{"id":6237,"date":"2026-04-21T14:47:30","date_gmt":"2026-04-21T17:47:30","guid":{"rendered":"https:\/\/helpsysadmin.com.br\/blog\/?p=6237"},"modified":"2026-04-22T01:26:19","modified_gmt":"2026-04-22T04:26:19","slug":"testar-velocidade-disco-linux","status":"publish","type":"post","link":"https:\/\/helpsysadmin.com.br\/blog\/testar-velocidade-disco-linux\/","title":{"rendered":"Como Testar Velocidade de Disco no Linux (Guia Completo)"},"content":{"rendered":"<div id=\"helps-2082379437\" 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-introducao\">Introdu\u00e7\u00e3o<\/h2>\n\n\n\n<p>Saber como testar velocidade de disco no <a href=\"https:\/\/helpsysadmin.com.br\/blog\/como-instalar-crowdsec\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"Como instalar Crowdsec\" target=\"_blank\" rel=\"noopener\">Linux<\/a> \u00e9 essencial para qualquer administrador de sistemas, especialmente em ambientes com VPS, servidores dedicados ou cloud.<\/p>\n\n\n\n<p>Muitos problemas de lentid\u00e3o n\u00e3o est\u00e3o ligados \u00e0 CPU ou mem\u00f3ria. Na pr\u00e1tica, o gargalo costuma estar no armazenamento.<\/p>\n\n\n\n<p>Al\u00e9m disso, um erro comum \u00e9 executar testes incorretos. Como resultado, voc\u00ea acaba analisando cache em vez do disco real.<\/p>\n\n\n\n<p>Por isso, neste guia, voc\u00ea vai aprender como testar velocidade de disco no Linux corretamente, utilizando ferramentas confi\u00e1veis e boas pr\u00e1ticas.<\/p>\n\n\n\n<p>Testar a velocidade do disco \u00e9 apenas o primeiro passo para entender o desempenho do servidor. Para uma an\u00e1lise completa, veja o guia de <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/performance-de-servidores-linux\/\">performance de servidores Linux<\/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\" id=\"h-medir-desempenho-de-disco-no-linux-por-que-isso-importa\">Medir desempenho de disco no Linux: por que isso importa<\/h2>\n\n\n\n<p>Antes de executar comandos, \u00e9 importante entender o objetivo dessa an\u00e1lise.<\/p>\n\n\n\n<p>Basicamente, ao medir desempenho de disco no Linux, voc\u00ea avalia tr\u00eas fatores principais:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Taxa de transfer\u00eancia (MB\/s)<\/li>\n\n\n\n<li>IOPS (opera\u00e7\u00f5es por segundo)<\/li>\n\n\n\n<li>Lat\u00eancia (tempo de resposta)<\/li>\n<\/ul>\n\n\n\n<p>Esses indicadores impactam diretamente aplica\u00e7\u00f5es reais. Por exemplo, bancos de dados e sites WordPress dependem fortemente de I\/O.<\/p>\n\n\n\n<p>Al\u00e9m disso, decis\u00f5es erradas podem levar a upgrades desnecess\u00e1rios. Portanto, entender esses dados \u00e9 essencial.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>O teste de disco deve ser analisado junto com outras m\u00e9tricas. Veja tamb\u00e9m:<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/achar-gargalo-com-iostat\/\">como usar iostat<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/disco-lento-no-linux-como-identificar\/\">como identificar disco lento<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/latencia-de-disco-no-linux-alta\/\">como analisar lat\u00eancia de disco<\/a><\/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-testar-velocidade-de-disco-no-linux-com-dd-metodo-rapido\">Testar velocidade de disco no Linux com dd (m\u00e9todo r\u00e1pido)<\/h2>\n\n\n\n<p>Uma forma simples de validar desempenho de armazenamento \u00e9 usar o comando dd.<\/p>\n\n\n\n<p>Primeiro, execute o teste de escrita:<\/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>dd if=\/dev\/zero of=teste.img bs=1G count=1 oflag=direct<\/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\">dd<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">if=\/<\/span><span style=\"color: #D8DEE9\">dev<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">zero<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">of=<\/span><span style=\"color: #D8DEE9\">teste<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">img<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">bs<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\">1<\/span><span style=\"color: #D8DEE9\">G<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">count<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #B48EAD\">1<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">oflag<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">direct<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Em seguida, teste a leitura:<\/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>dd if=teste.img of=\/dev\/null bs=1G iflag=direct<\/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\">dd<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">if=<\/span><span style=\"color: #D8DEE9\">teste<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">img<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">of=\/<\/span><span style=\"color: #D8DEE9\">dev<\/span><span style=\"color: #81A1C1\">\/null<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">bs<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\">1<\/span><span style=\"color: #D8DEE9\">G<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">iflag<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">direct<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Esse m\u00e9todo permite testar velocidade de disco no Linux rapidamente. No entanto, ele mede apenas opera\u00e7\u00f5es sequenciais.