{"id":5595,"date":"2026-04-11T03:17:57","date_gmt":"2026-04-11T06:17:57","guid":{"rendered":"https:\/\/helpsysadmin.com.br\/blog\/?p=5595"},"modified":"2026-05-07T17:16:44","modified_gmt":"2026-05-07T20:16:44","slug":"como-reduzir-uso-cpu-directadmin","status":"publish","type":"post","link":"https:\/\/helpsysadmin.com.br\/blog\/como-reduzir-uso-cpu-directadmin\/","title":{"rendered":"Como Reduzir Uso de CPU no DirectAdmin: Guia Completo 2026"},"content":{"rendered":"<div id=\"helps-3281269241\" class=\"helps-before-content-2 helps-entity-placement\"><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3661896953164277\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- 2anuncios display quadrado -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-3661896953164277\"\r\n     data-ad-slot=\"5051229894\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n<p>Gerenciar um servidor web exige aten\u00e7\u00e3o constante aos recursos de hardware. Se voc\u00ea \u00e9 um administrador de sistemas ou um dono de site, j\u00e1 deve ter se deparado com o alerta de &#8220;High CPU Usage&#8221;. Aprender <strong>como reduzir uso de CPU no DirectAdmin<\/strong> n\u00e3o \u00e9 apenas uma quest\u00e3o de economia, mas de garantir a estabilidade e a velocidade da experi\u00eancia do usu\u00e1rio final.<\/p>\n\n\n\n<p>Neste guia exaustivo, vamos explorar desde o diagn\u00f3stico b\u00e1sico at\u00e9 as configura\u00e7\u00f5es mais avan\u00e7adas do CustomBuild para transformar seu servidor lento em uma m\u00e1quina de alta performance.<\/p>\n\n\n\n<p>Se o seu servidor com DirectAdmin est\u00e1 com alto uso de CPU, \u00e9 essencial entender o ambiente como um todo. Para isso, veja o <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/guia-completo-directadmin-administradores\/\">guia completo do DirectAdmin para administradores<\/a><\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-1-entendendo-o-problema-por-que-a-cpu-sobe\">1. Entendendo o Problema: Por que a CPU sobe?<\/h3>\n\n\n\n<p>Antes de aplicarmos qualquer comando, precisamos entender que o DirectAdmin, por si s\u00f3, consome pouqu\u00edssima CPU. O painel \u00e9 apenas uma interface de gerenciamento. O verdadeiro consumo vem dos &#8220;servi\u00e7os de entrega&#8221;, como:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Webserver (Apache\/Nginx\/OpenLiteSpeed):<\/strong> Processamento de requisi\u00e7\u00f5es HTTP.<\/li>\n\n\n\n<li><strong>Interpretador PHP:<\/strong> Processamento de scripts e plugins (especialmente no WordPress).<\/li>\n\n\n\n<li><strong>Banco de Dados (MySQL\/MariaDB):<\/strong> Consultas complexas e falta de indexa\u00e7\u00e3o.<\/li>\n\n\n\n<li><strong>Seguran\u00e7a e Logs:<\/strong> Escaneamento de malwares e processos de backup.<\/li>\n<\/ul>\n\n\n\n<p>O alto consumo de CPU pode estar ligado \u00e0 configura\u00e7\u00e3o do servidor. Confira como administrar corretamente no <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/guia-completo-directadmin-administradores\/\">DirectAdmin para administradores<\/a><\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-2-o-primeiro-passo-diagnostico-de-precisao\">2. O Primeiro Passo: Diagn\u00f3stico de Precis\u00e3o<\/h3>\n\n\n\n<p>Para <strong>reduzir uso de CPU no DirectAdmin<\/strong>, voc\u00ea n\u00e3o pode agir no escuro. O primeiro passo \u00e9 o diagn\u00f3stico via terminal SSH.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-usando-o-comando-htop\">Usando o comando htop<\/h4>\n\n\n\n<p>O <code>htop<\/code> \u00e9 uma vers\u00e3o visual e aprimorada do cl\u00e1ssico <code>top<\/code>. Se ele n\u00e3o estiver instalado, voc\u00ea pode instal\u00e1-lo facilmente via <code>yum install htop<\/code> ou <code>apt install htop<\/code>. Ao abri-lo, pressione <strong>P<\/strong> para ordenar os processos por consumo de CPU. Observe as colunas &#8220;Command&#8221; e &#8220;User&#8221;. Se muitos processos pertencem a um \u00fanico usu\u00e1rio, voc\u00ea j\u00e1 encontrou a fonte do problema.