{"id":120227,"date":"2024-10-20T01:09:07","date_gmt":"2024-10-19T23:09:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-setevogo-steka-f-stack-1-24-vypolnyaemogo-v-prostranstve-polzovatelya"},"modified":"2024-10-20T01:09:07","modified_gmt":"2024-10-19T23:09:07","slug":"vypusk-setevogo-steka-f-stack-1-24-vypolnyaemogo-v-prostranstve-polzovatelya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-setevogo-steka-f-stack-1-24-vypolnyaemogo-v-prostranstve-polzovatelya","title":{"rendered":"Vyd\u00e1n\u00ed s\u00ed\u0165ov\u00e9ho stacku F-Stack 1.24 b\u011b\u017e\u00edc\u00edho v prostoru u\u017eivatele","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
Byl zve\u0159ejn\u011bn s\u00ed\u0165ov\u00fd stack F-Stack 1.24, kter\u00fd je verz\u00ed s\u00ed\u0165ov\u00e9ho stacku FreeBSD, funguj\u00edc\u00ed v prostoru u\u017eivatele a vyu\u017e\u00edvaj\u00edc\u00ed framework DPDK pro dosa\u017een\u00ed maxim\u00e1ln\u00edho v\u00fdkonu. Projekt byl vytvo\u0159en nejv\u011bt\u0161\u00ed telekomunika\u010dn\u00ed spole\u010dnost\u00ed v \u010c\u00edn\u011b Tencent a je vyu\u017e\u00edv\u00e1n v jej\u00edch produktech a slu\u017eb\u00e1ch. K\u00f3d je naps\u00e1n v jazyce C a je distribuov\u00e1n pod licenc\u00ed BSD. Podpora pro Linux a FreeBSD je zaji\u0161t\u011bna. <\/p>\n
F-Stack umo\u017e\u0148uje vyu\u017e\u00edvat vlastn\u00ed m\u00edstn\u00ed s\u00ed\u0165ov\u00fd z\u00e1sobn\u00edk v aplikac\u00edch, kter\u00fd nen\u00ed z\u00e1visl\u00fd na s\u00ed\u0165ov\u00e9m z\u00e1sobn\u00edku opera\u010dn\u00edho syst\u00e9mu, funguj\u00edc\u00ed v u\u017eivatelsk\u00e9m prostoru a p\u0159\u00edmo pracuj\u00edc\u00ed se s\u00ed\u0165ov\u00fdm vybaven\u00edm. F-Stack se prezentuje jako \u0159e\u0161en\u00ed, kter\u00e9 zvy\u0161uje v\u00fdkon zpracovatel\u016f s\u00ed\u0165ov\u00fdch po\u017eadavk\u016f v situac\u00edch, kdy standardn\u00ed TCP\/IP z\u00e1sobn\u00edk j\u00e1dra Linuxu p\u0159edstavuje \u00fazk\u00e9 m\u00edsto a omezuje \u0161k\u00e1lovatelnost \u2014 v n\u011bkter\u00fdch situac\u00edch projekt umo\u017e\u0148uje n\u011bkolikan\u00e1sobn\u011b zv\u00fd\u0161it po\u010det zpracov\u00e1van\u00fdch drobn\u00fdch s\u00ed\u0165ov\u00fdch po\u017eadavk\u016f. Teoreticky F-Stack umo\u017e\u0148uje dos\u00e1hnout stropu s\u00ed\u0165ov\u00e9ho v\u00fdkonu mo\u017en\u00e9ho pro pou\u017e\u00edvanou s\u00ed\u0165ovou kartu. <\/p>\n
Zv\u00fd\u0161en\u00ed v\u00fdkonu je dosa\u017eeno odstran\u011bn\u00edm operac\u00ed, jako je kop\u00edrov\u00e1n\u00ed s\u00ed\u0165ov\u00fdch paket\u016f, pl\u00e1nov\u00e1n\u00ed vl\u00e1ken, zpracov\u00e1n\u00ed p\u0159eru\u0161en\u00ed a pou\u017e\u00edv\u00e1n\u00ed syst\u00e9mov\u00fdch vol\u00e1n\u00ed. Pro interakci se s\u00ed\u0165ovou kartou, bez pou\u017eit\u00ed rozhran\u00ed j\u00e1dra opera\u010dn\u00edho syst\u00e9mu, se vyu\u017e\u00edv\u00e1 framework DPDK (Data Plane Development Kit), kter\u00fd rozv\u00edj\u00ed sadu knihoven pro n\u00edzko\u00farov\u0148ovou pr\u00e1ci se s\u00ed\u0165ov\u00fdmi adapt\u00e9ry. DPDK umo\u017e\u0148uje sn\u00ed\u017eit re\u017eijn\u00ed n\u00e1klady a dostat se na minim\u00e1ln\u00ed po\u010det cykl\u016f CPU p\u0159i p\u0159\u00edjmu nebo odes\u00edl\u00e1n\u00ed s\u00ed\u0165ov\u00fdch paket\u016f. <\/p>\n
Funkcionalita TCP\/IP stacku odpov\u00edd\u00e1 s\u00ed\u0165ov\u00e9mu stacku FreeBSD 13 a byla vy\u010dlen\u011bna z t\u00e9to opera\u010dn\u00ed soustavy do nez\u00e1visl\u00e9 knihovny. Pro v\u00fdvoj aplikac\u00ed je mo\u017en\u00e9 pou\u017e\u00edt standardn\u00ed API POSIX (socket, epoll, kqueue) nebo vlastn\u00ed programov\u00e9 rozhran\u00ed zalo\u017een\u00e9 na mikrovl\u00e1kn\u00e1ch, kter\u00e9 usnad\u0148uje vytv\u00e1\u0159en\u00ed s\u00ed\u0165ov\u00fdch aplikac\u00ed a umo\u017e\u0148uje se obej\u00edt bez slo\u017eit\u00e9 logiky asynchronn\u00edho zpracov\u00e1n\u00ed po\u017eadavk\u016f. <\/p>\n