<\/p>\n\n\n\n<p>Por outro lado, aplica\u00e7\u00f5es reais utilizam acessos aleat\u00f3rios. Portanto, esse teste serve apenas como refer\u00eancia inicial.<\/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-benchmark-de-disco-no-linux-com-fio-teste-profissional\">Benchmark de disco no Linux com fio (teste profissional)<\/h2>\n\n\n\n<p>Para obter resultados mais confi\u00e1veis, o ideal \u00e9 utilizar o fio.<\/p>\n\n\n\n<p>Primeiramente, instale a ferramenta:<\/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>apt install fio -y<\/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\">apt<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">install<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">fio<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">-<\/span><span style=\"color: #D8DEE9\">y<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Depois disso, execute um teste realista:<\/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>fio --name=rand_test \\\n--ioengine=libaio \\\n--rw=randrw \\\n--rwmixread=70 \\\n--bs=4k \\\n--numjobs=4 \\\n--size=1G \\\n--runtime=60 \\\n--group_reporting \\\n--filename=teste.img<\/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\">fio<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">name<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">rand_test<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">ioengine<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">libaio<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">rw<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">randrw<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">rwmixread<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #B48EAD\">70<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">bs<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\">4<\/span><span style=\"color: #D8DEE9\">k<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">numjobs<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #B48EAD\">4<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">size<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\">1<\/span><span style=\"color: #D8DEE9\">G<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">runtime<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #B48EAD\">60<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">group_reporting<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">filename<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">teste<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">img<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Esse teste simula carga real. Dessa forma, voc\u00ea consegue analisar desempenho de disco no Linux com muito mais precis\u00e3o.<\/p>\n\n\n\n<p>Os resultados do benchmark precisam ser analisados em conjunto com outras m\u00e9tricas. Confira como melhorar a <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/performance-de-servidores-linux\/\">performance de servidores Linux<\/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\" id=\"h-teste-de-leitura-sequencial-no-linux-throughput\">Teste de leitura sequencial no Linux (throughput)<\/h2>\n\n\n\n<p>Em alguns cen\u00e1rios, como backup, o mais importante \u00e9 a taxa de transfer\u00eancia.<\/p>\n\n\n\n<p>Nesse caso, utilize o seguinte teste:<\/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>fio --name=seq_test \\\n--ioengine=libaio \\\n--rw=read \\\n--bs=1M \\\n--numjobs=1 \\\n--size=2G \\\n--runtime=60 \\\n--group_reporting \\\n--filename=teste.img<\/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\">fio<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">name<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">seq_test<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">ioengine<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">libaio<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">rw<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">read<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">bs<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\">1<\/span><span style=\"color: #D8DEE9\">M<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">numjobs<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #B48EAD\">1<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">size<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\">2<\/span><span style=\"color: #D8DEE9\">G<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">runtime<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #B48EAD\">60<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">group_reporting<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">filename<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">teste<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">img<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Assim, voc\u00ea consegue avaliar como o disco se comporta com arquivos grandes.<\/p>\n\n\n\n<p>O teste de disco deve ser parte de uma an\u00e1lise mais ampla do sistema. Veja como melhorar a <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/performance-de-servidores-linux\/\">performance do servidor Linux<\/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\" id=\"h-teste-de-latencia-de-disco-no-linux\">Teste de lat\u00eancia de disco no Linux<\/h2>\n\n\n\n<p>Lat\u00eancia \u00e9 um dos fatores mais cr\u00edticos em servidores.<\/p>\n\n\n\n<p>Para medir isso, execute:<\/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>fio --name=latency_test \\\n--ioengine=libaio \\\n--rw=randread \\\n--bs=4k \\\n--numjobs=1 \\\n--iodepth=1 \\\n--size=1G \\\n--runtime=60 \\\n--group_reporting \\\n--filename=teste.img<\/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\">fio<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">name<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">latency_test<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">ioengine<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">libaio<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">rw<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">randread<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">bs<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\">4<\/span><span style=\"color: #D8DEE9\">k<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">numjobs<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #B48EAD\">1<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">iodepth<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #B48EAD\">1<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">size<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\">1<\/span><span style=\"color: #D8DEE9\">G<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">runtime<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #B48EAD\">60<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">group_reporting<\/span><span style=\"color: #D8DEE9FF\"> \\<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">--<\/span><span style=\"color: #D8DEE9\">filename<\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9\">teste<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9\">img<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Esse teste revela o tempo de resposta real. Ou seja, ele mostra problemas que n\u00e3o aparecem em testes simples.<\/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-ao-testar-desempenho-de-disco-no-linux\">Erros ao testar desempenho de disco no Linux<\/h2>\n\n\n\n<p>Alguns erros podem comprometer completamente os resultados.<\/p>\n\n\n\n<p>Primeiramente, limpe o cache:<\/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>sync; echo 3 > \/proc\/sys\/vm\/drop_caches<\/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\">sync<\/span><span style=\"color: #81A1C1\">;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">echo<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #B48EAD\">3<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">\/<\/span><span style=\"color: #EBCB8B\">proc<\/span><span style=\"color: #ECEFF4\">\/<\/span><span style=\"color: #81A1C1\">sys<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">vm<\/span><span style=\"color: #81A1C1\">\/<\/span><span style=\"color: #D8DEE9\">drop_caches<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Al\u00e9m disso, evite arquivos pequenos. Caso contr\u00e1rio, o sistema pode usar mem\u00f3ria RAM em vez do disco.<\/p>\n\n\n\n<p>Outro ponto importante \u00e9 evitar testes em produ\u00e7\u00e3o. Isso porque pode afetar usu\u00e1rios ativos.<\/p>\n\n\n\n<p>Por fim, n\u00e3o analise apenas MB\/s. Em vez disso, considere tamb\u00e9m IOPS e lat\u00eancia.<\/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-interpretar-resultados-de-velocidade-de-disco-no-linux\">Interpretar resultados de velocidade de disco no Linux<\/h2>\n\n\n\n<p>Depois de coletar os dados, \u00e9 fundamental interpretar corretamente.