{"id":3461,"date":"2026-11-01T08:00:00","date_gmt":"2026-11-01T00:00:00","guid":{"rendered":"https:\/\/www.ygcloud.com\/knowledge\/?p=3461"},"modified":"2026-10-29T11:48:15","modified_gmt":"2026-10-29T03:48:15","slug":"server-load-high-cpu-low","status":"publish","type":"post","link":"https:\/\/www.ygcloud.com\/knowledge\/3461\/","title":{"rendered":"\u8d1f\u8f7d\u9ad8\u4f46 CPU \u4e0d\u9ad8\uff1aIO wait\u3001D \u72b6\u6001\u4e0e\u8fde\u63a5\u961f\u5217"},"content":{"rendered":"<p>\u5148\u8bf4\u7ed3\u8bba\uff1aload average \u9ad8\u4f46 CPU \u4e0d\u9ad8\uff0c\u901a\u5e38\u4e0d\u662f\u201c\u7b97\u4e0d\u8fc7\u6765\u201d\uff0c\u800c\u662f\u201c\u7b49\u4e0d\u8fc7\u6765\u201d\u3002\u5e38\u89c1\u539f\u56e0\u662f\u78c1\u76d8 IO \u6162\u3001\u8fdb\u7a0b\u5361\u5728\u4e0d\u53ef\u4e2d\u65ad\u72b6\u6001\uff08D\uff09\u3001\u8fde\u63a5\u961f\u5217\u5806\u79ef\u3001\u5185\u5b58\u56de\u6536\/swap\uff0c\u6216\u8005\u9501\u7ade\u4e89\u3002\u5148\u770b wa\u3001r \u961f\u5217\u548c D \u72b6\u6001\u8fdb\u7a0b\uff0c\u518d\u51b3\u5b9a\u52a0 CPU \u8fd8\u662f\u6362\u76d8\u3002<\/p>\n<p>\u5148\u7406\u89e3 load average\uff1a\u5b83\u7edf\u8ba1\u7684\u662f\u201c\u8fd0\u884c\u4e2d + \u4e0d\u53ef\u4e2d\u65ad\u201d\u7684\u8fdb\u7a0b\u6570\uff0c\u4e0d\u76f4\u63a5\u7b49\u4e8e CPU \u4f7f\u7528\u7387\u3002\u4e00\u4e2a\u8fdb\u7a0b\u5361\u5728\u78c1\u76d8 IO \u4e0a\uff0c\u4e5f\u4f1a\u63a8\u9ad8 load\uff0c\u4f46 CPU \u53ef\u80fd\u5f88\u95f2\u3002<\/p>\n<h2 id=\"\u5148\u770b\u4e09\u4e2a\u6570\">\u5148\u770b\u4e09\u4e2a\u6570<\/h2>\n<pre><code>uptime\nvmstat 1 5\ntop<\/code><\/pre>\n<ul>\n<li><strong>r<\/strong>\uff1a\u8fd0\u884c\u961f\u5217\uff0c\u6301\u7eed\u5927\u4e8e\u6838\u6570\u8bf4\u660e CPU \u6216\u8c03\u5ea6\u6709\u538b\u529b<\/li>\n<li><strong>b<\/strong>\uff1a\u4e0d\u53ef\u4e2d\u65ad\u8fdb\u7a0b\uff0c\u901a\u5e38\u5361\u5728 IO<\/li>\n<li><strong>wa<\/strong>\uff1aIO \u7b49\u5f85\uff0c\u9ad8\u8bf4\u660e\u78c1\u76d8\/\u7f51\u7edc\u5b58\u50a8\u6162<\/li>\n<\/ul>\n<p>load \u9ad8\u3001r \u4e0d\u9ad8\u3001b \u9ad8\u3001wa \u9ad8\uff0c\u57fa\u672c\u5c31\u662f IO \u95ee\u9898\uff1bload \u9ad8\u3001r \u9ad8\u3001us\/sy \u9ad8\uff0c\u624d\u662f CPU \u95ee\u9898\u3002<\/p>\n<h2 id=\"\u627e-d-\u72b6\u6001\u8fdb\u7a0b\">\u627e D \u72b6\u6001\u8fdb\u7a0b<\/h2>\n<pre><code>ps -eo pid,stat,wchan:30,cmd | awk '$2 ~ \/D\/'\ncat \/proc\/&lt;pid&gt;\/stack 2&gt;\/dev\/null<\/code><\/pre>\n<p>D \u72b6\u6001\u8fdb\u7a0b\u4e0d\u54cd\u5e94\u4fe1\u53f7\uff0ckill -9 \u4e5f\u6ca1\u7528\uff0c\u53ea\u80fd\u7b49 IO \u5b8c\u6210\u6216\u91cd\u542f\u673a\u5668\u3002\u770b\u5b83\u5361\u5728\u54ea\u4e2a\u8bbe\u5907\u3001\u54ea\u4e2a\u6587\u4ef6\u7cfb\u7edf\uff0c\u5e38\u89c1\u662f NFS\u3001\u4e91\u76d8\u3001\u574f\u76d8\u6216\u78c1\u76d8\u961f\u5217\u6ee1\u3002<\/p>\n<figure class=\"wp-block-image size-full\"><img width=\"1280\" height=\"720\" src=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/11d63f417903644.jpg\" alt=\"\u8fdb\u7a0b\u5728 D \u72b6\u6001\u6392\u961f\u7b49\u5f85\u78c1\u76d8 IO\" class=\"wp-image-3458\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/11d63f417903644.jpg 1280w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/11d63f417903644-300x169.jpg 300w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/11d63f417903644-1024x576.jpg 1024w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/11d63f417903644-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><figcaption>D \u72b6\u6001\u8fdb\u7a0b\u4e0d\u54cd\u5e94 kill\uff0c\u5148\u67e5\u5b83\u5361\u5728\u54ea\u4e2a\u8bbe\u5907\u3002<\/figcaption><\/figure>\n<h2 id=\"\u770b\u78c1\u76d8-io\">\u770b\u78c1\u76d8 IO<\/h2>\n<pre><code>iostat -x 1 5\niotop -o\npidstat -d 1 5<\/code><\/pre>\n<p>\u91cd\u70b9\u770b <code>await<\/code>\u3001<code>%util<\/code>\u3001<code>r_await<\/code>\u3001<code>w_await<\/code>\u3002await \u9ad8\u3001util \u6ee1\uff0c\u8bf4\u660e\u76d8\u5fd9\u4e0d\u8fc7\u6765\uff1b\u5982\u679c util \u4e0d\u9ad8\u4f46 await \u9ad8\uff0c\u53ef\u80fd\u662f\u7f51\u7edc\u5b58\u50a8\u6216\u865a\u62df\u5316\u5c42\u7684\u95ee\u9898\u3002<\/p>\n<h2 id=\"\u770b\u5185\u5b58\u548c-swap\">\u770b\u5185\u5b58\u548c swap<\/h2>\n<pre><code>free -m\nvmstat 1 5\n# si\/so \u6301\u7eed\u975e 0 \u8bf4\u660e\u5728\u6362\u9875<\/code><\/pre>\n<p>\u5185\u5b58\u4e0d\u8db3\u65f6\u4f1a\u89e6\u53d1\u56de\u6536\u548c swap\uff0c\u8fdb\u7a0b\u9891\u7e41\u6362\u5165\u6362\u51fa\uff0cload \u5347\u9ad8\u4f46 CPU \u4e0d\u9ad8\u3002\u770b available\u3001si\/so\u3001OOM \u65e5\u5fd7\uff1b\u6570\u636e\u5e93\u548c Redis \u5c24\u5176\u6015 swap\u3002<\/p>\n<figure class=\"wp-block-image size-full\"><img width=\"1280\" height=\"720\" src=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/b9fb6536940e9ad.jpg\" alt=\"swap \u548c\u5185\u5b58\u56de\u6536\u62d6\u6162\u670d\u52a1\u5668\" class=\"wp-image-3460\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/b9fb6536940e9ad.jpg 