{"id":35395,"date":"2019-10-31T22:04:04","date_gmt":"2019-10-31T19:04:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/reliz-operatsionnoj-sistemy-dragonfly-bsd-5-6\/"},"modified":"2019-10-31T22:04:04","modified_gmt":"2019-10-31T19:04:04","slug":"reliz-operatsionnoj-sistemy-dragonfly-bsd-5-6","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/reliz-operatsionnoj-sistemy-dragonfly-bsd-5-6","title":{"rendered":"A DragonFly BSD 5.6 oper\u00e1ci\u00f3s rendszer kiad\u00e1sa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"http:\/\/www.dragonflybsd.org\/release56\/\">El\u00e9rhet\u0151<\/a><\/noindex>  kiad\u00e1s <noindex><a rel=\"nofollow\" href=\"http:\/\/www.dragonflybsd.org\/\">DragonFlyBSD 5.6<\/a><\/noindex>, egy hibrid kernel\u0171 oper\u00e1ci\u00f3s rendszer, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=2717\">amelyet<\/a><\/noindex> 2003-ban hoztak l\u00e9tre a FreeBSD 4.x \u00e1g alternat\u00edv fejleszt\u00e9s\u00e9nek c\u00e9lj\u00e1b\u00f3l. A DragonFly BSD jellemz\u0151i k\u00f6z\u00e9 tartozik a elosztott verzi\u00f3s f\u00e1jlrendszer <noindex><a rel=\"nofollow\" href=\"http:\/\/wiki.opennet.ru\/HAMMER\">HAMMER<\/a><\/noindex>, t\u00e1mogatva a \u201evirtu\u00e1lis\u201d rendszermagok bet\u00f6lt\u00e9s\u00e9t felhaszn\u00e1l\u00f3i folyamatokk\u00e9nt, a f\u00e1jlrendszer adatok \u00e9s metainform\u00e1ci\u00f3k gyors\u00edt\u00f3t\u00e1raz\u00e1s\u00e1nak lehet\u0151s\u00e9g\u00e9t SSD-meghajt\u00f3kon, a kontextust figyelembe vev\u0151 vari\u00e1bilis szimbolikus hivatkoz\u00e1sok alkalmaz\u00e1s\u00e1t, a folyamatok felf\u00fcggeszt\u00e9s\u00e9t az \u00e1llapotuk lemezen t\u00f6rt\u00e9n\u0151 meg\u0151rz\u00e9s\u00e9vel, hibrid mag, amely k\u00f6nny\u0171 sz\u00e1lakat (LWKT) haszn\u00e1l. <\/p>\n<p>F\u0151 <noindex><a rel=\"nofollow\" href=\"http:\/\/www.dragonflybsd.org\/release56\/\">fejleszt\u00e9sek<\/a><\/noindex>, amelyeket hozz\u00e1adtak a DragonFlyBSD 5.6-hoz:\n<\/p>\n<ul>\n<li class=\"l\"> Friss\u00edtett\u00e9k a virtu\u00e1lis mem\u00f3ria kezel\u0151 rendszert. Sz\u00e1mos, a virtu\u00e1lis mem\u00f3ri\u00e1val \u00e9s a PMAP-pal kapcsolatos alrendszert \u00fajra\u00edrtak.<br \/>\nSz\u00e1mos helyen megszabadultak a z\u00e1rlatokt\u00f3l, t\u00f6bbek k\u00f6z\u00f6tt az m_page_wakeup, vm_hold \u00e9s vm_unhold f\u00fcggv\u00e9nyekben. N\u00f6velt\u00e9k a processzork\u00e9szlet-haszn\u00e1lat hat\u00e9konys\u00e1g\u00e1t az VM objektumok CPU magok k\u00f6z\u00f6tti migr\u00e1ci\u00f3j\u00e1nak cs\u00f6kkent\u00e9s\u00e9vel \u00e9s a kiv\u00e9telek (page-fault) feldolgoz\u00e1s\u00e1ra ford\u00edtott k\u00f6lts\u00e9gek cs\u00f6kkent\u00e9s\u00e9vel a megosztott mem\u00f3ria ter\u00fcleteken. Fejlesztett\u00e9k a mem\u00f3riaoldal-allok\u00e1ci\u00f3 algoritmus\u00e1t. Elh\u00e1r\u00edtott\u00e1k a vm_page_alloc() f\u00fcggv\u00e9ny m\u0171k\u00f6d\u00e9sekor fell\u00e9p\u0151 k\u00e9s\u00e9seket. Hozz\u00e1adt\u00e1k az API vm_page_hash*(), amely lehet\u0151v\u00e9 teszi a z\u00e1rlat n\u00e9lk\u00fcli lek\u00e9rdez\u00e9seket.