{"id":4613,"date":"2021-02-04T14:39:12","date_gmt":"2021-02-04T06:39:12","guid":{"rendered":"https:\/\/www.gbase8.cn\/?p=4613"},"modified":"2025-04-03T13:01:22","modified_gmt":"2025-04-03T05:01:22","slug":"linux%e6%93%8d%e4%bd%9c%e7%b3%bb%e7%bb%9f%e9%92%88%e5%af%b9%e5%a4%a7%e6%95%b0%e6%8d%ae%e5%ba%93%e7%9a%84%e6%80%a7%e8%83%bd%e5%8f%82%e6%95%b0%e8%b0%83%e4%bc%98%e6%b1%87%e6%80%bb","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/4613","title":{"rendered":"Linux Operating System Tuning Parameters and Service Recommendations for Large Databases"},"content":{"rendered":"<p>\u672c\u6587\u6574\u7406\u4ece\u5404\u4e2a\u6570\u636e\u5e93\u5382\u5546\u91c7\u96c6\u7684\uff0c\u5728\u5927\u6570\u636e\u5e93\u4e0b\uff0clinux\u64cd\u4f5c\u7cfb\u7edf\u5728CPU\u3001\u5185\u5b58\u3001\u5b58\u50a8\u548c\u7f51\u7edc\u7b49\u65b9\u9762\u53c2\u6570\u4f18\u5316\u7684\u65b9\u6848\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Directory Navigation<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2b27ba655b9\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a2b27ba655b9\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E5%8F%82%E8%80%83\" >\u53c2\u8003<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E5%AD%98%E5%82%A8%E3%80%81%E6%96%87%E4%BB%B6\" >\u5b58\u50a8\u3001\u6587\u4ef6<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#IO_%E8%B0%83%E5%BA%A6%E5%99%A8\" >I\/O \u8c03\u5ea6\u5668<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E5%AF%B9%E4%BA%8ENVME%E4%B8%80%E8%88%AC%E6%98%AFM2_%E6%8E%A5%E5%8F%A3_SSD%E8%AE%BE%E5%A4%87\" >\u5bf9\u4e8eNVME(\u4e00\u822c\u662fM.2 \u63a5\u53e3) SSD\u8bbe\u5907<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E6%A0%BC%E5%BC%8F%E5%8C%96%E5%8F%82%E6%95%B0%E2%80%94%E2%80%94%E5%9D%97%E5%A4%A7%E5%B0%8F\" >\u683c\u5f0f\u5316\u53c2\u6570\u2014\u2014\u5757\u5927\u5c0f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E6%8C%82%E8%BD%BD%E5%8F%82%E6%95%B0\" >\u6302\u8f7d\u53c2\u6570<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E6%9C%80%E5%A4%A7%E6%89%93%E5%BC%80%E6%96%87%E4%BB%B6%E6%95%B0\" >\u6700\u5927\u6253\u5f00\u6587\u4ef6\u6570<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E5%86%85%E5%AD%98\" >Memory<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E5%86%85%E5%AD%98%E2%80%94%E2%80%94%E9%80%8F%E6%98%8E%E5%A4%A7%E9%A1%B5\" >\u5185\u5b58\u2014\u2014\u900f\u660e\u5927\u9875<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E5%86%85%E5%AD%98%E2%80%94%E2%80%94%E8%99%9A%E6%8B%9F%E5%86%85%E5%AD%98%E5%8F%82%E6%95%B0\" >\u5185\u5b58\u2014\u2014\u865a\u62df\u5185\u5b58\u53c2\u6570<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#NUMA_%E7%BB%91%E6%A0%B8\" >NUMA \u7ed1\u6838<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#SWAP\" >SWAP<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#CPU\" >CPU<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E5%A4%84%E7%90%86%E5%99%A8%E2%80%94%E2%80%94%E5%8A%A8%E6%80%81%E8%8A%82%E8%83%BD%E6%8A%80%E6%9C%AF\" >\u5904\u7406\u5668\u2014\u2014\u52a8\u6001\u8282\u80fd\u6280\u672f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E7%BD%91%E7%BB%9C%E3%80%81%E8%BF%9E%E6%8E%A5\" >\u7f51\u7edc\u3001\u8fde\u63a5<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#sshd_%E6%9C%8D%E5%8A%A1%E7%9A%84%E8%BF%9E%E6%8E%A5%E6%95%B0%E9%99%90%E5%88%B6\" >sshd \u670d\u52a1\u7684\u8fde\u63a5\u6570\u9650\u5236<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E9%98%B2%E7%81%AB%E5%A2%99\" >\u9632\u706b\u5899<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E6%9C%8D%E5%8A%A1\" >\u670d\u52a1<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#NTP_%E6%9C%8D%E5%8A%A1\" >NTP \u670d\u52a1<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.gbase8.cn\/en\/4613\/#%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99\" >\u53c2\u8003\u8d44\u6599<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83\"><\/span>\u53c2\u8003<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.gbase8.cn\/en\/536\/\">GBase 8a\u96c6\u7fa4\u65b0\u5b89\u88c5\u786c\u4ef6\u548c\u64cd\u4f5c\u7cfb\u7edf\u5efa\u8bae<\/a><\/p>\n\n\n\n<p>\u672c\u6587\u4ee5redhat 7\u4e3a\u57fa\u7840\u4ecb\u7ecd\uff0c\u4e0d\u5efa\u8bae\u518d\u4f7f\u7528redhat 6\u7cfb\u5217\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%AD%98%E5%82%A8%E3%80%81%E6%96%87%E4%BB%B6\"><\/span>\u5b58\u50a8\u3001\u6587\u4ef6<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"io-\u8c03\u5ea6\u5668\"><span class=\"ez-toc-section\" id=\"IO_%E8%B0%83%E5%BA%A6%E5%99%A8\"><\/span>I\/O \u8c03\u5ea6\u5668<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>I\/O \u8c03\u5ea6\u7a0b\u5e8f\u786e\u5b9a I\/O \u64cd\u4f5c\u4f55\u65f6\u5728\u5b58\u50a8\u8bbe\u5907\u4e0a\u8fd0\u884c\u4ee5\u53ca\u6301\u7eed\u591a\u957f\u65f6\u95f4\u3002\u4e5f\u79f0\u4e3a I\/O \u5347\u964d\u673a\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%AF%B9%E4%BA%8ENVME%E4%B8%80%E8%88%AC%E6%98%AFM2_%E6%8E%A5%E5%8F%A3_SSD%E8%AE%BE%E5%A4%87\"><\/span>\u5bf9\u4e8eNVME(\u4e00\u822c\u662f<strong>M.2 \u63a5\u53e3<\/strong>) SSD\u8bbe\u5907<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>\u5efa\u8bae\u8bbe\u7f6e\u6210none<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo none > \/sys\/block\/${SSD_DEV_NAME}\/queue\/scheduler<\/code><\/pre>\n\n\n\n<p>\u5bf9\u4e8e\u666e\u901a SSD \u8bbe\u5907(\u4e00\u822c\u662fSATA,SAS\u63a5\u53e3)\uff0c\u5b9c\u8bbe\u7f6e\u4e3a