{"id":115792,"date":"2024-05-15T08:59:29","date_gmt":"2024-05-15T06:59:29","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dlya-openbsd-realizovana-nastrojka-vklyuchayushhaya-rezhim-tcp_nodelay-dlya-vsej-sistemy"},"modified":"2026-02-14T13:19:52","modified_gmt":"2026-02-14T11:19:52","slug":"dlya-openbsd-realizovana-nastrojka-vklyuchayushhaya-rezhim-tcp_nodelay-dlya-vsej-sistemy","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/dlya-openbsd-realizovana-nastrojka-vklyuchayushhaya-rezhim-tcp_nodelay-dlya-vsej-sistemy","title":{"rendered":"P\u00ebr OpenBSD \u00ebsht\u00eb zbatuar nj\u00eb konfigurim q\u00eb aktivizon modalitetin TCP_NODELAY p\u00ebr t\u00eb gjith\u00eb sistemin","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Job Snijders, nj\u00eb zhvillues i njohur i OpenBSD, udh\u00ebheq\u00ebs i nj\u00eb prej komiteteve n\u00eb IETF (Internet Engineering Task Force), autor i 11 RFC q\u00eb lidhen me ruterimin dhe RPKI, dhe krijues i IRRd (Internet Routing Registry Daemon), publikoi nj\u00eb grup patches p\u00ebr OpenBSD q\u00eb shton nj\u00eb paramet\u00ebr t\u00eb ri sysctl 'net.inet.tcp.nodelay' p\u00ebr t\u00eb \u00e7aktivizuar algoritmin Nagle n\u00eb nivelin e sistemit. Ky paramet\u00ebr i lejon zhvilluesit e aplikacioneve t\u00eb shmangin vendosjen e flagut TCP_NODELAY p\u00ebr socket t\u00eb ve\u00e7anta. <\/p>\n

Algoritmi Nagle p\u00ebrdoret p\u00ebr t\u00eb agreguar mesazhe t\u00eb vogla me q\u00ebllim uljen e trafikut. Algoritmi ndalon d\u00ebrgimin e segmenteve t\u00eb rinj TCP deri n\u00eb marrjen e konfirmimit p\u00ebr pranimin e t\u00eb dh\u00ebnave t\u00eb d\u00ebrguara m\u00eb par\u00eb ose deri n\u00eb p\u00ebrfundimin e nj\u00eb koh\u00ebzgjatjeje. P\u00ebr shembull, pa p\u00ebrdorimin e agregatimit, gjat\u00eb d\u00ebrgimit t\u00eb 1 byte, d\u00ebrgohen gjithashtu 40 byte me titujt TCP dhe IP t\u00eb paket\u00ebs, nd\u00ebrsa me p\u00ebrdorimin e algoritmit Nagle - mesazhet e d\u00ebrguara para konfirmimit nga ana e larg\u00ebt grumbullohen dhe d\u00ebrgohen si nj\u00eb paket\u00eb. P\u00ebr shkak t\u00eb optimizimit 'delayed ACK', q\u00eb vonon d\u00ebrgimin e paketave ACK, sinjali p\u00ebrmes paketimeve me konfirmim n\u00eb t\u00eb v\u00ebrtet\u00eb nuk funksionon, dhe d\u00ebrgimi i mesazheve t\u00eb grumbulluara b\u00ebhet vet\u00ebm kur p\u00ebrfundon koh\u00ebzgjatja. <\/p>\n

Snijders \u00ebsht\u00eb i mendimit se, n\u00eb kushtet e sotme, algoritmi i Nagle, i zhvilluar n\u00eb nj\u00eb koh\u00eb kur disa p\u00ebrdorues konkurronin p\u00ebr nj\u00eb brez prej 1200 bod\u00ebsh, \u00ebsht\u00eb i vjet\u00ebruar dhe n\u00eb rrjetet me shpejt\u00ebsi t\u00eb lart\u00eb<\/a> sjell m\u00eb shum\u00eb d\u00ebm sesa dobi. S\u00eb fundmi, nj\u00eb q\u00ebndrim t\u00eb ngjash\u00ebm shprehu edhe Marc Brooker nga Amazon Web Services (AWS). Me argumentet n\u00eb favor t\u00eb \u00e7aktivizimit t\u00eb algoritmit t\u00eb Nagle si parazgjedhje mund t\u00eb njiheni n\u00eb nj\u00eb sh\u00ebnim t\u00eb publikuar disa dit\u00eb m\u00eb par\u00eb. <\/p>\n

P\u00ebr \u00e7aktivizimin e algoritmit t\u00eb Nagle parashikohet opsioni TCP_NODELAY, i cili mund t\u00eb vendoset p\u00ebr socket-e t\u00eb ve\u00e7anta t\u00eb rrjetit. Modaliteti TCP_NODELAY p\u00ebrdoret prej koh\u00ebsh n\u00eb shum\u00eb aplikacione t\u00eb OpenBSD, p\u00ebrfshir\u00eb openssh, httpd, iscsid, relayd, bgpd dhe unwind, dhe sipas Snijders ka ardhur koha q\u00eb t\u00eb ofrohet mund\u00ebsia p\u00ebr ta aktivizuar at\u00eb p\u00ebr t\u00eb gjith\u00eb socket-et TCP n\u00eb nivel sistemi. Snijders propozon gjithashtu t\u00eb diskutohet aktivizimi i TCP_NODELAY si parazgjedhje dhe kalimi i algoritmit t\u00eb Nagle n\u00eb kategorin\u00eb e nj\u00eb opsioni t\u00eb ve\u00e7ant\u00eb q\u00eb aktivizohet sipas nevoj\u00ebs.
\n
Burimi: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u0436\u043e\u0431 \u0421\u043d\u0435\u0439\u0434\u0435\u0440\u0441 (Job Snijders), \u043c\u0430\u0441\u0442\u0438\u0442\u044b\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a OpenBSD, \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c \u043e\u0434\u043d\u043e\u0433\u043e \u0438\u0437 \u043a\u043e\u043c\u0438\u0442\u0435\u0442\u043e\u0432 \u0432 IETF (Internet Engineering Task Force), \u0430\u0432\u0442\u043e\u0440 11 RFC, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u0438 RPKI, \u0438 \u0441\u043e\u0437\u0434\u0430\u0442\u0435\u043b\u044c IRRd (Internet Routing Registry Daemon), \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439 \u0434\u043b\u044f OpenBSD, \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0445 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