{"id":52859,"date":"2019-11-18T00:00:00","date_gmt":"2019-11-17T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/vypusk-setevogo-steka-f-stack-1-13-vypolnyaemogo-v-prostranstve-polzovatelya"},"modified":"2020-02-18T14:00:40","modified_gmt":"2020-02-18T11:00:40","slug":"vypusk-setevogo-steka-f-stack-1-13-vypolnyaemogo-v-prostranstve-polzovatelya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/vypusk-setevogo-steka-f-stack-1-13-vypolnyaemogo-v-prostranstve-polzovatelya","title":{"rendered":"Rilascio del network stack F-Stack 1.13, eseguito in spazio utente","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dopo un anno e mezzo di sviluppo <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/F-Stack\/f-stack\/releases\/tag\/v1.13\">si \u00e8 svolto<\/a><\/noindex> rilascio del progetto <noindex><a rel=\"nofollow\" href=\"http:\/\/www.f-stack.org\">F-Stack 1.13<\/a><\/noindex>, che sviluppa uno stack di rete ad alte prestazioni funzionante nello spazio utente, basato su un framework <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48099\">DPDK<\/a><\/noindex> e sullo stack TCP\/IP di FreeBSD (F-Stack non \u00e8 legato a FreeBSD e considera Linux come piattaforma principale per l'applicazione). Il progetto \u00e8 utilizzato in vari prodotti e servizi <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Tencent\">Tencent<\/a><\/noindex>, la pi\u00f9 grande azienda di telecomunicazioni in Cina. Codice <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/F-Stack\/f-stack\">\u00e8 distribuito<\/a><\/noindex> sotto licenza BSD. Supporta il funzionamento in Linux e FreeBSD.<\/p>\n<p>F-Stack consente di organizzare l'interazione di rete nelle applicazioni, utilizzando invece dello stack di rete del sistema operativo il proprio stack di rete, funzionante nello spazio utente e che lavora direttamente con l'hardware di rete.  <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/F-Stack\/f-stack\/tree\/dev\/app\">Sono forniti<\/a><\/noindex> editors specializzati di Nginx e Redis, adattati per utilizzare F-Stack.<\/p>\n<p>Per lo sviluppo di applicazioni <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/F-Stack\/f-stack\/blob\/dev\/doc\/F-Stack_API_Reference.md\">\u00e8 supportato<\/a><\/noindex> sia come Posix API standard (Socket, Epoll, Kqueue), semplificando la migrazione delle applicazioni esistenti su F-Stack, sia come interfaccia di programmazione personalizzata basata su coroutine (microthread), facilitando la creazione di applicazioni di rete e consentendo di evitare complessit\u00e0 nella logica di gestione asincrona delle richieste. F-Stack fornisce anche strumenti per semplificare l'uso in applicazioni con architettura multi-processo.<\/p>\n<p>Per interagire con la scheda di rete, bypassando le interfacce del kernel del sistema operativo, viene utilizzato il framework <noindex><a rel=\"nofollow\" href=\"http:\/\/dpdk.org\/\">DPDK<\/a><\/noindex> (Data Plane Development Kit), che fornisce un insieme di librerie per un'interazione a basso livello con adattatori di rete, interazione in sistemi multicore, utilizzo di buffer circolari e pagine di memoria grandi (\"huge page\"). L'uso di DPDK consente di ricevere e inviare pacchetti di rete eseguendo un numero minimo di cicli CPU (circa 80 cicli per pacchetto) e di sviluppare componenti ad alte prestazioni per lo stack di rete. La funzionalit\u00e0 dello stack TCP\/IP \u00e8 stata direttamente ereditata da FreeBSD 11.1 ed \u00e8 stata separata in una libreria indipendente dal sistema operativo.<\/p>\n<p>F-Stack si presenta come una soluzione applicabile per migliorare le prestazioni dei gestori di richieste di rete, quando l'utilizzo dello stack TCP\/IP standard del kernel Linux diventa un collo di bottiglia e limita la scalabilit\u00e0. L'implementazione di F-Stack fornisce un'ottimizzazione tangibile e consente, in alcune situazioni, di aumentare drasticamente il numero di piccole richieste trattabili.  <\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/raw.githubusercontent.com\/F-Stack\/f-stack\/dev\/CPS_Reuseport.png\"><img decoding=\"async\" alt=\"Rilascio del network stack F-Stack 1.13, eseguito in spazio utente\" src=\"\/wp-content\/uploads\/2019\/11\/c4d5710541cea747f158e1b279e08dda.