{"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\/news\/kompaniya-oracle-opublikovala-yadro-unbreakable-enterprise-kernel-8","title":{"rendered":"Oracle on avaldanud Unbreakable Enterprise Kernel 8.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Oracle esitles esmakordselt Unbreakable Enterprise Kernel 8 (UEK R8) stabiilse versiooni, Linuxi tuuma variandi, mida arendatakse Oracle Linuxi jaotises kasutamiseks Red Hat Enterprise Linuxi vaikimisi pakettide alternatiivina. Tuum on saadaval ainult x86_64 ja ARM64 (aarch64) arhitektuuridele. Tuuma l\u00e4htekood, sealhulgas eraldi pat\u0161ide jagamine, on avalikustatud 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 parandusi, samuti on see testitud enamiku RHEL-is t\u00f6\u00f6tavate rakenduste \u00fchilduvuse osas ja optimeeritud Oracle'i t\u00f6\u00f6stuslikule tarkvarale ja riistvarale. UEK R8 tuuma installimis- ja src-paketid on valmistatud Oracle Linux 9.5 jaoks (tuuma kasutamiseks sarnastes RHEL, CentOS, Alma Linux ja Rocky Linux versioonides ei ole mingeid takistusi).       <\/p>\n<p>Unbreakable Enterprise Kernel 8 peamised uuendused:  <\/p>\n<ul>\n<li class=\"l\"> UEK tuuma komponentide jagamine on jagatud eraldi pakettideks. Tuumamoodulid on eraldatud tuuma p\u00f5hikujundusest ja viidud kogumitesse, mis on pakendatud eraldi pakettidena: kernel-uek-modules-core (p\u00f5himinimum), kernel-uek-modules (for <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/server\/\"   title=\"serverid\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1678\">serverid<\/a>), kernel-uek-modules-desktop, kernel-uek-modules-extra-netfilter, kernel-uek-modules-usb ja kernel-uek-modules-wireless. Seotud utiliidid on eraldatud p\u00f5hikomplektist kernel-uek-core eraldi paketiks kernel-uek-tools. Konfiguratsioonifailid, mis sisaldavad nimekirja laadimist keelatud moodulitest, on \u00fcmber nimetatud 'blacklist' nimelt 'denylist', et edendada kaasavat terminoloogiat.\n<li class=\"l\"> Oracle Cloudis kasutatavatele ARM Ampere s\u00fcsteemidele on loodud eraldi tuuma kogum kernel-uek64k, mille baasm\u00e4lulehek\u00fclje suurust on suurendatud 4 KB-lt 64 KB-le.\n<li class=\"l\"> Lisatud on tugi Intel SGX2 (Software Guard Extensions) riistvara rakendusele EDMM (Enclave Dynamic Memory Management), mis v\u00f5imaldab hallata juurdep\u00e4\u00e4su eraldi m\u00e4lulehek\u00fclgedele enklaavis ja d\u00fcnaamiliselt lisada\/eemaldada m\u00e4lulehek\u00fclgi enklaavi jaoks.\n<li class=\"l\"> Intel Quick Assist Technology (QAT) seadmete toetusega Intel QAT draiverisse on lisatud toetus 4. p\u00f5lvkonna Intel Xeon protsessoritele.\n<li class=\"l\"> On lisatud split-lock'i tuvastamise s\u00fcsteem ('split-lock'), mis tekib, kui s\u00fc\u00fcdistatakse mitte\u00fchtlaselt paigutatud andmetesse m\u00e4lus, kuna atomaarse k\u00e4su t\u00e4itmise ajal andmed \u00fcletavad kaks CPU vahem\u00e4lu rida. Sellised lukud p\u00f5hjustavad m\u00e4rkimisv\u00e4\u00e4rset j\u00f5udluse langust (1000 ts\u00fcklit aeglasemalt kui atomaarne operatsioon andmete puhul, mis j\u00f5uavad \u00fchte vahem\u00e4lu ritta).\n<li class=\"l\"> Rakendatud on uus meetod Intel ja AMD CPU Retbleed haavatavuste kaitsmiseks, mis kasutab kutses\u00fcgavuse j\u00e4lgimist, mis ei aeglusta t\u00f6\u00f6d nii palju kui varem olemas olnud Retbleed kaitse.