{"id":54585,"date":"2019-12-29T00:00:00","date_gmt":"2019-12-28T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/bitva-web-serverov-chast-2-realistichnyj-stsenarij-https"},"modified":"2020-02-18T14:02:37","modified_gmt":"2020-02-18T11:02:37","slug":"bitva-web-serverov-chast-2-realistichnyj-stsenarij-https","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/administrirovanie\/bitva-web-serverov-chast-2-realistichnyj-stsenarij-https","title":{"rendered":"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/3002396dbff5ba9ce06a715a7b0c4d2f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nFalamos sobre a metodologia em <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/ultravds\/blog\/478854\/\">primeira parte<\/a><\/noindex> artigos, e neste estamos testando HTTPS, mas em cen\u00e1rios mais realistas. Para o teste, foi obtido um certificado Let's Encrypt, e a compress\u00e3o Brotli foi ativada em 11.<\/p>\n<p>Desta vez, tentaremos reproduzir um cen\u00e1rio de implanta\u00e7\u00e3o de servidor em VDS ou como uma m\u00e1quina virtual em um host com um processador padr\u00e3o. Para isso, estabelecemos um limite de:<\/p>\n<ul>\n<li>25% \u2014 O que se traduz em uma frequ\u00eancia de ~ 1350MHz<\/li>\n<li>35% \u2014 1890MHz<\/li>\n<li>41% \u2014 2214MHz<\/li>\n<li>65% \u2014 3510MHz<\/li>\n<\/ul>\n<p>\nO n\u00famero de conex\u00f5es simult\u00e2neas foi reduzido de 500 para 1, 3, 5, 7 e 9,<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h2>Resultados:<\/h2>\n<p><\/p>\n<h3>Atrasos:<\/h3>\n<p>\nO TTFB foi especificamente destacado como um teste separado, porque o HTTPD Tools cria como que um novo usu\u00e1rio para cada solicita\u00e7\u00e3o individual. Este teste ainda est\u00e1 bastante desconectado da realidade, porque o usu\u00e1rio clicar\u00e1 em algumas p\u00e1ginas, e, na realidade, o TTFP ter\u00e1 um papel principal.<\/p>\n<p><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/cbed8f7c33e16c02d5f4a5b5351ec489.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nA primeira, na verdade, a primeira solicita\u00e7\u00e3o ap\u00f3s o primeiro in\u00edcio da m\u00e1quina virtual IIS leva, em m\u00e9dia, 120 ms.<\/p>\n<p><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/cb1655496a517a21038aa44102872969.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nTodas as solicita\u00e7\u00f5es subsequentes mostram TTFP de 1,5 ms. Apache e Nginx ficam atr\u00e1s nisso. O autor pessoalmente considera este teste o mais revelador e escolheria o vencedor apenas com base nele.<br \/>\nO resultado n\u00e3o \u00e9 surpreendente, pois o IIS j\u00e1 cacheia o conte\u00fado est\u00e1tico comprimido e n\u00e3o o recompresso toda vez que \u00e9 solicitado.<\/p>\n<h3>Tempo gasto por cliente<\/h3>\n<p>\nPara avalia\u00e7\u00e3o de desempenho, \u00e9 suficiente um teste com 1 conex\u00e3o simult\u00e2nea. <br \/>\nPor exemplo, o IIS completou o teste com 5000 usu\u00e1rios em 40 segundos, o que equivale a 123 solicita\u00e7\u00f5es por segundo.<\/p>\n<p>Nos gr\u00e1ficos abaixo, est\u00e1 o tempo at\u00e9 a transmiss\u00e3o completa do conte\u00fado do site. Esta \u00e9 a propor\u00e7\u00e3o de solicita\u00e7\u00f5es conclu\u00eddas em um determinado tempo. No nosso caso, 80% de todas as solicita\u00e7\u00f5es foram processadas em 8 ms no IIS e 4,5 ms no Apache e Nginx, e o intervalo at\u00e9 8 milissegundos foi conclu\u00eddo por 98% de todas as solicita\u00e7\u00f5es no Apache e Nginx.<\/p>\n<p><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/6ee8ef5dec443c21561a74bbd4cd9b0b.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nTempo que levou para processar 5000 solicita\u00e7\u00f5es:<\/p>\n<p><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/f6501e87858f642406b41e3a94163189.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/b82e5d1bb3e2918ba923ecbea9539bfd.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nTempo que levou para processar 5000 solicita\u00e7\u00f5es:<\/p>\n<p><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/8ce3939b78b35ac5a710482f0929714e.