{"id":115001,"date":"2024-04-12T02:30:02","date_gmt":"2024-04-12T00:30:02","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kompaniya-oracle-opublikovala-dtrace-dlya-linux-2-0-0-1-14"},"modified":"2024-04-12T02:30:02","modified_gmt":"2024-04-12T00:30:02","slug":"kompaniya-oracle-opublikovala-dtrace-dlya-linux-2-0-0-1-14","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/kompaniya-oracle-opublikovala-dtrace-dlya-linux-2-0-0-1-14","title":{"rendered":"Oracle har publicerat DTrace f\u00f6r Linux 2.0.0-1.14","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>En experimentell version av verktygen f\u00f6r dynamisk fels\u00f6kning DTrace f\u00f6r Linux 2.0.0-1.14 har presenterats. Den \u00e4r implementerad som en anv\u00e4ndarutrymmesprocess som anv\u00e4nder eBPF-subsystemet och de inbyggda sp\u00e5rningsmekanismerna som tillhandah\u00e5lls av Linux-k\u00e4rnan. Funktionellt sett \u00e4r implementeringen av DTrace baserat p\u00e5 eBPF n\u00e4ra den f\u00f6rsta implementeringen av DTrace f\u00f6r Linux, som utf\u00f6rdes i form av en k\u00e4rnmodul. Projektets kod distribueras under GPLv2-licensen.     <\/p>\n<p>Verktygen kan anv\u00e4ndas med standard Linux-k\u00e4rnor som st\u00f6der BPF. F\u00f6r att fungera kr\u00e4vs biblioteket libctf som implementerar st\u00f6d f\u00f6r det debugformatet CTF (Compact Type Format), vilket ing\u00e5r i paketet binutils fr\u00e5n version 2.40, eller biblioteket libdtrace-ctf, porterat fr\u00e5n Solaris. Tv\u00e5 patchar till k\u00e4rna 6.7 erbjuds som valfritt f\u00f6r att aktivera ut\u00f6kade funktioner f\u00f6r att f\u00e5 ytterligare data om moduler och k\u00e4rnan.    <\/p>\n<p>DTrace-teknologin utvecklades f\u00f6r att l\u00f6sa uppgifter f\u00f6r dynamisk sp\u00e5rning av k\u00e4rnor och slutanv\u00e4ndarapplikationer i operativsystemet Solaris. DTrace ger anv\u00e4ndaren m\u00f6jlighet att noggrant \u00f6vervaka systemets beteende och diagnostisera problem i realtid. Under fels\u00f6kningsprocessen p\u00e5verkar inte DTrace de unders\u00f6kta applikationerna och har ingen inverkan p\u00e5 deras prestanda, vilket m\u00f6jligg\u00f6r analys av k\u00f6rande system i farten. Bland DTrace:s styrkor finns det h\u00f6g-niv\u00e5spr\u00e5k D, som liknar AWK, vilket g\u00f6r det betydligt enklare att skapa sp\u00e5rningsscenarier \u00e4n med de verktyg f\u00f6r eBPF som anv\u00e4nder spr\u00e5k som C, Python och Lua med externa bibliotek.     <\/p>\n<p>Key features:  <\/p>\n<ul>\n<li class=\"l\"> Tillg\u00e4ngliga leverant\u00f6rer:\n<ul>\n<li class=\"l\"> cpc (CPU Performacne Counter) &#8212; \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u043e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438.\n<li class=\"l\"> dtrace &#8212; \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 BEGIN, END \u0438 ERROR, \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u043c\u044b\u0435 \u043f\u0435\u0440\u0435\u0434 \u0438\u043b\u0438 \u043f\u043e\u0441\u043b\u0435 \u0434\u0440\u0443\u0433\u0438\u0445 \u043f\u0440\u043e\u0432\u0435\u0440\u043e\u043a, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043f\u0440\u0438 \u0432\u043e\u0437\u043d\u0438\u043a\u043d\u043e\u0432\u0435\u043d\u0438\u0438 \u043e\u0448\u0438\u0431\u043e\u043a.\n<li class=\"l\"> fbt  (Function Boundary Tracing) &#8212; \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u043d\u0438\u0435 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0439 \u043a \u0444\u0443\u043d\u043a\u0446\u0438\u044f\u043c \u044f\u0434\u0440\u0430.\n<li class=\"l\"> lockstat &#8212; \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u043d\u0438\u0435 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043e\u043a.