{"id":123511,"date":"2025-04-15T21:05:13","date_gmt":"2025-04-15T19:05:14","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kompaniya-oracle-opublikovala-yadro-unbreakable-enterprise-kernel-8"},"modified":"2026-02-08T18:56:02","modified_gmt":"2026-02-08T16:56:02","slug":"kompaniya-oracle-opublikovala-yadro-unbreakable-enterprise-kernel-8","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/kompaniya-oracle-opublikovala-yadro-unbreakable-enterprise-kernel-8","title":{"rendered":"Oracle'i ettev\u00f5te on v\u00e4lja andnud Unbreakable Enterprise Kernel 8 tuuma.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Oracle'i ettev\u00f5te tutvustas esmakordselt Unbreakable Enterprise Kernel 8 (UEK R8) stabiilset v\u00e4ljaannet, Linuxi tuuma varianti, mida arendatakse Oracle Linuxi jaotises kasutamiseks Red Hat Enterprise Linuxi vaikimisi tuumapaketile alternatiivina. Tuuma on saadaval ainult x86_64 ja ARM64 (aarch64) arhitektuuridel. Tuuma l\u00e4htekood, sealhulgas eraldi plaastrite jagamine, on avaldatud Oracle'i avalikus Git-repositooriumis.        <\/p>\n<p>Unbreakable Enterprise Kernel 8 pakett p\u00f5hineb Linuxi tuumal 6.12 (UEK R7 versioon p\u00f5hines tuumal 5.4 ja RHEL 10 beetaversioonis pakuti tuuma 6.11), millele on lisatud uusi funktsioone, optimeerimisi ja parandusfakte, ning see on kontrollitud \u00fchilduvusest enamiku RHEL-is t\u00f6\u00f6tavate rakendustega, optimeerides Oracle'i t\u00f6\u00f6stuslikku tarkvara ja riistvara. UEK R8 tuuma installimis- ja src-paketid on ette valmistatud Oracle Linux 9.5 jaoks (puuduvad takistused selle tuuma kasutamiseks sarnastes RHEL, CentOS, Alma Linux ja Rocky Linux versioonides).       <\/p>\n<p>Unbreakable Enterprise Kernel 8 peaeesm\u00e4rgid:  <\/p>\n<ul>\n<li class=\"l\"> UEK-i tuumade komponentide jaotamine on muudetud eraldi paketideks. Tuuma moodulid on eraldatud aluseks olevast tuuma pildist ja viidud kogudesse, mida tarnitakse eraldi pakettidena: kernel-uek-modules-core (alumine minimaalne), kernel-uek-modules (taskudeks), kernel-uek-modules-desktop, kernel-uek-modules-extra-netfilter, kernel-uek-modules-usb ja kernel-uek-modules-wireless. Seotud utiliidid on eraldatud aluspakkumisest kernel-uek-core eraldi paketti kernel-uek-tools. Konfiguratsioonifailid, milles loetletakse laadimisk\u00f5lbmatud moodulid, on \u00fcmber nimetatud 'blacklist' - 'denylist', j\u00e4rgides kaasava terminoloogia kasutamise algatust. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/server\/\"   title=\"serverite\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1678\">serverite<\/a>), kernel-uek-modules-desktop, kernel-uek-modules-extra-netfilter, kernel-uek-modules-usb ja kernel-uek-modules-wireless. Kliendile vajalikud utiliidid on eraldatud p\u00f5hikogumist kernel-uek-core eraldi paketina kernel-uek-tools. Konfiguratsioonifailid, mis sisaldavad keelatud laadimise moodulite loendit, on \u00fcmber nimetatud \u2019blacklist\u2019 asemel \u2019denylist\u2019 osana kaasava terminoloogia kasutamise algatusest.\n<li class=\"l\"> On lisatud tugi Intel SGX2 (Software Guard Extensions) riistvaralise rakenduse jaoks EDMM (Enclave Dynamic Memory Management) mehhanismile, mis v\u00f5imaldab hallata p\u00e4\u00e4su eraldi m\u00e4lu lehtedele enclave'i ja d\u00fcnaamiliselt lisada\/ eemaldada lehti tsisternist.\n<li class=\"l\"> Intel Quick Assist Technology (QAT) seadmete toetav Intel QAT draiver on lisatud toetuse neljandas p\u00f5lvkonnas Intel Xeoni protsessoritele.\n<li class=\"l\"> Intel Quick Assist Technology (QAT) draiverisse on lisatud tugi 4. p\u00f5lvkonna Intel Xeon protsessoritele.\n<li class=\"l\"> Lisatud on s\u00fcsteem jagatud lukustuste (\u2019split-lock\u2019) tuvastamiseks, mis tekivad, kui juurdep\u00e4\u00e4s toimub joondamata andmetele m\u00e4lu kaudu, kuna aatomaaraku korral andmed ristuvad kahe CPU vahem\u00e4lu real. Sellised lukustused p\u00f5hjustavad m\u00e4rkimisv\u00e4\u00e4rset j\u00f5udluse langust (1000 ts\u00fcklit aeglasem kui aatomaaraku, kui andmed j\u00e4\u00e4vad \u00fchte vahem\u00e4lu reale).