{"id":100456,"date":"2026-09-04T18:40:50","date_gmt":"2026-09-04T10:40:50","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/100456.html"},"modified":"2026-09-04T18:40:50","modified_gmt":"2026-09-04T10:40:50","slug":"cpu-%e8%b4%9f%e8%bd%bd%e4%b8%8e-i-o-%e8%b4%9f%e8%bd%bd%e8%af%a6%e8%a7%a3%ef%bc%9a%e5%8e%9f%e7%90%86%e3%80%81%e5%8e%8b%e5%8a%9b%e6%9d%a5%e6%ba%90%e3%80%81%e7%9b%91%e6%8e%a7%e4%b8%8e%e8%b0%83%e4%bc%98","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/100456.html","title":{"rendered":"CPU \u8d1f\u8f7d\u4e0e I\/O \u8d1f\u8f7d\u8be6\u89e3\uff1a\u539f\u7406\u3001\u538b\u529b\u6765\u6e90\u3001\u76d1\u63a7\u4e0e\u8c03\u4f18"},"content":{"rendered":"<h2>CPU \u8d1f\u8f7d\u4e0e I\/O \u8d1f\u8f7d\u8be6\u89e3&#xff1a;\u539f\u7406\u3001\u538b\u529b\u6765\u6e90\u3001\u76d1\u63a7\u4e0e\u8c03\u4f18<\/h2>\n<p>\u5728\u6027\u80fd\u5de5\u7a0b\u4e2d&#xff0c;\u6211\u4eec\u5e38\u8bf4&#034;CPU \u5bc6\u96c6\u578b&#034;\u7528 CPU \u8d1f\u8f7d\u8861\u91cf\u7cfb\u7edf\u538b\u529b&#xff0c;&#034;I\/O \u5bc6\u96c6\u578b&#034;\u7528 I\/O \u8d1f\u8f7d\u8861\u91cf\u7cfb\u7edf\u538b\u529b\u3002\u672c\u6587\u7cfb\u7edf\u68b3\u7406\u8fd9\u4e24\u7c7b\u8d1f\u8f7d\u5230\u5e95\u6307\u4ec0\u4e48\u64cd\u4f5c\u3001\u4e3a\u4ec0\u4e48\u4f1a\u7ed9\u7cfb\u7edf\u5e26\u6765\u538b\u529b\u3001\u538b\u529b\u8fc7\u5927\u65f6\u5982\u4f55\u89e3\u51b3&#xff0c;\u4ee5\u53ca\u5982\u4f55\u83b7\u53d6\u8fd9\u4e9b\u6307\u6807\u3002<\/p>\n<hr \/>\n<h3>\u4e00\u3001\u57fa\u672c\u6982\u5ff5&#xff1a;\u8d1f\u8f7d&#xff08;Load&#xff09;\u5230\u5e95\u662f\u4ec0\u4e48<\/h3>\n<p>\u5728 Linux \u4e2d&#xff0c;&#034;\u8d1f\u8f7d&#034;\u6700\u76f4\u89c2\u7684\u4f53\u73b0\u662f load average&#xff08;\u5e73\u5747\u8d1f\u8f7d&#xff09;&#xff0c;\u5b83\u8868\u793a\u7684\u662f&#xff1a;\u5728\u5355\u4f4d\u65f6\u95f4\u5185&#xff0c;\u7cfb\u7edf\u4e2d\u5904\u4e8e\u53ef\u8fd0\u884c\u72b6\u6001&#xff08;R&#xff09;\u548c\u4e0d\u53ef\u4e2d\u65ad\u7761\u7720\u72b6\u6001&#xff08;D&#xff09;\u7684\u5e73\u5747\u8fdb\u7a0b\u6570\u3002<\/p>\n<ul>\n<li>R&#xff08;Running\/Runnable&#xff09;&#xff1a;\u6b63\u5728 CPU \u4e0a\u8fd0\u884c&#xff0c;\u6216\u5728\u8fd0\u884c\u961f\u5217\u91cc\u7b49\u5f85 CPU \u8c03\u5ea6\u7684\u8fdb\u7a0b\u3002\u2192 \u5bf9\u5e94 CPU \u8d1f\u8f7d<\/li>\n<li>D&#xff08;Uninterruptible Sleep&#xff09;&#xff1a;\u6b63\u5728\u7b49\u5f85\u78c1\u76d8 I\/O \u6216\u67d0\u4e9b\u5185\u6838\u9501&#xff0c;\u4e0d\u53ef\u88ab\u4fe1\u53f7\u4e2d\u65ad\u7684\u8fdb\u7a0b\u3002\u2192 \u5bf9\u5e94 I\/O \u8d1f\u8f7d<\/li>\n<\/ul>\n<p>\u6240\u4ee5 load average \u540c\u65f6\u5305\u542b\u4e86 CPU \u538b\u529b\u548c I\/O \u538b\u529b\u4e24\u7c7b\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5355\u770b\u8d1f\u8f7d\u9ad8&#xff0c;\u65e0\u6cd5\u5224\u65ad\u74f6\u9888\u5230\u5e95\u5728 CPU \u8fd8\u662f\u5728\u78c1\u76d8\u2014\u2014\u9700\u8981\u7ed3\u5408\u66f4\u591a\u6307\u6807\u3002<\/p>\n<p>$ uptime<br \/>\n 10:30:00 up 30 days,  2 users,  load average: 2.50, 1.80, 1.20<br \/>\n                                              \u21911\u5206\u949f  \u21915\u5206\u949f \u219115\u5206\u949f<\/p>\n<p>\u7ecf\u9a8c\u6cd5\u5219&#xff1a;\u8d1f\u8f7d\u503c\u957f\u671f &gt; CPU \u903b\u8f91\u6838\u6570 \u00d7 1&#xff0c;\u8bf4\u660e\u7cfb\u7edf\u5b58\u5728\u538b\u529b&#xff1b;&gt; \u6838\u6570 \u00d7 2~4 \u901a\u5e38\u610f\u5473\u7740\u660e\u663e\u8fc7\u8f7d\u3002<\/p>\n<hr \/>\n<h3>\u4e8c\u3001CPU \u8d1f\u8f7d<\/h3>\n<h4>2.1 CPU \u8d1f\u8f7d\u4e3b\u8981\u6307\u4ec0\u4e48\u64cd\u4f5c<\/h4>\n<p>CPU \u8d1f\u8f7d\u9ad8&#xff0c;\u610f\u5473\u7740\u5927\u91cf\u65f6\u95f4\u82b1\u5728 CPU \u8ba1\u7b97\u672c\u8eab&#xff0c;\u800c\u975e\u7b49\u5f85\u5916\u90e8\u8d44\u6e90\u3002\u5178\u578b\u64cd\u4f5c&#xff1a;<\/p>\n<table>\n<tr>\u7c7b\u522b\u5178\u578b\u64cd\u4f5c<\/tr>\n<tbody>\n<tr>\n<td>\u6570\u503c\u8ba1\u7b97<\/td>\n<td>\u79d1\u5b66\u8ba1\u7b97\u3001\u77e9\u9635\u8fd0\u7b97\u3001\u52a0\u5bc6\/\u89e3\u5bc6&#xff08;AES\u3001RSA&#xff09;\u3001\u54c8\u5e0c\u8ba1\u7b97&#xff08;SHA\u3001bcrypt&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u5904\u7406<\/td>\n<td>\u5927\u89c4\u6a21\u6392\u5e8f\u3001\u805a\u5408\u3001\u6b63\u5219\u5339\u914d\u6d77\u91cf\u6587\u672c\u3001JSON\/XML \u89e3\u6790\u4e0e\u5e8f\u5217\u5316<\/td>\n<\/tr>\n<tr>\n<td>\u7f16\u8bd1\u4e0e\u538b\u7f29<\/td>\n<td>\u4ee3\u7801\u7f16\u8bd1&#xff08;gcc\/javac&#xff09;\u3001\u89c6\u9891\u8f6c\u7801&#xff08;H.264\/H.265&#xff09;\u3001\u538b\u7f29\u89e3\u538b&#xff08;gzip\/zstd&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u673a\u5668\u5b66\u4e60<\/td>\n<td>\u6a21\u578b\u8bad\u7ec3\u3001\u63a8\u7406&#xff08;\u524d\u5411\/\u53cd\u5411\u4f20\u64ad&#xff09;\u3001\u7279\u5f81\u5de5\u7a0b<\/td>\n<\/tr>\n<tr>\n<td>\u4e1a\u52a1\u903b\u8f91<\/td>\n<td>\u590d\u6742\u4e1a\u52a1\u89c4\u5219\u8ba1\u7b97\u3001\u56fe\u7b97\u6cd5\u3001\u9012\u5f52\u56de\u6eaf\u3001\u865a\u62df\u673a\/JIT \u6267\u884c<\/td>\n<\/tr>\n<tr>\n<td>\u5185\u5b58\u5bc6\u96c6\u8ba1\u7b97<\/td>\n<td>\u5927\u5bf9\u8c61 GC&#xff08;\u5783\u573e\u56de\u6536\u4f1a\u5360 CPU&#xff09;\u3001\u5185\u5b58\u62f7\u8d1d\u3001\u5e8f\u5217\u5316<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u7279\u5f81&#xff1a;\u8fdb\u7a0b\u5927\u90e8\u5206\u65f6\u95f4\u5904\u4e8e R \u72b6\u6001&#xff0c;\u9891\u7e41\u5360\u7528 CPU \u65f6\u95f4\u7247&#xff0c;\u51e0\u4e4e\u4e0d\u963b\u585e\u5728\u78c1\u76d8\u6216\u7f51\u7edc\u4e0a\u3002<\/p>\n<h4>2.2 \u4e3a\u4ec0\u4e48\u4f1a\u7ed9\u7cfb\u7edf\u5e26\u6765\u538b\u529b<\/h4>\n<li>CPU \u65f6\u95f4\u7247\u662f\u6709\u9650\u8d44\u6e90&#xff1a;\u6838\u6570\u51b3\u5b9a\u4e86\u540c\u4e00\u65f6\u523b\u80fd\u5e76\u884c\u6267\u884c\u7684\u6307\u4ee4\u6d41\u6570\u91cf\u30028 \u6838 CPU \u6700\u591a\u771f\u6b63\u5e76\u884c 8 \u4e2a\u7ebf\u7a0b\u3002<\/li>\n<li>\u8c03\u5ea6\u5f00\u9500&#xff1a;\u53ef\u8fd0\u884c\u8fdb\u7a0b\u8fc7\u591a\u65f6&#xff0c;\u8c03\u5ea6\u5668\u9891\u7e41\u5207\u6362\u4e0a\u4e0b\u6587&#xff08;context switch&#xff09;&#xff0c;\u7f13\u5b58&#xff08;L1\/L2\/TLB&#xff09;\u547d\u4e2d\u7387\u4e0b\u964d&#xff0c;\u9020\u6210&#034;\u5207\u6362\u8d8a\u591a\u8d8a\u6162&#034;\u7684\u6076\u6027\u5faa\u73af\u3002<\/li>\n<li>\u54cd\u5e94\u5ef6\u8fdf\u6076\u5316&#xff1a;CPU \u6392\u961f\u957f&#xff0c;\u4ea4\u4e92\u5f0f\u8bf7\u6c42\/\u5b9e\u65f6\u4efb\u52a1\u7684\u5ef6\u8fdf&#xff08;RT&#xff09;\u4e0a\u5347\u3002<\/li>\n<li>\u70ed\u4e0e\u529f\u8017&#xff1a;\u6301\u7eed\u9ad8 CPU \u5360\u7528\u4f1a\u62c9\u9ad8\u9891\u7387\u4e0e\u529f\u8017&#xff0c;\u53ef\u80fd\u89e6\u53d1\u964d\u9891&#xff08;thermal throttling&#xff09;\u53cd\u800c\u53d8\u6162\u3002<\/li>\n<li>\u7ea7\u8054\u6548\u5e94&#xff1a;CPU \u6253\u6ee1\u540e&#xff0c;GC\u3001\u5fc3\u8df3\u3001\u76d1\u63a7\u7ebf\u7a0b\u4e5f\u62ff\u4e0d\u5230\u65f6\u95f4\u7247&#xff0c;\u5bfc\u81f4\u96ea\u5d29\u3002<\/li>\n<h4>2.3 CPU \u538b\u529b\u8fc7\u5927\u65f6\u5982\u4f55\u89e3\u51b3<\/h4>\n<p>\u5148\u5b9a\u4f4d\u518d\u4f18\u5316&#xff1a;<\/p>\n<li>\u6a2a\u5411\u6269\u5bb9&#xff08;Scale Out&#xff09;&#xff1a;\u589e\u52a0\u8282\u70b9&#xff0c;\u628a\u8ba1\u7b97\u4efb\u52a1\u5206\u644a\u5230\u591a\u53f0\u673a\u5668&#xff08;MapReduce\u3001\u5206\u7247&#xff09;\u3002<\/li>\n<li>\u7eb5\u5411\u6269\u5bb9&#xff08;Scale Up&#xff09;&#xff1a;\u63d0\u5347\u5355\u673a CPU \u6838\u6570\/\u4e3b\u9891&#xff0c;\u6216\u7ed1\u6838&#xff08;taskset\/cgroups&#xff09;\u9694\u79bb\u5173\u952e\u8fdb\u7a0b\u3002<\/li>\n<li>\u7b97\u6cd5\u4e0e\u6570\u636e\u7ed3\u6784\u4f18\u5316&#xff1a;\u964d\u4f4e\u65f6\u95f4\u590d\u6742\u5ea6&#xff08;O(n\u00b2)\u2192O(n log n)&#xff09;\u3001\u7a7a\u95f4\u6362\u65f6\u95f4&#xff08;\u7f13\u5b58\/\u9884\u8ba1\u7b97&#xff09;\u3001\u51cf\u5c11\u91cd\u590d\u8ba1\u7b97&#xff08;\u8bb0\u5fc6\u5316&#xff09;\u3002<\/li>\n<li>\u5f02\u6b65\u4e0e\u5e76\u53d1\u6a21\u578b&#xff1a;CPU \u5bc6\u96c6\u4efb\u52a1\u7528\u56fa\u5b9a\u5927\u5c0f\u7ebf\u7a0b\u6c60&#xff08;\u7ebf\u7a0b\u6570 \u2248 \u6838\u6570 &#043; 1&#xff09;&#xff0c;\u907f\u514d\u7ebf\u7a0b\u8fc7\u591a\u5f15\u53d1\u5207\u6362&#xff1b;\u7528\u534f\u7a0b\/Reactive \u6a21\u578b\u51cf\u5c11\u963b\u585e\u3002<\/li>\n<li>\u5378\u8f7d\u5230\u4e13\u7528\u786c\u4ef6&#xff1a;GPU \u52a0\u901f&#xff08;CUDA&#xff09;\u3001\u52a0\u5bc6\u5361\u3001\u5411\u91cf\u5316\u6307\u4ee4&#xff08;SIMD\/AVX&#xff09;\u3002<\/li>\n<li>\u9650\u6d41\u4e0e\u524a\u5cf0&#xff1a;\u5bf9\u7a81\u53d1\u6d41\u91cf\u7528\u4ee4\u724c\u6876\/\u6f0f\u6876\u9650\u6d41&#xff0c;\u4efb\u52a1\u6392\u961f&#xff0c;\u4fdd\u62a4\u6838\u5fc3\u94fe\u8def\u3002<\/li>\n<li>\u70ed\u70b9\u6392\u67e5&#xff1a;\u7528 perf top \/ \u706b\u7130\u56fe&#xff08;FlameGraph&#xff09;\u627e\u51fa\u70ed\u70b9\u51fd\u6570&#xff0c;\u9488\u5bf9\u6027\u4f18\u5316\u3002<\/li>\n<li>JIT\/GC \u8c03\u4f18&#xff1a;JVM \u7c7b\u5e94\u7528\u8c03\u6574 GC \u7b56\u7565\u4e0e\u5806\u53c2\u6570&#xff0c;\u51cf\u5c11\u505c\u987f\u3002<\/li>\n<h4>2.4 \u5982\u4f55\u83b7\u53d6 CPU \u6307\u6807<\/h4>\n<table>\n<tr>\u5de5\u5177\u7528\u9014\u5173\u952e\u6307\u6807<\/tr>\n<tbody>\n<tr>\n<td>uptime \/ cat \/proc\/loadavg<\/td>\n<td>\u67e5\u770b\u5e73\u5747\u8d1f\u8f7d<\/td>\n<td>1\/5\/15 \u5206\u949f load average<\/td>\n<\/tr>\n<tr>\n<td>top \/ htop<\/td>\n<td>\u8fdb\u7a0b\u7ea7 CPU \u5360\u7528<\/td>\n<td>%CPU\u3001\u8fd0\u884c\u961f\u5217\u957f\u5ea6\u3001us\/sy\/si\/wa<\/td>\n<\/tr>\n<tr>\n<td>vmstat 1<\/td>\n<td>\u7cfb\u7edf\u7ea7 CPU \u4e0e\u4e0a\u4e0b\u6587\u5207\u6362<\/td>\n<td>r&#xff08;\u8fd0\u884c\u961f\u5217&#xff09;\u3001us\u3001sy\u3001cs&#xff08;\u4e0a\u4e0b\u6587\u5207\u6362&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>mpstat -P ALL 1<\/td>\n<td>\u6bcf\u4e2a CPU \u6838\u7684\u4f7f\u7528\u7387<\/td>\n<td>%usr\/%sys\/%iowait\/%idle<\/td>\n<\/tr>\n<tr>\n<td>pidstat 1<\/td>\n<td>\u8fdb\u7a0b\u7ea7 CPU<\/td>\n<td>\u5404\u8fdb\u7a0b %CPU<\/td>\n<\/tr>\n<tr>\n<td>perf top \/ perf record<\/td>\n<td>\u51fd\u6570\u7ea7\u70ed\u70b9\u5256\u6790<\/td>\n<td>CPU \u5468\u671f\u5360\u7528\u6392\u884c<\/td>\n<\/tr>\n<tr>\n<td>sar -u 1<\/td>\n<td>\u5386\u53f2\u4e0e\u5b9e\u65f6 CPU<\/td>\n<td>\u957f\u671f\u8d8b\u52bf<\/td>\n<\/tr>\n<tr>\n<td>ps -eLo psr,pid,comm<\/td>\n<td>\u67e5\u770b\u7ebf\u7a0b\u8dd1\u5728\u54ea\u6838<\/td>\n<td>\u7ed1\u6838\u5206\u6790<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5173\u952e\u89e3\u8bfb&#xff1a;<\/p>\n<ul>\n<li>us \u9ad8 \u2192 \u7528\u6237\u6001\u8ba1\u7b97\u5bc6\u96c6&#xff0c;\u4f18\u5316\u4e1a\u52a1\u4ee3\u7801\u3002<\/li>\n<li>sy \u9ad8 \u2192 \u5185\u6838\u6001\u5f00\u9500\u5927&#xff0c;\u53ef\u80fd\u662f\u7cfb\u7edf\u8c03\u7528\/\u4e0a\u4e0b\u6587\u5207\u6362\/\u9501\u7ade\u4e89\u8fc7\u591a\u3002<\/li>\n<li>si&#xff08;softirq&#xff09;\u9ad8 \u2192 \u7f51\u7edc\u4e2d\u65ad\/\u8f6f\u4e2d\u65ad\u9891\u7e41\u3002<\/li>\n<li>wa&#xff08;iowait&#xff09;\u9ad8 \u2192 \u5b9e\u9645\u662f\u78c1\u76d8\u74f6\u9888&#034;\u4f2a\u88c5&#034;\u6210 CPU \u7b49\u5f85&#xff0c;\u5e94\u8f6c\u5411 I\/O \u5206\u6790\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>\u4e09\u3001I\/O \u8d1f\u8f7d<\/h3>\n<h4>3.1 I\/O \u8d1f\u8f7d\u4e3b\u8981\u6307\u4ec0\u4e48\u64cd\u4f5c<\/h4>\n<p>I\/O \u8d1f\u8f7d\u9ad8&#xff0c;\u610f\u5473\u7740\u5927\u91cf\u8fdb\u7a0b\u963b\u585e\u5728 \u7b49\u5f85\u5916\u90e8\u6570\u636e\u4f20\u8f93 \u4e0a&#xff08;D \u72b6\u6001&#xff09;\u3002I\/O \u5206\u4e3a\u51e0\u7c7b&#xff1a;<\/p>\n<table>\n<tr>I\/O \u7c7b\u578b\u5178\u578b\u64cd\u4f5c<\/tr>\n<tbody>\n<tr>\n<td>\u78c1\u76d8 I\/O<\/td>\n<td>\u6570\u636e\u5e93\u8bfb\u5199&#xff08;MySQL\/PostgreSQL&#xff09;\u3001\u65e5\u5fd7\u5199\u5165\u3001\u6587\u4ef6\u4e0a\u4f20\u4e0b\u8f7d\u3001\u5927\u6587\u4ef6\u8bfb\u53d6\u3001Checkpoint \u5237\u76d8<\/td>\n<\/tr>\n<tr>\n<td>\u7f51\u7edc I\/O<\/td>\n<td>HTTP\/RPC \u8c03\u7528\u3001\u6570\u636e\u5e93\u8fde\u63a5\u7b49\u5f85\u3001Kafka \u6536\u53d1\u3001\u8de8\u673a\u623f\u540c\u6b65\u3001CDN \u56de\u6e90<\/td>\n<\/tr>\n<tr>\n<td>\u7ec8\u7aef\/\u8bbe\u5907 I\/O<\/td>\n<td>\u4e32\u53e3\u3001\u952e\u76d8\u8f93\u5165&#xff08;\u73b0\u4ee3\u573a\u666f\u5c11&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>IPC I\/O<\/td>\n<td>\u7ba1\u9053\u3001\u5171\u4eab\u5185\u5b58\u3001Unix Socket \u4f20\u8f93\u5927\u6570\u636e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u7279\u5f81&#xff1a;\u8fdb\u7a0b\u5927\u91cf\u65f6\u95f4\u5904\u4e8e D \u72b6\u6001&#xff0c;CPU \u53cd\u800c\u53ef\u80fd\u5f88\u95f2&#xff08;%idle \u9ad8\u4f46 load average \u9ad8&#xff09;&#xff0c;\u5178\u578b&#034;CPU \u6ca1\u6ee1\u4f46\u7cfb\u7edf\u5361&#034;\u3002<\/p>\n<h4>3.2 \u4e3a\u4ec0\u4e48\u4f1a\u7ed9\u7cfb\u7edf\u5e26\u6765\u538b\u529b<\/h4>\n<li>\u901f\u5ea6\u9e3f\u6c9f\u5de8\u5927&#xff1a;CPU \u4e3b\u9891 GHz \u7ea7&#xff08;\u7eb3\u79d2&#xff09;&#xff0c;\u5185\u5b58\u767e\u7eb3\u79d2&#xff0c;SSD \u5fae\u79d2\u7ea7&#xff0c;\u673a\u68b0\u76d8\u6beb\u79d2\u7ea7&#xff0c;\u7f51\u7edc\u5f80\u8fd4\u6beb\u79d2~\u79d2\u7ea7\u3002\u6162\u8bbe\u5907\u62d6\u7d2f\u6574\u4f53\u3002<\/li>\n<li>\u963b\u585e\u5360\u7528\u8d44\u6e90&#xff1a;\u6bcf\u4e2a\u7b49\u5f85 I\/O \u7684\u8fdb\u7a0b\/\u7ebf\u7a0b\u4ecd\u5360\u7528\u5185\u5b58\u3001\u6587\u4ef6\u63cf\u8ff0\u7b26\u3001\u8fde\u63a5\u6c60\u3001\u5185\u5b58\u7b49&#xff1b;\u7ebf\u7a0b\u6570\u81a8\u80c0\u3002<\/li>\n<li>\u78c1\u76d8\u673a\u68b0\u74f6\u9888&#xff1a;\u673a\u68b0\u76d8 IOPS \u901a\u5e38\u53ea\u6709 100~200&#xff1b;\u5373\u4f7f\u662f