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nSe voc\u00ea tem uma m\u00e1quina virtual com 3,5GHz de CPU e 8 n\u00facleos, escolha o que preferir. Todos os servidores web s\u00e3o muito parecidos neste teste. Vamos falar sobre qual servidor web escolher para cada host abaixo.<\/p>\n<p>Quando se trata de uma situa\u00e7\u00e3o um pouco mais realista, todos os servidores web est\u00e3o lado a lado.<\/p>\n<h3>Taxa de transfer\u00eancia:<\/h3>\n<p>\nGr\u00e1fico de atrasos em rela\u00e7\u00e3o ao n\u00famero de conex\u00f5es simult\u00e2neas. Plano e mais baixo \u2013 melhor. Os \u00faltimos 2% foram removidos dos gr\u00e1ficos porque os tornariam ileg\u00edveis.<\/p>\n<p><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/ec6d8e53ce9ca16daf34d17e1a1cf7c6.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/e73da00772632f630cb4e1227c9aa90c.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/165b8f56f905727d5bb521196112645e.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nAgora vamos considerar a op\u00e7\u00e3o onde o servidor est\u00e1 hospedado em um hospedagem virtual. Vamos usar 4 n\u00facleos de 2.2GHz e um n\u00facleo de 1.8GHz.<\/p>\n<p><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/f1b1f297f4dee8cd170effb2bf417cd8.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/25bf2907b79e07cb97e7810fbab0a81c.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/da649793b51fc10c6a7b3957c54f7b1d.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/66ee865f013a804c1a6883068849f711.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/eaad6c11a75d6c809c71e0b78e9d0f33.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/7f0d0064d6d270aee7b334f4f6104f8b.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h2>Como escalar<\/h2>\n<p>\nSe voc\u00ea j\u00e1 viu como s\u00e3o as curvas de caracter\u00edsticas de triodes, pentodos e assim por diante, esses gr\u00e1ficos ser\u00e3o familiares para voc\u00ea. \u00c9 exatamente isso que estamos tentando capturar - satura\u00e7\u00e3o. O limite em que n\u00e3o importa quantos n\u00facleos voc\u00ea adicione, o aumento de desempenho n\u00e3o ser\u00e1 percept\u00edvel.<\/p>\n<p>Anteriormente, o desafio era processar 98% das solicita\u00e7\u00f5es com a menor lat\u00eancia em todas as requisi\u00e7\u00f5es, mantendo a curva o mais uniforme poss\u00edvel. Agora, utilizando a constru\u00e7\u00e3o de uma nova curva, encontraremos o ponto de opera\u00e7\u00e3o ideal para cada um dos servidores.<\/p>\n<p>Para isso, usaremos a m\u00e9trica Requests per second (RPR). No eixo horizontal, a frequ\u00eancia; no vertical \u2014 o n\u00famero de solicita\u00e7\u00f5es processadas por segundo, as linhas representam o n\u00famero de n\u00facleos.<\/p>\n<p><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/a001a085582ae9038cb87fea2fa9dd62.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nMostra a correla\u00e7\u00e3o de qu\u00e3o bem o Nginx processa as solicita\u00e7\u00f5es uma ap\u00f3s a outra. 8 n\u00facleos mostram-se melhores nesse tipo de teste.<\/p>\n<p><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/4eec09cee7574f521a0e9fb256053bdc.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nNeste gr\u00e1fico, \u00e9 claramente vis\u00edvel qu\u00e3o melhor (n\u00e3o muito) o Nginx opera em um n\u00facleo. Se voc\u00ea est\u00e1 utilizando Nginx, vale a pena considerar a redu\u00e7\u00e3o do n\u00famero de n\u00facleos para um, caso voc\u00ea esteja hospedando apenas conte\u00fado est\u00e1tico.<\/p>\n<p><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/183c211ab1ed69960ab5e606c284b422.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/3197721769223047246cc3b3be2e236b.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/c3882b50d227b8e2015700d451b020c8.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nEmbora o IIS tenha o menor TTFB segundo o DevTools no Chrome, ele acaba perdendo para o Nginx e o Apache em uma s\u00e9ria disputa durante o teste de estresse da Apache Foundation.<\/p>\n<p><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/964f92a23d85ea58681f481e8fa121e0.