<\/p>\n\n\n\n<p>Veja valores t\u00edpicos:<\/p>\n\n\n\n<p>HDD:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>80 a 200 MB\/s<\/li>\n<\/ul>\n\n\n\n<p>SSD:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>300 a 600 MB\/s<\/li>\n<\/ul>\n\n\n\n<p>NVMe:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>acima de 1 GB\/s<\/li>\n<\/ul>\n\n\n\n<p>No entanto, n\u00fameros altos nem sempre significam bom desempenho. Isso porque lat\u00eancia e consist\u00eancia s\u00e3o mais importantes em muitos cen\u00e1rios.<\/p>\n\n\n\n<p>Nem sempre n\u00fameros altos significam bom desempenho real. Veja a estrat\u00e9gia de <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/performance-de-servidores-linux\/\">otimiza\u00e7\u00e3o de servidores Linux<\/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\" id=\"h-estrategia-para-testar-disco-no-linux-corretamente\">Estrat\u00e9gia para testar disco no Linux corretamente<\/h2>\n\n\n\n<p>Para obter dados confi\u00e1veis, execute testes em diferentes condi\u00e7\u00f5es.<\/p>\n\n\n\n<p>Primeiro, rode o teste sem carga. Em seguida, teste com uso moderado.<\/p>\n\n\n\n<p>Por fim, execute sob stress. Dessa maneira, voc\u00ea identifica gargalos reais.<\/p>\n\n\n\n<p>Essa abordagem \u00e9 especialmente \u00fatil em VPS e ambientes cloud.<\/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-sobre-testar-velocidade-de-disco-no-linux\">Conclus\u00e3o sobre testar velocidade de disco no <a href=\"https:\/\/www.linux.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">Linux<\/a><\/h2>\n\n\n\n<p>Entender como testar velocidade de disco no Linux corretamente melhora muito o diagn\u00f3stico de performance.<\/p>\n\n\n\n<p>Em resumo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>dd serve como teste inicial<\/li>\n\n\n\n<li>fio simula uso real<\/li>\n\n\n\n<li>evite interfer\u00eancia de cache<\/li>\n\n\n\n<li>analise lat\u00eancia e IOPS<\/li>\n<\/ul>\n\n\n\n<p>Assim, voc\u00ea evita conclus\u00f5es erradas e toma decis\u00f5es mais precisas.<\/p>\n\n\n\n<p>Para garantir desempenho consistente, \u00e9 essencial otimizar todo o ambiente. Consulte o guia de <strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/performance-de-servidores-linux\/\">como otimizar servidores Linux<\/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-1776792544150\"><strong class=\"schema-faq-question\">Como testar velocidade de disco no Linux rapidamente?<\/strong> <p class=\"schema-faq-answer\">Use o comando dd para um teste inicial, mas n\u00e3o considere esse resultado como definitivo.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1776792571081\"><strong class=\"schema-faq-question\">Qual a melhor ferramenta para testar disco no Linux?<\/strong> <p class=\"schema-faq-answer\">O fio \u00e9 a melhor ferramenta, pois simula cen\u00e1rios reais de uso.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1776792597914\"><strong class=\"schema-faq-question\">O que \u00e9 mais importante: MB\/s ou IOPS?<\/strong> <p class=\"schema-faq-answer\">Na maioria dos casos, IOPS e lat\u00eancia s\u00e3o mais relevantes que MB\/s.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1776792626900\"><strong class=\"schema-faq-question\">Testar disco pode impactar o servidor?<\/strong> <p class=\"schema-faq-answer\">Sim, especialmente com fio. Evite rodar em produ\u00e7\u00e3o.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1776792638448\"><strong class=\"schema-faq-question\">Qual velocidade \u00e9 considerada boa?<\/strong> <p class=\"schema-faq-answer\">Depende do tipo de disco, sendo NVMe o mais r\u00e1pido atualmente.<\/p> <\/div> <\/div>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\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\/performance-de-servidores-linux\/\" target=\"_blank\" rel=\"noreferrer noopener\">Performance de Servidores Linux: Guia Completo 2026<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/swap-alto-com-ram-livre-linux\/\" target=\"_blank\" rel=\"noreferrer noopener\">Swap Alto com RAM Livre: Por Que Isso Acontece e como Resolver<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/servidor-lento-identificar-gargalo-vps-dedicado-cloud\/\" target=\"_blank\" rel=\"noreferrer noopener\">Servidor Lento: Como Identificar o Gargalo<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/io-de-disco-servidor-linux\/\">I\/O de disco servidor Linux: Como Resolver Gargalos<br><\/a><a href=\"https:\/\/helpsysadmin.com.br\/blog\/cpu-100-linux-o-que-verificar\/\">CPU 100% no Linux: O Que Verificar Primeiro no Servidor<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/usar-vmstat-para-achar-gargalo-linux\/\">Como Usar vmstat para Achar Gargalo no Linux em Minutos<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/load-average-linux-como-interpretar\/\">Load Average no Linux: Como Interpretar