noop\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo noop &gt; \/sys\/block\/${SSD_DEV_NAME}\/queue\/scheduler<\/code><\/pre>\n\n\n\n<p>\u5bf9\u4e8e\u666e\u901a\u673a\u68b0\u78c1\u76d8\uff0c\u5219\u5efa\u8bae\u7528deadline\u8c03\u5ea6\u7b56\u7565\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo deadline &gt; \/sys\/block\/${SSD_DEV_NAME}\/queue\/scheduler<\/code><\/pre>\n\n\n\n<p>\u5f53\u7136\u53c2\u6570\u9700\u8981\u52a0\u5165\u5f00\u542f\u81ea\u542f\u52a8\u91cc\u9762\uff0c\u6bd4\u5982\/etc\/rc.local\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u683c\u5f0f\u5316\u53c2\u6570\u5757\u5927\u5c0f\"><span class=\"ez-toc-section\" id=\"%E6%A0%BC%E5%BC%8F%E5%8C%96%E5%8F%82%E6%95%B0%E2%80%94%E2%80%94%E5%9D%97%E5%A4%A7%E5%B0%8F\"><\/span>\u683c\u5f0f\u5316\u53c2\u6570\u2014\u2014\u5757\u5927\u5c0f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5757\u662f\u6587\u4ef6\u7cfb\u7edf\u7684\u5de5\u4f5c\u5355\u5143\u3002\u5757\u5927\u5c0f\u51b3\u5b9a\u4e86\u5355\u4e2a\u5757\u4e2d\u53ef\u4ee5\u5b58\u50a8\u591a\u5c11\u6570\u636e\uff0c\u56e0\u6b64\u51b3\u5b9a\u4e86\u4e00\u6b21\u5199\u5165\u6216\u8bfb\u53d6\u7684\u6700\u5c0f\u6570\u636e\u91cf\u3002<\/p>\n\n\n\n<p>\u9ed8\u8ba4\u5757\u5927\u5c0f\u9002\u7528\u4e8e\u5927\u591a\u6570\u4f7f\u7528\u60c5\u51b5\u3002\u4f46\u662f\uff0c\u5982\u679c\u5757\u5927\u5c0f\uff08\u6216\u591a\u4e2a\u5757\u7684\u5927\u5c0f\uff09\u4e0e\u901a\u5e38\u4e00\u6b21\u8bfb\u53d6\u6216\u5199\u5165\u7684\u6570\u636e\u91cf\u76f8\u540c\u6216\u7a0d\u5927\uff0c\u5219\u6587\u4ef6\u7cfb\u7edf\u5c06\u6027\u80fd\u66f4\u597d\uff0c\u6570\u636e\u5b58\u50a8\u6548\u7387\u66f4\u9ad8\u3002\u5c0f\u6587\u4ef6\u4ecd\u5c06\u4f7f\u7528\u6574\u4e2a\u5757\u3002\u6587\u4ef6\u53ef\u4ee5\u5206\u5e03\u5728\u591a\u4e2a\u5757\u4e2d\uff0c\u4f46\u8fd9\u4f1a\u589e\u52a0\u8fd0\u884c\u65f6\u5f00\u9500\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528 mkfs \u547d\u4ee4\u683c\u5f0f\u5316\u8bbe\u5907\u65f6\uff0c\u5c06\u5757\u5927\u5c0f\u6307\u5b9a\u4e3a\u6587\u4ef6\u7cfb\u7edf\u9009\u9879\u7684\u4e00\u90e8\u5206\u3002\u6307\u5b9a\u5757\u5927\u5c0f\u7684\u53c2\u6570\u968f\u6587\u4ef6\u7cfb\u7edf\u7684\u4e0d\u540c\u800c\u4e0d\u540c\u3002\u6709\u5173\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u67e5\u8be2\u5bf9\u5e94\u6587\u4ef6\u7cfb\u7edf\u7684&nbsp;<code>mkfs<\/code>&nbsp;\u624b\u518c\u9875\uff0c\u6bd4\u5982&nbsp;<code>man mkfs.ext4<\/code>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u6302\u8f7d\u53c2\u6570\"><span class=\"ez-toc-section\" id=\"%E6%8C%82%E8%BD%BD%E5%8F%82%E6%95%B0\"><\/span><a