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nToda a curvatura dos gr\u00e1ficos \u00e9 reproduzida de forma muito precisa. <\/p>\n<h2>Uma esp\u00e9cie de conclus\u00e3o:<\/h2>\n<p>\nSim, o Apache realmente trabalha pior com 1 e 8 n\u00facleos, e com 4 funciona um pouco melhor. <\/p>\n<p>Sim, o Nginx com 8 n\u00facleos processa melhor as solicita\u00e7\u00f5es uma a uma, enquanto em 1 e 4 n\u00facleos funciona pior quando h\u00e1 muitas conex\u00f5es.<\/p>\n<p>Sim, o IIS prefere 4 n\u00facleos para carga multithread e prefere 8 n\u00facleos para carga de thread \u00fanica. No final, o IIS \u00e9 um pouco mais r\u00e1pido que todos os outros em 8 n\u00facleos sob alta carga, embora todos os servidores se igualem.<\/p>\n<p>Isso n\u00e3o \u00e9 um erro de medi\u00e7\u00e3o, a margem de erro aqui \u00e9 de no m\u00e1ximo \u00b11ms em lat\u00eancia e no m\u00e1ximo \u00b12-3 requisi\u00e7\u00f5es por segundo para o RPR.<\/p>\n<p>Os resultados onde 8 n\u00facleos se mostram piores n\u00e3o s\u00e3o surpreendentes; muitos n\u00facleos e SMT\/Hyperthreading reduzem significativamente o desempenho se temos prazos para concluir todo o pipeline.<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/ultravds.com\/\"><img decoding=\"async\" alt=\"Batalha dos servidores WEB. Parte 2 \u2013 um cen\u00e1rio realista de HTTPS:\" src=\"\/wp-content\/uploads\/2019\/12\/e530d5d2228f95edcd9c5af9339ee939.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/ultravds\/blog\/482230\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e \u043c\u0435\u0442\u043e\u0434\u0438\u043a\u0435 \u043c\u044b \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u044b\u0432\u0430\u043b\u0438 \u0432 \u043f\u0435\u0440\u0432\u043e\u0439 \u0447\u0430\u0441\u0442\u0438 \u0441\u0442\u0430\u0442\u044c\u0438, \u0432 \u044d\u0442\u043e\u0439 \u043c\u044b \u0442\u0435\u0441\u0442\u0438\u0440\u0443\u0435\u043c HTTPS, \u043d\u043e \u0432 \u0431\u043e\u043b\u0435\u0435 \u0440\u0435\u0430\u043b\u0438\u0441\u0442\u0438\u0447\u043d\u044b\u0445 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u044f\u0445. \u0414\u043b\u044f \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0431\u044b\u043b \u043f\u043e\u043b\u0443\u0447\u0435\u043d \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442 Let\u2019s Encrypt, \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u043e \u0441\u0436\u0430\u0442\u0438\u0435 Brotli \u043d\u0430 11. \u041d\u0430 \u044d\u0442\u043e\u0442 \u0440\u0430\u0437 \u043f\u043e\u043f\u0440\u043e\u0431\u0443\u0435\u043c \u0432\u043e\u0441\u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0441\u0442\u0438 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0439 \u0440\u0430\u0437\u0432\u0435\u0440\u0442\u044b\u0432\u0430\u043d\u0438\u044f \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043d\u0430 VDS \u0438\u043b\u0438 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u043c\u0430\u0448\u0438\u043d\u044b \u043d\u0430 \u0445\u043e\u0441\u0442\u0435 \u0441 \u0442\u0438\u043f\u043e\u0432\u044b\u043c \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u043c. \u0414\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u043b\u0438 \u043b\u0438\u043c\u0438\u0442 \u0432: [&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":[688],"tags":[],"class_list":["post-54585","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/pt\/blog\/administrirovanie\/bitva-web-serverov-chast-2-realistichnyj-stsenarij-https\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"pt_PT\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0411\u0438\u0442\u0432\u0430 WEB \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432. \u0427\u0430\u0441\u0442\u044c 2 \u2013 \u0440\u0435\u0430\u043b\u0438\u0441\u0442\u0438\u0447\u043d\u044b\u0439 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0439 HTTPS: | ProHoster\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/pt\/blog\/administrirovanie\/bitva-web-serverov-chast-2-realistichnyj-stsenarij-https\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2019-12-28T21:00:00+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2020-02-18T11:02:37+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Batalha dos servidores WEB. 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