{"id":36877,"date":"2019-10-31T22:14:28","date_gmt":"2019-10-31T19:14:28","guid":{"rendered":"https:\/\/prohoster.info\/blog\/yadro-linux-ne-mozhet-myagko-obrabatyvat-situatsii-s-nehvatkoj-pamyati\/"},"modified":"2019-10-31T22:14:28","modified_gmt":"2019-10-31T19:14:28","slug":"yadro-linux-ne-mozhet-myagko-obrabatyvat-situatsii-s-nehvatkoj-pamyati","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/yadro-linux-ne-mozhet-myagko-obrabatyvat-situatsii-s-nehvatkoj-pamyati","title":{"rendered":"Il kernel Linux non riesce a gestire dolcemente le situazioni di insufficienza di memoria","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Nella mailing list degli sviluppatori del kernel Linux <noindex><a rel=\"nofollow\" href=\"https:\/\/lkml.org\/lkml\/2019\/8\/4\/15\">sollevata<\/a><\/noindex> la questione della gestione della situazione di esaurimento della memoria libera in Linux:<\/p>\n<blockquote>\n<p>Esiste un problema che infastidisce molte persone da anni e che pu\u00f2 essere riprodotto in meno di pochi minuti sull'ultima versione del kernel Linux 5.2.6. Tutti i parametri del kernel sono impostati sui valori predefiniti.<\/p>\n<p>Passi:<\/p>\n<ul>\n<li class=\"l\"> Caricamento con il parametro \u00abmem=4G\u00bb.\n<li class=\"l\"> Disattiviamo il supporto per lo swap (sudo swapoff -a).\n<li class=\"l\"> Avviamo qualsiasi browser web, ad esempio, Chrome\/Chromium o\/ed Firefox.\n<li class=\"l\"> Iniziamo ad aprire schede con siti web e osserviamo come diminuisce la quantit\u00e0 di memoria libera.\n<\/ul>\n<p>Non appena si verifica una situazione in cui una nuova scheda richiede pi\u00f9 memoria RAM di quella disponibile, il sistema si blocca quasi completamente. Avrete difficolt\u00e0 persino a spostare il cursore del mouse. L'indicatore del disco rigido lampeggia incessantemente (non capisco perch\u00e9). Non riuscirete a lanciare nuove applicazioni n\u00e9 a chiudere quelle attualmente in esecuzione.<\/p>\n<p>Questa piccola crisi pu\u00f2 durare qualche minuto o pi\u00f9 a lungo. Suppongo che il sistema non dovrebbe comportarsi cos\u00ec. Penso che sia necessario fare qualcosa per evitare tali \u00abcongelamenti\u00bb.<\/p>\n<p>Sono quasi sicuro che sia possibile modificare alcuni parametri sysctl per evitare situazioni simili, ma qualcosa mi suggerisce che ci\u00f2 dovrebbe essere fatto di default per tutti, poich\u00e9 gli utenti non tecnici, di fronte a un problema del genere, potrebbero semplicemente rinunciare all'uso di Linux e non avrebbero voglia di cercare soluzioni su Google.\n<\/p><\/blockquote>\n<p>In <noindex><a rel=\"nofollow\" href=\"https:\/\/www.reddit.com\/r\/linux\/comments\/cmg48b\/lets_talk_about_the_elephant_in_the_room_the\/\">commenti<\/a><\/noindex> su Reddit alcuni utenti propongono di abilitare lo swap, ma questo non risolve il problema, lo rimanda solo e spesso lo aggrava. Come possibile soluzione futura potrebbe essere coinvolto il nuovo <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=49842\">4.20<\/a><\/noindex> e migliorato nel kernel <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51051\">5.2<\/a><\/noindex> sottosistema PSI (Pressure Stall Information), che consente di analizzare le informazioni sui tempi di attesa per ottenere varie risorse (CPU, memoria, input\/output). Questo sottosistema permette di monitorare la mancanza di memoria in una fase iniziale, identificare la fonte dei problemi e terminare applicazioni non importanti, senza arrivare a effetti visibili per l'utente. <\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51231\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0441\u043f\u0438\u0441\u043a\u0435 \u0440\u0430\u0441\u0441\u044b\u043b\u043a\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u044f\u0434\u0440\u0430 Linux \u043f\u043e\u0434\u043d\u044f\u0442\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0441 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u0438 \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u044f \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 \u0432 Linux: \u0418\u0437\u0432\u0435\u0441\u0442\u043d\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0434\u043e\u043d\u0438\u043c\u0430\u0435\u0442 \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u043e \u043b\u044e\u0434\u0435\u0439 \u043d\u0430 \u043f\u0440\u043e\u0442\u044f\u0436\u0435\u043d\u0438\u0438 \u043c\u043d\u043e\u0433\u0438\u0445 \u043b\u0435\u0442 \u0438 \u043a\u043e\u0442\u043e\u0440\u0443\u044e \u043c\u043e\u0436\u043d\u043e \u0432\u043e\u0441\u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0441\u0442\u0438 \u043c\u0435\u043d\u044c\u0448\u0435, \u0447\u0435\u043c \u0437\u0430 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043c\u0438\u043d\u0443\u0442 \u043d\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u044f\u0434\u0440\u0430 