{"id":54854,"date":"2020-01-06T00:00:00","date_gmt":"2020-01-05T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/v-fedora-32-namereny-vklyuchit-earlyoom-dlya-rannego-reagirovaniya-na-nehvatku-pamyati"},"modified":"2020-02-18T14:02:54","modified_gmt":"2020-02-18T11:02:54","slug":"v-fedora-32-namereny-vklyuchit-earlyoom-dlya-rannego-reagirovaniya-na-nehvatku-pamyati","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/v-fedora-32-namereny-vklyuchit-earlyoom-dlya-rannego-reagirovaniya-na-nehvatku-pamyati","title":{"rendered":"Fedora 32-s plaanitakse lisada earlyoom m\u00e4lu nappuse varajaseks reageerimiseks","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Avaldatud<\/a><\/noindex> plaani<\/a><\/noindex> lubamine<\/a><\/noindex> vaikimisi Fedora 32 taustprotsess earlyoom<\/a><\/noindex> varajase reageerimise jaoks s\u00fcsteemi m\u00e4lupuudusele. Kui vaba m\u00e4lu maht langeb alla m\u00e4\u00e4ratud v\u00e4\u00e4rtuse, siis earlyoom saadab SIGTERM (vaba m\u00e4lu alla 10%) v\u00f5i SIGKILL (< 5%), sundides l\u00f5petama k\u00f5ige intensiivsemalt m\u00e4lu kasutava protsessi (millel on k\u00f5rgeim v\u00e4\u00e4rtus \/proc\/*\/oom_score), mitte viies s\u00fcsteemi seisundit s\u00fcsteemivahendite puhastamiseni. Earlyoom v\u00f5imaldab kiiremat reageerimist m\u00e4lupuudusele, v\u00e4ltides OOM (Out Of Memory) k\u00e4itaja k\u00e4ivitumist tuumas, mis aktiveerub, kui olukord muutub kriitiliseks ja s\u00fcsteem tavaliselt ei reageeri kasutaja toimingutele.<\/p>\n

Hiljemates Fedora v\u00e4ljaannetes kaalutakse v\u00f5imalust<\/a><\/noindex> m\u00e4lupuuduse k\u00e4itaja aktiveerimiseks low-memory-monitor<\/a><\/noindex>, mis kasutab Linuxi tuumas saadud 5.2<\/a><\/noindex> liidest \/proc\/pressure\/memory s\u00fcsteemis m\u00e4lupuuduse hindamiseks, kuid erinevalt earlyoom-ist ei l\u00f5peta see protsesse kohe, vaid saadab DBus kaudu teate m\u00e4lu tarbimise v\u00e4hendamise vajadusest (kui olukord p\u00e4rast seda ei normaliseeru, on v\u00f5imalik aktiveerida OOM Killer<\/a><\/noindex> tuumas). Low-memory-monitor vajab rakenduste muutmist, seet\u00f5ttu kaalutakse seda lahendust kaugema perspektiivina, mida saab rakendada p\u00e4rast GNOME rakenduste kohandamist. <\/p>\n

Rakendustes m\u00e4lupuuduse olukorra j\u00e4lgimiseks on Glib 2.63.3<\/a><\/noindex> lisatud API GMemoryMonitor<\/a><\/noindex>, mis v\u00f5imaldab<\/a><\/noindex> l\u00fclitama madala m\u00e4lu monitori signaale ja v\u00f5tma meetmeid (n\u00e4iteks rakendus v\u00f5ib vabastada m\u00e4lu, mida kasutatakse vahem\u00e4lu jaoks, salvestada faile, algatada pr\u00fcgikoristuse, proovida v\u00e4hendada m\u00e4lu fragmentatsiooni v\u00f5i l\u00f5petada ootel abistavaid protsesse). Toetust
\nGMemoryMonitor on samuti lisatud xdg-desktop-portalisse, et kasutada isoleeritud rakendustes, mis tarnitakse flatpak formaadis.<\/p>\n

<\/a><\/noindex><\/p>\n

Allikas: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u043f\u043b\u0430\u043d \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0432 Fedora 32 \u0444\u043e\u043d\u043e\u0432\u043e\u0433\u043e \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430 earlyoom \u0434\u043b\u044f \u0440\u0430\u043d\u043d\u0435\u0433\u043e \u0440\u0435\u0430\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0430 \u043d\u0435\u0445\u0432\u0430\u0442\u043a\u0443 \u043f\u0430\u043c\u044f\u0442\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \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 \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 SIGTERM (\u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 \u043c\u0435\u043d\u044c\u0448\u0435 10%) \u0438\u043b\u0438 SIGKILL (< 5%) \u043f\u0440\u0438\u043d\u0443\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e (\u0437\u0430\u0432\u0435\u0440\u0448\u0438\u0442 \u0440\u0430\u0431\u043e\u0442\u0443 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430, \u043d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u0430\u043a\u0442\u0438\u0432\u043d\u043e \u043f\u043e\u0442\u0440\u0435\u0431\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u043f\u0430\u043c\u044f\u0442\u044c (\u0438\u043c\u0435\u044e\u0449\u0435\u0433\u043e \u0441\u0430\u043c\u043e\u0435 \u0431\u043e\u043b\u044c\u0448\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \/proc\/*\/oom_score), \u043d\u0435 \u0434\u043e\u0432\u043e\u0434\u044f \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 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