{"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\/sq\/blog\/news\/kompaniya-oracle-opublikovala-dtrace-dlya-linux-2-0-0-1-14","title":{"rendered":"Kompania Oracle publikoi DTrace p\u00ebr Linux 2.0.0-1.14","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>U publikua nj\u00eb version eksperimental i mjetit t\u00eb debugging dinamik DTrace p\u00ebr Linux 2.0.0-1.14, i implementuar si nj\u00eb proces q\u00eb punon n\u00eb hap\u00ebsir\u00ebn e p\u00ebrdoruesit, duke p\u00ebrdorur n\u00ebn-sistemin e eBPF dhe mekanizmat e ndjekjes t\u00eb ofruara nga kerneli Linux. N\u00eb funksionalitet, implementimi i DTrace mbi eBPF \u00ebsht\u00eb i ngjash\u00ebm me implementimin e par\u00eb t\u00eb DTrace p\u00ebr Linux, i realizuar n\u00eb form\u00ebn e nj\u00eb moduli t\u00eb kernelit. Kodi i projektit shp\u00ebrndahet n\u00ebn licenc\u00ebn GPLv2.     <\/p>\n<p>Mjeti mund t\u00eb p\u00ebrdoret me kernel\u00ebt standard t\u00eb Linux q\u00eb mb\u00ebshtesin BPF. P\u00ebr funksionimin e tij k\u00ebrkohet biblioteka libctf me implementimin e mb\u00ebshtetjes p\u00ebr formatin e debugging CTF (Compact Type Format), e cila \u00ebsht\u00eb pjes\u00eb e paket\u00ebs binutils, duke filluar nga versione 2.40, ose biblioteka libdtrace-ctf, e portuar nga Solaris. Dy patches opsionale p\u00ebr kernelin 6.7 ofrohen p\u00ebr t\u00eb aktivizuar mund\u00ebsi t\u00eb avancuara p\u00ebr marrjen e t\u00eb dh\u00ebnave t\u00eb m\u00ebtejshme mbi modulet dhe kernelin.    <\/p>\n<p>Teknologjia DTrace \u00ebsht\u00eb zhvilluar p\u00ebr t\u00eb zgjidhur detyra t\u00eb ndjekjes dinamike t\u00eb kernelit dhe aplikacioneve p\u00ebrfundimtare n\u00eb sistemin operativ Solaris. DTrace i jep p\u00ebrdoruesit mund\u00ebsin\u00eb p\u00ebr t\u00eb ndjekur me detaje sjelljen e sistemit dhe p\u00ebr t\u00eb kryer diagnostikimin e problemeve n\u00eb koh\u00eb reale. N\u00eb procesin e debugging DTrace nuk ndikon n\u00eb pun\u00ebn e aplikacioneve t\u00eb hulumtuara dhe nuk reflekton n\u00eb performanc\u00ebn e tyre, \u00e7ka mund\u00ebson organizimin e analiz\u00ebs s\u00eb sistemeve q\u00eb punojn\u00eb n\u00eb flukse. Nj\u00eb prej forcave t\u00eb DTrace \u00ebsht\u00eb gjuha e nivelit t\u00eb lart\u00eb D, e ngjashme me AWK, ku \u00ebsht\u00eb shum\u00eb m\u00eb e leht\u00eb t\u00eb krijoni skenar\u00eb ndjekjeje se sa me mjetet e ofruara p\u00ebr eBPF p\u00ebr shkrimin e trajtuesve n\u00eb gjuh\u00ebt C, Python dhe Lua me biblioteka t\u00eb jashtme.     <\/p>\n<p>Karakteristikat kryesore:  <\/p>\n<ul>\n<li class=\"l\"> Ofruesit e disponuesh\u00ebm:\n<ul>\n<li class=\"l\"> cpc (CPU Performacne Counter) \u2014 marrja e informacionit rreth performanc\u00ebs.\n<li class=\"l\"> dtrace \u2014 trajtuesit BEGIN, END dhe ERROR, t\u00eb aktivizuar para ose pas kontrollimeve t\u00eb tjera, si dhe kur ndodhin gabime.\n<li class=\"l\"> fbt  (Function Boundary Tracing) \u2014 gjurmimi i thirrjeve p\u00ebr funksionet e b\u00ebrtham\u00ebs.\n<li class=\"l\"> lockstat \u2014 gjurmimi i gjendjes s\u00eb bllokimeve.\n<li class=\"l\"> pid \u2014 gjurmimi i thirrjeve p\u00ebr funksionet n\u00eb procese q\u00eb operojn\u00eb n\u00eb hap\u00ebsir\u00ebn e p\u00ebrdoruesit.\n<li class=\"l\"> proc \u2014 gjurmimi i aktivitetit t\u00eb lidhur me proceset, si\u00e7 jan\u00eb nisja dhe p\u00ebrfundimi i pun\u00ebs (fork, exec, exit, fault).\n<li class=\"l\"> profile \u2014 ruajtja e statistikave t\u00eb performanc\u00ebs p\u00ebrmes intervaleve t\u00eb caktuara kohore.\n<li class=\"l\"> sdt, rawtp \u2014 gjurmimi statik i b\u00ebrtham\u00ebs (SDT \u2014 Statically Defined Tracing).\n<li class=\"l\"> usdt: gjurmimi statik i aplikacioneve (USDT \u2014 Userspace Statically Defined Tracing)\n<li class=\"l\"> sched \u2014 gjurmimi i shp\u00ebrndarjes s\u00eb burimeve t\u00eb CPU.