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-o-monitor-de-processos-do-directadmin\">O Monitor de Processos do DirectAdmin<\/h4>\n\n\n\n<p>Se voc\u00ea prefere a interface gr\u00e1fica, o DirectAdmin oferece uma ferramenta nativa. V\u00e1 em: <strong>Admin Level &gt; System Info &amp; Files &gt; Process Monitor.<\/strong> L\u00e1, voc\u00ea ver\u00e1 uma lista em tempo real do que est\u00e1 acontecendo. Fique atento a scripts PHP que ficam &#8220;pendurados&#8221; por muito tempo, pois eles s\u00e3o os principais culpados pelo esgotamento de recursos.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-migracao-para-o-php-fpm-a-mudanca-que-salva-servidores\">3. Migra\u00e7\u00e3o para o PHP-FPM: A Mudan\u00e7a que Salva Servidores<\/h3>\n\n\n\n<p>Muitas instala\u00e7\u00f5es antigas do DirectAdmin ainda utilizam o <code>suPHP<\/code> ou <code>mod_php<\/code>. Se o seu objetivo \u00e9 <strong>reduzir uso de CPU no DirectAdmin<\/strong>, voc\u00ea precisa migrar para o <strong>PHP-FPM<\/strong>.<\/p>\n\n\n\n<p>O PHP-FPM (FastCGI Process Manager) \u00e9 muito mais eficiente porque mant\u00e9m &#8220;workers&#8221; (trabalhadores) prontos para processar requisi\u00e7\u00f5es, eliminando o custo de CPU de ter que iniciar um novo processo PHP a cada clique no site.<\/p>\n\n\n\n<p><strong>Como ativar via CustomBuild:<\/strong><\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#2e3440ff\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>cd \/usr\/local\/directadmin\/custombuild\n.\/build set php1_mode php-fpm\n.\/build php n\n.\/build rewrite_confs<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D8DEE9\">cd<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">usr<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">local<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">directadmin<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">custombuild<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">set<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">php1_mode<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">php<\/span><span style=\"color: #81A1C1\">-<\/span><span style=\"color: #D8DEE9\">fpm<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">php<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">n<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">rewrite_confs<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Essa mudan\u00e7a pode reduzir a carga do servidor instantaneamente em at\u00e9 30% em ambientes com muito tr\u00e1fego.<\/p>\n\n\n<div id=\"helps-1194466380\"><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3661896953164277\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- quadrado -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-3661896953164277\"\r\n     data-ad-slot=\"7475053573\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p>Identificar o problema \u00e9 apenas o primeiro passo. Veja a configura\u00e7\u00e3o completa no <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/guia-completo-directadmin-administradores\/\">guia completo do DirectAdmin<\/a><\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-4-atualizacao-de-versoes-do-php\">4. Atualiza\u00e7\u00e3o de Vers\u00f5es do PHP<\/h3>\n\n\n\n<p>Utilizar vers\u00f5es legadas como PHP 5.6 ou 7.2 \u00e9 um erro comum. As vers\u00f5es modernas, como o <strong>PHP 8.1, 8.2 e 8.3<\/strong>, trazem otimiza\u00e7\u00f5es no motor Zend que permitem processar o mesmo script usando muito menos ciclos de CPU. Ao atualizar, voc\u00ea n\u00e3o ganha apenas seguran\u00e7a, mas uma redu\u00e7\u00e3o real no consumo de hardware.<\/p>\n\n\n\n<p>Dando continuidade ao nosso roteiro de otimiza\u00e7\u00e3o, ap\u00f3s ajustarmos o interpretador PHP, precisamos olhar para os dois pilares que sustentam a maioria das aplica\u00e7\u00f5es web: o Servidor Web e o Banco de Dados.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. OpenLiteSpeed: O Webserver que Salva sua CPU<\/h3>\n\n\n\n<p>Se o seu servidor ainda roda apenas com o Apache &#8220;puro&#8221;, voc\u00ea est\u00e1 desperdi\u00e7ando ciclos de processamento. O Apache \u00e9 robusto, mas em cen\u00e1rios de alto tr\u00e1fego, ele cria muitos processos &#8220;child&#8221;, o que eleva drasticamente o consumo de recursos.