{"id":76724,"date":"2020-04-04T07:42:13","date_gmt":"2020-04-04T05:42:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kompaniya-oracle-opublikovala-yadro-unbreakable-enterprise-kernel-6"},"modified":"2020-04-04T07:42:13","modified_gmt":"2020-04-04T05:42:13","slug":"kompaniya-oracle-opublikovala-yadro-unbreakable-enterprise-kernel-6","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/kompaniya-oracle-opublikovala-yadro-unbreakable-enterprise-kernel-6","title":{"rendered":"Oracle on avalikustanud Unbreakable Enterprise Kernel 6 tuuma","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Oracle Corporation <noindex><a rel=\"nofollow\" href=\"https:\/\/blogs.oracle.com\/linux\/announcing-the-unbreakable-enterprise-kernel-release-6-for-oracle-linux\">esituse<\/a><\/noindex> esimene stabiilne v\u00e4ljalase <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.oracle.com\/en\/operating-systems\/uek\/6\/relnotes6.0\/\">Unbreakable Enterprise Kernel 6<\/a><\/noindex> (UEK R6), laiendatud Linuxi kernelite kogum, mis on m\u00f5eldud Oracle Linuxi jaotises kasutamiseks alternatiivi Red Hat Enterprise Linuxi vaikimisi paketile. Kerneli on saadaval ainult x86_64 ja ARM64 (aarch64) arhitektuuride jaoks. Kerneli l\u00e4htekood, sealhulgas eraldi pat\u0161ide jagamine, <noindex><a rel=\"nofollow\" href=\"https:\/\/oss.oracle.com\/git\/?p=linux-uek.git;a=summary\">avaldatud<\/a><\/noindex> on saadaval Oracle'i avalikus Git-repositooriumis.<\/p>\n<p>Unbreakable Enterprise Kernel 6 pakett p\u00f5hineb kernelil <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51881\">Linux 5.4<\/a><\/noindex> (UEK R5 p\u00f5hines kernelil 4.14), mis on t\u00e4iustatud uute funktsioonide, optimeerimise ja parandustega ning on testitud \u00fchilduvuse osas enamiku RHEL-is t\u00f6\u00f6tavate rakendustega. See on spetsiaalselt optimeeritud t\u00f6\u00f6stuslike rakenduste ja Oracle'i riistvara jaoks. UEK R6 installimise ja src-paketid on ette valmistatud Oracle Linuxi jaoks <noindex><a rel=\"nofollow\" href=\"https:\/\/yum.oracle.com\/oracle-linux-7.html\">7.x<\/a><\/noindex> ja <noindex><a rel=\"nofollow\" href=\"https:\/\/yum.oracle.com\/oracle-linux-8.html\">8.x<\/a><\/noindex>. Toetuse haru 6.x l\u00f5petatakse, UEK R6 rakendamiseks tuleb s\u00fcsteem uuendada Oracle Linuxi 7-le (mingeid takistusi ei ole selle kerneliga sarnaste RHEL, CentOS ja Scientific Linuxi versioonide kasutamiseks). <\/p>\n<p>Peamised <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.oracle.com\/en\/operating-systems\/uek\/6\/relnotes6.0\/uek-features-changes.html\">uuendused<\/a><\/noindex> Unbreakable Enterprise Kernel 6:<\/p>\n<ul>\n<li class=\"l\"> Laiendatud tugi 64-bitistes ARM (aarch64) arhitektuuriga s\u00fcsteemidele.\n<li class=\"l\"> Cgroup v2 k\u00f5ikide v\u00f5imaluste tugi on rakendatud.\n<li class=\"l\"> Ktask raamistik on ellu viidud, et paraleelseid CPU ressursse tarbivaid \u00fclesandeid jagada. N\u00e4iteks v\u00f5imaldab ktask m\u00e4lulehtede puhastamise v\u00f5i inode nimekirjade t\u00f6\u00f6tlemise operatsioonide paraleelset korraldamist.\n<li class=\"l\"> Kasutusele on v\u00f5etud kswapd paraleelne versioon, et hallata m\u00e4lulehtede asendamise operatsioone as\u00fcnkroonses re\u017eiimis, v\u00e4hendades otseste (s\u00fcnkroonsete) asendamisoperatsioonide arvu. Kui vabad m\u00e4lulehed v\u00e4henevad, skaneerib kswapd mittekasutatud lehti, mida saab vabastada.\n<li class=\"l\"> Toetatakse tuuma ja p\u00fcsivara pildi terviklikkuse kontrollimist digitaalse allkirja alusel, kui tuuma k\u00e4ivitamine toimub Kexec mehhanismi kaudu (tuuma laadimine juba k\u00e4ivitatud s\u00fcsteemist).\n<li class=\"l\"> Virtuaalse m\u00e4lu haldamise s\u00fcsteemi j\u00f5udlust on optimeeritud, m\u00e4lulehtede ja m\u00e4lupuhvri puhastamise efektiivsust on parandatud ning mitteeraldatud m\u00e4lulehtede (page faults) k\u00e4itlemist on t\u00e4iendatud.\n<li class=\"l\"> NVDIMM tugi on laiendatud, n\u00fc\u00fcd v\u00f5ib m\u00e4\u00e4ratud p\u00fcsiv m\u00e4lu kasutada traditsioonilise RAM-ina.