\n<li class=\"l\"> X86 s\u00fcsteemides on tagatud sekundaarsete CPU tuumade samasugune aktiveerimine, mis on l\u00fchendanud kernelite laadimisaega s\u00fcsteemides, kus on palju tuumasid.\n<li class=\"l\"> Kernelile on lisatud k\u00e4surea parameeter 'ia32_emulation', mis v\u00f5imaldab k\u00e4ivitamise ajal lubada v\u00f5i keelata 32-bitise re\u017eiimi emulatsiooni toetust x86-64 arhitektuuriks koostatud kernelites.\n<li class=\"l\"> Vaikeselt on CFS (Completely Fair Scheduler) asemel kasutusel EEVDF (Earliest Eligible Virtual Deadline First) t\u00f6\u00f6\u00fclesannete planeerija. Uus planeerija arvestab j\u00e4rgmist protsessi valides neid protsesse, mis on saanud liiga v\u00e4he CPU ressursse v\u00f5i on saanud liiga palju CPU aega. Esimesel juhul sunnitakse protsessile juhtimise \u00fcleandmist, teises, vastupidi, l\u00fckatakse see edasi. Vana CFS planeerija kasutas t\u00e4helepanu vajavate protsesside m\u00e4\u00e4ramiseks heuristikat ja peeneid seadistusi, samal ajal kui uus planeerija j\u00e4lgib neid selgemalt ja ei n\u00f5ua t\u00e4iendavat seadistamist. EEVDF v\u00e4hendab viivitusi t\u00f6\u00f6\u00fclesannete t\u00e4itmisel, millega CFS-il oli planeerimisega probleeme.\n<li class=\"l\"> DTrace 2.0 d\u00fcnaamilise t\u00f5rkeotsingu s\u00fcsteemi tarnimist on j\u00e4tkatud, viidud \u00fcle kasutama kernelite eBPF alam\u00fcsteemi. DTrace 2.0 toimib eBPF peal, sarnaselt sellele, kuidas olemasolevad Linuxi j\u00e4lgimisriistad toimivad eBPF peal.\n<li class=\"l\"> KVM h\u00fcperviisor lubab kasutada kuni 4096 virtuaalset CPU-d (VCPU).\n<li class=\"l\"> KTLS-i, TLS protokolli rakendamist kernelitasemel, on j\u00e4tkatud.\n<li class=\"l\"> Uuendatud pseudogenereeriva numbrite generaatori RDRAND teostus, mis vastutab seadme \/dev\/random t\u00f6\u00f6 eest, on \u00fcle viidud BLAKE2s hash-funktsiooni kasutamisele SHA1 asemel, et t\u00e4iustada entropia segamise operatsioone. See muudatus on suurendanud pseudogenereeriva numbrite generaatori turvalisust. Juhuslike numbrite hankimise kiirus s\u00fcsteemi kutsumisega getrandom() on paranenud virtuaalse d\u00fcnaamilise jagatud objekti (vDSO) mehhanismi abil, mis viib s\u00fcsteemi kutsumise t\u00f6\u00f6tleja kernelist kasutaja ruumi, v\u00e4ltides konteksti vahetusi.\n<li class=\"l\"> On lisatud BIG TCP laienduse tugi, mis v\u00f5imaldab suurendada TCP-paketi maksimaalset suurust kuni 4 GB, et optimeerida andmekeskuste kiirete sisev\u00f5rkude t\u00f6\u00f6d. Paketisuuruse suurendamine 16-bitise v\u00e4ljaga IP-pealkirjas saavutatakse 'jumbo'-pakettide rakendamise kaudu, mille suurus IP-pealkirjas on seatud 0-ks ja tegelik suurus edastatakse eraldi 32-bitises v\u00e4ljas eraldi kaasatud pealkirjas.\n<li class=\"l\"> Netisokettide jaoks on realiseeritud SO_RESERVE_MEM valik, mille abil saab soketile reserveerida teatud hulga m\u00e4lu, mis j\u00e4\u00e4b alati soketi jaoks k\u00e4tte saadavaks ja ei t\u00e4ideta. Selle valiku kasutamine v\u00f5imaldab  suurendada j\u00f5udlust, v\u00e4hendades v\u00f5rgu steigis m\u00e4lupuhvrisse eraldamise ja tagastamise operatsioone, eriti siis, kui s\u00fcsteemis esinevad m\u00e4lupuuduse tingimused.\n<li class=\"l\"> Pakettide ajakava fq (Fair Queuing) j\u00f5udluse optimeerimine on suurendanud l\u00e4bilaskvust 5% v\u00f5rreldes suure koormuse tcp_rr (TCP Request\/Response) testis ja 13% piiramatu UDP-pakettide voos.