<\/p>\n\n\n\n<p>Para <strong>reduzir uso de CPU no DirectAdmin<\/strong>, a migra\u00e7\u00e3o para o <strong>OpenLiteSpeed (OLS)<\/strong> \u00e9, muitas vezes, a solu\u00e7\u00e3o definitiva. O OLS utiliza uma arquitetura baseada em eventos (similar ao Nginx), mas com o benef\u00edcio de interpretar nativamente as regras do <code>.htaccess<\/code> e possuir o m\u00f3dulo de cache mais r\u00e1pido do mercado (LSCache).<\/p>\n\n\n\n<p><strong>Vantagens do OpenLiteSpeed para a CPU:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LSPHP:<\/strong> O processo PHP do LiteSpeed \u00e9 mais eficiente que o PHP-FPM padr\u00e3o.<\/li>\n\n\n\n<li><strong>Menos Overhead:<\/strong> Lida com milhares de conex\u00f5es simult\u00e2neas usando apenas alguns megabytes de RAM e quase zero de CPU extra.<\/li>\n\n\n\n<li><strong>Compacta\u00e7\u00e3o Gzip\/Brotli:<\/strong> Realizada de forma muito mais otimizada a n\u00edvel de kernel.<\/li>\n<\/ul>\n\n\n\n<p><strong>Como migrar via CustomBuild:<\/strong><\/p>\n\n\n\n<p>Bash<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#2e3440ff\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>cd \/usr\/local\/directadmin\/custombuild\n.\/build set webserver openlitespeed\n.\/build set php1_mode lsphp\n.\/build openlitespeed\n.\/build php n\n.\/build rewrite_confs<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D8DEE9\">cd<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">usr<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">local<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">directadmin<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">custombuild<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">set<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">webserver<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">openlitespeed<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">set<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">php1_mode<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">lsphp<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">openlitespeed<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">php<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">n<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">rewrite_confs<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">5. Otimiza\u00e7\u00e3o de Banco de Dados (MySQL\/MariaDB)<\/h3>\n\n\n\n<p>Um dos maiores &#8220;comedores&#8221; de processamento escondidos s\u00e3o as consultas SQL mal otimizadas. Quando um site WordPress, por exemplo, tenta buscar informa\u00e7\u00f5es em uma tabela com milhares de linhas sem \u00edndices, a CPU do servidor sobe para 100% tentando processar essa l\u00f3gica.<\/p>\n\n\n\n<p>Para <strong>reduzir uso de CPU no DirectAdmin<\/strong> atrav\u00e9s do banco de dados, siga estes passos:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">A. Utilize o MySQLTuner<\/h4>\n\n\n\n<p>O MySQLTuner \u00e9 um script em Perl que analisa o desempenho do seu MariaDB\/MySQL e sugere vari\u00e1veis de configura\u00e7\u00e3o para o seu arquivo <code>my.cnf<\/code>.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#2e3440ff\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>wget http:\/\/mysqltuner.pl\/ -O mysqltuner.pl\nperl mysqltuner.pl<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D8DEE9\">wget<\/span><span style=\"color: #D8DEE9FF\"> http<\/span><span style=\"color: #ECEFF4\">:<\/span><span style=\"color: #616E88\">\/\/mysqltuner.pl\/ -O mysqltuner.pl<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9\">perl<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">mysqltuner<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">pl<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Ele indicar\u00e1 se voc\u00ea precisa aumentar o <code>query_cache_size<\/code>, o <code>innodb_buffer_pool_size<\/code> ou o <code>tmp_table_size<\/code>. Ajustar esses valores evita que o servidor precise ler o disco r\u00edgido constantemente, o que poupa CPU.