{"id":2152,"date":"2025-12-24T14:38:58","date_gmt":"2025-12-24T17:38:58","guid":{"rendered":"https:\/\/helpsysadmin.com.br\/blog\/?p=2152"},"modified":"2026-03-02T19:19:20","modified_gmt":"2026-03-02T22:19:20","slug":"php-fpm-como-calcular-pm-max_children","status":"publish","type":"post","link":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/","title":{"rendered":"PHP-FPM: Como Calcular pm.max_children Corretamente"},"content":{"rendered":"<div id=\"helps-1278067870\" 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<h2 class=\"wp-block-heading\" id=\"h-o-que-e-pm-max-children\">O que \u00e9 <code>pm.max_children<\/code>?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c9 o <strong>n\u00famero m\u00e1ximo de processos PHP simult\u00e2neos<\/strong> que o pool pode executar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cada processo = <strong>1 requisi\u00e7\u00e3o PHP ativa<\/strong><br>Cada processo consome <strong>RAM<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Se passar do limite \u2192 <strong>502 \/ timeout<\/strong><br>\ud83d\udc49 Se exagerar \u2192 <strong>swap \/ OOM \/ servidor lento<\/strong><\/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-1-regra-principal-formula-real\">1\ufe0f\u20e3 Regra principal (f\u00f3rmula real)<\/h2>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>pm.max_children = RAM dispon\u00edvel para PHP\n                  \u00f7\n                  consumo m\u00e9dio de 1 processo PHP\n<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Simples, mas precisa medir corretamente.<\/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-2-descubra-quanta-ram-esta-disponivel-para-o-php\">2\ufe0f\u20e3 Descubra quanta RAM est\u00e1 dispon\u00edvel para o PHP<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-passo-1-ram-total\">Passo 1 \u2013 RAM total<\/h3>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>free -m\n<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Exemplo:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>Total: 12288 MB\n<\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-passo-2-reserve-ram-para-o-sistema\">Passo 2 \u2013 Reserve RAM para o sistema<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sempre reserve:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SO + servi\u00e7os: <strong>2\u20133 GB<\/strong><\/li>\n\n\n\n<li>MySQL\/MariaDB: <strong>30\u201340% da RAM<\/strong><\/li>\n\n\n\n<li>Cache (Redis, OPcache): <strong>500 MB \u2013 1 GB<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Exemplo real (12 GB RAM):<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>Total:        12288 MB\nSistema:       2048 MB\nMariaDB:       4096 MB\nCache\/Outros:   512 MB\n-------------------------\nDispon\u00edvel PHP: ~5632 MB\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-3-meca-o-consumo-real-de-um-processo-php-fpm\">3\ufe0f\u20e3 Me\u00e7a o consumo real de um processo PHP-FPM<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-metodo-correto-producao\">M\u00e9todo correto (produ\u00e7\u00e3o)<\/h3>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>ps --no-headers -o &quot;rss,cmd&quot; -C php-fpm | awk '{sum+=$1} END {print sum\/NR\/1024 &quot; MB&quot;}'\n<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Exemplo de sa\u00edda:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>42 MB\n<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udccc Em WordPress:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PHP simples: <strong>30\u201340 MB<\/strong><\/li>\n\n\n\n<li>WooCommerce: <strong>50\u201380 MB<\/strong><\/li>\n\n\n\n<li>Sites pesados: <strong>100+ MB<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-4-calcule-o-pm-max-children\">4\ufe0f\u20e3 Calcule o <code>pm.max_children<\/code><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Usando o exemplo:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>5632 MB \u00f7 42 MB \u2248 134 processos\n<\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-valor-seguro\">Valor seguro:<\/h3>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>pm.max_children = 120\n<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udccc Sempre deixe <strong>10\u201315% de margem<\/strong>.