\n<li class=\"l\"> Onustatud DTrace 2.0 d\u00fcnaamiliste silumisv\u00f5imaluste s\u00fcsteemi, mis <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51287\">t\u00f5lgitud<\/a><\/noindex> kasutab eBPF kernelit. DTrace t\u00f6\u00f6tab n\u00fc\u00fcd eBPF peal, sarnaselt sellele, kuidas olemasolevad j\u00e4lgimisvahendid Linuxis t\u00f6\u00f6tavad eBPF peal.\n<li class=\"l\"> Parendused on tehtud OCFS2 (Oracle Cluster File System) failis\u00fcsteemis.\n<li class=\"l\"> Parandatud Btrfs failis\u00fcsteemi tuge. Lisatud v\u00f5imalus rakendada Btrfs juurkataloogidel. Installatsiooniprogramm on saanud uue valiku, et valida Btrfs seadmete vormindamisel. Lisatud v\u00f5imalus paigutada vahetused Btrfs l\u00f5ikudele. Btrfs toetab n\u00fc\u00fcd ka ZStandard algoritmi kasutamisest s\u00f5ltuvat kompressiooni.\n<li class=\"l\"> \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430 \u0434\u043b\u044f \u0430\u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u043e\u0433\u043e \u0432\u0432\u043e\u0434\u0430\/\u0432\u044b\u0432\u043e\u0434\u0430 &#8212; io_uring, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u0435\u043d \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u043e\u0439 \u043f\u043e\u043b\u043b\u0438\u043d\u0433\u0430 \u0432\u0432\u043e\u0434\u0430\/\u0432\u044b\u0432\u043e\u0434\u0430 \u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c\u044e \u0440\u0430\u0431\u043e\u0442\u044b \u043a\u0430\u043a \u0441 \u0431\u0443\u0444\u0435\u0440\u0438\u0437\u0430\u0446\u0438\u0435\u0439, \u0442\u0430\u043a \u0438 \u0431\u0435\u0437 \u0431\u0443\u0444\u0435\u0440\u0438\u0437\u0430\u0446\u0438\u0438.  \u041f\u043e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 io_uring \u043e\u0447\u0435\u043d\u044c \u0431\u043b\u0438\u0437\u043e\u043a \u043a SPDK \u0438 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u043e\u043f\u0435\u0440\u0435\u0436\u0430\u0435\u0442 libaio \u043f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 \u0432\u043a\u043b\u044e\u0447\u0451\u043d\u043d\u044b\u043c \u043f\u043e\u043b\u043b\u0438\u043d\u0433\u043e\u043c. \u0414\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f io_uring \u0432 \u043a\u043e\u043d\u0435\u0447\u043d\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u0445, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0445 \u0432 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f, \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u0430 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 liburing, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u0432\u044b\u0441\u043e\u043a\u043e\u0443\u0440\u043e\u0432\u043d\u0435\u0432\u0443\u044e \u043e\u0431\u0432\u044f\u0437\u043a\u0443 \u043d\u0430\u0434 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u043c \u044f\u0434\u0440\u0430;\n<li class=\"l\"> Lisatud re\u017eiimi tugi <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50123\">Adiantum<\/a><\/noindex> kiireks kettamaandamiseks.\n<li class=\"l\"> Lisa toetust tihendusele, kasutades algoritmi <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=45058\">Zstandard<\/a><\/noindex> (zstd).\n<li class=\"l\"> Failis\u00fcsteemis ext4 on kasutusele v\u00f5etud 64-bitised ajatempli m\u00e4rgid superbloki v\u00e4ljades.\n<li class=\"l\"> XFS-i on lisatud vahendid failis\u00fcsteemi terviklikkuse oleku j\u00e4lgimiseks t\u00f6\u00f6 ajal ja fsck'i t\u00e4itmise staatuse hankimiseks reaalajas.\n<li class=\"l\"> TCP-\u0441\u0442\u0435\u043a \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043f\u0435\u0440\u0435\u0432\u0435\u0434\u0451\u043d \u043d\u0430 \u043c\u043e\u0434\u0435\u043b\u044c &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/lwn.net\/Articles\/766564\/\">Early Departure Time<\/a><\/noindex>&#187; \u0432\u043c\u0435\u0441\u0442\u043e &#171;As Fast As Possible&#187; \u043f\u0440\u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0435 \u043f\u0430\u043a\u0435\u0442\u043e\u0432. \u0414\u043b\u044f UDP \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430  GRO (Generic Receive Offload). \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043f\u0440\u0438\u0451\u043c\u0430 \u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0438 TCP-\u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 zero-copy.