\n<li class=\"l\"> Uus meetod Intel ja AMD CPU Retbleed haavatavuste kaitseks, kasutades s\u00fcgavuse j\u00e4lgimist, on rakendatud. See ei aeglusta t\u00f6\u00f6d nii palju kui varasem staatiline kaitse Retbleedi vastu.\n<li class=\"l\"> x86 s\u00fcsteemides on tagatud sekundaarsete CPU tuumade samaaegne aktiveerimine, mis on v\u00e4hendanud tuuma laadimisaja pikka suurt tuumade arvuga s\u00fcsteemidel.\n<li class=\"l\"> Lisatud on kernel'i k\u00e4surea parameeter \u2019ia32_emulation\u2019, mis v\u00f5imaldab laadimise etapis sisse ja v\u00e4lja l\u00fclitada 32-bitilise re\u017eiimi emulatsiooni toetuse x86-64 arhitektuurile koostatud kernel'ites.\n<li class=\"l\"> Vaikimisi kasutatakse CFS (Completely Fair Scheduler) asemel EEVDF (Earliest Eligible Virtual Deadline First) \u00fclesande planeerijat. Uus planeerija arvestab j\u00e4rgmise protsessi valikul protsesse, mis ei ole saanud piisavalt protsessoriv\u00f5imsust v\u00f5i on saanud ebaproportsionaalselt palju protsessoriaega. Esimeses juhul sunnitakse juhtimise andmine protsessile, samas kui teises juhul l\u00fckatakse see tagasi. Vana CFS planeerija kasutas erilise t\u00e4helepanu vajavate protsesside m\u00e4\u00e4ramiseks heuristikat ja peeneid seadistusi, samas kui uus planeerija j\u00e4lgib neid selgemalt ja ei vaja peenh\u00e4\u00e4lestust. EEVDF v\u00e4hendab viivitusi \u00fclesannete t\u00e4itmisel, millega CFS-il oli planeerimisega probleeme.\n<li class=\"l\"> DTrace 2.0 d\u00fcnaamilise silumise s\u00fcsteemi toetamine on j\u00e4tkatud, mis on n\u00fc\u00fcd \u00fcmber l\u00fclitatud eBPF tuumapeal olevatele s\u00fcsteemidele. DTrace 2.0 t\u00f6\u00f6tab eBPF peal, sarnaselt sellele, kuidas olemasolevad j\u00e4lgimisriistad Linuxis t\u00f6\u00f6tavad.\n<li class=\"l\"> KVM h\u00fcperviisis on lubatud kasutada kuni 4096 virtuaalset CPU-d (VCPU).\n<li class=\"l\"> KTLS-i, kerneli taseme TLS-protokolli rakenduse kasutamine j\u00e4tkub.\n<li class=\"l\"> Uuendatud RDRAND pseudojuhuslike arvude generaatori rakendus, mis vastutab seadme \/dev\/random toimimise eest, on muudetud kasutama BLAKE2s r\u00e4sifunktsiooni SHA1 asemel entropia segamise operatsioonides. See muudatus on v\u00f5imaldanud suurendada pseudojuhuslike arvude generaatori turvalisust. Juhuslikest numbritest kiiremini k\u00e4tte saamiseks via getrandom() s\u00fcsteemikutses on rakendatud vDSO (virtuaalne d\u00fcnaamiline jagatud objekt) mehhanism, mis toob s\u00fcsteemikutsumise t\u00f6\u00f6tleja kernelist kasutajaruumi, et v\u00e4ltida konteksti vahetust.\n<li class=\"l\"> Toetatud on BIG TCP laiend, mis v\u00f5imaldab suurendada TCP-paketi maksimaalsed suurused kuni 4 GB, et optimeerida andmekeskuste kiirete sisev\u00f5rkude toimimist. Selline paketi suuruse suurendamine, arvestades 16-bitise pealkirja v\u00e4lja suurust, saavutatakse 'jumbo' paketid, mille suurus IP-pealkirjas on seatud 0, ja tegelik suurus edastatakse eraldi 32-bitises v\u00e4lja eraldi k\u00fclgehangitud pealkirjas.\n<li class=\"l\"> V\u00f5rgusoketeks on rakendatud SO_RESERVE_MEM valik, millega saab soketi jaoks reserveerida kindla hulga m\u00e4lu, mis j\u00e4\u00e4b alati soketile kaccessible ja ei ole eraldatud. Selle valiku kasutamine v\u00f5imaldab suurendada j\u00f5udlust, v\u00e4hendades v\u00f5rgu protokollis m\u00e4lutegevuste eraldamise ja tagastamise operatsioone, eriti s\u00fcsteemi m\u00e4lu puuduse tekkimise korral.\n<li class=\"l\"> Pakettide planeerija fq (Fair Queuing) j\u00f5udluse optimeerimine on suurendanud l\u00e4bilaskev\u00f5imet 5% ulatuses suurte koormuste korral tcp_rr (TCP Request\/Response) testis ja 13% piiramatu UDP-pakettide voogude korral.\n<li class=\"l\"> S\u00fcsteemi tuuma v\u00f5rgu struktuuride reorganiseerimine, et parandada protsessori andmek\u00e4itlemise efektiivsust, on suurendanud TCP-protokolli j\u00f5udlust s\u00fcsteemides, mis teenindavad suurt hulka paralleelseid p\u00e4ringuid.\n<li class=\"l\"> Oracle'i andmebaasi automaatseks salvestuse haldamiseks on lisatud ASMLib 3 teegi tugi.