<\/p>\n<p>Ennek eredm\u00e9nyek\u00e9nt jelent\u0151sen <noindex><a rel=\"nofollow\" href=\"http:\/\/lists.dragonflybsd.org\/pipermail\/users\/2019-June\/358196.html\">n\u00f6velni tudt\u00e1k a teljes\u00edtm\u00e9nyt<\/a><\/noindex>. P\u00e9ld\u00e1ul,<br \/>\na buildkernel tesztben a magoldali m\u0171veletek v\u00e9grehajt\u00e1si ideje 40%-kal cs\u00f6kkent. A throughput 7%-kal n\u0151tt a Haswell csal\u00e1d\u00fa CPU-k, 14%-kal pedig a Xeon-ok eset\u00e9ben. A SELF-EXEC S\/DI tesztben a teljes\u00edtm\u00e9nyn\u00f6veked\u00e9s 23% a Haswell \u00e9s 18% a Xeon eset\u00e9ben a kor\u00e1bbi kiad\u00e1shoz k\u00e9pest. A SELF-EXEC S\/SH tesztben ez megfelel\u0151en 28% \u00e9s 71%, a SELF-EXEC D\/DI eset\u00e9n 23% \u00e9s 242% (a t\u00f6bbsz\u00e1l\u00fa m\u0171k\u00f6d\u00e9s jav\u00edt\u00e1s\u00e1nak k\u00f6sz\u00f6nhet\u0151en), a SELF-EXEC D\/SH eset\u00e9ben pedig 24% \u00e9s 234%, a FAULTZF tesztben 17% \u00e9s 14%, a DOCOMP-ban 22% \u00e9s 42%;<br \/>\nSELF-EXEC S\/SH megfelel\u0151en 28% \u00e9s 71%, a SELF-EXEC D\/DI eset\u00e9ben pedig 23% \u00e9s 242% (a p\u00e1rhuzamos munka teljes\u00edtm\u00e9nyjav\u00edt\u00e1sa r\u00e9v\u00e9n), a SELF-EXEC D\/SH eset\u00e9ben 24% \u00e9s 234%, a FAULTZF eset\u00e9ben 17% \u00e9s 14%, a DOCOMP eset\u00e9ben pedig 22% \u00e9s 42%.<br \/>\nJelent\u0151sen friss\u00edtett\u00e9k a DRM illeszt\u0151programot \u00e9s a videomem\u00f3ria-kezel\u0151 rendszert (TTM) az AMD grafikus k\u00e1rty\u00e1khoz. Hozz\u00e1adt\u00e1k az \u00faj Ryzen APU-k t\u00e1mogat\u00e1s\u00e1t. Fejlesztett\u00e9k az UEFI keretbuffer t\u00e1mogat\u00e1s\u00e1t. A radeon\/ttm eset\u00e9ben megsz\u00fcntett\u00e9k a teljes\u00edtm\u00e9nyre negat\u00edvan hat\u00f3 k\u00f6lcs\u00f6n\u00f6s z\u00e1rlatot. \u00c1tstruktur\u00e1lt\u00e1k a k\u00e9sleltet\u00e9sek be\u00e1ll\u00edt\u00e1s\u00e1t a bet\u00f6lt\u00e9si folyamat sor\u00e1n, hogy elker\u00fclj\u00e9k a konfliktust az i915 illeszt\u0151program \u00e9s az X-szerver k\u00f6z\u00f6tt. Hozz\u00e1adt\u00e1k a DRM_IOCTL_GET_PCIINFO h\u00edv\u00e1st a mesa\/libdrm t\u00e1mogat\u00e1s jav\u00edt\u00e1sa \u00e9rdek\u00e9ben. Sz\u00e1mos hib\u00e1t \u00e9s hi\u00e1nyoss\u00e1got jav\u00edtottak;<\/p>\n<li class=\"l\"> \u00dajra\u00edrt\u00e1k a HAMMER2 f\u00e1jlrendszer szinkroniz\u00e1l\u00f3 k\u00f3dj\u00e1t, ami lehet\u0151v\u00e9 tette a f\u00e1jlrendszer teljes\u00edtm\u00e9ny\u00e9nek jelent\u0151s n\u00f6vel\u00e9s\u00e9t. Emellett fokoz\u00f3dott a soros \u00edr\u00e1si m\u0171veletek teljes\u00edtm\u00e9nye.\n<li class=\"l\"> A HAMMER2 f\u00e1jlrendszer szinkroniz\u00e1l\u00f3 k\u00f3dj\u00e1t \u00fajra\u00edrt\u00e1k, ami jelent\u0151sen jav\u00edtotta a f\u00e1jlrendszer teljes\u00edtm\u00e9ny\u00e9t. Ezenk\u00edv\u00fcl a soros \u00edr\u00e1s m\u0171veleteinek teljes\u00edtm\u00e9nye is n\u00f6vekedett.<br \/>\nA hiba\u00e1ll\u00f3s\u00e1g n\u00f6vel\u00e9se \u00e9rdek\u00e9ben hozz\u00e1adt\u00e1k a f\u00fcgg\u0151s\u00e9gek nyomon k\u00f6vet\u00e9s\u00e9t, hogy elker\u00fclj\u00e9k a k\u00f6nyvt\u00e1rak\/f\u00e1jlok feloszt\u00e1s\u00e1t a l\u00e9trehoz\u00e1si, \u00e1tnevez\u00e9si vagy t\u00f6rl\u00e9si m\u0171veletek v\u00e9grehajt\u00e1sa sor\u00e1n. \u00c1tdolgozt\u00e1k a pillanatk\u00e9p-sebess\u00e9g cs\u00f6kkent\u00e9se \u00e9rdek\u00e9ben v\u00e9gzett k\u00f3dot, \u00e9s garant\u00e1lt\u00e1k a pillanatk\u00e9p k\u00f6vetkezetess\u00e9g\u00e9t. Jav\u00edtott\u00e1k a p\u00e1rhuzamos \u00edr\u00e1si m\u0171veletek \u00e9s a lemezre val\u00f3 cache \u00fcr\u00edt\u00e9s (flush) kezel\u00e9s\u00e9t. Fejlesztett\u00e9k az umount m\u0171velet megval\u00f3s\u00edt\u00e1s\u00e1t. N\u00f6velt\u00e9k az integrit\u00e1s megs\u00e9rt\u00e9s\u00e9r\u0151l sz\u00f3l\u00f3 \u00fczenetek t\u00e1j\u00e9koztat\u00e1s\u00e1t (CRC hiba).