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">B. Ative o Slow Query Log<\/h4>\n\n\n\n<p>Identificar qual site est\u00e1 causando o gargalo \u00e9 crucial. Ative o log de consultas lentas editando o arquivo <code>\/etc\/my.cnf<\/code>:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#2e3440ff\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>slow_query_log = 1\nslow_query_log_file = \/var\/lib\/mysql\/slow-queries.log\nlong_query_time = 2<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D8DEE9\">slow_query_log<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9\">slow_query_log_file<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">\/var<\/span><span style=\"color: #D8DEE9FF\">\/<\/span><span style=\"color: #D8DEE9\">lib<\/span><span style=\"color: #D8DEE9FF\">\/mysql\/slow-queries.log<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9\">long_query_time<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">2<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Depois de algumas horas, verifique o arquivo. Se encontrar consultas que demoram mais de 2 segundos, voc\u00ea encontrou o motivo da lentid\u00e3o e poder\u00e1 otimizar as tabelas espec\u00edficas ou plugins que as geram.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. Implementando Cache de Objeto (Redis e Memcached)<\/h3>\n\n\n\n<p>Muitas vezes, a CPU trabalha demais repetindo a mesma tarefa. Por exemplo, processar o menu de um site toda vez que um usu\u00e1rio carrega uma p\u00e1gina. O Cache de Objeto armazena esses resultados na mem\u00f3ria RAM.<\/p>\n\n\n<div id=\"helps-3966489183\"><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3661896953164277\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- quadrado -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-3661896953164277\"\r\n     data-ad-slot=\"7475053573\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<p>Ao instalar o <strong>Redis<\/strong>, voc\u00ea retira a carga da CPU e do Banco de Dados. No DirectAdmin, isso \u00e9 feito de forma simples:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#2e3440ff\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>cd \/usr\/local\/directadmin\/custombuild\n.\/build set redis yes\n.\/build redis<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D8DEE9\">cd<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">usr<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">local<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">directadmin<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">custombuild<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">set<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">redis<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">yes<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">redis<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Ap\u00f3s a instala\u00e7\u00e3o, instale o plugin de cache no site do seu cliente (como o Redis Object Cache para WordPress) e a diferen\u00e7a no uso de CPU ser\u00e1 not\u00e1vel imediatamente.<\/p>\n\n\n\n<p>Muitas vezes, o administrador busca o problema dentro dos arquivos do site, quando na verdade o consumo excessivo de recursos vem de fora. Ataques de for\u00e7a bruta, scrapers de conte\u00fado e bots maliciosos podem sobrecarregar o processador.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>O alto uso de CPU pode estar ligado a diversos fatores. Veja tamb\u00e9m:<\/p>\n<\/blockquote>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/otimizar-directadmin-alto-trafego\/\">como otimizar DirectAdmin<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/directadmin-lento-diagnostico-solucao\/\">como melhorar performance do servidor<\/a><\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">7. Bloqueio de Bots e Crawlers Agressivos<\/h3>\n\n\n\n<p>Voc\u00ea sabia que quase 40% do tr\u00e1fego da internet \u00e9 composto por bots? Alguns s\u00e3o \u00fateis (Google), mas outros, como Semrush, Ahrefs e buscadores chineses ou russos (Baidu\/Yandex), podem indexar seu site de forma t\u00e3o agressiva que impedem voc\u00ea de <strong>reduzir uso de CPU no DirectAdmin<\/strong>.