{"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\/et\/blog\/novosti-interneta\/kompaniya-oracle-opublikovala-dtrace-dlya-linux-2-0-0-1-14","title":{"rendered":"Ettev\u00f5te Oracle avaldas DTrace for Linux 2.0.0-1.14.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Esitleme eksperimentaalset DTrace d\u00fcnaamika t\u00f5rkeotsingu t\u00f6\u00f6riista v\u00e4ljaandele Linux 2.0.0-1.14, mis on rakendatud kasutajaruumi protsessinana, kasutades eBPF alams\u00fcsteemi ja Linuxi kernelist pakutavaid j\u00e4lgimise mehhanisme. Funktsionaalsuse poolest on eBPF-p\u00f5hine DTrace teostus sarnane esimesel DTrace rakendusel Linuxile, mis tehti kernelimoodulina. Projekti kood on litsentseeritud GPLv2 alusel.     <\/p>\n<p>T\u00f6\u00f6riista saab kasutada koos Linuxi ametlike kernelitega, mis toetavad BPF-i. Toimimiseks on vajalik libctf teek, mis rakendab CTF (Compact Type Format) t\u00f5rkeformaadi tuge, mis on osa binutils paketist alates v\u00e4ljaandest 2.40, v\u00f5i libdtrace-ctf teek, mis on portitud Solarisest. Valikuliselt on saadaval kaks 6.7 kerneliparandust, mis v\u00f5imaldavad juurdep\u00e4\u00e4su t\u00e4iendavatele andmete omadustele, mis puudutavad mooduleid ja kernelit.    <\/p>\n<p>DTrace tehnoloogia loodi selleks, et lahendada d\u00fcnaamilise j\u00e4lgimise \u00fclesandeid kernelis ja l\u00f5pprakendustes Solaris operatsioonis\u00fcsteemis. DTrace v\u00f5imaldab kasutajal s\u00fcstemaatiliselt j\u00e4lgida s\u00fcsteemi k\u00e4itumist ja reaalajas t\u00f5rkeotsingut teostada. T\u00f5rkeotsingu k\u00e4igus ei m\u00f5juta DTrace uuritavate rakenduste t\u00f6\u00f6d ega m\u00f5juta nende j\u00f5udlust, mist\u00f5ttu on v\u00f5imalik anal\u00fc\u00fcsida t\u00f6\u00f6tavaid s\u00fcsteeme reaalajas. DTrace tugevaimaks k\u00fcljeks on k\u00f5rgtaseme D keele olemasolu, mis sarnaneb AWK-ile, kuhu on tunduvalt lihtsam luua j\u00e4lgimisskripte kui eBPF-i jaoks ette n\u00e4htud t\u00f6\u00f6riistade abil, mis kirjutavad t\u00f6\u00f6tlejat C, Python ja Lua keeles koos v\u00e4liste teekidega.     <\/p>\n<p>P\u00f5hifunktsioonid:  <\/p>\n<ul>\n<li class=\"l\"> Saadaval olevad pakkujad:\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\"> Kogutud andmete kogumine: v\u00f5imalus rakendada agregaatfunktsioone (avg, count, llquantize, lquantize, max, min, quantize, stddev ja sum) ning agregaattoiminguid (clear, normalize, printa). Tulemuste salvestamise tugi rakendatud agregaatfunktsioonide tavap\u00e4rastesse ja assotsiatiivsetesse massiividesse.\n<li class=\"l\"> Spetsulaarse j\u00e4lgimise tugi, mis v\u00f5imaldab kiiresti j\u00e4lgida andmeid, otsustades, millised tuleb salvestada j\u00e4lgimispuule ja millised tuleb k\u00f5rvaldata. Saadaval on funktsioonid: speculation, speculate, commit ja discard.\n<li class=\"l\"> Globaalsete ja kohalike muutujate, TLS (Thread-Local Storage), assotsiatiivsete massiivide ja stringide tugi.\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\"> Tegevuste tugi: exit, freopen, ftruncate, mod, printa, printf, raise, setopt, stack, sym, system, trace, tracemem, uaddr, umod, ustack ja usym.\n<li class=\"l\"> Sisseehitatud funktsioonide olemasolu: 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\"> Andmete loendurite olemasolu, mis ei satu j\u00e4lgimispuudesse.\n<li class=\"l\"> Tugi j\u00e4lgimisskripti koostamiseks D keeles BPF-programmidena.\n<li class=\"l\"> BPF-funktsioonide eelkompileerimine raamatukogu kutsumiste jaoks.\n<li class=\"l\"> bpflog valik BPF-programmide laadimise logimise saamiseks.\n<li class=\"l\"> D\u00fcnaamiline koodi genereerimine ja eelkompileeritud koodi korduvkasutatavus BPF-programmides.    <\/ul>\n<p>Uue versiooni muudatused:  <\/p>\n<ul>\n<li class=\"l\"> Pakkuja pid, mida kasutatakse protsesside j\u00e4lgimiseks kasutajaruumis, on lisatud toega instruktsioonide t\u00e4itmise j\u00e4lgimiseks nende offsetite p\u00f5hjal koodis.\n<li class=\"l\"> Toetatakse stack() ja ustack() funktsioonide kasutamist kogutud andmete agregaatimiseks.\n<li class=\"l\"> V\u00f5imalus eemaldada assotsiatiivsetest massiividest elemente mis tahes t\u00fc\u00fcpidest, m\u00e4\u00e4rates neile v\u00e4\u00e4rtuseks 0.\n<li class=\"l\"> Lisatud print tegevus struktureeritud andmete tippimise ja t\u00fc\u00fcpide annotatsiooniga.\n<li class=\"l\"> Uute sisseehitatud funktsioonide cleanpath(), d_path() ja link_ntop() lisamine.\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\"> Tagatud v\u00f5imalus salvestada protsesside j\u00e4lgimise andmeid (USDT) dtprobed taask\u00e4ivituste vahel.\n<li class=\"l\"> Toetatud BTF (BPF Type Format) mehhanism, mis pakub teavet t\u00fc\u00fcpide kontrollimiseks BPF pseudokoodis.\n<li class=\"l\"> V\u00f5imalus kasutada configure skripti kokkupanekuks.  <\/ul>\n<p>Allikas: <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. 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