\n<li class=\"l\"> pid &#8212; \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u043d\u0438\u0435 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0439 \u043a \u0444\u0443\u043d\u043a\u0446\u0438\u044f\u043c \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430\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.\n<li class=\"l\"> proc &#8212; \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u043d\u0438\u0435 \u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u0438, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u043e\u0439 \u0441 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430\u043c\u0438, \u0442\u0430\u043a\u043e\u0439 \u043a\u0430\u043a \u0437\u0430\u043f\u0443\u0441\u043a \u0438 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u0435 \u0440\u0430\u0431\u043e\u0442\u044b (fork, exec, exit, fault).\n<li class=\"l\"> profile &#8212;  \u0441\u043e\u0445\u0440\u0430\u043d\u0435\u043d\u0438\u0435 \u0441\u0442\u0430\u0442\u0438\u0441\u0442\u0438\u043a\u0438 \u043e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0447\u0435\u0440\u0435\u0437 \u0443\u043a\u0430\u0437\u0430\u043d\u043d\u044b\u0435 \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043a\u0438 \u0432\u0440\u0435\u043c\u0435\u043d\u0438.\n<li class=\"l\"> sdt, rawtp  &#8212; \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0442\u0440\u0430\u0441\u0441\u0438\u0440\u043e\u0432\u043a\u0430 \u044f\u0434\u0440\u0430  (SDT &#8212; Statically Defined Tracing).\n<li class=\"l\"> usdt: \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0442\u0440\u0430\u0441\u0441\u0438\u0440\u043e\u0432\u043a\u0430 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 (USDT &#8212; Userspace Statically Defined Tracing)\n<li class=\"l\"> sched &#8212; \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u043d\u0438\u0435 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 CPU.\n<li class=\"l\"> sycall &#8212; \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u043d\u0438\u0435 \u0432\u0445\u043e\u0434\u0430  \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u0432\u044b\u0437\u043e\u0432\u044b \u0438 \u0432\u044b\u0445\u043e\u0434\u0430 \u0438\u0437 \u043d\u0438\u0445.    <\/ul>\n<li class=\"l\"> Aggregating insamlade data: m\u00f6jlighet att anv\u00e4nda aggregatfunktioner (avg, count, llquantize, lquantize, max, min, quantize, stddev och sum) samt aggregat\u00e5tg\u00e4rder (clear, normalize, printa). St\u00f6d f\u00f6r att spara resultaten av aggregatfunktioner i vanliga och associativa arrayer.\n<li class=\"l\"> St\u00f6d f\u00f6r spekulativ sp\u00e5rning, som till\u00e5ter ephemeral \u00f6vervakning av data f\u00f6r att avg\u00f6ra vilka som ska lagras i sp\u00e5rningsbufferten och vilka som ska kasseras. Funktioner tillg\u00e4ngliga: speculation, speculate, commit och discard.\n<li class=\"l\"> St\u00f6d f\u00f6r globala och lokala variabler, TLS (Thread-Local Storage), associativa arrayer och str\u00e4ngar.\n<li class=\"l\"> \u041f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u044b\u0445 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445: arg0 &#8212; arg9, args[], caller, curcpu, curthread, epid, errno,          execname, gid, id, pid, ppid, probefunc, probemod, probename,          probeprov, stackdepth, tid, timestamp, ucaller, uid, uregs[],          ustackdepth, walltimestamp.\n<li class=\"l\"> St\u00f6d f\u00f6r \u00e5tg\u00e4rder: exit, freopen, ftruncate, mod, printa, printf, raise, setopt, stack, sym, system, trace, tracemem, uaddr, umod, ustack och usym.\n<li class=\"l\"> N\u00e4rvaro av inbyggda funktioner: alloca, basename, bcopy, copyin, copyinstr, copyinto, copyout, copyoutstr, dirname, getmajor, getminor, htonl, htonll, htons, index, inet_ntoa, lltostr, mutex_owned, mutex_owner, mutex_type_adaptive, mutex_type_spin, ntohl, ntohll, ntohs, progenyof, rand, rindex, rw_iswriter, rw_read_held, rw_write_held, strchr, strjoin, strlen, strrchr, strstr, strtok, substr.