{"id":2622,"date":"2026-01-13T21:40:23","date_gmt":"2026-01-14T00:40:23","guid":{"rendered":"https:\/\/helpsysadmin.com.br\/blog\/?p=2622"},"modified":"2026-01-13T21:40:25","modified_gmt":"2026-01-14T00:40:25","slug":"tuning-mariadb-11-pouca-ram","status":"publish","type":"post","link":"https:\/\/helpsysadmin.com.br\/blog\/tuning-mariadb-11-pouca-ram\/","title":{"rendered":"Tuning do MariaDB 11.x: Como otimizar o my.cnf para servidores com pouca RAM"},"content":{"rendered":"<div id=\"helps-3718155368\" 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>O <strong>MariaDB 11.x<\/strong> traz melhorias importantes de performance, mas <strong>continua exigindo tuning manual<\/strong> em VPS pequenos. Uma configura\u00e7\u00e3o padr\u00e3o pode consumir mem\u00f3ria excessiva e causar lentid\u00e3o, swap e erros 500.<\/p>\n\n\n\n<p>Este guia mostra <strong>como <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> corretamente o MariaDB 11.x em servidores com pouca RAM<\/strong>, com foco em estabilidade, WordPress e produ\u00e7\u00e3o real.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-o-que-muda-no-mariadb-11-x-em-relacao-a-versoes-antigas\">O que muda no MariaDB 11.x em rela\u00e7\u00e3o a vers\u00f5es antigas?<\/h2>\n\n\n\n<p>O MariaDB 11.x:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Usa InnoDB (XtraDB removido)<\/li>\n\n\n\n<li>Possui melhorias no otimizador<\/li>\n\n\n\n<li>Gerencia melhor threads<\/li>\n\n\n\n<li>Ainda <strong>n\u00e3o \u00e9 otimizado automaticamente para low memory<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 Ou seja: o <code>my.cnf<\/code> continua sendo essencial.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-quanto-de-ram-o-mariadb-11-x-deve-usar\">Quanto de RAM o MariaDB 11.x deve usar?<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>RAM total<\/th><th>Uso recomendado do MariaDB<\/th><\/tr><\/thead><tbody><tr><td>1 GB<\/td><td>256 MB<\/td><\/tr><tr><td>2 GB<\/td><td>512 MB<\/td><\/tr><tr><td>4 GB<\/td><td>1 GB a 1.5 GB<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>O restante da mem\u00f3ria deve ficar livre para PHP-FPM, cache e sistema.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-configuracao-base-recomendada-mariadb-11-x\">Configura\u00e7\u00e3o base recomendada (MariaDB 11.x)<\/h2>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>[mysqld]\nuser = mysql\nbind-address = 127.0.0.1\nskip-name-resolve\n\nmax_connections = 50\nmax_user_connections = 30\n\nwait_timeout = 60\ninteractive_timeout = 60\n\ntable_open_cache = 256\ntable_definition_cache = 256\n\nthread_cache_size = 32\n<\/pre><\/div>\n\n\n\n<p>Essa base reduz overhead e evita consumo excessivo por conex\u00f5es ociosas.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-innodb-no-mariadb-11-x-configuracao-critica\"> InnoDB no MariaDB 11.x (configura\u00e7\u00e3o cr\u00edtica)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-innodb-buffer-pool-size-principal-uso-de-ram\">innodb_buffer_pool_size (principal uso de RAM)<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>RAM<\/th><th>Valor recomendado<\/th><\/tr><\/thead><tbody><tr><td>1 GB<\/td><td>128M<\/td><\/tr><tr><td>2 GB<\/td><td>256M<\/td><\/tr><tr><td>4 GB<\/td><td>512M \u2013 1G<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>innodb_buffer_pool_size = 256M\ninnodb_buffer_pool_instances = 1\n\ninnodb_log_file_size = 64M\ninnodb_log_buffer_size = 16M\n\ninnodb_flush_log_at_trx_commit = 2\ninnodb_flush_method = O_DIRECT\n<\/pre><\/div>\n\n\n\n<p>\ud83d\udccc O MariaDB 11.x lida melhor com I\/O, mas ainda precisa de limites bem definidos.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-buffers-por-conexao-low-memory-safe\">Buffers por conex\u00e3o (low memory safe)<\/h2>\n\n\n\n<p>No MariaDB 11.x, <strong>buffers continuam sendo alocados por conex\u00e3o<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>sort_buffer_size = 1M\njoin_buffer_size = 1M\nread_buffer_size = 512K\nread_rnd_buffer_size = 512K\n\ntmp_table_size = 32M\nmax_heap_table_size = 32M\n<\/pre><\/div>\n\n\n\n<p>Esses valores evitam picos de mem\u00f3ria com m\u00faltiplos acessos simult\u00e2neos.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-query-cache-no-mariadb-11-x\">Query Cache no MariaDB 11.x<\/h2>\n\n\n\n<p>\u26a0\ufe0f <strong>N\u00e3o use Query Cache<\/strong>.