<\/p>\n\n\n\n<p>Para mitigar isso, voc\u00ea deve <a href=\"https:\/\/helpsysadmin.com.br\/blog\/configurar-login-automatico-phpmyadmin\/\" data-internallinksmanager029f6b8e52c=\"3\" title=\"Como Configurar Login Autom\u00e1tico no phpMyAdmin via DirectAdmin\">configurar<\/a> o arquivo <code>robots.txt<\/code> ou, de forma mais eficiente, usar o arquivo <code>.htaccess<\/code> para bloquear esses agentes. No DirectAdmin, se voc\u00ea estiver usando OpenLiteSpeed ou Nginx, o bloqueio por User-Agent \u00e9 extremamente leve para o processador.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8. Configura\u00e7\u00e3o do Firewall CSF (ConfigServer Security &amp; Firewall)<\/h3>\n\n\n\n<p>O CSF \u00e9 o firewall padr\u00e3o de fato para quem usa DirectAdmin. Se mal configurado, ele mesmo pode consumir recursos, mas se bem ajustado, ele \u00e9 a ferramenta principal para <strong>reduzir uso de CPU no DirectAdmin<\/strong> ao impedir ataques de nega\u00e7\u00e3o de servi\u00e7o (DoS).<\/p>\n\n\n\n<p><strong>Dicas de ajuste no CSF para economizar CPU:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Connection Tracking (CT_LIMIT):<\/strong> Limite o n\u00famero de conex\u00f5es simult\u00e2neas por IP. Se um IP abrir 100 conex\u00f5es de uma vez, ele \u00e9 bloqueado. Isso evita que o Apache ou PHP-FPM tentem processar centenas de requisi\u00e7\u00f5es maliciosas.<\/li>\n\n\n\n<li><strong>PT_USERPROC_KILL:<\/strong> Ative esta op\u00e7\u00e3o para matar automaticamente processos de usu\u00e1rios que ultrapassem um tempo de execu\u00e7\u00e3o (ex: 300 segundos). Processos &#8220;zumbis&#8221; s\u00e3o vil\u00f5es silenciosos da CPU.<\/li>\n\n\n\n<li><strong>LF_DAEMON:<\/strong> Monitore falhas de login em servi\u00e7os como SSH e FTP para banir IPs atacantes antes que eles esgotem os ciclos de processamento tentando adivinhar senhas.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">9. ModSecurity e Regras de Otimiza\u00e7\u00e3o<\/h3>\n\n\n\n<p>O ModSecurity \u00e9 um Firewall de Aplica\u00e7\u00e3o Web (WAF). Embora ele use CPU para analisar o tr\u00e1fego, ele economiza muito mais ao bloquear requisi\u00e7\u00f5es complexas de ataques conhecidos que fariam o seu banco de dados trabalhar exaustivamente.<\/p>\n\n\n\n<p>Para <strong>reduzir uso de CPU no DirectAdmin<\/strong> com ModSecurity, utilize o conjunto de regras da <strong>Comodo<\/strong> ou <strong>OWASP<\/strong>, dispon\u00edveis via CustomBuild:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#2e3440ff\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>cd \/usr\/local\/directadmin\/custombuild\n.\/build set modsecurity yes\n.\/build set modsecurity_ruleset comodo\n.\/build modsecurity<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D8DEE9\">cd<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">usr<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">local<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">directadmin<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">custombuild<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">set<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">modsecurity<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">yes<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">set<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">modsecurity_ruleset<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">comodo<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">build<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">modsecurity<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">10. Uso de Cloudflare como Escudo de CPU<\/h3>\n\n\n\n<p>Uma das formas mais r\u00e1pidas de <strong>reduzir uso de CPU no DirectAdmin<\/strong> sem tocar em uma linha de c\u00f3digo do servidor \u00e9 implementar o Cloudflare (ou outro CDN).<\/p>\n\n\n\n<p>Ao delegar o cache de arquivos est\u00e1ticos (imagens, CSS, JS) e o bloqueio de bots b\u00e1sicos para a borda da Cloudflare, o seu servidor DirectAdmin s\u00f3 recebe o tr\u00e1fego que realmente importa: as requisi\u00e7\u00f5es din\u00e2micas. Isso reduz o trabalho do Webserver e, consequentemente, baixa a temperatura do processador.