<\/p>\n<p>A HAMMER2-t alap\u00e9rtelmezett gy\u00f6k\u00e9rf\u00e1jlrendszerk\u00e9nt aj\u00e1nlj\u00e1k. A klaszterez\u00e9s t\u00e1mogat\u00e1sa jelenleg nem el\u00e9rhet\u0151. A HAMMER2 f\u00e1jlrendszer kiemelkedik az olyan funkci\u00f3ival, mint a k\u00fcl\u00f6n mont\u00e1lhat\u00f3 pillanatk\u00e9pek, \u00edr\u00e1sra el\u00e9rhet\u0151 pillanatk\u00e9pek, k\u00f6nyvt\u00e1rszi kv\u00f3t\u00e1k, inkrement\u00e1lis t\u00fckr\u00f6z\u00e9s, k\u00fcl\u00f6nb\u00f6z\u0151 adatkompresszi\u00f3s algoritmusok t\u00e1mogat\u00e1sa, multi-master t\u00fckr\u00f6z\u00e9s, ami lehet\u0151v\u00e9 teszi az adatok t\u00f6bb hosztra t\u00f6rt\u00e9n\u0151 megoszt\u00e1s\u00e1t; <\/p>\n<li class=\"l\"> Hozz\u00e1adva az FUSE alrendszer kezdeti t\u00e1mogat\u00e1sa a felhaszn\u00e1l\u00f3i t\u00e9rbeli f\u00e1jlrendszerek l\u00e9trehoz\u00e1s\u00e1hoz;\n<li class=\"l\"> A PF csomagsz\u0171r\u0151 teljes\u00edtm\u00e9nye n\u00f6velve lett a t\u00f6bbmagos rendszereken;\n<li class=\"l\"> T\u00e1mogat\u00e1s bevezetve a SMAP (Supervisor Mode Access Prevention) \u00e9s SMEP (Supervisor Mode Execution Prevention) v\u00e9delmi mechanizmusokhoz, amennyiben a CPU-n ez t\u00e1mogatott. A SMAP megakad\u00e1lyozza az adatokhoz val\u00f3 hozz\u00e1f\u00e9r\u00e9st a felhaszn\u00e1l\u00f3i t\u00e9rb\u0151l privilegiz\u00e1lt k\u00f3d \u00e1ltal, amely a kernel szinten fut. A SMEP csak kernel szintr\u0151l nem engedi a felhaszn\u00e1l\u00f3i szint\u0171 k\u00f3d v\u00e9grehajt\u00e1s\u00e1t, ami lehet\u0151v\u00e9 teszi sok kernel sebezhet\u0151s\u00e9g kihaszn\u00e1l\u00e1s\u00e1nak blokkol\u00e1s\u00e1t (a shell-k\u00f3d nem fog v\u00e9grehajt\u00f3dni, mivel a felhaszn\u00e1l\u00f3i t\u00e9rben van);\n<li class=\"l\"> Hozz\u00e1adva a k\u00f3d a MDS (Microarchitectural Data Sampling) oszt\u00e1ly letilt\u00e1s\u00e1hoz az Intel processzorokban. A rendszer v\u00e9dtelens\u00e9g\u00e9nek ellen\u0151rz\u00e9s\u00e9re a SysFS v\u00e1ltoz\u00f3 \u201e\/sys\/devices\/system\/cpu\/vulnerabilities\/mds\u201d haszn\u00e1lhat\u00f3.  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50684\">attacks<\/a><\/noindex> MDS (Microarchitectural Data Sampling) oszt\u00e1lya az Intel processzorokban. Az m\u0171k\u00f6d\u00e9shez friss\u00edtett mikrok\u00f3d sz\u00fcks\u00e9ges. Alap\u00e9rtelmez\u00e9s szerint a v\u00e9delem ki van kapcsolva, \u00e9s a 'sysctl machdep.mds_mitigation=MD_CLEAR' parancs kiad\u00e1s\u00e1val lehet aktiv\u00e1lni. Ennek bekapcsol\u00e1sa 250ns-os k\u00e9sleltet\u00e9ssel j\u00e1r a felhaszn\u00e1l\u00f3i t\u00e9r \u00e9s a kernel k\u00f6z\u00f6tti kontextusv\u00e1lt\u00e1s sor\u00e1n;\n<li class=\"l\"> A kernel alap\u00e9rtelmez\u00e9s szerint Spectre t\u00e1mad\u00e1sok ellen v\u00e9dett retpoline v\u00e9delemmel van \u00f6sszerakva.