<\/p>\n\n\n\n<p>Mesmo estando dispon\u00edvel no MariaDB, ele:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>N\u00e3o escala bem<\/li>\n\n\n\n<li>Prejudica sites din\u00e2micos<\/li>\n\n\n\n<li>Pode causar locks<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>query_cache_type = 0\nquery_cache_size = 0\n<\/pre><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-logs-e-monitoramento\">Logs e monitoramento<\/h2>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>slow_query_log = 1\nslow_query_log_file = \/var\/log\/mysql\/slow.log\nlong_query_time = 2\n\nlog_error = \/var\/log\/mysql\/error.log\n<\/pre><\/div>\n\n\n\n<p>O slow log \u00e9 essencial para otimiza\u00e7\u00e3o sem aumentar uso de RAM.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-configuracao-completa-do-my-cnf-mariadb-11-x-vps-2-gb\">Configura\u00e7\u00e3o completa do my.cnf (MariaDB 11.x \u2013 VPS 2 GB)<\/h2>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>[mysqld]\nuser = mysql\nbind-address = 127.0.0.1\nskip-name-resolve\n\nmax_connections = 50\nmax_user_connections = 30\n\nwait_timeout = 60\ninteractive_timeout = 60\n\ntable_open_cache = 256\ntable_definition_cache = 256\nthread_cache_size = 32\n\nsort_buffer_size = 1M\njoin_buffer_size = 1M\nread_buffer_size = 512K\nread_rnd_buffer_size = 512K\ntmp_table_size = 32M\nmax_heap_table_size = 32M\n\ninnodb_buffer_pool_size = 256M\ninnodb_buffer_pool_instances = 1\ninnodb_log_file_size = 64M\ninnodb_log_buffer_size = 16M\ninnodb_flush_log_at_trx_commit = 2\ninnodb_flush_method = O_DIRECT\n\nquery_cache_type = 0\nquery_cache_size = 0\n\nslow_query_log = 1\nlong_query_time = 2\n<\/pre><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-comandos-para-validar-o-mariadb-11-x\">Comandos para validar o MariaDB 11.x<\/h2>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>mysqladmin status\n<\/pre><\/div>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>mysql -e &quot;SHOW GLOBAL STATUS LIKE 'Threads_connected';&quot;\n<\/pre><\/div>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>mysql -e &quot;SHOW ENGINE INNODB STATUS\\G&quot;\n<\/pre><\/div>\n\n\n\n<p>Esses comandos ajudam a detectar excesso de conex\u00f5es, locks e gargalos.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-erros-comuns-no-mariadb-11-x-em-vps-pequenos\">Erros comuns no MariaDB 11.x em VPS pequenos<\/h2>\n\n\n\n<p>\u274c <code>max_connections<\/code> exagerado<br>\u274c InnoDB usando mais de 50% da RAM<br>\u274c Buffers altos por conex\u00e3o<br>\u274c WordPress sem cache de p\u00e1gina<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-mariadb-11-x-wordpress-melhor-pratica\">MariaDB 11.x + WordPress: melhor pr\u00e1tica<\/h2>\n\n\n\n<p>O MariaDB <strong>n\u00e3o deve ser o \u00fanico cache<\/strong>. Combine com:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>FastCGI Cache (Nginx)<\/li>\n\n\n\n<li>LiteSpeed Cache<\/li>\n\n\n\n<li>WP Rocket \/ WP Fastest Cache<\/li>\n<\/ul>\n\n\n\n<p>Isso reduz drasticamente queries e uso de mem\u00f3ria.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusao\"> Conclus\u00e3o<\/h2>\n\n\n\n<p>O <strong>MariaDB 11.x \u00e9 r\u00e1pido e est\u00e1vel<\/strong>, mas apenas quando corretamente configurado.<br>Em servidores com pouca RAM, <strong>limites bem definidos no my.cnf fazem toda a diferen\u00e7a<\/strong>.<\/p>\n\n\n\n<p>Com essa configura\u00e7\u00e3o voc\u00ea garante:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Menos swap<\/li>\n\n\n\n<li>Menor consumo de mem\u00f3ria<\/li>\n\n\n\n<li>Mais estabilidade<\/li>\n\n\n\n<li>Melhor performance no WordPress<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>O MariaDB 11.x traz melhorias importantes de performance, mas continua exigindo tuning manual em VPS pequenos. Uma configura\u00e7\u00e3o padr\u00e3o pode consumir mem\u00f3ria [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":2623,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,1279,1921],"tags":[90,13,3,16],"class_list":["post-2622","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gerenciamento-servidor","category-linux","category-rede","tag-almalinux","tag-linux","tag-servidor-linux","tag-ubuntu"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Tuning MariaDB 11: Otimize o my.cnf em Servidores com Pouca RAM<\/title>\n<meta name=\"description\" content=\"Aprenda como otimizar o MariaDB 11.x em servidores com pouca RAM. 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