<\/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-5-escolha-o-pm-correto-isso-muda-tudo\">5\ufe0f\u20e3 Escolha o <code>pm<\/code> correto (isso muda tudo)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-ondemand-recomendado\">\ud83d\udd39 <code>ondemand<\/code> (RECOMENDADO)<\/h3>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>pm = ondemand\npm.max_children = 120\npm.process_idle_timeout = 10s\n<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714 Menos RAM<br>\u2714 Ideal para WordPress<br>\u2714 Evita processos ociosos<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-dynamic\">\ud83d\udd39 <code>dynamic<\/code><\/h3>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>pm = dynamic\npm.max_children = 120\npm.start_servers = 10\npm.min_spare_servers = 5\npm.max_spare_servers = 20\n<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f Usa mais RAM (processos sempre ativos)<\/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-6-ambientes-com-cloudlinux-lve\">6\ufe0f\u20e3 Ambientes com CloudLinux (LVE)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 <strong>O c\u00e1lculo deve ser por conta<\/strong>, n\u00e3o global.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Exemplo por usu\u00e1rio:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>RAM LVE: 1 GB<\/li>\n\n\n\n<li>Processo PHP: 40 MB<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>1024 \u00f7 40 \u2248 25\n<\/pre><\/div>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>pm.max_children = 20\n<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udccc Isso evita que um site derrube o servidor.<\/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-7-sinais-de-pm-max-children-mal-configurado\">7\ufe0f\u20e3 Sinais de <code>pm.max_children<\/code> mal configurado<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-muito-baixo\">Muito baixo<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Erros <strong>502<\/strong><\/li>\n\n\n\n<li><code>server reached pm.max_children<\/code><\/li>\n\n\n\n<li>Lentid\u00e3o sob carga<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-muito-alto\">Muito alto<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Swap ativo<\/li>\n\n\n\n<li>OOM Killer<\/li>\n\n\n\n<li>Servidor lento mesmo sem tr\u00e1fego<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-8-monitoramento-em-tempo-real\">8\ufe0f\u20e3 Monitoramento em tempo real<\/h2>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>watch -n1 &quot;ps -ylC php-fpm --sort:rss | head&quot;\n<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Ver erros:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>journalctl -u php-fpm\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-9-exemplo-final-producao-wordpress\">9\ufe0f\u20e3 Exemplo final (produ\u00e7\u00e3o WordPress)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Servidor:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>12 GB RAM<\/li>\n\n\n\n<li>MariaDB 11.x<\/li>\n\n\n\n<li>CloudLinux<\/li>\n\n\n\n<li>Nginx + Apache<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>pm = ondemand\npm.max_children = 120\npm.process_idle_timeout = 10s\npm.max_requests = 500\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-checklist-rapido\">\u2705 Checklist r\u00e1pido<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714 RAM medida corretamente<br>\u2714 Consumo real do PHP calculado<br>\u2714 Margem de seguran\u00e7a aplicada<br>\u2714 <code>pm=ondemand<\/code> usado<br>\u2714 Monitoramento ativo<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/helpsysadmin.com.br\" target=\"_blank\" rel=\"noreferrer noopener\">Clique aqui e consulte nossos planos de Gerenciamento de Servidor<\/a><\/strong><\/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-1772483587825\"><strong class=\"schema-faq-question\">O que \u00e9 o <code>pm.max_children<\/code> e por que ele \u00e9 importante?<\/strong> <p class=\"schema-faq-answer\">\u00c9 a diretiva que define o n\u00famero m\u00e1ximo de processos simult\u00e2neos que o PHP-FPM pode criar. Se o limite for muito baixo, os usu\u00e1rios enfrentar\u00e3o lentid\u00e3o ou erros 502\/504 em picos de tr\u00e1fego. Se for muito alto, o servidor pode ficar sem mem\u00f3ria RAM e travar completamente.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1772483620494\"><strong class=\"schema-faq-question\">Qual \u00e9 a f\u00f3rmula recomendada para o c\u00e1lculo?<\/strong> <p class=\"schema-faq-answer\">A f\u00f3rmula b\u00e1sica utilizada \u00e9:<br\/><strong><code>pm.max_children = (Mem\u00f3ria RAM Dispon\u00edvel para o PHP) \/ (Consumo M\u00e9dio de um Processo PHP)<\/code><\/strong><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1772483657444\"><strong class=\"schema-faq-question\">Como descubro o consumo m\u00e9dio de mem\u00f3ria de um processo PHP?<\/strong> <p class=\"schema-faq-answer\">Voc\u00ea pode usar o seguinte comando no terminal (SSH) para listar o consumo real dos processos ativos:<br\/><code>ps -ylC php-fpm --sort:rss<\/code><br\/>A coluna <strong>RSS<\/strong> mostrar\u00e1 o valor em KBs. Geralmente, para sites WordPress, esse valor varia entre <strong>40MB e 80MB<\/strong> por processo.