\n<li class=\"l\"> Sok alap rendszerbeli eszk\u00f6z \u00e1t\u00e1llt a LibreSSL haszn\u00e1lat\u00e1ra;\n<li class=\"l\"> Friss\u00edtve lettek a k\u00fcls\u0151 komponensek verzi\u00f3i, bele\u00e9rtve az xz 5.2.4,<br \/>\n    libarchive 3.3.3, libressl 2.9.1, openssh 8.0, ldns 1.7.0,<br \/>\nlibedit 2019-03-24. Az evdev, makefs, ministat, libfetch \u00e1tv\u00e9ve a FreeBSD-b\u0151l,<br \/>\ndd. Az OpenBSD-b\u0151l a libc-be \u00e1tker\u00fclt a reallocarray(), timing_safe*(), freezero(), dup3(), recallocarray(), aligned_alloc(), explicit_bzero() h\u00edv\u00e1sok. Alap\u00e9rtelmez\u00e9s szerint a gcc-5 helyett a gcc-8 ford\u00edt\u00f3t haszn\u00e1lj\u00e1k a ford\u00edt\u00e1shoz.<\/p>\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Forr\u00e1s: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50887\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0435\u043b\u0438\u0437 DragonFlyBSD 5.6, \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0441 \u0433\u0438\u0431\u0440\u0438\u0434\u043d\u044b\u043c \u044f\u0434\u0440\u043e\u043c, \u0441\u043e\u0437\u0434\u0430\u043d\u043d\u043e\u0439 \u0432 2003 \u0433\u043e\u0434\u0443 \u0441 \u0446\u0435\u043b\u044c\u044e \u0430\u043b\u044c\u0442\u0435\u0440\u043d\u0430\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u044f \u0432\u0435\u0442\u043a\u0438 FreeBSD 4.x. \u0418\u0437 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0435\u0439 DragonFly BSD \u043c\u043e\u0436\u043d\u043e \u0432\u044b\u0434\u0435\u043b\u0438\u0442\u044c \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u0443\u044e \u0432\u0435\u0440\u0441\u0438\u043e\u043d\u043d\u0443\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u0443\u044e \u0441\u0438\u0441\u0442\u0435\u043c\u0443 HAMMER, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 &#171;\u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445&#187; \u044f\u0434\u0435\u0440 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043a\u0430\u043a \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432, \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043a\u044d\u0448\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0438 \u043c\u0435\u0442\u0430-\u0434\u0430\u043d\u043d\u044b\u0445 \u0424\u0421 \u043d\u0430 SSD-\u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u044f\u0445, \u0443\u0447\u0438\u0442\u044b\u0432\u0430\u044e\u0449\u0438\u0435 \u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u043d\u044b\u0435 \u0441\u0438\u043c\u0432\u043e\u043b\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0441\u0441\u044b\u043b\u043a\u0438, \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u043c\u043e\u0440\u043e\u0437\u043a\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432 [&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-35395","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0435\u043b\u0438\u0437 DragonFlyBSD 5.6, \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/hu\/blog\/news\/reliz-operatsionnoj-sistemy-dragonfly-bsd-5-6\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" 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