{"id":33713,"date":"2026-10-19T14:00:00","date_gmt":"2026-10-19T06:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=33713"},"modified":"2026-10-20T21:29:27","modified_gmt":"2026-10-20T13:29:27","slug":"cpu-load-troubleshooting-top-pidstat","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/cpu-load-troubleshooting-top-pidstat\/","title":{"rendered":"\u670d\u52a1\u5668 CPU \u8d1f\u8f7d\u8fc7\u9ad8\u6392\u67e5\uff1atop \u4e0e pidstat \u5b9a\u4f4d\u8fdb\u7a0b\u7ea7\u95ee\u9898"},"content":{"rendered":"<p>\u7f51\u7ad9\u7a81\u7136\u53d8\u6162\u3001SSH \u767b\u5f55\u5361\u987f\u3001\u9762\u677f\u544a\u8b66\u8bf4\u8d1f\u8f7d\u98d9\u5347\u2014\u2014\u9047\u5230\u670d\u52a1\u5668 CPU \u8d1f\u8f7d\u8fc7\u9ad8\uff0c\u5f88\u591a\u4eba\u7684\u7b2c\u4e00\u53cd\u5e94\u662f\u91cd\u542f\uff0c\u4f46\u91cd\u542f\u53ea\u80fd\u6682\u65f6\u63a9\u76d6\u95ee\u9898\u3002\u672c\u6587\u6559\u4f60\u4e00\u5957\u4e0d\u6253\u65ad\u4e1a\u52a1\u7684\u6392\u67e5\u8def\u5f84\uff1a\u5148\u7528 top \u5224\u65ad\u8d1f\u8f7d\u6c34\u4f4d\u548c\u74f6\u9888\u65b9\u5411\uff0c\u518d\u7528 pidstat \u6df1\u6316\u5230\u8fdb\u7a0b\u4e0e\u7ebf\u7a0b\u7ea7\u522b\uff0c\u6700\u540e\u628a\u7ed3\u8bba\u843d\u5230\u53ef\u6267\u884c\u7684\u4f18\u5316\u52a8\u4f5c\u4e0a\uff0c\u5e2e\u52a9\u4f60\u628a&#8221;\u8d1f\u8f7d\u9ad8&#8221;\u4e09\u4e2a\u5b57\u53d8\u6210\u5177\u4f53\u5230 PID \u7684\u6574\u6539\u6e05\u5355\u3002<\/p>\n<h2>\u5148\u770b\u61c2\u8d1f\u8f7d\uff1aload average \u4e0d\u7b49\u4e8e CPU \u4f7f\u7528\u7387<\/h2>\n<p>\u767b\u5f55\u670d\u52a1\u5668\u540e\u6267\u884c <code>uptime<\/code> \u6216 <code>top<\/code>\uff0c\u4f1a\u770b\u5230\u4e09\u4e2a\u6570\u5b57\uff0c\u6bd4\u5982 <code>load average: 8.42, 6.10, 3.75<\/code>\uff0c\u5206\u522b\u4ee3\u8868\u6700\u8fd1 1 \u5206\u949f\u30015 \u5206\u949f\u548c 15 \u5206\u949f\u7684\u5e73\u5747\u8d1f\u8f7d\u3002\u5b83\u7edf\u8ba1\u7684\u662f&#8221;\u6b63\u5728\u8fd0\u884c + \u7b49\u5f85\u8fd0\u884c + \u7b49\u5f85\u78c1\u76d8 I\/O \u7684\u4efb\u52a1\u6570&#8221;\uff0c\u800c CPU \u4f7f\u7528\u7387\u53ea\u53cd\u6620 CPU \u65f6\u95f4\u7684\u5360\u7528\u6bd4\u4f8b\uff0c\u4e24\u8005\u542b\u4e49\u4e0d\u540c\u3002<\/p>\n<p>\u5224\u65ad\u8d1f\u8f7d\u662f\u5426\u771f\u7684\u8fc7\u9ad8\uff0c\u8981\u9664\u4ee5\u6838\u5fc3\u6570\u3002\u5047\u8bbe\u8fd9\u662f\u4e00\u53f0 4 \u6838\u7684 <a href=\"https:\/\/cn.hostease.com\/vps\/\">VPS<\/a>\uff08<a href=\"https:\/\/cn.hostease.com\/vps\/\">\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668<\/a>\uff09\uff0c\u8d1f\u8f7d 