1280w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/b9fb6536940e9ad-300x169.jpg 300w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/b9fb6536940e9ad-1024x576.jpg 1024w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/b9fb6536940e9ad-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><figcaption>si\/so \u6301\u7eed\u975e 0\uff0c\u8bf4\u660e\u5185\u5b58\u5728\u6362\u9875\uff0cload \u4f1a\u88ab\u63a8\u9ad8\u3002<\/figcaption><\/figure>\n<h2 id=\"\u770b\u8fde\u63a5\u961f\u5217\">\u770b\u8fde\u63a5\u961f\u5217<\/h2>\n<pre><code>ss -lnt\nss -s\nnetstat -s | grep -i -E 'listen|overflow|retrans'<\/code><\/pre>\n<p>SYN \u961f\u5217\u6216 accept \u961f\u5217\u6ee1\u4e86\uff0c\u65b0\u8fde\u63a5\u4f1a\u6392\u961f\u6216\u4e22\u5f03\uff0c\u5e94\u7528\u770b\u8d77\u6765\u201c\u5361\u201d\uff0c\u4f46 CPU \u4e0d\u9ad8\u3002\u770b <code>Send-Q<\/code>\u3001<code>Recv-Q<\/code>\u3001<code>ListenOverflows<\/code>\uff0c\u8c03 backlog \u6216\u52a0\u5e94\u7528\u5e76\u53d1\u3002<\/p>\n<figure class=\"wp-block-image size-full\"><img width=\"1280\" height=\"720\" src=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/97a1db356d7d1c4.jpg\" alt=\"\u670d\u52a1\u5668 TCP \u8fde\u63a5 backlog \u961f\u5217\u5806\u79ef\" class=\"wp-image-3459\" loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/97a1db356d7d1c4.jpg 1280w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/97a1db356d7d1c4-300x169.jpg 300w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/97a1db356d7d1c4-1024x576.jpg 1024w, https:\/\/www.ygcloud.com\/knowledge\/wp-content\/uploads\/2026\/10\/97a1db356d7d1c4-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><figcaption>accept \u961f\u5217\u6ee1\u4e86\uff0c\u5e94\u7528\u770b\u8d77\u6765\u5361\uff0c\u4f46 CPU \u4e0d\u9ad8\u3002<\/figcaption><\/figure>\n<h2 id=\"\u770b\u9501\u548c\u6570\u636e\u5e93\">\u770b\u9501\u548c\u6570\u636e\u5e93<\/h2>\n<p>\u5e94\u7528\u7ebf\u7a0b\u7b49\u9501\u3001\u6570\u636e\u5e93\u7b49\u884c\u9501\/\u8868\u9501\uff0c\u4e5f\u4f1a\u8ba9\u8bf7\u6c42\u5806\u79ef\u3002Java \u770b\u7ebf\u7a0b\u6808\uff0cPHP \u770b slow log\uff0cMySQL \u770b <code>SHOW ENGINE INNODB STATUS<\/code> \u548c <code>performance_schema<\/code>\u3002\u9501\u7b49\u5f85\u4e0d\u5360 CPU\uff0c\u4f46\u4f1a\u628a\u961f\u5217\u62c9\u957f\u3002<\/p>\n<h2 id=\"\u6392\u67e5\u987a\u5e8f\">\u6392\u67e5\u987a\u5e8f<\/h2>\n<ol>\n<li>uptime\/vmstat \u770b r\u3001b\u3001wa<\/li>\n<li>ps \u627e D \u72b6\u6001\u8fdb\u7a0b<\/li>\n<li>iostat\/iotop \u5b9a\u4f4d\u78c1\u76d8<\/li>\n<li>free \u770b\u5185\u5b58\u548c swap<\/li>\n<li>ss \u770b\u8fde\u63a5\u961f\u5217<\/li>\n<li>\u5e94\u7528\/\u6570\u636e\u5e93\u770b\u9501\u548c\u6162\u67e5\u8be2<\/li>\n<li>\u6700\u540e\u624d\u8003\u8651\u52a0 CPU<\/li>\n<\/ol>\n<h2 id=\"\u5e94\u6025\u5904\u7406\">\u5e94\u6025\u5904\u7406<\/h2>\n<ul>\n<li>\u9650\u6d41\u3001\u964d\u7ea7\u975e\u6838\u5fc3\u63a5\u53e3<\/li>\n<li>\u628a\u5907\u4efd\u3001\u538b\u7f29\u3001\u65e5\u5fd7\u5f52\u6863\u632a\u8d70<\/li>\n<li>\u91cd\u542f\u5361\u6b7b\u7684 worker\uff08\u786e\u8ba4\u4e0d\u662f\u6570\u636e\u5e93\u8fde\u63a5\uff09<\/li>\n<li>\u4e34\u65f6\u52a0\u5185\u5b58\/\u6362\u9ad8 IOPS \u76d8<\/li>\n<li>\u4fdd\u7559\u73b0\u573a\uff1avmstat\u3001iostat\u3001D \u72b6\u6001\u8fdb\u7a0b\u3001\u8fde\u63a5\u961f\u5217<\/li>\n<\/ul>\n<h2 id=\"\u600e\u4e48\u9884\u9632\">\u600e\u4e48\u9884\u9632<\/h2>\n<ul>\n<li>\u76d1\u63a7 load\u3001r\u3001b\u3001wa\u3001iowait\u3001swap\u3001\u8fde\u63a5\u961f\u5217<\/li>\n<li>\u78c1\u76d8\u7559 20% \u4f59\u91cf\uff0c\u5b9a\u671f\u6d4b IOPS<\/li>\n<li>\u6570\u636e\u5e93\u6162\u67e5\u8be2\u548c\u9501\u7b49\u5f85\u544a\u8b66<\/li>\n<li>\u5e94\u7528\u8fde\u63a5\u6c60\u548c\u8d85\u65f6\u8bbe\u7f6e\u5408\u7406<\/li>\n<li>\u5907\u4efd\/\u65e5\u5fd7\u9519\u5cf0<\/li>\n<\/ul>\n<h2 id=\"load-\u548c-cpu-\u7684\u533a\u522b\">load \u548c CPU \u7684\u533a\u522b<\/h2>\n<p>CPU \u4f7f\u7528\u7387\u662f\u201cCPU \u5fd9\u4e0d\u5fd9\u201d\uff0cload \u662f\u201c\u6709\u591a\u5c11\u4efb\u52a1\u5728\u8dd1\u6216\u5728\u7b49\u201d\u3002CPU 100% \u4f46 load \u4e0d\u9ad8\uff0c\u53ef\u80fd\u662f\u5355\u7ebf\u7a0b\u6253\u6ee1\uff1bload \u5f88\u9ad8\u4f46 CPU \u5f88\u95f2\uff0c\u901a\u5e38\u662f\u5728\u7b49 IO\u3001\u7b49\u9501\u3001\u7b49\u8fde\u63a5\u3002<\/p>\n<h2 id=\"\u5e38\u89c1\u573a\u666f\">\u5e38\u89c1\u573a\u666f<\/h2>\n<p>\u6570\u636e\u5e93\u5168\u8868\u626b\u63cf\u3001\u5907\u4efd\u538b\u7f29\u3001NFS \u5361\u987f\u3001\u4e91\u76d8\u9650\u901f\u3001\u5185\u5b58\u4e0d\u8db3\u6362\u9875\u3001\u8fde\u63a5\u6c60\u6253\u6ee1\u3001\u65e5\u5fd7\u540c\u6b65\u5237\u76d8\uff0c\u90fd\u4f1a\u8ba9 load \u5347\u9ad8\u4f46 CPU \u4e0d\u9ad8\u3002\u5148\u5bf9\u7167\u6700\u8fd1\u53d8\u66f4\u548c\u4efb\u52a1\u6392\u671f\u3002<\/p>\n<h2 id=\"\u6392\u67e5\u5de5\u5177\">\u6392\u67e5\u5de5\u5177<\/h2>\n<p>vmstat \u770b r\/b\/wa\uff0ciostat \u770b await\/util\uff0ciotop \u770b\u8fdb\u7a0b\uff0css \u770b\u961f\u5217\uff0cpidstat \u770b CPU\/IO\uff0cdmesg \u770b OOM \u548c\u78c1\u76d8\u9519\u8bef\u3002\u5de5\u5177\u4e0d\u5728\u591a\uff0c\u5173\u952e\u662f\u5bf9\u7167\u65f6\u95f4\u70b9\u3002<\/p>\n<h2 id=\"\u4ec0\u4e48\u65f6\u5019\u52a0\u673a\u5668\">\u4ec0\u4e48\u65f6\u5019\u52a0\u673a\u5668<\/h2>\n<p>\u53ea\u6709 CPU \u771f\u7684\u6210\u4e3a\u74f6\u9888\uff08r \u9ad8\u3001us\/sy \u9ad8\uff09\u624d\u52a0 CPU\uff1bIO \u95ee\u9898\u6362\u9ad8 IOPS \u76d8\uff0c\u5185\u5b58\u95ee\u9898\u52a0\u5185\u5b58\uff0c\u8fde\u63a5\u95ee\u9898\u8c03\u5e94\u7528\u548c backlog\u3002\u52a0\u9519\u65b9\u5411\uff0c\u94b1\u82b1\u4e86\u95ee\u9898\u8fd8\u5728\u3002<\/p>\n<h2 id=\"\u7f51\u7edc\u5b58\u50a8\u548c-nfs\">\u7f51\u7edc\u5b58\u50a8\u548c NFS<\/h2>\n<p>NFS\u3001CIFS \u7b49\u7f51\u7edc\u5b58\u50a8\u5728\u6296\u52a8\u65f6\u4f1a\u8ba9\u8fdb\u7a0b\u5361\u5728 D \u72b6\u6001\uff0cload \u98d9\u5347\u4f46 CPU \u5f88\u95f2\u3002\u68c0\u67e5\u6302\u8f7d\u53c2\u6570\u3001\u7f51\u7edc\u5ef6\u8fdf\u548c\u670d\u52a1\u7aef\u8d1f\u8f7d\uff0c\u5fc5\u8981\u65f6\u6539\u672c\u5730\u76d8\u3002<\/p>\n<h2 id=\"\u4e91\u76d8\u7a81\u53d1\u989d\u5ea6\">\u4e91\u76d8\u7a81\u53d1\u989d\u5ea6<\/h2>\n<p>\u90e8\u5206\u4e91\u76d8\u6709\u7a81\u53d1 IOPS\uff0c\u989d\u5ea6\u7528\u5b8c\u5c31\u6389\u901f\uff0c\u8868\u73b0\u4e3a\u767d\u5929\u6b63\u5e38\u3001\u665a\u4e0a\u5361\u3002\u770b\u4e91\u76d1\u63a7\u7684 IOPS \u548c\u541e\u5410\u66f2\u7ebf\uff0c\u786e\u8ba4\u662f\u5426\u89e6\u53d1\u9650\u901f\u3002<\/p>\n<p>\u6700\u540e\uff0cload \u8981\u770b\u8d8b\u52bf\u548c\u6301\u7eed\u65f6\u95f4\uff1a\u5076\u5c14\u51b2\u9ad8\u4e0d\u7528\u614c\uff0c\u6301\u7eed\u9ad8\u4f4d\u4e14\u4e1a\u52a1\u53d7\u5f71\u54cd\u624d\u9700\u8981\u5904\u7406\u3002\u628a 1\/5\/15 \u5206\u949f\u66f2\u7ebf\u548c\u4e1a\u52a1\u6307\u6807\u653e\u4e00\u8d77\u770b\uff0c\u907f\u514d\u8bef\u5224\u3002<\/p>\n<p>\u6bcf\u6b21\u6392\u67e5\u8bb0\u5f55\u65f6\u95f4\u3001\u73b0\u8c61\u3001\u547d\u4ee4\u8f93\u51fa\u548c\u5904\u7406\u7ed3\u679c\uff0c\u4e0b\u6b21\u9047\u5230\u7c7b\u4f3c\u95ee\u9898\u80fd\u76f4\u63a5\u5bf9\u7167\uff0c\u4e0d\u7528\u4ece\u96f6\u5f00\u59cb\u3002<\/p>\n<p>\u6392\u67e5\u987a\u5e8f\u6bd4\u5de5\u5177\u66f4\u91cd\u8981\uff0c\u5148\u5b9a\u4f4d\u65b9\u5411\u518d\u6df1\u5165\u3002<\/p>\n<p>\u65b9\u5411\u5bf9\u4e86\uff0c\u5de5\u5177\u624d\u6709\u610f\u4e49\uff0c\u8fd9\u4e00\u70b9\u771f\u7684\u5f88\u91cd\u8981\u554a\u54c8\u3002<\/p>\n<h2 