Corretamente<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/achar-gargalo-com-iostat\/\">Como Achar Gargalo com Iostat: Guia Definitivo e Pr\u00e1tico<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/iowait-alto-causas-reais\/\">Iowait Alto: Causas Reais e Solu\u00e7\u00f5es<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/monitoramento-linux-vmstat-iostat-sar\/\">Guia Completo de Monitoramento Linux com vmstat, iostat e sar<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/tuning-sysctl-producao-linux\/\">Tuning de sysctl para Produ\u00e7\u00e3o: Guia Definitivo de Performance Linux<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/oom-killer-mysql-guia-sobrevivencia\/\">OOM Killer e MySQL: Como Evitar que o Linux Mate seu Banco de Dados<\/a><\/strong><br><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-saiba-mais\">Saiba Mais:<\/h3>\n\n\n\n<p><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/limits-conf-linux\/\">Como Ajustar limits.conf no Linux: Guia para Alta Performance<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/memory-leak-linux-detectar-resolver\/\">Memory Leak Linux: Como Detectar e Corrigir<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/no-space-left-on-device-com-espaco-livre\/\">No space left on device com espa\u00e7o livre? Como resolver (Guia Completo)<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/identificar-processo-consome-cpu-linux\/\">Como identificar processo que consome CPU no Linux (Guia Completo)<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/limitar-cpu-processo-linux-cgroups\/\">Como Limitar CPU por Processo no Linux com cgroups (Guia Completo)<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/upgrade-cpu-vs-otimizacao-servidor\/\">Upgrade de CPU ou Otimizar? Guia Completo<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/ram-cheia-no-linux-o-que-fazer\/\">RAM Cheia no Linux: O Guia Definitivo para Resolver Travamentos em 2026<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/buffers-e-cache-quando-sao-um-problema\/\">Buffers e Cache: Quando Deixam de Ajudar e Viram um Problema?<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/out-of-memory-causas-reais-solucoes\/\">Out of Memory (OOM): Causas Reais, Diagn\u00f3stico e Como Resolver<\/a><\/strong><br><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-saiba-mais-0\">Saiba Mais:<\/h3>\n\n\n\n<p><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/como-evitar-oom-killer-linux-producao\/\">Como evitar OOM Killer Linux em Produ\u00e7\u00e3o: Guia Definitivo 2026<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/gargalo-no-linux-cpu-vs-ram\/\">Gargalo no Linux: Como Identificar se o Problema \u00e9 CPU ou RAM?<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/disco-lento-no-linux-como-identificar\/\">Disco Lento no Linux: Guia Completo para Identificar e Resolver<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/latencia-de-disco-no-linux-alta\/\">Lat\u00eancia de Disco no Linux Alta: Causas, Diagn\u00f3stico e Solu\u00e7\u00f5es<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/limpar-cache-memoria-linux-guia-completo\/\">Como Limpar Cache de Mem\u00f3ria no Linux: O Guia Definitivo<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/performance-armazenamento-nvme-raid\/\" target=\"_blank\" rel=\"noreferrer noopener\">Performance de Armazenamento NVMe vs RAID: O Guia Definitivo 2026<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/throughput-vs-iops-linux-performance\/\" target=\"_blank\" rel=\"noreferrer noopener\">Throughput vs IOPS no Linux: Guia Definitivo de Performance [2026]<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/reduzir-escrita-disco-linux\/\" target=\"_blank\" rel=\"noreferrer noopener\">Reduzir Escrita em Disco Linux: Guia Completo para Melhorar Performance<\/a><\/strong><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introdu\u00e7\u00e3o Saber como testar velocidade de disco no Linux \u00e9 essencial para qualquer administrador de sistemas, especialmente em ambientes com VPS, servidores [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":6238,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4189],"tags":[4265,4261,4263,4267,4269,13,4259,3621,3885],"class_list":["post-6237","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-performance-e-otimizacao","tag-dd-linux","tag-disco-lento-linux","tag-fio-benchmark","tag-iops-linux","tag-latency-disk","tag-linux","tag-performance-linux-13","tag-servidor-linux-6","tag-vps-performance"],"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 Testar Velocidade de Disco no Linux (Guia Completo) - Blog HelpSysAdmin<\/title>\n<meta name=\"description\" content=\"Aprenda como testar velocidade de disco no Linux usando dd e fio. 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