{"id":34910,"date":"2019-10-31T22:01:11","date_gmt":"2019-10-31T19:01:11","guid":{"rendered":"https:\/\/prohoster.info\/blog\/kompaniya-oracle-vypustila-yadro-unbreakable-enterprise-kernel-r5u2\/"},"modified":"2019-10-31T22:01:11","modified_gmt":"2019-10-31T19:01:11","slug":"kompaniya-oracle-vypustila-yadro-unbreakable-enterprise-kernel-r5u2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/kompaniya-oracle-vypustila-yadro-unbreakable-enterprise-kernel-r5u2","title":{"rendered":"La soci\u00e9t\u00e9 Oracle a publi\u00e9 le noyau Unbreakable Enterprise Kernel R5U2.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Soci\u00e9t\u00e9 Oracle <noindex><a rel=\"nofollow\" href=\"https:\/\/blogs.oracle.com\/linux\/announcing-the-general-availability-of-the-unbreakable-enterprise-kernel-release-5-update-2\">une mise \u00e0 jour du micrologiciel et un SDK pour l'environnement SGX, dans lequel elle a tent\u00e9 de bloquer l'attaque par contournement. Les m\u00e9thodes propos\u00e9es d'attaque ne sont actuellement applicables qu'aux processeurs Intel, mais il n'est pas exclu que LVI soit adapt\u00e9 \u00e0 d'autres processeurs susceptibles d'\u00eatre sujets aux attaques de type Meltdown.<\/a><\/noindex> deuxi\u00e8me mise \u00e0 jour fonctionnelle pour le noyau <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48813\">Noyau d'entreprise infrangible R5<\/a><\/noindex>, positionn\u00e9 pour un usage dans la distribution Oracle Linux en tant qu'alternative au paquet standard avec noyau de Red Hat Enterprise Linux. Le noyau est disponible pour les architectures x86_64 et ARM64 (aarch64). Les codes sources du noyau, y compris la d\u00e9coupe en patches s\u00e9par\u00e9s, <noindex><a rel=\"nofollow\" href=\"https:\/\/oss.oracle.com\/git\/?p=linux-uek.git;a=summary\">publi\u00e9s<\/a><\/noindex> dans le d\u00e9p\u00f4t Git public d'Oracle.<\/p>\n<p>Le paquet Noyau d'entreprise infrangible 5 est bas\u00e9 sur le noyau <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=47513\">Linux 4.14<\/a><\/noindex> (UEK R4 \u00e9tait bas\u00e9 sur le noyau 4.1), enrichi de nouvelles fonctionnalit\u00e9s, optimisations et correctifs, et v\u00e9rifi\u00e9 pour la compatibilit\u00e9 avec la majorit\u00e9 des applications fonctionnant sous RHEL, sp\u00e9cifiquement optimis\u00e9 pour travailler avec les logiciels et mat\u00e9riels industriels d'Oracle. Les paquets d'installation et src du noyau UEK R5U1 <noindex><a rel=\"nofollow\" href=\"https:\/\/yum.oracle.com\/oracle-linux-7.html\">pr\u00e9par\u00e9s<\/a><\/noindex> pour Oracle Linux 7.5 et 7.6 (il n'y a aucune restriction \u00e0 l'utilisation de ce noyau dans des versions similaires de RHEL, CentOS et Scientific Linux). <\/p>\n<p>Am\u00e9liorations cl\u00e9s <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.oracle.com\/cd\/E93554_01\/F16744\/html\/index.html\">am\u00e9liorations<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\"> Les correctifs pour la mise en \u0153uvre du syst\u00e8me PSI (Pressure Stall Information) ont \u00e9t\u00e9 transf\u00e9r\u00e9s, permettant d'analyser les informations sur le temps d'attente pour obtenir diverses ressources (CPU, m\u00e9moire, entr\u00e9e\/sortie) pour des t\u00e2ches ou ensembles de processus sp\u00e9cifiques dans un cgroup. Gr\u00e2ce \u00e0 PSI, les gestionnaires en espace utilisateur peuvent \u00e9valuer plus pr\u00e9cis\u00e9ment le niveau de charge du syst\u00e8me et la nature de la lenteur par rapport \u00e0 la Charge Moyenne ;\n<li class=\"l\"> Pour cgroup2, le contr\u00f4leur de ressources cpuset a \u00e9t\u00e9 activ\u00e9, fournissant un m\u00e9canisme pour limiter le placement des t\u00e2ches sur les n\u0153uds de m\u00e9moire et CPU NUMA, permettant n'utiliser que les ressources d\u00e9finies pour le