{"id":37146,"date":"2019-10-31T22:15:59","date_gmt":"2019-10-31T19:15:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/kompaniya-oracle-namerena-pererabotat-dtrace-dlya-linux-s-ispolzovaniem-ebpf\/"},"modified":"2019-10-31T22:15:59","modified_gmt":"2019-10-31T19:15:59","slug":"kompaniya-oracle-namerena-pererabotat-dtrace-dlya-linux-s-ispolzovaniem-ebpf","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/kompaniya-oracle-namerena-pererabotat-dtrace-dlya-linux-s-ispolzovaniem-ebpf","title":{"rendered":"Az Oracle tervezi a DTrace \u00e1tdolgoz\u00e1s\u00e1t Linuxra az eBPF haszn\u00e1lat\u00e1val","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Oracle v\u00e1llalat bejelentette<\/a><\/noindex> a DTrace-hez kapcsol\u00f3d\u00f3 v\u00e1ltoz\u00e1sok upstream-re t\u00f6rt\u00e9n\u0151 \u00e1tad\u00e1s\u00e1nak munk\u00e1j\u00e1r\u00f3l \u00e9s a DTrace dinamikus hibakeres\u00e9si technol\u00f3gia megval\u00f3s\u00edt\u00e1s\u00e1nak terveir\u0151l a Linux kernel megl\u00e9v\u0151 infrastrukt\u00far\u00e1ja felett, nevezetesen olyan alrendszerek haszn\u00e1lat\u00e1val, mint az eBPF. Kezdetben a DTrace Linuxban t\u00f6rt\u00e9n\u0151 haszn\u00e1lat\u00e1nak f\u0151 probl\u00e9m\u00e1ja a licencfokozatok k\u00f6z\u00f6tti inkompatibilit\u00e1s volt, de 2018-ban az Oracle v\u00e1llalat \u00fajra licencelte<\/a><\/noindex> a DTrace k\u00f3dj\u00e1t GPLv2 alatt. <\/p>\n

A DTrace m\u00e1r hossz\u00fa ideje<\/a><\/noindex> el\u00e9rhet\u0151 Oracle Linux disztrib\u00faci\u00f3hoz k\u00e9sz\u00fclt kiterjesztett kernel r\u00e9szek\u00e9nt, de m\u00e1s disztrib\u00faci\u00f3kban val\u00f3 haszn\u00e1lat\u00e1hoz kieg\u00e9sz\u00edt\u0151 patch-ek alkalmaz\u00e1sa sz\u00fcks\u00e9ges a kernelhez, ami korl\u00e1tozza a technol\u00f3gia alkalmaz\u00e1s\u00e1t. P\u00e9ld\u00e1ul az Oracle k\u00e9sz\u00edtette<\/a><\/noindex> r\u00e9szletes \u00fatmutat\u00f3t k\u00e9sz\u00edtett a DTrace Fedora Linux al\u00e1 t\u00f6rt\u00e9n\u0151 telep\u00edt\u00e9s\u00e9hez \u00e9s haszn\u00e1lat\u00e1hoz. A telep\u00edt\u00e9shez eszk\u00f6zk\u00e9szletb\u0151l<\/a><\/noindex> a Linux kernel \u00fajra\u00e9p\u00edt\u00e9se sz\u00fcks\u00e9ges jav\u00edt\u00e1sokkal<\/a><\/noindex>. Az Oracle \u00e9s Fedora patch-ekkel t\u00f6rt\u00e9n\u0151 kernel \u00e9p\u00edt\u00e9s\u00e9nek automatiz\u00e1l\u00e1s\u00e1ra javasolt script<\/a><\/noindex>.<\/p>\n

