{"id":72251,"date":"2020-03-03T02:42:20","date_gmt":"2020-03-02T23:42:20","guid":{"rendered":"https:\/\/prohoster.info\/blog\/vypusk-obrabotchika-nehvatki-pamyati-earlyoom-1-4"},"modified":"2020-03-03T16:10:14","modified_gmt":"2020-03-03T13:10:14","slug":"vypusk-obrabotchika-nehvatki-pamyati-earlyoom-1-4","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-obrabotchika-nehvatki-pamyati-earlyoom-1-4","title":{"rendered":"Vyd\u00e1n\u00ed zpracovatele nedostatku pam\u011bti earlyoom 1.4","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po osmi m\u011bs\u00edc\u00edch v\u00fdvoje <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/rfjakob\/earlyoom\/releases\/tag\/v1.4\">byla vyd\u00e1na<\/a><\/noindex> vyd\u00e1n\u00ed background procesu <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/rfjakob\/earlyoom\">earlyoom 1.4<\/a><\/noindex>, kter\u00fd pravideln\u011b kontroluje objem dostupn\u00e9 pam\u011bti (MemAvailable, SwapFree) a sna\u017e\u00ed se v\u010das reagovat na vznikaj\u00edc\u00ed nedostatek pam\u011bti. K\u00f3d projektu je naps\u00e1n v jazyce C a <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/rfjakob\/earlyoom\">distribuov\u00e1no<\/a><\/noindex> pod licenci MIT.<\/p>\n<p>Pokud objem dostupn\u00e9 pam\u011bti klesne pod stanovenou hodnotu, earlyoom n\u00e1siln\u011b (odesl\u00e1n\u00edm SIGTERM nebo SIGKILL) ukon\u010d\u00ed proces, kter\u00fd m\u00e1 nejvy\u0161\u0161\u00ed spot\u0159ebu pam\u011bti (m\u00e1 nejvy\u0161\u0161\u00ed hodnotu \/proc\/*\/oom_score), ani\u017e by stav syst\u00e9mu dosp\u011bl do bodu vymaz\u00e1n\u00ed syst\u00e9mov\u00fdch buffer\u016f a p\u0159ek\u00e1\u017eel swapov\u00e1n\u00ed (handler OOM (Out Of Memory) v j\u00e1d\u0159e se aktivuje, kdy\u017e stav nedostatku pam\u011bti ji\u017e dos\u00e1hl kritick\u00fdch hodnot a obvykle v tuto chv\u00edli syst\u00e9m ji\u017e nereaguje na akce u\u017eivatele).<\/p>\n<p>Earlyoom podporuje odes\u00edl\u00e1n\u00ed ozn\u00e1men\u00ed o nevy\u017e\u00e1dan\u011b ukon\u010den\u00fdch procesech na pracovn\u00ed plochu (pomoc\u00ed notify-send), a tak\u00e9 poskytuje mo\u017enost definovat pravidla, ve kter\u00fdch lze pomoc\u00ed regul\u00e1rn\u00edch v\u00fdraz\u016f ur\u010dit n\u00e1zvy proces\u016f, jejich\u017e ukon\u010den\u00ed je preferov\u00e1no (mo\u017enost &#171;&#8212;prefer&#187;) nebo jejich\u017e zastaven\u00ed by se m\u011blo vyhnout (mo\u017enost &#171;&#8212;avoid&#187;). <\/p>\n<p>Hlavn\u00ed <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/rfjakob\/earlyoom#changelog\">zm\u011bny<\/a><\/noindex> v nov\u00e9m vyd\u00e1n\u00ed: <\/p>\n<ul>\n<li class=\"l\"> D\u00edky <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Lazy_loading\">odlo\u017een\u00e9ho na\u010d\u00edt\u00e1n\u00ed<\/a><\/noindex> atribut\u016fm proces\u016f je logika v\u00fdb\u011bru proces\u016f pro ukon\u010den\u00ed zrychlena o 50%;\n<li class=\"l\"> Zaji\u0161t\u011bno je zaznamen\u00e1n\u00ed UID ukon\u010dovan\u00e9ho procesu krom\u011b PID a jm\u00e9na procesu;\n<li class=\"l\"> P\u0159id\u00e1no zv\u00fdrazn\u011bn\u00ed ladic\u00edho logu sv\u011btle \u0161edou barvou;\n<li class=\"l\"> Bylo provedeno \u010di\u0161t\u011bn\u00ed k\u00f3du;\n<li class=\"l\"> Pokud to bylo mo\u017en\u00e9, pou\u017eito