groupe de t\u00e2ches via l'interface du syst\u00e8me de fichiers pseudo cpuset ;\n<li class=\"l\"> Un cadre ktask a \u00e9t\u00e9 mis en \u0153uvre pour le parall\u00e9lisme des t\u00e2ches dans le noyau, consommant des ressources CPU consid\u00e9rables. Par exemple, avec ktask, le parall\u00e9lisme des op\u00e9rations de nettoyage des plages de m\u00e9moire ou le traitement de la liste inode peut \u00eatre organis\u00e9 ;\n<li class=\"l\"> Dans DTrace <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.oracle.com\/cd\/E93554_01\/F16744\/html\/uek5-features-dtrace.html\">ajout\u00e9<\/a><\/noindex> prise en charge de la capture de paquets via libpcap gr\u00e2ce \u00e0 la nouvelle action &#171;pcap(skb,proto)&#187;. Par exemple &#171;dtrace -n &#8216;ip:::send { pcap((void *)arg0, PCAP_IP); }'&#187;;\n<li class=\"l\"> Des nouvelles versions du noyau <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.oracle.com\/cd\/E93554_01\/F16744\/html\/uek5-features-fs.html\">transf\u00e9r\u00e9es<\/a><\/noindex> corrections dans la mise en \u0153uvre des syst\u00e8mes de fichiers btrfs, CIFS, ext4, OCFS2 et XFS ;\n<li class=\"l\"> Du noyau 4.19 <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.oracle.com\/cd\/E93554_01\/F16744\/html\/uek5-features-virt.html\">transf\u00e9r\u00e9es<\/a><\/noindex> modifications li\u00e9es au support des hyperviseurs KVM, Xen et Hyper-V ;\n<li class=\"l\">  <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.oracle.com\/cd\/E93554_01\/F16744\/html\/ol_drvupd.html\">Mis \u00e0 jour<\/a><\/noindex> drivers de dispositifs et prise en charge \u00e9tendue des disques NVMe (transfert des modifications des noyaux 4.18 \u00e0 4.21) ;\n<li class=\"l\"> Des ajustements ont \u00e9t\u00e9 appliqu\u00e9s pour optimiser les performances sur les plateformes ARM.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Source : <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50798\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Oracle \u0432\u044b\u043f\u0443\u0441\u0442\u0438\u043b\u0430 \u0432\u0442\u043e\u0440\u043e\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u0434\u043b\u044f \u044f\u0434\u0440\u0430 Unbreakable Enterprise Kernel R5, \u043f\u043e\u0437\u0438\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u043c\u043e\u0433\u043e \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0432 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0435 Oracle Linux \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0430\u043b\u044c\u0442\u0435\u0440\u043d\u0430\u0442\u0438\u0432\u044b \u0448\u0442\u0430\u0442\u043d\u043e\u043c\u0443 \u043f\u0430\u043a\u0435\u0442\u0443 \u0441 \u044f\u0434\u0440\u043e\u043c \u0438\u0437 Red Hat Enterprise Linux. \u042f\u0434\u0440\u043e \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e \u0434\u043b\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440 x86_64 \u0438 ARM64 (aarch64). \u0418\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u044f\u0434\u0440\u0430, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u0440\u0430\u0437\u0431\u0438\u0432\u043a\u0443 \u043d\u0430 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0435 \u043f\u0430\u0442\u0447\u0438, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u0432 \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u043e\u043c Git-\u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0438 Oracle. \u041f\u0430\u043a\u0435\u0442 Unbreakable Enterprise [&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-34910","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Oracle \u0432\u044b\u043f\u0443\u0441\u0442\u0438\u043b\u0430 \u0432\u0442\u043e\u0440\u043e\u0435.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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