href=\"https:\/\/docs.pingcap.com\/zh\/tidb\/stable\/tune-operating-system#%E6%8C%82%E8%BD%BD%E5%8F%82%E6%95%B0\"><\/a>\u6302\u8f7d\u53c2\u6570<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><code>noatime<\/code>&nbsp;\u8bfb\u53d6\u6587\u4ef6\u65f6\uff0c\u5c06\u7981\u7528\u5bf9\u5143\u6570\u636e\u7684\u66f4\u65b0\u3002\u5b83\u8fd8\u542f\u7528\u4e86 nodiratime \u884c\u4e3a\uff0c\u8be5\u884c\u4e3a\u4f1a\u5728\u8bfb\u53d6\u76ee\u5f55\u65f6\u7981\u7528\u5bf9\u5143\u6570\u636e\u7684\u66f4\u65b0\u3002<\/p>\n\n\n\n<p><code>nodelalloc<\/code>&nbsp;\u7981\u7528\u5ef6\u8fdf\u5206\u914d\uff0c\u5728\u6570\u636e\u4ece\u7528\u6237\u7a7a\u95f4\u590d\u5236\u5230\u9875\u7f13\u5b58\u65f6\uff0c\u5c31\u5206\u914d\u5757\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%9C%80%E5%A4%A7%E6%89%93%E5%BC%80%E6%96%87%E4%BB%B6%E6%95%B0\"><\/span>\u6700\u5927\u6253\u5f00\u6587\u4ef6\u6570<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5bf9\u4e8e\u6570\u636e\u5e93\uff0c\u5f53\u8868\u5f88\u591a\u65f6\uff0c\u7279\u522b\u662f\u5bf9\u4e8e\u5217\u5b58\u6570\u636e\u5e93\uff0c\u5176\u6253\u5f00\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26(File Descriptor)\u662f\u5f88\u591a\u7684\u3002\u5efa\u8bae\u63d0\u9ad8\u5230655360\u3002<\/p>\n\n\n\n<p>\u67e5\u770b\u548c\u8bbe\u7f6e\u65b9\u6cd5\uff0c\u8bf7\u53c2\u8003 <a href=\"https:\/\/www.gbase8.cn\/en\/3332\/\">https:\/\/www.gbase8.cn\/3332<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%86%85%E5%AD%98\"><\/span>Memory<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%86%85%E5%AD%98%E2%80%94%E2%80%94%E9%80%8F%E6%98%8E%E5%A4%A7%E9%A1%B5\"><\/span>\u5185\u5b58\u2014\u2014\u900f\u660e\u5927\u9875<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5bf9\u4e8e\u6570\u636e\u5e93\u5e94\u7528\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528 THP\uff0c\u56e0\u4e3a\u6570\u636e\u5e93\u5f80\u5f80\u5177\u6709\u7a00\u758f\u800c\u4e0d\u662f\u8fde\u7eed\u7684\u5185\u5b58\u8bbf\u95ee\u6a21\u5f0f\uff0c\u4e14\u5f53\u9ad8\u9636\u5185\u5b58\u788e\u7247\u5316\u6bd4\u8f83\u4e25\u91cd\u65f6\uff0c\u5206\u914d THP \u9875\u9762\u4f1a\u51fa\u73b0\u8f83\u5927\u7684\u5ef6\u8fdf\u3002\u82e5\u5f00\u542f\u9488\u5bf9 THP \u7684\u76f4\u63a5\u5185\u5b58\u89c4\u6574\u529f\u80fd\uff0c\u4e5f\u4f1a\u51fa\u73b0\u7cfb\u7edf CPU \u4f7f\u7528\u7387\u6fc0\u589e\u7684\u73b0\u8c61\uff0c\u56e0\u6b64\u5efa\u8bae\u5173\u95ed THP\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo never &gt; \/sys\/kernel\/mm\/transparent_hugepage\/enabled\necho never &gt; \/sys\/kernel\/mm\/transparent_hugepage\/defrag<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u5185\u5b58\u865a\u62df\u5185\u5b58\u53c2\u6570\"><span