<\/p>\n\n\n\n<p>Chegamos \u00e0 fase de isolamento e manuten\u00e7\u00e3o preventiva. Se voc\u00ea seguiu as partes anteriores, sua stack de software (PHP, Webserver e Banco de Dados) j\u00e1 est\u00e1 otimizada. Agora, precisamos garantir que o comportamento de um \u00fanico usu\u00e1rio ou um processo administrativo n\u00e3o comprometa todo o sistema.<\/p>\n\n\n\n<p>Reduzir o uso de CPU exige ajustes no ambiente completo. Veja como fazer isso no <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/guia-completo-directadmin-administradores\/\">DirectAdmin para administradores<\/a><\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">11. Limita\u00e7\u00e3o de Recursos com Cgroups<\/h3>\n\n\n\n<p>O DirectAdmin evoluiu muito e hoje oferece suporte nativo ao <strong>Cgroups (Control Groups)<\/strong> do <a href=\"https:\/\/helpsysadmin.com.br\/blog\/como-instalar-crowdsec\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"Como instalar Crowdsec\" target=\"_blank\" rel=\"noopener\">Linux<\/a>. Esta \u00e9 uma ferramenta essencial para quem deseja <strong>reduzir uso de CPU no DirectAdmin<\/strong> em servidores que hospedam m\u00faltiplos clientes.<\/p>\n\n\n\n<p>Sem o Cgroups, se um site sofrer um ataque ou tiver um script em loop infinito, ele consumir\u00e1 100% da CPU, deixando todos os outros sites do servidor lentos.<\/p>\n\n\n\n<p><strong>Como configurar limites de CPU:<\/strong><\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Verifique se o seu Kernel suporta Cgroups.<\/li>\n\n\n\n<li>No DirectAdmin, acesse o n\u00edvel Admin.<\/li>\n\n\n\n<li>V\u00e1 em <strong>Server Manager &gt; Service Monitor<\/strong>.<\/li>\n\n\n\n<li>Configure os limites de CPU por usu\u00e1rio (por exemplo, limitando cada usu\u00e1rio a no m\u00e1ximo 1 core ou 50% de um core).<\/li>\n<\/ol>\n\n\n\n<p>Isso garante que, mesmo sob estresse, o sistema operacional sempre ter\u00e1 ciclos de CPU dispon\u00edveis para processos cr\u00edticos e para o seu acesso via SSH.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">12. Otimiza\u00e7\u00e3o de Backups: O Vil\u00e3o da Madrugada<\/h3>\n\n\n\n<p>Muitos administradores notam que o servidor fica inacess\u00edvel ou extremamente lento em hor\u00e1rios espec\u00edficos da madrugada. Isso geralmente ocorre devido \u00e0 rotina de backups do DirectAdmin.<\/p>\n\n\n\n<p>O processo de compacta\u00e7\u00e3o (gzip\/zstd) \u00e9 intensivo em processamento. Para <strong>reduzir uso de CPU no DirectAdmin<\/strong> durante os backups, siga estas estrat\u00e9gias:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Use o <code>ionice<\/code> e <code>nice<\/code>:<\/strong> Voc\u00ea pode configurar o sistema para que os processos de backup rodem com prioridade baixa. Isso significa que, se houver um acesso de usu\u00e1rio no site, a CPU priorizar\u00e1 o site e n\u00e3o o backup.<\/li>\n\n\n\n<li><strong>Backup Incremental:<\/strong> Em vez de gerar um arquivo <code>.tar.gz<\/code> gigante todas as noites, use o sistema de backup incremental do DirectAdmin. Ele apenas copia os arquivos alterados, reduzindo drasticamente o esfor\u00e7o de processamento.<\/li>\n\n\n\n<li><strong>Hor\u00e1rios Escalonados:<\/strong> Se voc\u00ea tem muitos usu\u00e1rios, n\u00e3o inicie todos os backups \u00e0 meia-noite. Divida-os em grupos ao longo da madrugada.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">13. Limpeza de Logs e Auditoria de Disco<\/h3>\n\n\n\n<p>Embora pare\u00e7a um problema de armazenamento, arquivos de log gigantescos (gigabytes de tamanho) dificultam a escrita e leitura do sistema. Quando o sistema gasta muito tempo em &#8220;I\/O Wait&#8221; (espera de entrada e sa\u00edda), o sistema operacional reporta isso como um aumento na carga da CPU.<\/p>\n\n\n\n<p>Certifique-se de que o <strong>LogRotate<\/strong> est\u00e1 funcionando corretamente no seu DirectAdmin. Manter logs limpos e rotacionados \u00e9 uma forma indireta, por\u00e9m eficaz, de <strong>reduzir uso de CPU no DirectAdmin<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Conclus\u00e3o: O Caminho para um Servidor de Alta Performance<\/h3>\n\n\n\n<p>Otimizar um servidor n\u00e3o \u00e9 uma tarefa de &#8220;clique \u00fanico&#8221;. \u00c9 um processo de camadas. Ao longo deste guia, vimos que para <strong>reduzir uso de CPU no DirectAdmin<\/strong> de forma sustent\u00e1vel, voc\u00ea deve:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Diagnosticar<\/strong> com precis\u00e3o usando <code>htop<\/code> e logs de consultas lentas.