{"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 realizuar nj\u00eb konfigurim q\u00eb p\u00ebrfshin modalitetin TCP_NODELAY p\u00ebr t\u00ebr\u00eb sistemin","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Job Snijders, nj\u00eb zhvillues i njohur i OpenBSD, drejtues i nj\u00eb nga komiteteve n\u00eb IETF (Internet Engineering Task Force), autor i 11 RFC-ve q\u00eb lidhen me routing dhe RPKI, si dhe krijues i IRRd (Internet Routing Registry Daemon), publikoi nj\u00eb grup patch-e p\u00ebr OpenBSD q\u00eb shton parametrin e ri sysctl 'net.inet.tcp.nodelay' p\u00ebr t\u00eb \u00e7aktivizuar algoritmin e Nagle n\u00eb nivel sistemik. Ky paramet\u00ebr e li\u00e7on zhvilluesit e aplikacioneve nga vendosja e flamurit TCP_NODELAY p\u00ebr socket-et individuale. <\/p>\n

Algoritmi i Nagle-s 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 derisa t\u00eb merret nj\u00eb konfirmim p\u00ebr pranimin e t\u00eb dh\u00ebnave t\u00eb d\u00ebrguara m\u00eb par\u00eb ose deri sa t\u00eb ndodh\u00eb nj\u00eb koh\u00eb e skaduar. P\u00ebr shembull, pa p\u00ebrdorimin e agregatimit, kur d\u00ebrgohet 1 byte, d\u00ebrgohen gjithashtu 40 byte me header-a TCP dhe IP, nd\u00ebrsa me p\u00ebrdorimin e algoritmit t\u00eb Nagle-s \u2014 mesazhet e d\u00ebrguara para konfirmimit nga pala e larg\u00ebt grumbullohen dhe d\u00ebrgohen si nj\u00eb paket\u00eb. P\u00ebr shkak t\u00eb optimizimit 'delayed ACK', i cili vonon d\u00ebrgimin e paketave ACK, sinjali p\u00ebrmes paketave me konfirmim n\u00eb realitet nuk funksionon, dhe d\u00ebrgimi i mesazheve t\u00eb akumuluara kryhet me rastin e nj\u00eb kohe t\u00eb skaduar. <\/p>\n

Sneiders mban mendimin se n\u00eb realitetet moderne, algoritmi i Neagle-it, i krijuar n\u00eb koh\u00eb kur disa p\u00ebrdorues konkurrojn\u00eb p\u00ebr band\u00eb prej 1200 baud, \u00ebsht\u00eb i vjet\u00ebruar dhe n\u00eb rrjetet me shpejt\u00ebsi t\u00eb lart\u00eb<\/a> nga ai m\u00eb shum\u00eb d\u00ebm sesa p\u00ebrfitim. Koh\u00ebt e fundit, nj\u00eb pozicion t\u00eb till\u00eb e shprehu gjithashtu Mark Brooker nga kompanin\u00eb Amazon Web Services (AWS). Arsyejat p\u00ebr \u00e7aktivizimin e algoritmit t\u00eb Nejl\u00ebs si parazgjedhje mund t\u00eb gjenden 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 Nejl\u00ebs, ekziston opzioni TCP_NODELAY, e cila mund t\u00eb vendoset p\u00ebr socket-e specifike t\u00eb rrjetit. M\u00ebnyra TCP_NODELAY p\u00ebrdoret si ka shum\u00eb koh\u00eb n\u00eb aplikacione t\u00eb ndryshme OpenBSD, p\u00ebrfshir\u00eb openssh, httpd, iscsid, relayd, bgpd dhe unwind, dhe, sipas Sneiders-it, ka ardhur koha p\u00ebr t\u00eb ofruar mund\u00ebsin\u00eb e aktivizimit t\u00eb saj p\u00ebr t\u00eb gjith\u00eb socket-et TCP n\u00eb nivel sistemi. Sneiders gjithashtu sugjeron t\u00eb diskutohet p\u00ebr \u00e7aktivizimin e TCP_NODELAY si parazgjedhje dhe p\u00ebr ta kaluar algoritmin e Nejl\u00ebs n\u00eb nj\u00eb opsion t\u00eb ve\u00e7ant\u00eb aktivizues.
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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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