\n<li class=\"l\"> On rakendatud TLS-protokolli teostus tuumatasemel (KTLS), mida saab n\u00fc\u00fcd kasutada mitte ainult edastatavate, vaid ka vastuv\u00f5etavate andmete jaoks.\n<li class=\"l\"> Vaikimisi on tulem\u00fc\u00fcriks rakendatud<br \/>\nnftables. Valikuliselt on lisatud tugi <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48117\">bpfilter<\/a><\/noindex>.<\/p>\n<li class=\"l\"> Lisatud tugi XDP (eXpress Data Path) alamkavale, mis v\u00f5imaldab Linuxis k\u00e4ivitada BPF-programme v\u00f5rgujuhtme tasemel, pakkudes otse juurdep\u00e4\u00e4su paketi DMA-puhvrile ja skbuff v\u00f5rgu pileti jaotamise etapis.\n<li class=\"l\"> Parandatud ja aktiveeritud UEFI Secure Boot re\u017eiimi kasutamisel. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51591\">Lockdown<\/a><\/noindex>, mis piirab root-kasutaja juurdep\u00e4\u00e4su tuumale ja blokeerib UEFI Secure Boot\u2019i \u00fcmbersuunamisteed. N\u00e4iteks lukustamisre\u017eiimis piiratakse juurdep\u00e4\u00e4su \/dev\/mem, \/dev\/kmem, \/dev\/port, \/proc\/kcore, debugfs, kprobesi silumise re\u017eiimile, mmiotrace, tracefs, BPF, PCMCIA CIS (Kaardi teave struktuur), m\u00f5nede ACPI liideste ja CPU MSR-registerite juurde, blokeeritakse kexec_file ja kexec_load kutseid, keelatakse magamisre\u017eiimi \u00fcleminek, piiratakse PCI-seadmete DMA kasutamine, keeldutakse ACPI koodi importimisest EFI muutujatest, ei lubata sisendi\/v\u00e4ljundi portidega manipuleerimist, sealhulgas katkestusnumbrite ja sisendi\/v\u00e4ljundi portide muutmist j\u00e4rjestusportide jaoks.\n<li class=\"l\"> Lisatud on toetus t\u00f5hustatud IBRS (Enhanced Indirect Branch Restricted Speculation) k\u00e4skudele, mis v\u00f5imaldavad d\u00fcnaamiliselt lubada ja keelata spetsiifiliste k\u00e4skude spekulatiivset t\u00e4itmist katkemiste, s\u00fcsteemikutsete ja konteksti vahetuste t\u00f6\u00f6tlemise ajal. Kui Enhanced IBRS tuge on saadaval, rakendatakse seda meetodit Spectre V2 r\u00fcnnakute kaitsmiseks Retpoline\u2019i asemel, kuna see v\u00f5imaldab saavutada paremat j\u00f5udlust.\n<li class=\"l\"> Parandatud kaitset kataloogides, kuhu k\u00f5igil on kirjutamis\u00f5igus. Nendes kataloogides on keelatud FIFO-failide ja failide loomine, mis kuuluvad kasutajatele, kes ei \u00fchti katalooge kuuluvate isikutega, millel on sticky-lipp.\n<li class=\"l\"> ARM-s\u00fcsteemidel on vaikimisi lubatud tuumade aadressiruumi juhuslikkus (KASLR). Aarch64 jaoks on lubatud pointerite autentimine.\n<li class=\"l\"> \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 &#171;NVMe over Fabrics TCP&#187;.\n<li class=\"l\"> Lisatud virtio-pmem draiver, mis v\u00f5imaldab juurdep\u00e4\u00e4su f\u00fc\u00fcsilisse aadressiruumi peegelduvatele salvestusseadmetele, nagu NVDIMM.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Allikas: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52670\">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 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u043f\u0435\u0440\u0432\u044b\u0439 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u043e\u0439 \u0432\u044b\u043f\u0443\u0441\u043a Unbreakable Enterprise Kernel 6 (UEK R6), \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u043e\u0439 \u0441\u0431\u043e\u0440\u043a\u0438 \u044f\u0434\u0440\u0430 Linux, \u043f\u043e\u0437\u0438\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u043c\u043e\u0439 \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 \u0442\u043e\u043b\u044c\u043a\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 [&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-76724","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Oracle 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