0434\u0430\/\u0432\u044b\u0432\u043e\u0434\u0430 CFQ, Deadline \u0438 Noop, \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u043b \u0441\u0432\u043e\u0438 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u044b \u0441 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u0432\u0432\u043e\u0434\u0430\/\u0432\u044b\u0432\u043e\u0434\u0430 \u0432 \u044f\u0434\u0440\u0435 Linux. \u041d\u0430 \u044d\u0442\u043e\u0442 \u0440\u0430\u0437 \u043f\u043e\u0434 \u0435\u0433\u043e \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u043f\u043e\u043f\u0430\u043b\u0438 \u043f\u043b\u0430\u043d\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0438 \u0432\u0432\u043e\u0434\u0430\/\u0432\u044b\u0432\u043e\u0434\u0430 BFQ \u0438 mq-deadline, \u043e\u043a\u0430\u0437\u0430\u0432\u0448\u0438\u0435\u0441\u044f \u0443\u0437\u043a\u0438\u043c \u043c\u0435\u0441\u0442\u043e\u043c \u043a\u0430\u043a \u043c\u0438\u043d\u0438\u043c\u0443\u043c \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u043d\u044b\u0445 \u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u0435\u0439 NVMe. \u041a\u0430\u043a \u043f\u043e\u043a\u0430\u0437\u0430\u043b\u043e \u0438\u0437\u0443\u0447\u0435\u043d\u0438\u0435 \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u0438, \u043e\u0434\u043d\u043e\u0439 \u0438\u0437 \u043a\u043b\u044e\u0447\u0435\u0432\u044b\u0445 \u043f\u0440\u0438\u0447\u0438\u043d \u043d\u0435\u043e\u043f\u0442\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c [&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-113046","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" 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preparate per il kernel Linux, aumentando le prestazioni degli scheduler I\/O | ProHoster","description":"Jens Axboe, creatore di io_uring e degli scheduler I\/O CFQ, Deadline e Noop, ha continuato i suoi esperimenti con l'ottimizzazione dell'I\/O nel kernel Linux.","canonical_url":"https:\/\/prohoster.info\/it\/blog\/news\/dlya-yadra-linux-podgotovleny-optimizaczii-povyshayushhie-proizvoditelnost-planirovshhikov-vvoda-vyvoda","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \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","og:type":"article","og:title":"\ud83e\udd47\u0414\u043b\u044f \u044f\u0434\u0440\u0430 Linux 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Linux.","og:url":"https:\/\/prohoster.info\/it\/blog\/news\/dlya-yadra-linux-podgotovleny-optimizaczii-povyshayushhie-proizvoditelnost-planirovshhikov-vvoda-vyvoda","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2024-01-22T09:28:02+00:00","article:modified_time":"2024-01-22T09:28:02+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/113046","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/comments?post=113046"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/113046\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/media?parent=113046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/categories?post=113046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/tags?post=113046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}