\n<li class=\"l\"> N\u00e4rvaro av datar\u00e4knare som inte hamnar i sp\u00e5rningsbuffrar.\n<li class=\"l\"> St\u00f6d f\u00f6r kompilering av sp\u00e5rningsskript i D-spr\u00e5ket till BPF-program.\n<li class=\"l\"> F\u00f6rkompilering av BPF-funktioner f\u00f6r bibliotekanrop.\n<li class=\"l\"> Alternativet bpflog f\u00f6r att f\u00e5 loggning av verifiering av inl\u00e4sta BPF-program.\n<li class=\"l\"> Dynamisk kodgenerering och f\u00f6rkompilering av kod f\u00f6r \u00e5teranv\u00e4ndning i BPF-program.    <\/ul>\n<p>F\u00f6r\u00e4ndringar i den nya versionen:  <\/p>\n<ul>\n<li class=\"l\"> I PID-leverant\u00f6ren, som anv\u00e4nds f\u00f6r att sp\u00e5ra processer i anv\u00e4ndarutrymmet, har st\u00f6d f\u00f6r sp\u00e5rning av instruktionens utf\u00f6rande lagts till genom att deras f\u00f6rskjutning i koden.\n<li class=\"l\"> St\u00f6d f\u00f6r att anv\u00e4nda funktionerna stack() och ustack() f\u00f6r att aggregera insamlade data.\n<li class=\"l\"> M\u00f6jlighet att ta bort element av vilken typ som helst fr\u00e5n associativa arrayer genom att tilldela litteralen 0.\n<li class=\"l\"> Tillagd \u00e5tg\u00e4rd print f\u00f6r att skriva strukturerade data med typannotationer.\n<li class=\"l\"> Nya inbyggda funktioner cleanpath(), d_path() och link_ntop() har lagts till.\n<li class=\"l\"> \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 &#171;-xcpu&#187;, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u043f\u0440\u0438\u0432\u044f\u0437\u0430\u0442\u044c \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043a \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u043c CPU.\n<li class=\"l\"> \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 &#171;-xlockmem&#187; \u0434\u043b\u044f \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0440\u0430\u0437\u043c\u0435\u0440\u0430 \u043f\u0430\u043c\u044f\u0442\u0438.\n<li class=\"l\"> M\u00f6jlighet att spara processens sp\u00e5rningsdata (USDT) mellan omstarter av dtprobed.\n<li class=\"l\"> St\u00f6d f\u00f6r BTF-mekanismen (BPF Type Format) som tillhandah\u00e5ller typinformation f\u00f6r typkontroller i BPF-pseudokod.\n<li class=\"l\"> M\u00f6jlighet att anv\u00e4nda configure-skriptet f\u00f6r byggning.  <\/ul>\n<p>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60973\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043e\u0442\u043b\u0430\u0434\u043a\u0438 DTrace \u0434\u043b\u044f Linux 2.0.0-1.14, \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0432 \u0432\u0438\u0434\u0435 \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0435\u0433\u043e \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\u0440\u043e\u0446\u0435\u0441\u0441\u0430, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0435\u0433\u043e \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0443 eBPF \u0438 \u0448\u0442\u0430\u0442\u043d\u044b\u0435 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u044b \u0442\u0440\u0430\u0441\u0441\u0438\u0440\u043e\u0432\u043a\u0438, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u044b\u0445 \u044f\u0434\u0440\u043e\u043c Linux. \u041f\u043e \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f DTrace \u043d\u0430 \u0431\u0430\u0437\u0435 eBPF \u0431\u043b\u0438\u0437\u043a\u0430 \u043a \u043f\u0435\u0440\u0432\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 DTrace \u0434\u043b\u044f Linux, \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u043d\u043e\u0439 \u0432 \u0444\u043e\u0440\u043c\u0435 \u043c\u043e\u0434\u0443\u043b\u044f \u044f\u0434\u0440\u0430. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv2. \u0418\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 \u043c\u043e\u0436\u0435\u0442 [&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-115001","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f 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