id=\"\u5e38\u89c1\u95ee\u9898-faq\">\u5e38\u89c1\u95ee\u9898 FAQ<\/h2>\n<p><strong>Q1\uff1aload \u9ad8\u5c31\u662f CPU \u4e0d\u591f\u5417\uff1f<\/strong><\/p>\n<p>\u4e0d\u662f\u3002load \u5305\u542b\u4e0d\u53ef\u4e2d\u65ad\u8fdb\u7a0b\uff0cIO \u7b49\u5f85\u3001swap\u3001\u8fde\u63a5\u961f\u5217\u90fd\u4f1a\u63a8\u9ad8 load\uff0c\u4f46 CPU \u53ef\u80fd\u5f88\u95f2\u3002<\/p>\n<p><strong>Q2\uff1aD \u72b6\u6001\u8fdb\u7a0b\u80fd kill \u5417\uff1f<\/strong><\/p>\n<p>\u666e\u901a kill \u548c kill -9 \u901a\u5e38\u65e0\u6548\uff0c\u53ea\u80fd\u7b49 IO \u5b8c\u6210\u3001\u4fee\u590d\u5b58\u50a8\u6216\u91cd\u542f\u3002\u5148\u67e5\u5b83\u5361\u5728\u54ea\u4e2a\u8bbe\u5907\u3002<\/p>\n<p><strong>Q3\uff1awa \u9ad8\u4f46 util \u4e0d\u9ad8\uff0c\u600e\u4e48\u56de\u4e8b\uff1f<\/strong><\/p>\n<p>\u53ef\u80fd\u662f\u7f51\u7edc\u5b58\u50a8\u3001\u865a\u62df\u5316\u5c42\u6216\u4e91\u76d8\u9650\u901f\u3002\u770b\u4e91\u76d1\u63a7\u7684 IOPS\/\u541e\u5410\u66f2\u7ebf\uff0c\u548c\u5bbf\u4e3b\u673a iostat \u5bf9\u7167\u3002<\/p>\n<p><strong>Q4\uff1a\u8fde\u63a5\u961f\u5217\u6ee1\u4e86\u600e\u4e48\u529e\uff1f<\/strong><\/p>\n<p>\u8c03\u5927 backlog\u3001\u52a0\u5e94\u7528 worker\u3001\u4f18\u5316\u6162\u8bf7\u6c42\uff1b\u540c\u65f6\u770b\u662f\u5426\u6709\u653b\u51fb\u6216\u722c\u866b\u5360\u7740\u8fde\u63a5\u3002<\/p>\n<p><strong>Q5\uff1a\u52a0 CPU \u80fd\u89e3\u51b3\u5417\uff1f<\/strong><\/p>\n<p>\u53ea\u6709 r \u9ad8\u3001us\/sy \u9ad8\u65f6\u624d\u6709\u6548\u3002IO\u3001\u5185\u5b58\u3001\u9501\u5bfc\u81f4\u7684 load \u9ad8\uff0c\u52a0 CPU \u6ca1\u7528\u3002<\/p>\n<h2 id=\"\u603b\u7ed3\">\u603b\u7ed3<\/h2>\n<p>load \u9ad8 CPU \u4e0d\u9ad8\uff0c\u5148\u770b r\/b\/wa\uff0c\u518d\u627e D \u72b6\u6001\u8fdb\u7a0b\u3001\u78c1\u76d8\u3001\u5185\u5b58\u3001\u8fde\u63a5\u961f\u5217\u548c\u9501\u3002\u5927\u591a\u6570\u60c5\u51b5\u662f\u201c\u7b49 IO\/\u7b49\u9501\/\u7b49\u8fde\u63a5\u201d\uff0c\u4e0d\u662f\u7b97\u529b\u4e0d\u591f\u3002\u6309\u987a\u5e8f\u6392\u67e5\uff0c\u522b\u76f2\u76ee\u5347\u914d\u3002<\/p>\n<p>\u9700\u8981\u4e00\u53f0 IO \u66f4\u7a33\u7684\u673a\u5668\u505a\u5bf9\u7167\uff0c\u53ef\u4ee5\u6309\u5c0f\u65f6\u5f00\u4e00\u53f0<a href=\"https:\/\/www.ygcloud.com\/vps\/hong-kong-cn2-vps\">\u8424\u5149\u4e91\u9999\u6e2f CN2 VPS<\/a>\uff0c\u7528 fio \u548c iostat \u5148\u6d4b\u4e00\u8f6e\u3002<\/p>\n<h2 id=\"\u76f8\u5173\u63a8\u8350\">\u76f8\u5173\u63a8\u8350<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/3341\/\">\u4e91\u670d\u52a1\u5668 CPU 100% \u600e\u4e48\u6392\u67e5\uff1f\u4ece top \u5230\u6162\u67e5\u8be2\u7684\u987a\u5e8f<\/a><\/li>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/3377\/\">\u4e91\u670d\u52a1\u5668\u78c1\u76d8 IO \u9ad8\u600e\u4e48\u6392\u67e5\uff1fiostat\u3001\u6162\u67e5\u8be2\u4e0e\u4e91\u76d8\u9650\u901f<\/a><\/li>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/3231\/\">\u7f51\u7ad9 502 \u9519\u8bef\u600e\u4e48\u6392\u67e5\uff1fNginx\u3001PHP-FPM \u4e0e\u540e\u7aef\u8d85\u65f6<\/a><\/li>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/3249\/\">VPS \u8d85\u552e\u662f\u4ec0\u4e48\uff1f\u600e\u4e48\u5224\u65ad\u4fbf\u5b9c VPS \u6709\u6ca1\u6709\u8d85\u552e<\/a><\/li>\n<li><a href=\"https:\/\/www.ygcloud.com\/knowledge\/1380\/\">\u7ad9\u70b9\u76d1\u63a7\u600e\u4e48\u505a\uff1fHTTP\u3001\u5e94\u7528\u3001\u4e3b\u673a\u4e0e\u5907\u4efd\u76d1\u63a7<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5148\u8bf4\u7ed3\u8bba\uff1aload average \u9ad8\u4f46 CPU \u4e0d\u9ad8\uff0c\u901a\u5e38\u4e0d\u662f\u201c\u7b97\u4e0d\u8fc7\u6765\u201d\uff0c\u800c\u662f\u201c\u7b49\u4e0d\u8fc7\u6765\u201d\u3002\u5e38\u89c1\u539f\u56e0\u662f\u78c1\u76d8 IO \u6162\u3001\u8fdb\u7a0b\u5361\u5728\u4e0d\u53ef\u4e2d\u65ad\u72b6\u6001\uff08D\uff09\u3001\u8fde\u63a5\u961f\u5217\u5806\u79ef\u3001\u5185\u5b58\u56de\u6536\/swap\uff0c\u6216\u8005\u9501\u7ade\u4e89\u3002\u5148\u770b wa\u3001r \u961f\u5217\u548c D \u72b6\u6001\u8fdb\u7a0b\uff0c\u518d\u51b3\u5b9a&#8230;<\/p>\n","protected":false},"author":1,"featured_media":3457,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[43,46],"topic":[],"class_list":["post-3461","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-100","tag-vps"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u8d1f\u8f7d\u9ad8\u4f46 CPU \u4e0d\u9ad8\uff1aIO wait\u3001D \u72b6\u6001\u4e0e\u8fde\u63a5\u961f\u5217<\/title>\n<meta name=\"description\" content=\"\u670d\u52a1\u5668\u8d1f\u8f7d\u9ad8\u4f46 CPU \u4e0d\u9ad8\u600e\u4e48\u6392\u67e5\uff1f\u4ece load average\u3001D \u72b6\u6001\u8fdb\u7a0b\u3001\u78c1\u76d8 IO\u3001swap \u5230\u8fde\u63a5\u961f\u5217\u548c\u9501\uff0c\u7ed9\u51fa\u5b8c\u6574\u6392\u67e5\u987a\u5e8f\u3002\" \/>\n<meta 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