{"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\/it\/blog\/novosti-interneta\/v-fedora-32-namereny-vklyuchit-earlyoom-dlya-rannego-reagirovaniya-na-nehvatku-pamyati","title":{"rendered":"In Fedora 32 si prevede di includere earlyoom per una risposta rapida alla carenza di memoria.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Pubblicato<\/a><\/noindex> piano<\/a><\/noindex> attivazione<\/a><\/noindex> per impostazione predefinita in Fedora 32 il processo in background earlyoom<\/a><\/noindex> per una risposta rapida alla carenza di memoria nel sistema. Se la quantit\u00e0 di memoria disponibile \u00e8 inferiore a un valore specificato, earlyoom invier\u00e0 un SIGTERM (se la memoria libera \u00e8 inferiore al 10%) o un SIGKILL (< 5%) forzando (terminer\u00e0 il processo che consuma pi\u00f9 memoria, avendo il punteggio pi\u00f9 alto in \/proc\/*\/oom_score), senza portare il sistema a liberare i buffer di sistema. Earlyoom permetter\u00e0 di rispondere pi\u00f9 rapidamente alla carenza di memoria, evitando di attivare il gestore OOM (Out Of Memory) nel kernel, che entra in azione quando la situazione diventa critica e il sistema, di solito, non risponde pi\u00f9 alle azioni dell'utente.<\/p>\n

Nelle versioni future di Fedora si prende in considerazione la possibilit\u00e0<\/a><\/noindex> di includere un gestore della carenza di memoria low-memory-monitor<\/a><\/noindex>, che utilizza l'interfaccia apparsa nel kernel Linux 5.2<\/a><\/noindex> \/proc\/pressure\/memory per valutare la carenza di memoria nel sistema, ma a differenza di earlyoom, non termina immediatamente i processi, ma invia tramite DBus una notifica della necessit\u00e0 di ridurre il consumo di memoria (se dopo ci\u00f2 la situazione non si normalizza, pu\u00f2 essere attivato OOM Killer<\/a><\/noindex> del kernel). Low-memory-monitor richiede modifiche alle applicazioni, quindi \u00e8 considerato una soluzione per un futuro remoto, che potr\u00e0 essere implementata dopo l'adattamento delle applicazioni GNOME. <\/p>\n

Per monitorare la situazione di carenza di memoria nelle applicazioni in Glib 2.63.3<\/a><\/noindex> \u00e8 stata aggiunta un'API GMemoryMonitor<\/a><\/noindex>, che consente<\/a><\/noindex> per monitorare i segnali dal low-memory-monitor e prendere misure (ad esempio, l'applicazione pu\u00f2 liberare la memoria utilizzata per la cache, salvare file, avviare la raccolta dei rifiuti, tentare di ridurre la frammentazione della memoria o terminare processi ausiliari inattivi). Il supporto per
\nGMemoryMonitor \u00e8 stato aggiunto anche a xdg-desktop-portal per essere utilizzato in applicazioni isolate fornite in formato flatpak.<\/p>\n

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

Fonte: 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 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