4 \u5de6\u53f3\u8bf4\u660e\u521a\u597d\u6253\u6ee1\uff1b\u8d1f\u8f7d 8 \u8bf4\u660e\u6709\u4e00\u534a\u4efb\u52a1\u5728\u6392\u961f\uff1b\u5982\u679c 15 \u5206\u949f\u5747\u503c\u6301\u7eed\u9ad8\u4e8e\u6838\u5fc3\u6570\uff0c\u800c 1 \u5206\u949f\u5747\u503c\u8fd8\u5728\u4e0a\u5347\uff0c\u8bf4\u660e\u95ee\u9898\u6b63\u5728\u6076\u5316\u3002\u53cd\u8fc7\u6765\uff0c1 \u5206\u949f\u51b2\u9ad8\u4f46 15 \u5206\u949f\u5747\u503c\u5e73\u7a33\uff0c\u901a\u5e38\u662f\u67d0\u4e2a\u77ac\u65f6\u4efb\u52a1\uff08\u6bd4\u5982\u5907\u4efd\u3001\u538b\u7f29\uff09\u5f15\u8d77\u7684\uff0c\u5148\u89c2\u5bdf\u518d\u52a8\u624b\u3002<\/p>\n<p>\u8fd8\u6709\u4e00\u4e2a\u5bb9\u6613\u5ffd\u7565\u7684\u4fe1\u53f7\uff1a\u8d1f\u8f7d\u9ad8\u4f46 CPU \u4f7f\u7528\u7387\u4e0d\u9ad8\u3002\u8fd9\u591a\u534a\u610f\u5473\u7740\u4efb\u52a1\u5361\u5728\u78c1\u76d8 I\/O \u4e0a\uff0c\u4e5f\u5c31\u662f\u5e38\u8bf4\u7684 iowait \u504f\u9ad8\u3002\u8fd9\u65f6\u770b CPU \u4f7f\u7528\u7387\u6392\u6700\u5f3a\u8fdb\u7a0b\u5f80\u5f80\u627e\u4e0d\u5230\u5143\u51f6\uff0c\u9700\u8981\u6362\u5de5\u5177\u4ece\u53e6\u4e00\u4e2a\u89d2\u5ea6\u770b\u3002\u5173\u4e8e\u57fa\u7840\u6307\u6807\u600e\u4e48\u91c7\u96c6\u3001\u4ec0\u4e48\u65f6\u5019\u8be5\u4e0a\u76d1\u63a7\uff0c\u53ef\u4ee5\u53c2\u8003\u8fd9\u7bc7 Linux \u670d\u52a1\u5668\u76d1\u63a7\u6392\u969c\uff1a<a href=\"https:\/\/cn.hostease.com\/blog\/tutorials\/linux-server-metrics-troubleshooting\/\">\u7528 Prometheus \u5b9a\u4f4d CPU \u4e0e\u78c1\u76d8\u95ee\u9898<\/a>\uff0c\u628a\u5355\u6b21\u6392\u67e5\u53d8\u6210\u6301\u7eed\u7684\u6307\u6807\u89c2\u6d4b\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/cpu-load-top-overview.webp\" alt=\"\u8d1f\u8f7d\u6c34\u4f4d\u4e0e\u5bb9\u91cf\u5bf9\u6bd4\uff1a\u8d85\u51fa\u5bb9\u91cf\u7ebf\u7684\u6a59\u8272\u67f1\u4ee3\u8868\u6392\u961f\u4efb\u52a1\" loading=\"lazy\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/cpu-load-troubleshooting-cover.webp\" alt=\"\u670d\u52a1\u5668 CPU \u8d1f\u8f7d\u8fc7\u9ad8\u6392\u67e5\u5c01\u9762\u56fe\uff1a\u653e\u5927\u955c\u805a\u7126\u673a\u67dc\u4e2d\u4e00\u53f0\u9ad8\u8d1f\u8f7d\u670d\u52a1\u5668\u5355\u5143\" loading=\"lazy\" \/><\/p>\n<h2>\u7b2c\u4e00\u6b65\uff1a\u7528 top \u5224\u65ad\u74f6\u9888\u65b9\u5411<\/h2>\n<p><code>top<\/code> \u662f\u6392\u67e5\u7684\u7b2c\u4e00\u7ad9\uff0c\u91cd\u70b9\u4e0d\u662f\u76ef\u7740 %CPU \u6392\u884c\uff0c\u800c\u662f\u770b\u5c4f\u5e55\u9876\u90e8\u7684\u51e0\u884c\u6c47\u603b\uff1a<\/p>\n<ul>\n<li><code>us<\/code>\uff08\u7528\u6237\u6001\uff09\uff1a\u5e94\u7528\u4ee3\u7801\u672c\u8eab\u5728\u6d88\u8017 CPU\uff0c\u6bd4\u5982 PHP \u811a\u672c\u6b7b\u5faa\u73af\u3001\u56fe\u7247\u5904\u7406\u4efb\u52a1\u5806\u79ef<\/li>\n<li><code>sy<\/code>\uff08\u5185\u6838\u6001\uff09\uff1a\u7cfb\u7edf\u8c03\u7528\u9891\u7e41\uff0c\u5e38\u89c1\u4e8e\u8fdb\u7a0b\u9891\u7e41\u521b\u5efa\u9500\u6bc1\u3001\u4e0a\u4e0b\u6587\u5207\u6362\u8fc7\u591a<\/li>\n<li><code>wa<\/code>\uff08iowait\uff09\uff1aCPU \u5728\u7b49\u78c1\u76d8\uff0c\u5b58\u50a8\u662f\u74f6\u9888\u800c\u4e0d\u662f\u7b97\u529b<\/li>\n<li><code>load average<\/code> \u4e0e <code>Tasks<\/code> \u884c\uff1a\u770b\u8fd0\u884c\u961f\u5217\u957f\u5ea6\u548c\u8fdb\u7a0b\u603b\u6570\u662f\u5426\u5f02\u5e38<\/li>\n<\/ul>\n<p>\u6309 <code>1<\/code> \u53ef\u4ee5\u5c55\u5f00\u6bcf\u4e2a\u6838\u5fc3\u7684\u5360\u7528\uff0c\u5224\u65ad\u8d1f\u8f7d\u662f\u96c6\u4e2d\u5728\u5355\u6838\uff08\u5355\u7ebf\u7a0b\u74f6\u9888\uff09\u8fd8\u662f\u5747\u5300\u5206\u5e03\u5728\u6240\u6709\u6838\u5fc3\uff08\u5e76\u53d1\u538b\u529b\uff09\u3002\u6309 <code>P<\/code> \u6309CPU \u6392\u5e8f\u3001\u6309 <code>M<\/code> \u6309\u5185\u5b58\u6392\u5e8f\uff0c\u5148\u8bb0\u4e0b\u6700\u524d\u9762\u7684\u51e0\u4e2a PID\u3002\u5982\u679c <code>%CPU<\/code> \u5217\u603b\u548c\u8fdc\u4f4e\u4e8e\u8d1f\u8f7d\u503c\uff0c\u5927\u6982\u7387\u662f iowait \u6216\u4e0d\u53ef\u4e2d\u65ad\u8fdb\u7a0b\uff08\u72b6\u6001\u5217\u4e3a <code>D<\/code>\uff09\u5728\u62d6\u9ad8\u8d1f\u8f7d\u3002<\/p>\n<p>\u8fd9\u91cc\u6709\u4e00\u4e2a\u771f\u5b9e\u6848\u4f8b\uff1a\u67d0 WordPress \u7ad9\u70b9\u8d1f\u8f7d\u6301\u7eed 12\uff0ctop \u91cc us \u53ea\u6709 30%\uff0cwa \u5374\u5230\u4e86 45%\u3002\u6700\u540e\u5b9a\u4f4d\u5230\u662f\u6570\u636e\u5e93\u8868\u635f\u574f\u5bfc\u81f4\u67e5\u8be2\u75af\u72c2\u8bfb\u76d8\uff0c\u6362\u5230\u66f4\u5feb\u7684\u5b58\u50a8\u5e76\u4fee\u590d\u8868\u4e4b\u540e\u8d1f\u8f7d\u7acb\u523b\u56de\u843d\u3002\u8fd9\u7c7b&#8221;\u8d1f\u8f7d\u9ad8\u4f46 CPU \u4e0d\u5fd9&#8221;\u7684\u573a\u666f\uff0c\u4e0b\u4e00\u6b65\u5c31\u8be5\u7528 pidstat \u4ece\u8fdb\u7a0b\u7ef4\u5ea6\u7ee7\u7eed\u62c6\u3002<\/p>\n<h2>\u7b2c\u4e8c\u6b65\uff1a\u7528 pidstat \u5b9a\u4f4d\u5230\u5177\u4f53\u8fdb\u7a0b<\/h2>\n<p>sysstat \u5305\u91cc\u7684 <code>pidstat<\/code> \u662f top \u4e4b\u540e\u7684\u81ea\u7136\u5ef6\u4f38\uff1atop \u544a\u8bc9\u4f60&#8221;\u7cfb\u7edf\u6574\u4f53\u5728\u5fd9&#8221;\uff0cpidstat \u544a\u8bc9\u4f60&#8221;\u662f\u54ea\u4e2a\u8fdb\u7a0b\u3001\u5fd9\u5728\u54ea\u79cd\u8d44\u6e90\u4e0a&#8221;\u3002\u591a\u6570\u53d1\u884c\u7248\u901a\u8fc7 <code>yum install sysstat<\/code> \u6216 <code>apt install sysstat<\/code> \u5b89\u88c5\u3002\u4e09\u4e2a\u6700\u5e38\u7528\u7684\u6a21\u5f0f\uff1a<\/p>\n<pre><code class=\"language-bash\"># \u6bcf 2 \u79d2\u91c7\u6837\u4e00\u6b21\uff0c\u8f93\u51fa CPU \u7ef4\u5ea6\u7684\u8fdb\u7a0b\u6392\u884c\uff0c\u5171\u91c7 5 \u6b21\npidstat -u 2 5\n\n# \u8f93\u51fa\u5185\u5b58\u7ef4\u5ea6\uff0c\u91cd\u70b9\u770b RSS \u5e38\u9a7b\u5185\u5b58\u548c %MEM\npidstat -r 2 5\n\n# \u8f93\u51fa\u78c1\u76d8 I\/O \u7ef4\u5ea6\uff0ciowait \u9ad8\u65f6\u7528\u5b83\u627e\u8bfb\u5199\u6700\u9891\u7e41\u7684\u8fdb\u7a0b\npidstat -d 2 5\n<\/code><\/pre>\n<p><code>pidstat -u<\/code> \u7684\u8f93\u51fa\u91cc\uff0c<code>%usr<\/code> \u662f\u7528\u6237\u6001\u6d88\u8017\u3001<code>%system<\/code> \u662f\u5185\u6838\u6001\u6d88\u8017\u3001<code>%CPU<\/code> \u662f\u5408\u8ba1\u3002\u7ed3\u5408 top \u7684\u65b9\u5411\u6765\u8bfb\uff1a\u5982\u679c top \u663e\u793a us \u9ad8\uff0c\u5c31\u5728 <code>-u<\/code> \u8f93\u51fa\u91cc\u627e <code>%usr<\/code> \u9760\u524d\u7684\u8fdb\u7a0b\uff1b\u5982\u679c wa \u9ad8\uff0c\u5c31\u5207\u5230 <code>-d<\/code> \u770b <code>kB_rd\/s<\/code>\u3001<code>kB_wr\/s<\/code> \u8c01\u5728\u75af\u72c2\u8bfb\u5199\u3002\u627e\u5230\u76ee\u6807 PID \u540e\uff0c\u7528 <code>pidstat -t -p &lt;PID&gt; 2 5<\/code> \u4e0b\u94bb\u5230\u7ebf\u7a0b\u7ea7\uff0c\u591a\u7ebf\u7a0b\u5e94\u7528\uff08\u5982\u6570\u636e\u5e93\u3001Java \u670d\u52a1\uff09\u7ecf\u5e38\u662f\u67d0\u4e00\u4e2a\u7ebf\u7a0b\u5728\u62d6\u7d2f\u6574\u4e2a\u8fdb\u7a0b\u3002<\/p>\n<p>\u4e00\u4e2a\u5b9e\u7528\u6280\u5de7\u662f\u628a\u8f93\u51fa\u843d\u76d8\u4fbf\u4e8e\u4e8b\u540e\u5206\u6790\uff1a<code>pidstat -urd 2 3600 &gt; \/tmp\/pidstat.log &amp;<\/code>\u3002\u8d1f\u8f7d\u662f\u6ce2\u52a8\u7684\uff0c\u4f60\u5728 SSH \u91cc\u76ef\u5341\u5206\u949f\u672a\u5fc5\u80fd\u6293\u5230\u5cf0\u503c\uff0c\u8ba9\u5b83\u5728\u540e\u53f0\u91c7\u6837\u4e00\u5c0f\u65f6\uff0c\u518d\u7528 <code>grep<\/code> \u6309\u65f6\u95f4\u70b9\u56de\u6eaf\uff0c\u6bd4\u73b0\u573a\u8e72\u5b88\u9ad8\u6548\u5f97\u591a\u3002\u5982\u679c\u5b9a\u4f4d\u7ed3\u679c\u663e\u793a\u5185\u5b58\u5403\u7d27\u3001swap \u9891\u7e41\uff0c\u6392\u67e5\u601d\u8def\u8981\u5207\u6362\u5230\u5185\u5b58\u4fa7\uff0c\u53ef\u4ee5\u7ee7\u7eed\u9605\u8bfb <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/linux-swap-server-practical\/\">Linux swap \u4ea4\u6362\u5206\u533a\u8c03\u4f18\uff1a\u670d\u52a1\u5668\u5185\u5b58\u538b\u529b\u7ba1\u7406\u5b9e\u6218<\/a>\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/cpu-load-pidstat-drilldown.webp\" alt=\"\u4ece\u7cfb\u7edf\u5230\u8fdb\u7a0b\u7684\u5b9a\u4f4d\u6f0f\u6597\uff1a\u4f17\u591a\u8fdb\u7a0b\u6536\u7a84\u5230\u5355\u4e2a\u9ad8\u5360\u7528\u8fdb\u7a0b\" loading=\"lazy\" \/><\/p>\n<h2>\u7b2c\u4e09\u6b65\uff1a\u533a\u5206\u4e09\u7c7b\u9ad8\u8d1f\u8f7d\uff0c\u5bf9\u75c7\u5904\u7406<\/h2>\n<p>\u6392\u67e5\u5230\u8fdb\u7a0b\u7ea7\u4e4b\u540e\uff0c\u5904\u7406\u65b9\u5f0f\u53d6\u51b3\u4e8e\u8d1f\u8f7d\u5c5e\u4e8e\u54ea\u4e00\u7c7b\u3002\u51ed\u7ecf\u9a8c\uff0c\u4e09\u7c7b\u95ee\u9898\u7684\u5904\u65b9\u5b8c\u5168\u4e0d\u540c\uff0c\u7528\u9519\u65b9\u5411\u53ea\u4f1a\u6d6a\u8d39\u65f6\u95f4\uff1a<\/p>\n<p><strong>\u7528\u6237\u6001\u9ad8\u8d1f\u8f7d\uff08us \u9ad8\uff09<\/strong>\uff1a\u5e38\u89c1\u4e8e\u4e1a\u52a1\u4ee3\u7801\u95ee\u9898\u3002PHP \u7f51\u7ad9\u8981\u68c0\u67e5\u6b7b\u5faa\u73af\u3001\u6b63\u5219\u56de\u6eaf\u7206\u70b8\u3001\u56fe\u7247\u7f29\u653e\u4efb\u52a1\u5806\u79ef\uff1b\u91c7\u96c6\u7c7b\u811a\u672c\u5219\u68c0\u67e5\u722c\u53d6\u9891\u7387\u3002\u7528 <code>pidstat -t -p &lt;PID&gt;<\/code> \u627e\u5230\u6700\u5fd9\u7684\u7ebf\u7a0b\u540e\uff0c<code>strace -p &lt;TID&gt;<\/code> \u80fd\u770b\u5230\u5b83\u5361\u5728\u54ea\u4e2a\u7cfb\u7edf\u8c03\u7528\u4e0a\u3002\u4e34\u65f6\u7f13\u89e3\u5148\u9650\u6d41\u6216\u964d\u7ea7\uff0c\u6839\u6cbb\u8981\u9760\u6539\u4ee3\u7801\u3002<\/p>\n<p><strong>\u5185\u6838\u6001\u9ad8\u8d1f\u8f7d\uff08sy \u9ad8\uff09<\/strong>\uff1a\u901a\u5e38\u662f\u8fdb\u7a0b\u8c03\u5ea6\u538b\u529b\u3002\u5178\u578b\u573a\u666f\u662f\u77ed\u547d\u8fdb\u7a0b\u98ce\u66b4\u2014\u2014PHP-FPM\uff08PHP \u5feb\u901f\u8fdb\u7a0b\u7ba1\u7406\u5668\uff09\u7684 max_requests \u8bbe\u5f97\u592a\u5c0f\uff0c\u8fdb\u7a0b\u88ab\u9891\u7e41\u9500\u6bc1\u91cd\u5efa\uff1b\u6216\u8005 cron \u4efb\u52a1\u914d\u7f6e\u8fc7\u5bc6\u3002\u7528 <code>vmstat 1<\/code> \u770b <code>cs<\/code> \u5217\uff08\u4e0a\u4e0b\u6587\u5207\u6362\u6b21\u6570\uff09\uff0c\u6bcf\u79d2\u8d85\u8fc7\u51e0\u5341\u4e07\u8bf4\u660e\u8c03\u5ea6\u538b\u529b\u8fc7\u5927\uff0c\u5e94\u8c03\u5927\u8fdb\u7a0b\u590d\u7528\u53c2\u6570\u800c\u4e0d\u662f\u52a0\u673a\u5668\u3002<\/p>\n<p><strong>I\/O \u7b49\u5f85\u9ad8\u8d1f\u8f7d\uff08wa \u9ad8\uff09<\/strong>\uff1a\u74f6\u9888\u5728\u78c1\u76d8\u3002\u5148\u770b <code>pidstat -d<\/code> \u91cc\u8c01\u5728\u8bfb\u5199\uff0c\u518d\u786e\u8ba4\u662f\u968f\u673a\u5c0f I\/O \u8fd8\u662f\u987a\u5e8f\u5927 I\/O\u3002\u6570\u636e\u5e93\u670d\u52a1\u5668\u5c24\u5176\u6015\u968f\u673a\u5c0f I\/O\uff0c\u5e38\u89c1\u89e3\u6cd5\u662f\u52a0\u5185\u5b58\u6269\u5927\u7f13\u5b58\u3001\u628a\u65e5\u5fd7\u548c\u6570\u636e\u653e\u5230\u4e0d\u540c\u76d8\u3001\u6216\u76f4\u63a5\u6362 NVMe \u5b58\u50a8\u3002\u5982\u679c\u8bfb\u5199\u91cf\u672c\u8eab\u4e0d\u5927\u4f46 wa \u4ecd\u9ad8\uff0c\u8981\u68c0\u67e5\u78c1\u76d8\u5065\u5eb7\u72b6\u6001\uff0c\u574f\u9053\u548c RAID \u964d\u7ea7\u90fd\u4f1a\u5bfc\u81f4\u6027\u80fd\u65ad\u5d16\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/cpu-load-iowait-bottleneck.webp\" alt=\"IOWait \u5b58\u50a8\u74f6\u9888\u793a\u610f\uff1a\u5904\u7406\u5668\u7b49\u5f85\u6162\u901f\u78c1\u76d8\u8fd4\u56de\u6570\u636e\" loading=\"lazy\" \/><\/p>\n<h2>\u7ebf\u7a0b\u7ea7\u6df1\u6316\u4e0e\u771f\u5b9e\u6848\u4f8b<\/h2>\n<p>\u6709\u4e2a\u6848\u4f8b\u5f88\u5178\u578b\uff1a\u4e00\u53f0\u8dd1\u7740\u591a\u4e2a\u7ad9\u70b9\u7684\u670d\u52a1\u5668\uff0c\u8d1f\u8f7d\u957f\u671f\u5728\u6838\u5fc3\u6570\u7684\u4e24\u500d\u5de6\u53f3\uff0ctop \u91cc us \u9ad8\u8fbe 70%\uff0c\u4f46\u6240\u6709 PHP-FPM \u8fdb\u7a0b\u7684 %CPU \u90fd\u5f88\u5e73\u5747\uff0c\u770b\u4e0d\u51fa\u8c01\u662f\u5143\u51f6\u3002\u6362\u7528 <code>pidstat -t -u -p all 2 5<\/code> \u8f93\u51fa\u7ebf\u7a0b\u7ea7\u6570\u636e\u540e\uff0c\u95ee\u9898\u7acb\u523b\u73b0\u5f62\u2014\u2014\u5176\u4e2d\u4e00\u4e2a\u7ad9\u70b9\u7684\u67d0\u4e2a\u63d2\u4ef6\u5728\u6bcf\u6b21\u8bf7\u6c42\u91cc\u90fd\u505a\u5168\u8868\u626b\u63cf\u5f0f\u7684\u6570\u7ec4\u6392\u5e8f\uff0c\u5b83\u5bf9\u5e94\u7684\u5de5\u4f5c\u7ebf\u7a0b %CPU \u5e38\u5e74 95% \u4ee5\u4e0a\u3002\u505c\u7528\u63d2\u4ef6\u540e\u8d1f\u8f7d\u4ece 16 \u964d\u5230 3\u3002<\/p>\n<p>\u8fd9\u4e2a\u6848\u4f8b\u8bf4\u660e\u7ebf\u7a0b\u7ea7\u89c6\u89d2\u7684\u4ef7\u503c\uff1a\u8fdb\u7a0b\u7ea7\u5e73\u5747\u6570\u4f1a\u63a9\u76d6\u5355\u7ebf\u7a0b\u70ed\u70b9\u3002\u6392\u67e5\u6570\u636e\u5e93\u3001\u6d88\u606f\u961f\u5217\u3001Java \u5e94\u7528\u8fd9\u7c7b\u591a\u7ebf\u7a0b\u670d\u52a1\u65f6\uff0c<code>pidstat -t<\/code> \u5e94\u8be5\u662f\u9ed8\u8ba4\u52a8\u4f5c\uff0c\u800c\u4e0d\u662f\u5907\u9009\u9879\u3002<\/p>\n<p>\u5982\u679c\u6392\u67e5\u7684\u7ed3\u8bba\u662f&#8221;\u4e1a\u52a1\u786e\u5b9e\u589e\u957f\u3001\u8d44\u6e90\u786e\u5b9e\u4e0d\u591f&#8221;\uff0c\u90a3\u5c31\u8be5\u8003\u8651\u6269\u5bb9\u800c\u4e0d\u662f\u7ee7\u7eed\u4f18\u5316\u4ee3\u7801\u3002\u5224\u65ad\u6807\u51c6\u5f88\u7b80\u5355\uff1apidstat \u663e\u793a busiest \u8fdb\u7a0b\u7684 %CPU \u957f\u671f\u8d34\u8fd1 100% \u4e14\u4ee3\u7801\u6ca1\u6709\u660e\u663e\u4f18\u5316\u7a7a\u95f4\u3001wa \u4e0d\u9ad8\u3001\u6269\u5bb9\u540e\u8d1f\u8f7d\u80fd\u7ebf\u6027\u56de\u843d\uff0c\u5c31\u8bf4\u660e\u662f\u771f\u5b9e\u7684\u7b97\u529b\u7f3a\u53e3\u3002\u8fd9\u65f6\u53ef\u4ee5\u8bc4\u4f30\u5347\u7ea7\u73b0\u6709 VPS \u914d\u7f6e\uff0c\u6216\u8005\u53c2\u8003\u8fd9\u7bc7 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/netdata-realtime-monitoring-deployment\/\">Netdata \u5b9e\u65f6\u76d1\u63a7\u90e8\u7f72\uff1a\u670d\u52a1\u5668\u6027\u80fd\u74f6\u9888\u79d2\u7ea7\u5b9a\u4f4d<\/a>\uff0c\u5148\u628a\u74f6\u9888\u770b\u6e05\u695a\uff0c\u518d\u51b3\u5b9a\u662f\u4f18\u5316\u4ee3\u7801\u8fd8\u662f\u628a\u91cd\u8d1f\u8f7d\u4e1a\u52a1\u8fc1\u5230\u72ec\u7acb\u8d44\u6e90\u66f4\u591a\u3001I\/O \u66f4\u5f3a\u7684\u65b9\u6848\u4e0a\u3002<\/p>\n<h2>\u6392\u67e5\u8282\u594f\u5efa\u8bae\uff1a\u4ece 5 \u5206\u949f\u68c0\u67e5\u5230\u6301\u7eed\u89c2\u6d4b<\/h2>\n<p>\u8d1f\u8f7d\u544a\u8b66\u89e6\u53d1\u65f6\uff0c\u5efa\u8bae\u6309\u56fa\u5b9a\u7684\u8282\u594f\u8d70\uff0c\u907f\u514d\u4e1c\u67e5\u4e00\u4e0b\u897f\u770b\u4e00\u4e0b\uff1a<\/p>\n<ol>\n<li>\u524d 1 \u5206\u949f\uff1a<code>uptime<\/code> \u770b\u8d8b\u52bf\uff0c<code>top<\/code> \u6309 <code>1<\/code> \u548c <code>P<\/code> \u786e\u8ba4\u74f6\u9888\u65b9\u5411\uff0c\u8bb0\u5f55 us\/sy\/wa \u4e09\u4e2a\u6570<\/li>\n<li>\u7b2c 2-3 \u5206\u949f\uff1a\u6309\u65b9\u5411\u9009 pidstat \u6a21\u5f0f\uff08<code>-u<\/code>\u3001<code>-d<\/code> \u6216 <code>-r<\/code>\uff09\uff0c\u9501\u5b9a\u76ee\u6807 PID\uff0c\u5fc5\u8981\u65f6 <code>-t<\/code> \u4e0b\u94bb\u7ebf\u7a0b<\/li>\n<li>\u7b2c 4-5 \u5206\u949f\uff1a<code>strace<\/code> \u6216\u67e5\u5e94\u7528\u65e5\u5fd7\u786e\u8ba4\u6839\u56e0\uff0c\u51b3\u5b9a\u662f\u9650\u6d41\u3001\u6539\u914d\u7f6e\u8fd8\u662f\u6269\u5bb9<\/li>\n<li>\u5904\u7406\u540e 30 \u5206\u949f\uff1a\u518d\u770b\u4e00\u6b21 15 \u5206\u949f load average \u662f\u5426\u56de\u843d\u5230\u6838\u5fc3\u6570\u4ee5\u5185<\/li>\n<\/ol>\n<p>\u5bf9\u4e8e\u7ecf\u5e38\u534a\u591c\u88ab\u544a\u8b66\u53eb\u9192\u7684\u540c\u5b66\uff0c\u4e8b\u540e\u590d\u76d8\u6bd4\u73b0\u573a\u6551\u706b\u66f4\u91cd\u8981\u3002\u628a\u6bcf\u6b21\u6392\u67e5\u7684\u65f6\u95f4\u7ebf\u3001pidstat \u8f93\u51fa\u548c\u5904\u7406\u52a8\u4f5c\u8bb0\u4e0b\u6765\uff0c\u51e0\u6b21\u4e4b\u540e\u4f60\u4f1a\u53d1\u73b0\u540c\u7c7b\u5e94\u7528\u7684\u95ee\u9898\u6a21\u5f0f\u9ad8\u5ea6\u91cd\u590d\u3002\u5982\u679c\u5e0c\u671b\u544a\u8b66\u672c\u8eab\u66f4\u806a\u660e\u3001\u5c11\u4e00\u4e9b\u65e0\u6548\u6253\u6270\uff0c\u53ef\u4ee5\u53c2\u8003\u8fd9\u7bc7 <a href=\"https:\/\/cn.hostease.com\/blog\/tutorials\/server-monitoring-alerts\/\">\u670d\u52a1\u5668\u76d1\u63a7\u544a\u8b66\u914d\u7f6e\uff1aPrometheus \u4e0e Grafana \u843d\u5730\u6e05\u5355<\/a>\uff0c\u628a CPU\u3001\u8d1f\u8f7d\u3001iowait \u4e00\u8d77\u7eb3\u5165\u5206\u7ea7\u544a\u8b66\u3002<\/p>\n<h2>\u603b\u7ed3\u4e0e\u4e0b\u4e00\u6b65\u5efa\u8bae<\/h2>\n<p>\u6838\u5fc3\u6392\u67e5\u601d\u8def\u53ef\u4ee5\u6d53\u7f29\u6210\u4e00\u53e5\u8bdd\uff1atop \u5b9a\u65b9\u5411\uff0cpidstat \u5b9a\u8fdb\u7a0b\uff0c\u7ebf\u7a0b\u7ea7\u4e0b\u94bb\u5b9a\u6839\u56e0\uff0c\u6309 us\/sy\/wa \u4e09\u7c7b\u5206\u522b\u65bd\u6cbb\u3002\u4e09\u4e2a\u5bb9\u6613\u8e29\u7684\u5751\uff1a\u53ea\u770b CPU \u4f7f\u7528\u7387\u4e0d\u770b\u8d1f\u8f7d\uff0c\u4f1a\u9519\u8fc7 I\/O \u578b\u95ee\u9898\uff1b\u6b62\u6b65\u4e8e\u8fdb\u7a0b\u7ea7\u5e73\u5747\u6570\uff0c\u4f1a\u6f0f\u6389\u5355\u7ebf\u7a0b\u70ed\u70b9\uff1b\u53d1\u73b0\u8d44\u6e90\u4e0d\u591f\u5c31\u76f2\u76ee\u91cd\u542f\uff0c\u4e0d\u5982\u7559\u5b58 pidstat \u8bc1\u636e\u518d\u51b3\u5b9a\u4f18\u5316\u8fd8\u662f\u6269\u5bb9\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u7ba1\u7406\u591a\u53f0\u670d\u52a1\u5668\u3001\u5e0c\u671b\u6709\u66f4\u7701\u5fc3\u7684\u73af\u5883\u2014\u2014\u6211\u4eec\u5efa\u8bae\u7684\u505a\u6cd5\u662f\u9009\u62e9\u9ed8\u8ba4\u5e26\u8d44\u6e90\u76d1\u63a7\u3001\u652f\u6301\u4e00\u952e\u5feb\u7167\u56de\u6eda\u7684\u4e3b\u673a\u65b9\u6848\u3002Hostease \u7684 VPS \u548c<a href=\"https:\/\/cn.hostease.com\/dedicated-server\/\">\u72ec\u7acb\u670d\u52a1\u5668<\/a>\u63d0\u4f9b NVMe \u5b58\u50a8\u4e0e\u4e2d\u6587\u6280\u672f\u652f\u6301\uff0c\u9047\u5230\u8d1f\u8f7d\u95ee\u9898\u53ef\u4ee5\u76f4\u63a5\u63d0\u4ea4\u5de5\u5355\u8ba9\u5de5\u7a0b\u5e08\u534f\u52a9\u5b9a\u4f4d\u3002\u5efa\u8bae\u5148\u4ece\u4e00\u53f0\u4e1a\u52a1\u6700\u5173\u952e\u7684\u673a\u5668\u5f00\u59cb\u5efa\u7acb pidstat 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