class=\"ez-toc-section\" id=\"%E5%86%85%E5%AD%98%E2%80%94%E2%80%94%E8%99%9A%E6%8B%9F%E5%86%85%E5%AD%98%E5%8F%82%E6%95%B0\"><\/span>\u5185\u5b58\u2014\u2014\u865a\u62df\u5185\u5b58\u53c2\u6570<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li><code>dirty_ratio<\/code>&nbsp;\u767e\u5206\u6bd4\u503c\u3002\u5f53\u810f\u7684 page cache \u603b\u91cf\u8fbe\u5230\u7cfb\u7edf\u5185\u5b58\u603b\u91cf\u7684\u8fd9\u4e00\u767e\u5206\u6bd4\u540e\uff0c\u7cfb\u7edf\u5c06\u5f00\u59cb\u4f7f\u7528 pdflush \u64cd\u4f5c\u5c06\u810f\u7684 page cache \u5199\u5165\u78c1\u76d8\u3002\u9ed8\u8ba4\u503c\u4e3a 20\uff05\uff0c\u901a\u5e38\u4e0d\u9700\u8c03\u6574\u3002\u5bf9\u4e8e\u9ad8\u6027\u80fd SSD\uff0c\u6bd4\u5982 NVMe \u8bbe\u5907\u6765\u8bf4\uff0c\u964d\u4f4e\u5176\u503c\u6709\u5229\u4e8e\u63d0\u9ad8\u5185\u5b58\u56de\u6536\u65f6\u7684\u6548\u7387\u3002<\/li><li><code>dirty_background_ratio<\/code>&nbsp;\u767e\u5206\u6bd4\u503c\u3002\u5f53\u810f\u7684 page cache \u603b\u91cf\u8fbe\u5230\u7cfb\u7edf\u5185\u5b58\u603b\u91cf\u7684\u8fd9\u4e00\u767e\u5206\u6bd4\u540e\uff0c\u7cfb\u7edf\u5f00\u59cb\u5728\u540e\u53f0\u5c06\u810f\u7684 page cache \u5199\u5165\u78c1\u76d8\u3002\u9ed8\u8ba4\u503c\u4e3a 10\uff05\uff0c\u901a\u5e38\u4e0d\u9700\u8c03\u6574\u3002\u5bf9\u4e8e\u9ad8\u6027\u80fd SSD\uff0c\u6bd4\u5982 NVMe \u8bbe\u5907\u6765\u8bf4\uff0c\u8bbe\u7f6e\u8f83\u4f4e\u7684\u503c\u6709\u5229\u4e8e\u63d0\u9ad8\u5185\u5b58\u56de\u6536\u65f6\u7684\u6548\u7387\u3002<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"NUMA_%E7%BB%91%E6%A0%B8\"><\/span>NUMA \u7ed1\u6838<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u4e3a\u5c3d\u53ef\u80fd\u7684\u907f\u514d\u8de8 NUMA \u8bbf\u95ee\u5185\u5b58\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u7ebf\u7a0b\u7684 CPU \u4eb2\u548c\u6027\u6765\u5b9e\u73b0 NUMA \u7ed1\u6838\u3002\u5bf9\u4e8e\u666e\u901a\u7a0b\u5e8f\uff0c\u53ef\u4f7f\u7528&nbsp;<code>numactl<\/code>&nbsp;\u547d\u4ee4\u6765\u7ed1\u5b9a\uff0c\u5177\u4f53\u7528\u6cd5\u8bf7\u67e5\u8be2&nbsp;<code>man<\/code>&nbsp;\u624b\u518c\u3002\u5bf9\u4e8e\u7f51\u5361\u4e2d\u65ad\uff0c\u8bf7\u53c2\u8003\u4e0b\u6587\u7f51\u7edc\u7ae0\u8282\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SWAP\"><\/span>SWAP<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u8c03\u8282swappiness\u5185\u6838\u53c2\u6570\u964d\u4f4e\u7cfb\u7edf\u5bf9swap\u7684\u4f7f\u7528\uff0c\u4ece\u800c\u907f\u514d\u4e0d\u5fc5\u8981\u7684swap\u5bf9\u6027\u80fd\u9020\u6210\u7684\u5f71\u54cd\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f\uff0c\u5982\u679c\u914d\u7f6e\u6587\u4ef6 \/etc\/sysctl.conf \u91cc\u5df2\u7ecf\u5b58\u5728\u8fd9\u4e2a\u53c2\u6570\uff0c\u5efa\u8bae\u76f4\u63a5\u4fee\u6539\uff0c\u7136\u540esysctl -p\u751f\u6548\u3002\u5426\u5219\u53ef\u4ee5\u8ffd\u52a0\u5230\u672b\u5c3e\u6216\u624b\u5de5\u8ffd\u52a0\u4e00\u884c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo \"vm.swappiness = 0\"&gt;&gt; \/etc\/sysctl.conf\nsysctl -p<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"CPU\"><\/span>CPU<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"\u5904\u7406\u5668\u52a8\u6001\u8282\u80fd\u6280\u672f\"><span class=\"ez-toc-section\" id=\"%E5%A4%84%E7%90%86%E5%99%A8%E2%80%94%E2%80%94%E5%8A%A8%E6%80%81%E8%8A%82%E8%83%BD%E6%8A%80%E6%9C%AF\"><\/span>\u5904\u7406\u5668\u2014\u2014\u52a8\u6001\u8282\u80fd\u6280\u672f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>cpufreq \u662f\u4e00\u4e2a\u52a8\u6001\u8c03\u6574 CPU \u9891\u7387\u7684\u6a21\u5757\uff0c\u53ef\u652f\u63018\u79cd\u6a21\u5f0f\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>ondemand\uff1a\u7cfb\u7edf\u9ed8\u8ba4\u7684\u8d85\u9891\u6a21\u5f0f\uff0c\u6309\u9700\u8c03\u8282\uff0c\u5185\u6838\u63d0\u4f9b\u7684\u529f\u80fd\uff0c\u4e0d\u662f\u5f88\u5f3a\u5927\uff0c\u4f46\u6709\u6548\u5b9e\u73b0\u4e86\u52a8\u6001\u9891\u7387\u8c03\u8282\uff0c\u5e73\u65f6\u4ee5\u4f4e\u901f\u65b9\u5f0f\u8fd0\u884c\uff0c\u5f53\u7cfb\u7edf\u8d1f\u8f7d\u63d0\u9ad8\u65f6\u5019\u81ea\u52a8\u63d0\u9ad8\u9891\u7387\u3002\u4ee5\u8fd9\u79cd\u6a21\u5f0f\u8fd0\u884c\u4e0d\u4f1a\u56e0\u4e3a\u964d\u9891\u9020\u6210\u6027\u80fd\u964d\u4f4e\uff0c\u540c\u65f6\u4e5f\u80fd\u8282\u7ea6\u7535\u80fd\u548c\u964d\u4f4e\u6e29\u5ea6\u3002\u4e00\u822c\u5b98\u65b9\u5185\u6838\u9ed8\u8ba4\u7684\u65b9\u5f0f\u90fd\u662fondemand\u3002<\/li><li>interactive\uff1a\u4ea4\u4e92\u6a21\u5f0f\uff0c\u76f4\u63a5\u4e0a\u6700\u9ad8\u9891\u7387\uff0c\u7136\u540e\u770bCPU\u8d1f\u8377\u6162\u6162\u964d\u4f4e\uff0c\u6bd4\u8f83\u8017\u7535\u3002Interactive \u662f\u4ee5 CPU \u6392\u7a0b\u6570\u91cf\u800c\u8c03\u6574\u9891\u7387\uff0c\u4ece\u800c\u5b9e\u73b0\u7701\u7535\u3002InteractiveX \u662f\u4ee5 CPU \u8d1f\u8f7d\u6765\u8c03\u6574 CPU \u9891\u7387\uff0c\u4e0d\u4f1a\u8fc7\u5ea6\u628a\u9891\u7387\u8c03\u4f4e\u3002\u6240\u4ee5\u6bd4 Interactive \u53cd\u5e94\u597d\u4e9b\uff0c\u4f46\u662f\u7701\u7535\u7684\u6548\u679c\u4e00\u822c\u3002<\/li><li>conservative\uff1a\u4fdd\u5b88\u6a21\u5f0f\uff0c\u7c7b\u4f3c\u4e8eondemand\uff0c\u4f46\u8c03\u6574\u76f8\u5bf9\u8f83\u7f13\uff0c\u60f3\u7701\u7535\u5c31\u7528\u4ed6\u5427\u3002Google\u5b98\u65b9\u5185\u6838\uff0ckang\u5185\u6838\u9ed8\u8ba4\u6a21\u5f0f\u3002<\/li><li>smartass\uff1a\u806a\u660e\u6a21\u5f0f\uff0c\u662fI\u548cC\u6a21\u5f0f\u7684\u5347\u7ea7\uff0c\u8be5\u6a21\u5f0f\u5728\u6bd4interactive \u6a21\u5f0f\u4e0d\u5dee\u7684\u54cd\u5e94\u7684\u524d\u63d0\u4e0b\u4f1a\u505a\u5230\u4e86\u66f4\u52a0\u7701\u7535\u3002<\/li><li>performance\uff1a\u6027\u80fd\u6a21\u5f0f\uff01\u53ea\u6709\u6700\u9ad8\u9891\u7387\uff0c\u4ece\u6765\u4e0d\u8003\u8651\u6d88\u8017\u7684\u7535\u91cf\uff0c\u6027\u80fd\u6ca1\u5f97\u8bf4\uff0c\u4f46\u662f\u8017\u7535\u91cf\u3002<\/li><li>powersave \u7701\u7535\u6a21\u5f0f\uff0c\u901a\u5e38\u4ee5\u6700\u4f4e\u9891\u7387\u8fd0\u884c\u3002<\/li><li>userspace\uff1a\u7528\u6237\u81ea\u5b9a\u4e49\u6a21\u5f0f\uff0c\u7cfb\u7edf\u5c06\u53d8\u9891\u7b56\u7565\u7684\u51b3\u7b56\u6743\u4ea4\u7ed9\u4e86\u7528\u6237\u6001\u5e94\u7528\u7a0b\u5e8f\uff0c\u5e76\u63d0\u4f9b\u4e86\u76f8\u5e94\u7684\u63a5\u53e3\u4f9b\u7528\u6237\u6001\u5e94\u7528\u7a0b\u5e8f\u8c03\u8282CPU \u8fd0\u884c\u9891\u7387\u4f7f\u7528\u3002\u4e5f\u5c31\u662f\u957f\u671f\u4ee5\u6765\u90fd\u5728\u7528\u7684\u90a3\u4e2a\u6a21\u5f0f\u3002\u53ef\u4ee5\u901a\u8fc7\u624b\u52a8\u7f16\u8f91\u914d\u7f6e\u6587\u4ef6\u8fdb\u884c\u914d\u7f6e<\/li><li>Hotplug\uff1a\u7c7b\u4f3c\u4e8eondemand, \u4f46\u662fcpu\u4f1a\u5728\u5173\u5c4f\u4e0b\u5c1d\u8bd5\u5173\u6389\u4e00\u4e2acpu\uff0c\u5e76\u4e14\u5e26\u6709deep sleep\uff0c\u6bd4\u8f83\u7701\u7535<\/li><\/ol>\n\n\n\n<p>\u4e3a\u4fdd\u8bc1\u670d\u52a1\u6027\u80fd\u5e94\u9009\u7528 performance \u6a21\u5f0f\uff0c\u5c06 CPU \u9891\u7387\u56fa\u5b9a\u5de5\u4f5c\u5728\u5176\u652f\u6301\u7684\u6700\u9ad8\u8fd0\u884c\u9891\u7387\u4e0a\uff0c\u4e0d\u8fdb\u884c\u52a8\u6001\u8c03\u8282\uff0c\u64cd\u4f5c\u547d\u4ee4\u4e3a&nbsp;\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cpupower frequency-set --governor performance<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%BD%91%E7%BB%9C%E3%80%81%E8%BF%9E%E6%8E%A5\"><\/span>\u7f51\u7edc\u3001\u8fde\u63a5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"sshd_%E6%9C%8D%E5%8A%A1%E7%9A%84%E8%BF%9E%E6%8E%A5%E6%95%B0%E9%99%90%E5%88%B6\"><\/span>sshd \u670d\u52a1\u7684\u8fde\u63a5\u6570\u9650\u5236<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li>\u4fee\u6539&nbsp;<code>\/etc\/ssh\/sshd_config<\/code>&nbsp;\u5c06&nbsp;<code>MaxSessions<\/code>&nbsp;\u8c03\u81f3 20\u3002<\/li><li>\u91cd\u542f sshd \u670d\u52a1\uff1aCopy<code>service sshd restart<\/code><\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E9%98%B2%E7%81%AB%E5%A2%99\"><\/span>\u9632\u706b\u5899<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5982\u679c\u660e\u786e\u77e5\u9053\u6240\u9700\u8981\u5f00\u653e\u7684\u7aef\u53e3\u548c\u534f\u8bae\u7c7b\u578b\uff0c\u5219\u53ef\u4ee5\u5355\u72ec\u8bbe\u7f6e\u9632\u706b\u5899\u7b56\u7565\uff0c\u6bd4\u5982\u767d\u540d\u5355\u4e2d\uff0c\u5426\u5219\u5efa\u8bae\u5173\u95ed\u9632\u706b\u5899\u3002<\/p>\n\n\n\n<p>\u68c0\u67e5\u9632\u706b\u5899\u72b6\u6001<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>systemctl status