<\/li>\n\n\n\n<li><strong>Modernizar<\/strong> sua stack tecnol\u00f3gica (PHP 8+, OpenLiteSpeed).<\/li>\n\n\n\n<li><strong>Implementar Cache<\/strong> agressivo com Redis e OpCache.<\/li>\n\n\n\n<li><strong>Proteger<\/strong> o servidor contra bots e ataques com CSF e Cloudflare.<\/li>\n\n\n\n<li><strong>Isolar<\/strong> os recursos para que um site n\u00e3o afete os demais.<\/li>\n<\/ol>\n\n\n\n<p>Seguindo esses passos, voc\u00ea n\u00e3o apenas economiza em custos de hardware (podendo manter mais sites em um VPS menor), mas tamb\u00e9m oferece um servi\u00e7o de hospedagem profissional e est\u00e1vel.<\/p>\n\n\n\n<p>Para evitar novos problemas de CPU, \u00e9 essencial administrar corretamente o servidor. Consulte o <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/guia-completo-directadmin-administradores\/\">guia completo do DirectAdmin<\/a><\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Checklist Final para Reduzir Uso de CPU no DirectAdmin<\/h2>\n\n\n\n<p>Para facilitar sua rotina, aqui est\u00e1 o resumo das a\u00e7\u00f5es que voc\u00ea deve revisar periodicamente:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[ ] <strong>PHP:<\/strong> Todos os sites est\u00e3o no PHP 8.1 ou superior com PHP-FPM\/LSPHP?<\/li>\n\n\n\n<li>[ ] <strong>MySQL:<\/strong> O MySQLTuner foi executado nos \u00faltimos 30 dias?<\/li>\n\n\n\n<li>[ ] <strong>Cache:<\/strong> O OpCache est\u00e1 habilitado no CustomBuild?<\/li>\n\n\n\n<li>[ ] <strong>Webserver:<\/strong> J\u00e1 considerou a migra\u00e7\u00e3o para OpenLiteSpeed?<\/li>\n\n\n\n<li>[ ] <strong>Firewall:<\/strong> O CSF est\u00e1 bloqueando bots agressivos e pa\u00edses sem interesse comercial?<\/li>\n\n\n\n<li>[ ] <strong>Backups:<\/strong> Est\u00e3o configurados para rodar em hor\u00e1rios de baixo tr\u00e1fego com prioridade <code>nice<\/code>?<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-faq\">FAQ<\/h3>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1775887833933\"><strong class=\"schema-faq-question\">O DirectAdmin consome muita CPU sozinho?<\/strong> <p class=\"schema-faq-answer\">N\u00e3o. O DirectAdmin \u00e9 muito leve. O consumo geralmente vem de scripts PHP mal otimizados, bots maliciosos ou falta de cache nos sites hospedados.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1775887851064\"><strong class=\"schema-faq-question\">Limitar a CPU de um usu\u00e1rio resolve o problema?<\/strong> <p class=\"schema-faq-answer\">Sim, ajuda a evitar que um \u00fanico site derrube todo o servidor. Isso pode ser feito via Cgroups ou utilizando o CloudLinux<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1775887897071\"><strong class=\"schema-faq-question\">Qual o melhor webserver para reduzir uso de CPU no DirectAdmin?<\/strong> <p class=\"schema-faq-answer\">O <strong>OpenLiteSpeed<\/strong> \u00e9 atualmente a melhor op\u00e7\u00e3o gratuita para reduzir o consumo de CPU, superando o Apache em performance de arquivos est\u00e1ticos e processamento PHP (LSPHP).<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1775887931358\"><strong class=\"schema-faq-question\">O OpenLiteSpeed \u00e9 compat\u00edvel com todos os sites?<\/strong> <p class=\"schema-faq-answer\">Na grande maioria, sim. Ele l\u00ea as regras do <code>.htaccess<\/code> do Apache, o que torna a migra\u00e7\u00e3o muito tranquila para sites WordPress, Magento e sistemas pr\u00f3prios em PHP.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1775887948111\"><strong class=\"schema-faq-question\">Por que o MySQL consome tanta CPU mesmo com poucos acessos?<\/strong> <p class=\"schema-faq-answer\">Isso geralmente ocorre devido a tabelas &#8220;overhead&#8221; (com excesso de dados in\u00fateis) ou falta de \u00edndices. Realizar uma &#8220;Otimiza\u00e7\u00e3o de Tabelas&#8221; via phpMyAdmin ou linha de comando pode ajudar a <strong>reduzir uso de CPU no DirectAdmin<\/strong>.