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1772483705676\"><strong class=\"schema-faq-question\">Como calcular a &#8220;Mem\u00f3ria Dispon\u00edvel&#8221; corretamente?<\/strong> <p class=\"schema-faq-answer\">N\u00e3o use toda a RAM do servidor. Voc\u00ea deve subtrair a mem\u00f3ria usada pelo Sistema Operacional, pelo Banco de Dados (MySQL\/MariaDB) e pelo Servidor Web (Nginx\/Apache).<br\/><em>Exemplo:<\/em> Em um servidor de 8GB, se o MySQL usa 4GB e o sistema 1GB, restam 3GB para o PHP.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1772483750428\"><strong class=\"schema-faq-question\">Como saber se o meu <code>pm.max_children<\/code> est\u00e1 baixo demais?<\/strong> <p class=\"schema-faq-answer\">Voc\u00ea deve monitorar o log de erros do PHP-FPM (geralmente em <code>\/var\/log\/php-fpm.log<\/code> ou similar). Se encontrar a mensagem:<br\/><em>&#8220;server reached pm.max_children, consider raising it&#8221;<\/em><br\/>Isso indica que o servidor atingiu o limite e est\u00e1 enfileirando requisi\u00e7\u00f5es, sendo necess\u00e1rio aumentar o valor ou otimizar o consumo de mem\u00f3ria do site.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1772483767812\"><strong class=\"schema-faq-question\">Qual a diferen\u00e7a entre os modos <code>static<\/code>, <code>dynamic<\/code> e <code>ondemand<\/code>?<\/strong> <p class=\"schema-faq-answer\"><strong>static:<\/strong> Mant\u00e9m um n\u00famero fixo de processos (usa <code>max_children<\/code> o tempo todo). Ideal para servidores dedicados de alto tr\u00e1fego.<br\/><strong>dynamic:<\/strong> Cria processos conforme a demanda, respeitando um m\u00ednimo e m\u00e1ximo. \u00c9 o mais equilibrado para a maioria das VPS.<br\/><strong>ondemand:<\/strong> S\u00f3 cria processos quando chega uma requisi\u00e7\u00e3o. Excelente para economizar mem\u00f3ria em servidores com muitos sites de baixo tr\u00e1fego.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1772483806508\"><strong class=\"schema-faq-question\">Al\u00e9m do <code>max_children<\/code>, qual outro par\u00e2metro ajuda a evitar vazamento de mem\u00f3ria?<\/strong> <p class=\"schema-faq-answer\">recomenda ajustar o <strong><code>pm.max_requests<\/code><\/strong> (ex: 500 ou 1000). Isso for\u00e7a o processo PHP a reiniciar ap\u00f3s processar um certo n\u00famero de requisi\u00e7\u00f5es, limpando qualquer &#8220;lixo&#8221; acumulado na mem\u00f3ria (<em>memory leaks<\/em>).<\/p> <\/div> <\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-veja-mais\"><strong>Veja Mais:<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/otimizacao-servidor-web-linux\/\" target=\"_blank\" rel=\"noreferrer noopener\">Guia Definitivo de Otimiza\u00e7\u00e3o de Servidor Web Linux (2026)<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/nginx-vs-litespeed-qual-performa-melhor\/\" target=\"_blank\" rel=\"noreferrer noopener\">Nginx vs. LiteSpeed: Qual Performa Melhor em Produ\u00e7\u00e3o?<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/mariadb-consumindo-muita-cpu\/\" target=\"_blank\" rel=\"noreferrer noopener\">MariaDB consumindo muita CPU? Como otimizar o my.cnf<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/como-ativar-http3-quic-servidor-linux\/\" target=\"_blank\" rel=\"noreferrer noopener\">Como Ativar HTTP\/3 e QUIC no seu Servidor<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>O que \u00e9 pm.max_children? \u00c9 o n\u00famero m\u00e1ximo de processos PHP simult\u00e2neos que o pool pode executar. Cada processo = 1 requisi\u00e7\u00e3o [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":2153,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,1279],"tags":[3167],"class_list":["post-2152","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gerenciamento-servidor","category-linux","tag-php-fpm-memory"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>PHP-FPM: Como Calcular pm.max_children Corretamente - Blog HelpSysAdmin<\/title>\n<meta name=\"description\" content=\"PHP-FPM: Como Calcular pm.max_children Corretamente\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHP-FPM: Como Calcular pm.max_children Corretamente\" \/>\n<meta property=\"og:description\" content=\"PHP-FPM: Como Calcular pm.max_children Corretamente\" \/>\n<meta property=\"og:url\" content=\"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog HelpSysAdmin\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-24T17:38:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-02T22:19:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2025\/12\/php-fpm.png\" \/>\n\t<meta property=\"og:image:width\" content=\"844\" \/>\n\t<meta property=\"og:image:height\" content=\"450\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"HelpSysAdmin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@brhelpsysad\" \/>\n<meta