Linux 5.2.6. \u0412\u0441\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u044f\u0434\u0440\u0430 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u044b \u0432 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e. \u0428\u0430\u0433\u0438: \u0417\u0430\u0433\u0440\u0443\u0436\u0430\u0435\u043c\u0441\u044f \u0441 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u043c &#171;mem=4G&#187;. \u0412\u044b\u043a\u043b\u044e\u0447\u0430\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-36877","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\" content=\"\u0412 \u0441\u043f\u0438\u0441\u043a\u0435 \u0440\u0430\u0441\u0441\u044b\u043b\u043a\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u044f\u0434\u0440\u0430 Linux \u043f\u043e\u0434\u043d\u044f\u0442\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0441 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u0438 \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u044f \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 \u0432 Linux: .\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/it\/blog\/news\/yadro-linux-ne-mozhet-myagko-obrabatyvat-situatsii-s-nehvatkoj-pamyati\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"it_IT\" \/>\n\t\t<meta property=\"og:site_name\" content=\"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\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u042f\u0434\u0440\u043e Linux \u043d\u0435 \u043c\u043e\u0436\u0435\u0442 \u043c\u044f\u0433\u043a\u043e \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0442\u044c \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u0438 \u0441 \u043d\u0435\u0445\u0432\u0430\u0442\u043a\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0412 \u0441\u043f\u0438\u0441\u043a\u0435 \u0440\u0430\u0441\u0441\u044b\u043b\u043a\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u044f\u0434\u0440\u0430 Linux \u043f\u043e\u0434\u043d\u044f\u0442\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0441 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u0438 \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u044f \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 \u0432 Linux: .\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/it\/blog\/news\/yadro-linux-ne-mozhet-myagko-obrabatyvat-situatsii-s-nehvatkoj-pamyati\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2019-10-31T19:14:28+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2019-10-31T19:14:28+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Il kernel Linux non pu\u00f2 gestire dolcemente le situazioni di mancanza di memoria | ProHoster","description":"Nella mailing list degli sviluppatori del kernel Linux \u00e8 stata sollevata la questione della gestione della situazione di esaurimento della memoria libera in Linux: .","canonical_url":"https:\/\/prohoster.info\/it\/blog\/news\/yadro-linux-ne-mozhet-myagko-obrabatyvat-situatsii-s-nehvatkoj-pamyati","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\u042f\u0434\u0440\u043e Linux \u043d\u0435 \u043c\u043e\u0436\u0435\u0442 \u043c\u044f\u0433\u043a\u043e \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0442\u044c \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u0438 \u0441 \u043d\u0435\u0445\u0432\u0430\u0442\u043a\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 | ProHoster","og:description":"\u0412 \u0441\u043f\u0438\u0441\u043a\u0435 \u0440\u0430\u0441\u0441\u044b\u043b\u043a\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u044f\u0434\u0440\u0430 Linux \u043f\u043e\u0434\u043d\u044f\u0442\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0441 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u0438 \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u044f \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 \u0432 Linux: .","og:url":"https:\/\/prohoster.info\/it\/blog\/news\/yadro-linux-ne-mozhet-myagko-obrabatyvat-situatsii-s-nehvatkoj-pamyati","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":"2019-10-31T19:14:28+00:00","article:modified_time":"2019-10-31T19:14:28+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"36877","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-22 05:09:19","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-02-28 14:40:56","updated":"2026-01-22 05:09:19","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/36877","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=36877"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/36877\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/media?parent=36877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/categories?post=36877"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/tags?post=36877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}