{"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\/de\/blog\/news\/yadro-linux-ne-mozhet-myagko-obrabatyvat-situatsii-s-nehvatkoj-pamyati","title":{"rendered":"Der Linux-Kernel kann Situationen mit Speicherknappheit nicht sanft verarbeiten.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>In der Mailingliste der Linux-Kernel-Entwickler wurde das Thema <noindex><a rel=\"nofollow\" href=\"https:\/\/lkml.org\/lkml\/2019\/8\/4\/15\">aufgebracht<\/a><\/noindex> der Behandlung von Situationen mit ersch\u00f6pftem freiem Speicher in Linux:<\/p>\n<blockquote>\n<p>Es gibt ein bekanntes Problem, das viele Menschen seit Jahren plagt und das sich in weniger als wenigen Minuten in der neuesten Version des Linux-Kernels 5.2.6 reproduzieren l\u00e4sst. Alle Kernel-Parameter sind auf die Standardwerte gesetzt.<\/p>\n<p>Schritte:<\/p>\n<ul>\n<li class=\"l\"> Wir laden mit dem Parameter \u201emem=4G\u201c.\n<li class=\"l\"> Wir deaktivieren die Swap-Unterst\u00fctzung (sudo swapoff -a).\n<li class=\"l\"> Wir starten einen beliebigen Webbrowser, z. B. Chrome\/Chromium und\/oder Firefox.\n<li class=\"l\"> Wir beginnen, Tabs mit Websites zu \u00f6ffnen, und beobachten, wie der freie Speicher abnimmt.\n<\/ul>\n<p>Sobald eine Situation entsteht, in der ein neuer Tab mehr Arbeitsspeicher ben\u00f6tigt, als verf\u00fcgbar ist, h\u00e4ngt das System nahezu vollst\u00e4ndig. Sie werden Schwierigkeiten haben, die Maus zu bewegen. Die Festplattenanzeige wird ununterbrochen blinken (ich verstehe nicht warum). Sie k\u00f6nnen keine neuen Anwendungen starten oder die aktuell laufenden schlie\u00dfen.<\/p>\n<p>Diese kleine Krise kann Minuten oder l\u00e4nger dauern. Ich denke, das System sollte sich nicht so verhalten. Ich denke, es muss etwas unternommen werden, um solche \u201eH\u00e4nger\u201c zu vermeiden.<\/p>\n<p>Ich bin mir fast sicher, dass man einige sysctl-Parameter \u00e4ndern kann, um solche Situationen zu vermeiden, aber irgendetwas sagt mir, dass dies standardm\u00e4\u00dfig f\u00fcr alle erledigt werden sollte, denn technisch nicht versierte Nutzer, die mit einem solchen Problem konfrontiert werden, werden einfach die Nutzung von Linux aufgeben und nicht daran denken, L\u00f6sungen bei Google zu suchen.\n<\/p><\/blockquote>\n<p>Im <noindex><a rel=\"nofollow\" href=\"https:\/\/www.reddit.com\/r\/linux\/comments\/cmg48b\/lets_talk_about_the_elephant_in_the_room_the\/\">Kommentare<\/a><\/noindex> Auf Reddit schlagen einige Nutzer vor, Swap zu aktivieren, aber das l\u00f6st das Problem nicht, sondern schiebt es nur auf und versch\u00e4rft es oft. Eine m\u00f6gliche L\u00f6sung in der Zukunft k\u00f6nnte die in den Kernel eingef\u00fchrte <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=49842\">4.20<\/a><\/noindex> und verbesserte <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51051\">5.2<\/a><\/noindex> PSI (Pressure Stall Information)-Unterst\u00fctzung sein, die es erm\u00f6glicht, Informationen \u00fcber Wartezeiten beim Erhalt verschiedener Ressourcen (CPU, Speicher, Ein-\/Ausgabe) zu analysieren. Diese Unterst\u00fctzung erm\u00f6glicht es, den Mangel an Speicher fr\u00fchzeitig zu \u00fcberwachen, die Quelle der Probleme zu identifizieren und unwichtige Anwendungen zu beenden, ohne dass es zu merklichen Auswirkungen f\u00fcr den Nutzer kommt. <\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Quelle: <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 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