\n<li class=\"l\"> Tuuma v\u00f5rgu struktuuride \u00fcmberkorraldamine on parandanud andmete vahem\u00e4lu t\u00f6\u00f6tlemise efektiivsust, suurendades TCP steki j\u00f5udlust s\u00fcsteemides, mis teenindavad suurt hulka paralleelseid p\u00e4ringuid.\n<li class=\"l\"> Lisatud ASMLib 3 teegi tugi Oracle'i andmebaasi salvestuse automaatseks haldamiseks.\n<li class=\"l\"> T\u00f6\u00f6d on tehtud io_uring as\u00fcnkroonse sisendi\/v\u00e4ljundi mehhanismi j\u00f5udluse ja turvalisuse optimeerimiseks. Lisatud io_uring baasil optimeerimised XFS ja Ext4 failis\u00fcsteemidele, v\u00f5imaldades mitme l\u00f5ime kaudu failidesse paralleelset otse kirjutamist.\n<li class=\"l\"> On parandatud Btrfs failis\u00fcsteemi toetust. Trim\/discard toetusega seadmetel on vaikimisi lubatud mountimisvalik 'discard=async', v\u00f5imaldades nende operatsioonide kohe teostamist k\u00f5igi FS-de jaoks as\u00fcnkroonses re\u017eiimis. On lisatud tugi kokkusurutud andmete saatmiseks ja vastuv\u00f5tmiseks ilma teisendusteta. On lisatud tugi plokkide kirjutamiseks, mis on suuremad kui 64 KB. Kvotide haldamine on lihtsustatud. On rakendatud kloonitud seadmete mountimise tugi. Parandatud NOCOW re\u017eiimis kirjutamise kontrollimist (l\u00e4bivool on suurenenud 9%). On lisatud mountimisvalikud 'ignoremetacsums' ja 'ignoresuperflags', et ignoreerida vale metadata ja superploki kontrollsummasid. On tagatud seadmete eemaldamise, tasakaalustamise ja plokkide \u00fcmberjaotamise \u00fclesannete t\u00e4itmine samal ajal.\n<li class=\"l\"> XFS failis\u00fcsteemis on lubatud kasutada ploki suurust, mis \u00fcletab m\u00e4lulehe suuruse. Lisatud on suured ekstendi loendurid v\u00e4ga suurte virtuaalsete diskide jaoks. Lisatud on failide sisu aatomiline kinnitamisre\u017eiim (commit). Pakutud on eksperimenteerimise rakendust kontrollimiseks (fsck) ja FS-i taastamiseks online-re\u017eiimis.\n<li class=\"l\"> NFS-is on vaikimisi lubatud READ_PLUS operatsiooni kasutamine, mis on m\u00e4\u00e4ratletud NFS 4.2 spetsifikatsioonis ja mis on suunatud t\u00f5husamale andmete lugemisele failidest, mis sisaldavad t\u00fchikuid.\n<li class=\"l\"> M\u00e4luhalduse s\u00fcsteem on \u00fcletatud, et kasutada folios (m\u00e4lu lehtede folio) andmestruktuuri. Foliud meenutavad kompoondlehti, kuid neil on parem semantika ja arusaadavam t\u00f6\u00f6korraldus.\n<li class=\"l\"> M\u00e4lu kaardistamise operatsioonide jaoks kasutatakse andmestruktuuri \u00abmaple tree\u00bb, mis positsioneeritakse efektiivsemana kui \u00abred-black tree\u00bb struktuur. Maple tree on B-puu variant, mis toetab v\u00e4\u00e4rtuste vahemikude indekseerimist ja on projekteeritud kande t\u00f5husaks kasutamiseks. <a href=\"https:\/\/prohoster.info\/et\/server\/dts-riga\/\"  data-wpil-monitor-id=\"371\">kaasaegsed protsessorid<\/a>.\n<li class=\"l\"> Mmap-is on rakendatud lukustused \u00fcksikute VMA (Virtual Memory Area) tasemel, mis v\u00f5imaldavad t\u00e4iustada mitme s\u00f5lme rakenduste j\u00f5udlust.\n<li class=\"l\"> Lisatud andmestruktuur ptdesc, mis optimeerib lehtede tabelite t\u00f6\u00f6tlemist, jagades metaandmete ja lehtede andmete struktuurid.             <\/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-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - 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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