\n<li class=\"l\"> T\u00f6\u00f6d on tehtud io_uring as\u00fcnkroonse sisendi\/v\u00e4ljundi mehhanismi j\u00f5udluse optimeerimiseks ja turvalisuse parandamiseks. Lisatud io_uring baasil p\u00f5hinevad optimeerimised failis\u00fcsteemidele XFS ja Ext4, mis v\u00f5imaldavad paralleelset otsefailide kirjutamist mitmes l\u00f5imes.\n<li class=\"l\"> Parendatud on Btrfs failis\u00fcsteemi toetust. Trim\/discard toetavatele seadmetele on vaikimisi aktiveeritud mountivalik \u2018discard=async\u2019, mis v\u00f5imaldab neid toiminguid kohe k\u00f5igi failis\u00fcsteemide jaoks as\u00fcnkroonselt teostada. Lisatud on toetuse kompressitud andmete saadetamiseks ja vastuv\u00f5tmiseks ilma teisendustega. Lisatud on toetuse kirjutamiseks plokkidena, mis on suuremad kui 64 KB. Kvotade haldamine on lihtsustatud. Lisatud on toetuse kloneeritud seadmete montimiseks. Parendatud on kirjutamise kontrollide teostamine NOCOW re\u017eiimis (l\u00e4bilaskev\u00f5ime kasvas 9%). Lisatud on montimise valikud \u2019ignoremetacsums\u2019 ja \u2019ignoresuperflags\u2019 vale metap\u00e4ringu kontrollsummade ja superploki lippude ignoreerimiseks. Tagatud on seadmete eemaldamise, tasakaalustamise ja plokkide \u00fcmbersuunamise \u00fclesannete t\u00e4itmine paralleelse re\u017eiimiga.\n<li class=\"l\"> FS XFS-s on lubatud kasutada plokisuurust, mis \u00fcletab m\u00e4lu lehe suurust. Suured ulatusloendurid on lisatud v\u00e4ga suurtele virtuaalsetele ketastele. Failide sisu atomaarse p\u00fcsivuse (commit) re\u017eiim on lisatud. Pakutakse eksperimentaalset implementeerimist kontrollimiseks (fsck) ja FS-i taastamiseks online-re\u017eiimis.\n<li class=\"l\"> NFS-is on vaikimisi aktiveeritud READ_PLUS-operatsioon, mis on m\u00e4\u00e4ratletud NFS 4.2 spetsifikatsioonis ja mida rakendatakse selleks, et t\u00f5husamalt lugeda andmeid failidest, mis sisaldavad t\u00fchikuid.\n<li class=\"l\"> M\u00e4lu haldamise s\u00fcsteem on muudetud kasutama folio andmestruktuuri (m\u00e4lulehed). Folio\u2019d meenutavad \u00fchendatud m\u00e4lu lehti (compound pages), kuid nende semantika on paranenud ja t\u00f6\u00f6korraldus selgem.\n<li class=\"l\"> M\u00e4lu kaardistamise toiminguteks on rakendatud andmestruktuur \u2019maple tree\u2019, mis positsioneeritakse efektiivsemana v\u00f5rreldes \u2019red-black tree\u2019 struktuuriga. Maple tree on B-tree muude variant, mis toetab vahemike p\u00f5hjal indekseerimist ja on kavandatud vahem\u00e4lu t\u00f5husaks kasutamiseks. <a href=\"https:\/\/prohoster.info\/et\/server\/dts-riga\/\"  data-wpil-monitor-id=\"371\">kaasaegsete protsessorite<\/a>.\n<li class=\"l\"> Mmap-is on rakendatud blokeeringud individuaalsete VMA-de (Virtuaalne M\u00e4lupiirkond) tasemel, mis t\u00f5stavad multitehniliste rakenduste j\u00f5udlust.\n<li class=\"l\"> Lisatud on ptdesc andmestruktuur, mis optimeerib m\u00e4lu lehtede tabelitega t\u00f6\u00f6tamist, eraldades metaandmete struktuurid ja andmed m\u00e4lu lehtede jaoks.             <\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=63081\">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 8 (UEK R8), \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0430 \u044f\u0434\u0440\u0430 Linux, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\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 \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\u0439 \u043a\u043e\u0434 \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 \u0432 \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u043e\u043c Git-\u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0438 [&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-123511","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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 8 (UEK R8), \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0430 \u044f\u0434\u0440\u0430 Linux, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0433\u043e \u0434\u043b\u044f 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