firewalld.service<\/code><\/pre>\n\n\n\n<p>\u5173\u95ed\u9632\u706b\u5899\u670d\u52a1<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>systemctl stop firewalld.service<\/code><\/pre>\n\n\n\n<p>\u5173\u95ed\u9632\u706b\u5899\u81ea\u52a8\u542f\u52a8\u670d\u52a1<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>systemctl disable firewalld.service<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%9C%8D%E5%8A%A1\"><\/span>\u670d\u52a1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"NTP_%E6%9C%8D%E5%8A%A1\"><\/span>NTP \u670d\u52a1<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u7cfb\u7edf\uff0c\u9700\u8981\u8282\u70b9\u95f4\u4fdd\u8bc1\u65f6\u95f4\u7684\u540c\u6b65\u3002<\/p>\n\n\n\n<p>\u68c0\u67e5\u670d\u52a1\u662f\u5426\u5b89\u88c5<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>systemctl status ntpd.service<\/code><\/pre>\n\n\n\n<p>\u68c0\u6d4b\u662f\u5426\u4e0e NTP \u670d\u52a1\u5668\u540c\u6b65\uff0c\u5982\u679c\u8f93\u51fa&nbsp;<code>synchronised to NTP server<\/code>\uff0c\u8868\u793a\u6b63\u5728\u4e0e NTP \u670d\u52a1\u5668\u6b63\u5e38\u540c\u6b65<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ntpstat<\/code><\/pre>\n\n\n\n<p>\u5b89\u88c5\u670d\u548c\u914d\u7f6e\u65f6\u949f\u540c\u6b65\u7684\u65b9\u6cd5\uff0c\u672c\u6587\u4e0d\u505a\u7d2f\u8ff0\uff0c\u8bf7\u81ea\u884c\u641c\u7d22\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99\"><\/span>\u53c2\u8003\u8d44\u6599<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/docs.pingcap.com\/zh\/tidb\/stable\/tune-operating-system\">https:\/\/docs.pingcap.com\/zh\/tidb\/stable\/tune-operating-system<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u6574\u7406\u4ece\u5404\u4e2a\u6570\u636e\u5e93\u5382\u5546\u91c7\u96c6\u7684\uff0c\u5728\u5927\u6570\u636e\u5e93\u4e0b\uff0clinux\u64cd\u4f5c\u7cfb\u7edf\u5728CPU\u3001\u5185\u5b58\u3001\u5b58\u50a8\u548c\u7f51\u7edc\u7b49\u65b9\u9762\u53c2\u6570\u4f18\u5316\u7684\u65b9\u6848\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[72],"class_list":["post-4613","post","type-post","status-publish","format-standard","hentry","category-1","tag-linux"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/4613","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/comments?post=4613"}],"version-history":[{"count":40,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/4613\/revisions"}],"predecessor-version":[{"id":13098,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/4613\/revisions\/13098"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=4613"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=4613"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=4613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}