name=\"twitter:site\" content=\"@brhelpsysad\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/\"},\"author\":{\"name\":\"HelpSysAdmin\",\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/#\\\/schema\\\/person\\\/bdbe3d7d71a0c6a3cb474c18da574efb\"},\"headline\":\"PHP-FPM: Como Calcular pm.max_children Corretamente\",\"datePublished\":\"2025-12-24T17:38:58+00:00\",\"dateModified\":\"2026-03-02T22:19:20+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/\"},\"wordCount\":659,\"publisher\":{\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\/\\/helpsysadmin.com.br\\/blog\\/wp-content\\/uploads\\/2025\\/12\\/php-fpm.png\",\"keywords\":[\"PHP-FPM memory\"],\"articleSection\":[\"Gerenciamento de Servidor\",\"Linux\"],\"inLanguage\":\"pt-BR\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/\",\"url\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/\",\"name\":\"PHP-FPM: Como Calcular pm.max_children Corretamente - 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Se o limite for muito baixo, os usu\u00e1rios enfrentar\u00e3o lentid\u00e3o ou erros 502\\\/504 em picos de tr\u00e1fego. Se for muito alto, o servidor pode ficar sem mem\u00f3ria RAM e travar completamente.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/#faq-question-1772483620494\",\"position\":2,\"url\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/#faq-question-1772483620494\",\"name\":\"Qual \u00e9 a f\u00f3rmula recomendada para o c\u00e1lculo?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A f\u00f3rmula b\u00e1sica utilizada \u00e9:<br\\\/><strong>pm.max_children = (Mem\u00f3ria RAM Dispon\u00edvel para o PHP) \\\/ (Consumo M\u00e9dio de um Processo PHP)<\\\/strong>\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/#faq-question-1772483657444\",\"position\":3,\"url\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/#faq-question-1772483657444\",\"name\":\"Como descubro o consumo m\u00e9dio de mem\u00f3ria de um processo PHP?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Voc\u00ea pode usar o seguinte comando no terminal (SSH) para listar o consumo real dos processos ativos:<br\\\/>ps -ylC php-fpm --sort:rss<br\\\/>A coluna <strong>RSS<\\\/strong> mostrar\u00e1 o valor em KBs. 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Voc\u00ea deve subtrair a mem\u00f3ria usada pelo Sistema Operacional, pelo Banco de Dados (MySQL\\\/MariaDB) e pelo Servidor Web (Nginx\\\/Apache).<br\\\/><em>Exemplo:<\\\/em> Em um servidor de 8GB, se o MySQL usa 4GB e o sistema 1GB, restam 3GB para o PHP.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/#faq-question-1772483750428\",\"position\":5,\"url\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/#faq-question-1772483750428\",\"name\":\"Como saber se o meu pm.max_children est\u00e1 baixo demais?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Voc\u00ea deve monitorar o log de erros do PHP-FPM (geralmente em \\\/var\\\/log\\\/php-fpm.log ou similar). Se encontrar a mensagem:<br\\\/><em>\\\"server reached pm.max_children, consider raising it\\\"<\\\/em><br\\\/>Isso indica que o servidor atingiu o limite e est\u00e1 enfileirando requisi\u00e7\u00f5es, sendo necess\u00e1rio aumentar o valor ou otimizar o consumo de mem\u00f3ria do site.\",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/#faq-question-1772483767812\",\"position\":6,\"url\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/php-fpm-como-calcular-pm-max_children\\\/#faq-question-1772483767812\",\"name\":\"Qual a diferen\u00e7a entre os modos static, dynamic e ondemand?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>static:<\\\/strong> Mant\u00e9m um n\u00famero fixo de processos (usa max_children o tempo todo). Ideal para servidores dedicados de alto tr\u00e1fego.<br\\\/><strong>dynamic:<\\\/strong> Cria processos conforme a demanda, respeitando um m\u00ednimo e m\u00e1ximo. \u00c9 o mais equilibrado para a maioria das VPS.<br\\\/><strong>ondemand:<\\\/strong> S\u00f3 cria processos quando chega uma requisi\u00e7\u00e3o. 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Se o limite for muito baixo, os usu\u00e1rios enfrentar\u00e3o lentid\u00e3o ou erros 502\/504 em picos de tr\u00e1fego. Se for muito alto, o servidor pode ficar sem mem\u00f3ria RAM e travar completamente.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/#faq-question-1772483620494","position":2,"url":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/#faq-question-1772483620494","name":"Qual \u00e9 a f\u00f3rmula recomendada para o c\u00e1lculo?