az eBPF egy be\u00e9p\u00edtett bytecode \u00e9rtelmez\u0151 a Linux kernelben, amely lehet\u0151v\u00e9 teszi h\u00e1l\u00f3zati m\u0171veletek kezel\u0151inek l\u00e9trehoz\u00e1s\u00e1t, a rendszerek m\u0171k\u00f6d\u00e9s\u00e9nek nyomon k\u00f6vet\u00e9s\u00e9t, a rendszerh\u00edv\u00e1sok elfog\u00e1s\u00e1t, a hozz\u00e1f\u00e9r\u00e9s ellen\u0151rz\u00e9s\u00e9t, esem\u00e9nyek kezel\u00e9s\u00e9t id\u0151z\u00edt\u00e9sekkel (perf_event_open), a m\u0171veletek gyakoris\u00e1g\u00e1nak \u00e9s v\u00e9grehajt\u00e1si idej\u00e9nek sz\u00e1ml\u00e1l\u00e1s\u00e1t, valamint a nyomoz\u00e1st kprobes\/uprobes\/tracepoints seg\u00edts\u00e9g\u00e9vel. A JIT-kompil\u00e1ci\u00f3nak k\u00f6sz\u00f6nhet\u0151en a bytecode val\u00f3s id\u0151ben g\u00e9pi utas\u00edt\u00e1sokra ford\u00edt\u00f3dik \u00e9s nat\u00edv k\u00f3d teljes\u00edtm\u00e9ny\u00e9vel hajt\u00f3dik v\u00e9gre. A DTrace az eBPF felett is megval\u00f3s\u00edthat\u00f3, ahogyan azt az eBPF-en l\u00e9v\u0151 dolgozik<\/a><\/noindex> l\u00e9tez\u0151 nyomoz\u00f3 eszk\u00f6z\u00f6k teszik.<\/p>\n

A DTrace technol\u00f3gi\u00e1t a Solaris oper\u00e1ci\u00f3s rendszerhez fejlesztett\u00e9k ki, hogy megoldja a kernel \u00e9s a v\u00e9gs\u0151 alkalmaz\u00e1sok dinamikus nyomoz\u00e1si feladatait, lehet\u0151v\u00e9 t\u00e9ve a felhaszn\u00e1l\u00f3 sz\u00e1m\u00e1ra, hogy r\u00e9szletesen nyomon k\u00f6vesse a rendszer viselked\u00e9s\u00e9t, \u00e9s val\u00f3s id\u0151ben diagnosztiz\u00e1lja a probl\u00e9m\u00e1kat. A DTrace hibakeres\u00e9se nem befoly\u00e1solja a vizsg\u00e1lt alkalmaz\u00e1sok m\u0171k\u00f6d\u00e9s\u00e9t, \u00e9s nem hat a teljes\u00edtm\u00e9ny\u00fckre, ami lehet\u0151v\u00e9 teszi az \u00e9l\u0151 rendszerek elemz\u00e9s\u00e9t. A DTrace er\u0151ss\u00e9gei k\u00f6z\u00e9 tartozik a D magas szint\u0171 nyelv, amely az AWK-hoz hasonl\u00edt, ami lehet\u0151v\u00e9 teszi a nyomoz\u00e1si szkriptek egyszer\u0171bb l\u00e9trehoz\u00e1s\u00e1t, mint az eBPF-hez javasolt C, Python \u00e9s Lua nyelveken \u00edrt kezel\u0151kkel \u00e9s k\u00fcls\u0151 k\u00f6nyvt\u00e1rakkal. <\/p>\n

Az Oracle m\u00e9rn\u00f6kei is dolgoznak az eBPF backend l\u00e9trehoz\u00e1s\u00e1n a GCC sz\u00e1m\u00e1ra, \u00e9s m\u00e1r k\u00f6zz\u00e9tett\u00e9k patch csomagot<\/a><\/noindex> az eBPF t\u00e1mogat\u00e1s\u00e1nak integr\u00e1l\u00e1s\u00e1ra a GCC-be, \u00e9s el\u00e9rt\u00e9k<\/a><\/noindex> az eBPF t\u00e1mogat\u00e1s\u00e1hoz sz\u00fcks\u00e9ges k\u00f3d integr\u00e1l\u00e1s\u00e1t a GNU binutils-be. Eredetileg az eBPF t\u00e1mogat\u00e1s\u00e1ra szolg\u00e1l\u00f3 backend az LLVM technol\u00f3gi\u00e1kra \u00e9p\u00fcl, de az Oracle \u00e9rdekl\u0151dik az ir\u00e1nt, hogy a GCC nat\u00edv funkci\u00f3k\u00e9nt biztos\u00edtson eBPF programok gener\u00e1l\u00e1s\u00e1ra alkalmas eszk\u00f6z\u00f6ket, lehet\u0151v\u00e9 t\u00e9ve ezzel ugyanannak az eszk\u00f6zk\u00e9szletnek a haszn\u00e1lat\u00e1t a Linux kernel \u00e9s az eBPF programok \u00f6ssze\u00e1ll\u00edt\u00e1s\u00e1hoz. <\/p>\n