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/raw.githubusercontent.com\/F-Stack\/f-stack\/dev\/Bandwidth.png\"><img decoding=\"async\" alt=\"Rilascio del network stack F-Stack 1.13, eseguito in spazio utente\" src=\"\/wp-content\/uploads\/2019\/11\/81d513c7b6288c8a09b893613e2c67dc.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Il miglioramento delle prestazioni si ottiene escludendo operazioni come la copia dei pacchetti di rete, la pianificazione dei thread, la gestione delle interruzioni e l'uso delle chiamate di sistema. F-Stack consente di raggiungere il limite delle prestazioni di rete possibile con la scheda di rete utilizzata. Ad esempio, le soluzioni basate su F-Stack hanno dimostrato la capacit\u00e0 di gestire 10 milioni di connessioni parallele, 5 milioni di richieste al secondo e 1 milione di connessioni al secondo.<\/p>\n<\/ul>\n<p>Nel nuovo rilascio:<\/p>\n<ul>\n<li class=\"l\"> Supporto VLAN aggiunto;\n<li class=\"l\"> \u00c8 stata garantita la possibilit\u00e0 di funzionare in container isolati basati su Docker;\n<li class=\"l\"> Interfacce ff_dup, ff_dup2, ff_ioctl_freebsd, ff_getsockopt_freebsd e ff_setsockopt_freebsd implementate;\n<li class=\"l\"> \u00c8 stato aggiunto il parametro \"idle_sleep\" per ridurre il carico sulla CPU in assenza di pacchetti in arrivo\n<li class=\"l\"> Supporto per la compilazione per l'architettura ARM64 aggiunto;\n<li class=\"l\"> Nella versione di Nginx tradotta su F-Stack, i gestori getpeername, getsockname e shutdown sono stati sostituiti;\n<li class=\"l\"> Aggiornamento alla nuova versione DPDK 17.11.4 LTS completato;\n<li class=\"l\"> \u00c8 stata aggiunta l'utilit\u00e0 <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/F-Stack\/f-stack\/tree\/dev\/tools\/traffic\">traffic<\/a><\/noindex> per visualizzare il traffico attuale gestito dalle applicazioni basate su F-Stack (ricorda trafshow).\n<\/ul>\n<p>Nei piani futuri <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/F-Stack\/f-stack\/blob\/dev\/doc\/F-Stack_Roadmap.md\">si segnala<\/a><\/noindex> supporto IPv6, fornitura di API per i linguaggi Python, PHP e Go, supporto per l'API Cyptodev (<noindex><a rel=\"nofollow\" href=\"https:\/\/www.intel.com\/content\/www\/us\/en\/architecture-and-technology\/intel-quick-assist-technology-overview.html\">Intel QAT<\/a><\/noindex>), utilizzo di zerocopy nell'invio di pacchetti, supporto <noindex><a rel=\"nofollow\" href=\"https:\/\/spdk.io\/\">SPDK<\/a><\/noindex> e possibilit\u00e0 di avvio come processo in background.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51884\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u043b\u0443\u0442\u043e\u0440\u0430 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0430 F-Stack 1.13, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0439 \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 \u0432\u044b\u0441\u043e\u043a\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u0441\u0435\u0442\u0435\u0432\u043e\u0439 \u0441\u0442\u0435\u043a, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043d\u0430 \u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0435 DPDK \u0438 TCP\/IP \u0441\u0442\u0435\u043a\u0435 FreeBSD (F-Stack \u043d\u0435 \u043f\u0440\u0438\u0432\u044f\u0437\u0430\u043d \u043a FreeBSD \u0438 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u043f\u0435\u0440\u0432\u0438\u0447\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u043b\u044f \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u0442 Linux). \u041f\u0440\u043e\u0435\u043a\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0432 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430\u0445 \u0438 \u0441\u0435\u0440\u0432\u0438\u0441\u0430\u0445 Tencent, \u043a\u0440\u0443\u043f\u043d\u0435\u0439\u0448\u0435\u0439 \u0432 \u041a\u0438\u0442\u0430\u0435 \u0442\u0435\u043b\u0435\u043a\u043e\u043c\u043c\u0443\u043d\u0438\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438. \u041a\u043e\u0434 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 [&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-52859","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u043b\u0443\u0442\u043e\u0440\u0430 \u043b\u0435\u0442 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