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1775887974004\"><strong class=\"schema-faq-question\">Devo usar Redis ou Memcached?<\/strong> <p class=\"schema-faq-answer\">Para a maioria dos usu\u00e1rios de DirectAdmin, o <strong>Redis<\/strong> \u00e9 superior por ser mais moderno, persistente e ter melhor integra\u00e7\u00e3o com plugins de performance como o WP Rocket e LSCache<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1775888017462\"><strong class=\"schema-faq-question\">O firewall pode aumentar o uso de CPU?<\/strong> <p class=\"schema-faq-answer\">Sim, se voc\u00ea tiver listas de bloqueio (Blocklists) gigantescas com centenas de milhares de IPs, o processador ter\u00e1 que checar cada conex\u00e3o contra essa lista. Mantenha o firewall limpo e use ferramentas como <code>ipset<\/code> para melhorar a performance.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1775888034062\"><strong class=\"schema-faq-question\">Como saber se sou alvo de um ataque de bots agora?<\/strong> <p class=\"schema-faq-answer\">Use o comando no terminal: <code>netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n<\/code> Isso mostrar\u00e1 quantos acessos cada IP est\u00e1 fazendo simultaneamente no seu servidor.<\/p> <\/div> <\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-veja-mais\">Veja Mais:<\/h3>\n\n\n\n<p><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/proteger-directadmin-contra-ataques\/\">Como Proteger DirectAdmin Contra Ataques: Guia Completo de Seguran\u00e7a 2026<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/habilitar-brotli-directadmin-nginx\/\">Como habilitar a compress\u00e3o Brotli no DirectAdmin com Nginx (Guia Completo)<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/instalar-redis-directadmin-guia-completo\/\">Como Instalar e Otimizar o Redis no DirectAdmin: Guia Definitivo 2026<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/configuracoes-php-fpm-directadmin\/\">Onde ficam as configura\u00e7\u00f5es PHP-FPM no DirectAdmin? (Guia 2026)<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/como-ativar-http3-directadmin-guia-completo\/\">Como Ativar o HTTP\/3 no DirectAdmin: Guia Completo 2026<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/directadmin-lento-diagnostico-solucao\/\">DirectAdmin Lento? Guia Definitivo de Diagn\u00f3stico e Otimiza\u00e7\u00e3o [2026]<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/csf-firewall-directadmin\/\">CSF Firewall no DirectAdmin: Como Configurar<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/migracao-de-contas-directadmin-guia\/\">Migra\u00e7\u00e3o de Contas DirectAdmin: Guia Completo e Passo a Passo<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/otimizar-mariadb-directadmin\/\" target=\"_blank\" rel=\"noreferrer noopener\">Como Otimizar MariaDB no DirectAdmin (Guia Completo de Alta Performance)<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/otimizar-directadmin-alto-trafego\/\" target=\"_blank\" rel=\"noreferrer noopener\">Como Otimizar DirectAdmin para Alto Tr\u00e1fego (Guia Definitivo)<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/directadmin-vps-vs-servidor-dedicado\/\">DirectAdmin em VPS ou Servidor Dedicado: Qual a Melhor Escolha?<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/directadmin-em-cloud-vale-a-pena\/\">DirectAdmin em Cloud: Vale a Pena? 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Se voc\u00ea \u00e9 um administrador de sistemas ou um dono de [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":5663,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4193],"tags":[4211,1362,437,34,4209,2382,2310,209],"class_list":["post-5595","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paineis-de-hospedagem","tag-cpu-alta","tag-directadmin","tag-mysql","tag-openlitespeed","tag-otimizacao-de-servidor-19","tag-php-fpm","tag-sysadmin","tag-vps"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Como Reduzir Uso de CPU no DirectAdmin: Guia Completo 2026<\/title>\n<meta name=\"description\" content=\"Aprenda estrat\u00e9gias avan\u00e7adas para reduzir uso de CPU no DirectAdmin. 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