\n<li class=\"l\"> sycall \u2014 gjurmimi i hyrjes n\u00eb thirrjet sistemore dhe daljes prej tyre.    <\/ul>\n<li class=\"l\"> Agregimi i t\u00eb dh\u00ebnave t\u00eb mbledhura: mund\u00ebsia e aplikimit t\u00eb funksioneve agregate (avg, count, llquantize, lquantize, max, min, quantize, stddev dhe sum) dhe veprimeve agregate (clear, normalize, printa). Mb\u00ebshtetje p\u00ebr ruajtjen e rezultateve t\u00eb aplikimit t\u00eb funksioneve agregate n\u00eb p\u00ebrshkrime normale dhe asociative.\n<li class=\"l\"> Mb\u00ebshtetje p\u00ebr gjurmimin spekulativ, q\u00eb lejon gjurmimin efemer t\u00eb t\u00eb dh\u00ebnave, duke vendosur se cilat prej tyre duhet t\u00eb regjistrohen n\u00eb tamponin e gjurmimit dhe cilat t\u00eb shpallen. Disponohen funksionet: speculation, speculate, commit dhe discard.\n<li class=\"l\"> Mb\u00ebshtetje p\u00ebr variabla globale dhe lokale, TLS (Thread-Local Storage), p\u00ebrshkrime asociative dhe vargje.\n<li class=\"l\"> Ofrimi i variablave t\u00eb nd\u00ebrtuar: arg0 \u2014 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\"> Mb\u00ebshtetje p\u00ebr veprime: exit, freopen, ftruncate, mod, printa, printf, raise, setopt, stack, sym, system, trace, tracemem, uaddr, umod, ustack dhe usym.\n<li class=\"l\"> Prania e funksioneve t\u00eb integruara: 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\"> Prania e num\u00ebruesve t\u00eb t\u00eb dh\u00ebnave q\u00eb nuk kapen n\u00eb tampon\u00ebt e gjurmimit.\n<li class=\"l\"> Mb\u00ebshtetje p\u00ebr compilimin e skenar\u00ebve t\u00eb gjurmimit n\u00eb gjuh\u00ebn D n\u00eb form\u00ebn e programeve BPF.\n<li class=\"l\"> Parakomplimi i funksioneve BPF p\u00ebr thirrjet e bibliotek\u00ebs.\n<li class=\"l\"> Opsioni bpflog p\u00ebr marrjen e logut t\u00eb verifikimit t\u00eb programeve BPF q\u00eb ngarkohen.\n<li class=\"l\"> Gjenerimi dinamik i kodit dhe parakomplimi i kodit p\u00ebr rip\u00ebrdorim n\u00eb programet BPF.    <\/ul>\n<p>Ndryshimet n\u00eb versionin e ri:  <\/p>\n<ul>\n<li class=\"l\"> N\u00eb ofruesin pid, i aplikuar p\u00ebr gjurmimin e proceseve n\u00eb hap\u00ebsir\u00ebn e p\u00ebrdoruesit, \u00ebsht\u00eb shtuar mb\u00ebshtetje p\u00ebr gjurmimin e ekzekutimit t\u00eb instruksioneve sipas pozit\u00ebs s\u00eb tyre n\u00eb kod.\n<li class=\"l\"> Shtuar mb\u00ebshtetje p\u00ebr p\u00ebrdorimin e funksioneve stack() dhe ustack() p\u00ebr agregimin e t\u00eb dh\u00ebnave t\u00eb mbledhura.\n<li class=\"l\"> Mund\u00ebsia p\u00ebr t\u00eb fshir\u00eb elemente t\u00eb \u00e7do lloji nga p\u00ebrshkrimet asociative duke i caktuar atyre literal 0.\n<li class=\"l\"> Shtuar veprimi print p\u00ebr t\u00eb shp\u00ebrndar\u00eb t\u00eb dh\u00ebna t\u00eb strukturuara me annotacione tipesh.\n<li class=\"l\"> Shtuar funksionet e reja t\u00eb integruara cleanpath(), d_path() dhe link_ntop().\n<li class=\"l\"> Shtuar parametri \u2018-xcpu\u2019, q\u00eb lejon lidhjen e kontrollimeve me CPU t\u00eb caktuara.\n<li class=\"l\"> Shtuar parametri \u2018-xlockmem\u2019 p\u00ebr t\u00eb kufizuar madh\u00ebsin\u00eb e memories.\n<li class=\"l\"> E mund\u00ebsuar ruajtja e t\u00eb dh\u00ebnave t\u00eb gjurmimit t\u00eb proceseve (USDT) midis rilindjeve t\u00eb dtprobed.\n<li class=\"l\"> Mb\u00ebshtetje p\u00ebr mekanizmin BTF (BPF Type Format), i cili ofron informacion p\u00ebr verifikimin e tipeve n\u00eb pseudokodin BPF.\n<li class=\"l\"> Mund\u00ebsia p\u00ebr p\u00ebrdorimin e skriptit configure p\u00ebr nd\u00ebrtim.  <\/ul>\n<p>Burimi: <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 5.0.2 - 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 \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, 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