Az eBPF bytecode gener\u00e1l\u00e1s\u00e1hoz sz\u00fcks\u00e9ges backend mellett a GCC-hez javasolt jav\u00edt\u00e1sok tartalmazz\u00e1k az eBPF-hez sz\u00fcks\u00e9ges libgcc portj\u00e1t \u00e9s az ELF f\u00e1jlok el\u0151\u00e1ll\u00edt\u00e1s\u00e1hoz sz\u00fcks\u00e9ges eszk\u00f6z\u00f6ket, amelyek lehet\u0151v\u00e9 teszik, hogy az eBPF k\u00f3dot a kernel \u00e1ltal biztos\u00edtott bet\u00f6lt\u0151kkel v\u00e9gezhesse el a virtu\u00e1lis g\u00e9pen. A bytecode jelenleg C nyelven \u00edrhat\u00f3 (a nyelv nem minden lehet\u0151s\u00e9ge \u00e9rhet\u0151 el), de a j\u00f6v\u0151ben v\u00e1rhat\u00f3 a C nyelv alkalmaz\u00e1si lehet\u0151s\u00e9geinek sz\u00e9les\u00edt\u00e9se, m\u00e1s nyelvek t\u00e1mogat\u00e1s\u00e1nak hozz\u00e1ad\u00e1sa, szimul\u00e1tor l\u00e9trehoz\u00e1sa \u00e9s a GCC eBPF programok kernelbe val\u00f3 bet\u00f6lt\u00e9s n\u00e9lk\u00fcli hibakeres\u00e9s\u00e9nek t\u00e1mogat\u00e1sa.<\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Oracle \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0430 \u043e \u0440\u0430\u0431\u043e\u0442\u0435 \u043f\u043e \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0435 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441 DTrace \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 upstream \u0438 \u043f\u043b\u0430\u043d\u0430\u0445 \u043f\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043e\u0442\u043b\u0430\u0434\u043a\u0438 DTrace \u043f\u043e\u0432\u0435\u0440\u0445 \u0448\u0442\u0430\u0442\u043d\u043e\u0439 \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0443\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u044f\u0434\u0440\u0430 Linux, \u0430 \u0438\u043c\u0435\u043d\u043d\u043e \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0442\u0430\u043a\u0438\u0445 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c, \u043a\u0430\u043a eBPF. \u0418\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043e\u0439 \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c DTrace \u0432 Linux \u0431\u044b\u043b\u0430 \u043d\u0435\u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u044c \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0439, \u043d\u043e \u0432 2018 \u0433\u043e\u0434\u0443 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Oracle \u043f\u0435\u0440\u0435\u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0440\u043e\u0432\u0430\u043b\u0430 \u043a\u043e\u0434 […]<\/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-37146","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Az Oracle \u00e1tdolgozni tervezi a DTrace-t Linuxra eBPF haszn\u00e1lat\u00e1val | ProHoster","description":"Az Oracle bejelentette, hogy dolgozik a DTrace-hez kapcsol\u00f3d\u00f3 v\u00e1ltoztat\u00e1sok upstreamre t\u00f6rt\u00e9n\u0151 \u00e1tad\u00e1s\u00e1n \u00e9s a technol\u00f3gia megval\u00f3s\u00edt\u00e1si 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