je deklarace lok\u00e1ln\u00edch prom\u011bnn\u00fdch pro bloky;\n<li class=\"l\"> P\u0159id\u00e1na mo\u017enost nastavit PATH_LEN pro n\u00e1hradu pevn\u011b zadan\u00e9 hodnoty velikosti buffera;\n<li class=\"l\"> Zaji\u0161t\u011bno spu\u0161t\u011bn\u00ed cppcheck, pokud je k dispozici;\n<li class=\"l\"> P\u0159id\u00e1n test v\u00fdkonnosti &#171;make bench&#187;;\n<li class=\"l\"> Roz\u0161\u00ed\u0159en soubor test\u016f (make test);\n<li class=\"l\"> Realizov\u00e1no je sn\u00ed\u017een\u00ed privilegii root v unit souboru systemd earlyoom.service. Tato zm\u011bna <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/rfjakob\/earlyoom\/pull\/158\">ru\u0161\u00ed<\/a><\/noindex> mo\u017enost GUI ozn\u00e1men\u00ed. Pro zapnut\u00ed GUI ozn\u00e1men\u00ed se doporu\u010duje vr\u00e1tit root pr\u00e1va odkomentov\u00e1n\u00edm &#171;DynamicUser=true&#187;. Vypnut\u00ed root tak\u00e9 <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/rfjakob\/earlyoom\/wiki\/proc-hidepid\">uv\u00e1d\u00ed<\/a><\/noindex> znemo\u017e\u0148uje z\u00edsk\u00e1n\u00ed informac\u00ed o spot\u0159eb\u011b pam\u011bti p\u0159i p\u0159ipojen\u00ed \/proc v re\u017eimu hidepid=1 nebo hidepid=2.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Zdroj: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52465\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0432\u043e\u0441\u044c\u043c\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0444\u043e\u043d\u043e\u0432\u043e\u0433\u043e \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430 earlyoom 1.4, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0435\u0440\u0438\u043e\u0434\u0438\u0447\u0435\u0441\u043a\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u0442 \u043e\u0431\u044a\u0435\u043c \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 (MemAvailable, SwapFree) \u0438 \u043f\u044b\u0442\u0430\u0435\u0442\u0441\u044f \u043d\u0430 \u0440\u0430\u043d\u043d\u0435\u0439 \u0441\u0442\u0430\u0434\u0438\u0438 \u043e\u0442\u0440\u0435\u0430\u0433\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043d\u0430 \u0432\u043e\u0437\u043d\u0438\u043a\u043d\u043e\u0432\u0435\u043d\u0438\u044f \u043d\u0435\u0445\u0432\u0430\u0442\u043a\u0438 \u043f\u0430\u043c\u044f\u0442\u0438. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438 \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0439 MIT. \u0415\u0441\u043b\u0438 \u043e\u0431\u044a\u0451\u043c \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 \u043c\u0435\u043d\u044c\u0448\u0435 \u0437\u0430\u0434\u0430\u043d\u043d\u043e\u0433\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f, \u0442\u043e earlyoom \u043f\u0440\u0438\u043d\u0443\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e (\u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 SIGTERM \u0438\u043b\u0438 SIGKILL) \u0437\u0430\u0432\u0435\u0440\u0448\u0438\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-72251","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=\"\u041f\u043e\u0441\u043b\u0435 \u0432\u043e\u0441\u044c\u043c\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0444\u043e\u043d\u043e\u0432\u043e\u0433\u043e \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri 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