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A f\u00f3rmula b\u00e1sica utilizada \u00e9:<br\/><strong>pm.max_children = (Mem\u00f3ria RAM Dispon\u00edvel para o PHP) \/ (Consumo M\u00e9dio de um Processo PHP)<\/strong>","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/#faq-question-1772483657444","position":3,"url":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/#faq-question-1772483657444","name":"Como descubro o consumo m\u00e9dio de mem\u00f3ria de um processo PHP?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Voc\u00ea pode usar o seguinte comando no terminal (SSH) para listar o consumo real dos processos ativos:<br\/>ps -ylC php-fpm --sort:rss<br\/>A coluna <strong>RSS<\/strong> mostrar\u00e1 o valor em KBs. Geralmente, para sites WordPress, esse valor varia entre <strong>40MB e 80MB<\/strong> por processo.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/#faq-question-1772483705676","position":4,"url":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/#faq-question-1772483705676","name":"Como calcular a \"Mem\u00f3ria Dispon\u00edvel\" corretamente?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"N\u00e3o use toda a RAM do servidor. Voc\u00ea deve subtrair a mem\u00f3ria usada pelo Sistema Operacional, pelo Banco de Dados (MySQL\/MariaDB) e pelo Servidor Web (Nginx\/Apache).<br\/><em>Exemplo:<\/em> Em um servidor de 8GB, se o MySQL usa 4GB e o sistema 1GB, restam 3GB para o PHP.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/#faq-question-1772483750428","position":5,"url":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/#faq-question-1772483750428","name":"Como saber se o meu pm.max_children est\u00e1 baixo demais?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Voc\u00ea deve monitorar o log de erros do PHP-FPM (geralmente em \/var\/log\/php-fpm.log ou similar). Se encontrar a mensagem:<br\/><em>\"server reached pm.max_children, consider raising it\"<\/em><br\/>Isso indica que o servidor atingiu o limite e est\u00e1 enfileirando requisi\u00e7\u00f5es, sendo necess\u00e1rio aumentar o valor ou otimizar o consumo de mem\u00f3ria do site.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/#faq-question-1772483767812","position":6,"url":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/#faq-question-1772483767812","name":"Qual a diferen\u00e7a entre os modos static, dynamic e ondemand?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>static:<\/strong> Mant\u00e9m um n\u00famero fixo de processos (usa max_children o tempo todo). Ideal para servidores dedicados de alto tr\u00e1fego.<br\/><strong>dynamic:<\/strong> Cria processos conforme a demanda, respeitando um m\u00ednimo e m\u00e1ximo. \u00c9 o mais equilibrado para a maioria das VPS.<br\/><strong>ondemand:<\/strong> S\u00f3 cria processos quando chega uma requisi\u00e7\u00e3o. Excelente para economizar mem\u00f3ria em servidores com muitos sites de baixo tr\u00e1fego.","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/#faq-question-1772483806508","position":7,"url":"https:\/\/helpsysadmin.com.br\/blog\/php-fpm-como-calcular-pm-max_children\/#faq-question-1772483806508","name":"Al\u00e9m do max_children, qual outro par\u00e2metro ajuda a evitar vazamento de mem\u00f3ria?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"recomenda ajustar o <strong>pm.max_requests<\/strong> (ex: 500 ou 1000). Isso for\u00e7a o processo PHP a reiniciar ap\u00f3s processar um certo n\u00famero de requisi\u00e7\u00f5es, limpando qualquer \"lixo\" acumulado na mem\u00f3ria (<em>memory leaks<\/em>).","inLanguage":"pt-BR"},"inLanguage":"pt-BR"}]}},"lang":"pt","translations":{"pt":2152},"pll_sync_post":{},"_links":{"self":[{"href":"https:\/\/helpsysadmin.com.br\/blog\/wp-json\/wp\/v2\/posts\/2152","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/helpsysadmin.com.br\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/helpsysadmin.com.br\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/helpsysadmin.com.br\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/helpsysadmin.com.br\/blog\/wp-json\/wp\/v2\/comments?post=2152"}],"version-history":[{"count":5,"href":"https:\/\/helpsysadmin.com.br\/blog\/wp-json\/wp\/v2\/posts\/2152\/revisions"}],"predecessor-version":[{"id":3899,"href":"https:\/\/helpsysadmin.com.br\/blog\/wp-json\/wp\/v2\/posts\/2152\/revisions\/3899"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/helpsysadmin.com.br\/blog\/wp-json\/wp\/v2\/media\/2153"}],"wp:attachment":[{"href":"https:\/\/helpsysadmin.com.br\/blog\/wp-json\/wp\/v2\/media?parent=2152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/helpsysadmin.com.br\/blog\/wp-json\/wp\/v2\/categories?post=2152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/helpsysadmin.com.br\/blog\/wp-json\/wp\/v2\/tags?post=2152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}