SSD&#xff0c;\u5199\u5165\u4e5f\u6709\u5bff\u547d\u4e0e\u5e26\u5bbd\u4e0a\u9650&#xff0c;\u968f\u673a\u5199\u5c24\u5176\u6602\u8d35\u3002<\/li>\n<li>\u4e0a\u4e0b\u6587\u5207\u6362&#xff1a;\u5927\u91cf\u963b\u585e\u7ebf\u7a0b\u88ab\u5524\u9192\u540e\u53c8\u963b\u585e&#xff0c;\u5f15\u53d1\u9891\u7e41\u8c03\u5ea6\u3002<\/li>\n<li>\u7f13\u5b58\u51fb\u7a7f&#xff1a;\u968f\u673a I\/O \u7834\u574f\u9884\u8bfb\u4e0e\u9875\u7f13\u5b58\u547d\u4e2d\u7387&#xff0c;\u653e\u5927\u5b9e\u9645\u78c1\u76d8\u538b\u529b\u3002<\/li>\n<li>\u9501\u4e0e\u8fde\u63a5\u6c60\u7ade\u4e89&#xff1a;\u8fde\u63a5\u6c60\u6253\u6ee1\u3001\u884c\u9501\u7b49\u5f85\u3001\u7f13\u51b2\u6c60\u5237\u810f\u6296\u52a8&#xff08;\u5982 MySQL doublewrite\/checkpoint \u98ce\u66b4&#xff09;\u3002<\/li>\n<li>\u7f51\u7edc\u5e26\u5bbd\u4e0e\u5ef6\u8fdf&#xff1a;\u5e26\u5bbd\u6253\u6ee1\u5f15\u53d1\u91cd\u4f20\u4e0e\u6392\u961f&#xff0c;RTT \u4e0a\u5347\u653e\u5927\u8bf7\u6c42\u65f6\u5ef6\u3002<\/li>\n<h4>3.3 I\/O \u538b\u529b\u8fc7\u5927\u65f6\u5982\u4f55\u89e3\u51b3<\/h4>\n<p>\u78c1\u76d8 I\/O \u65b9\u5411&#xff1a;<\/p>\n<li>\u52a0\u7f13\u5b58&#xff1a;\u5185\u5b58\u7f13\u5b58&#xff08;Redis\/Memcached&#xff09;\u3001\u9875\u7f13\u5b58\u9884\u8bfb\u3001\u5e94\u7528\u5c42\u672c\u5730\u7f13\u5b58&#xff0c;\u51cf\u5c11\u843d\u76d8\u8bbf\u95ee\u3002<\/li>\n<li>\u6279\u91cf\u4e0e\u5408\u5e76&#xff1a;\u6279\u91cf\u8bfb\u5199\u3001\u5408\u5e76\u5c0f I\/O&#xff08;write coalescing&#xff09;\u3001\u987a\u5e8f\u5199\u66ff\u4ee3\u968f\u673a\u5199&#xff08;LSM-Tree\u3001Kafka \u987a\u5e8f\u8ffd\u52a0&#xff09;\u3002<\/li>\n<li>\u5f02\u6b65\u4e0e\u7f13\u51b2&#xff1a;\u5f02\u6b65 I\/O&#xff08;aio\/epoll&#xff09;\u3001\u5199\u7f13\u51b2\u3001Write-Behind&#xff0c;\u8ba9\u8fdb\u7a0b\u4e0d\u7b49 I\/O \u5b8c\u6210\u3002<\/li>\n<li>\u5b58\u50a8\u5347\u7ea7&#xff1a;\u673a\u68b0\u76d8 \u2192 SATA SSD \u2192 NVMe SSD&#xff1b;RAID\/PV \u63d0\u5347\u5e76\u53d1\u5e26\u5bbd\u3002<\/li>\n<li>\u6570\u636e\u5e03\u5c40\u4f18\u5316&#xff1a;\u7d22\u5f15\u4f18\u5316\u51cf\u5c11\u56de\u8868\u3001\u5206\u533a\/\u5206\u7247\u964d\u4f4e\u5355\u76d8\u6570\u636e\u91cf\u3001\u5217\u5b58\u538b\u7f29\u3001\u51b7\u70ed\u5206\u5c42\u3002<\/li>\n<li>\u538b\u7f29\u4e0e\u53bb\u91cd&#xff1a;\u51cf\u5c11\u5b9e\u9645\u4f20\u8f93\u4e0e\u843d\u76d8\u5b57\u8282\u6570\u3002<\/li>\n<li>I\/O \u8c03\u5ea6\u5668\u4e0e\u961f\u5217&#xff1a;\u8c03\u6574 cfq\/mq-deadline\/none\u3001nr_requests\u3001\u78c1\u76d8\u961f\u5217\u6df1\u5ea6\u3002<\/li>\n<li>\u96f6\u62f7\u8d1d&#xff1a;sendfile\/mmap \u51cf\u5c11\u5185\u6838-\u7528\u6237\u6001\u6570\u636e\u62f7\u8d1d\u3002<\/li>\n<p>\u7f51\u7edc I\/O \u65b9\u5411&#xff1a;<\/p>\n<li>\u8fde\u63a5\u590d\u7528&#xff1a;\u8fde\u63a5\u6c60\u3001HTTP Keep-Alive\u3001\u591a\u8def\u590d\u7528&#xff08;HTTP\/2\u3001gRPC \u591a\u8def\u590d\u7528&#xff09;\u3002<\/li>\n<li>\u5f02\u6b65\u975e\u963b\u585e&#xff1a;NIO\/epoll\/Reactor \u6a21\u578b&#xff0c;\u5c11\u91cf\u7ebf\u7a0b\u6491\u8d77\u5927\u91cf\u8fde\u63a5\u3002<\/li>\n<li>\u51cf\u5c11\u8de8\u7f51\u7edc\u8c03\u7528&#xff1a;\u6279\u91cf\u5316\u63a5\u53e3\u3001\u672c\u5730\u805a\u5408\u3001\u7f13\u5b58\u7ed3\u679c\u3001\u52a8\u9759\u5206\u79bb\u3002<\/li>\n<li>\u538b\u7f29\u4e0e\u534f\u8bae\u4f18\u5316&#xff1a;protobuf\/thrift \u66ff\u4ee3 JSON\u3001gzip\/brotli \u538b\u7f29\u3001\u51cf\u5c11 payload\u3002<\/li>\n<li>\u5c31\u8fd1\u8bbf\u95ee&#xff1a;CDN\u3001\u8fb9\u7f18\u7f13\u5b58\u3001\u540c\u53ef\u7528\u533a\u90e8\u7f72\u3001\u8bfb\u5199\u5206\u79bb\u5c31\u8fd1\u8bfb\u3002<\/li>\n<li>\u8d85\u65f6\u4e0e\u7194\u65ad&#xff1a;\u8bbe\u7f6e\u5408\u7406\u8d85\u65f6\u3001\u7194\u65ad\u5668&#xff08;Hystrix\/Sentinel&#xff09;&#xff0c;\u907f\u514d\u7ea7\u8054\u963b\u585e\u3002<\/li>\n<h4>3.4 \u5982\u4f55\u83b7\u53d6 I\/O \u6307\u6807<\/h4>\n<table>\n<tr>\u5de5\u5177\u7528\u9014\u5173\u952e\u6307\u6807<\/tr>\n<tbody>\n<tr>\n<td>iostat -dx 1<\/td>\n<td>\u6bcf\u5757\u78c1\u76d8\u7684 I\/O \u7edf\u8ba1<\/td>\n<td>r\/s\u3001w\/s\u3001rkB\/s\u3001await\u3001%util\u3001svctm<\/td>\n<\/tr>\n<tr>\n<td>vmstat 1<\/td>\n<td>\u7cfb\u7edf\u7ea7 I\/O \u4e0e\u8fd0\u884c\u72b6\u6001<\/td>\n<td>bo\/bi&#xff08;\u5757\u8bfb\u5199&#xff09;\u3001wa&#xff08;iowait&#xff09;\u3001b&#xff08;D \u72b6\u6001\u8fdb\u7a0b\u6570&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>iotop<\/td>\n<td>\u8fdb\u7a0b\u7ea7 I\/O \u5360\u7528<\/td>\n<td>\u5404\u8fdb\u7a0b\u8bfb\u5199\u5e26\u5bbd<\/td>\n<\/tr>\n<tr>\n<td>pidstat -d 1<\/td>\n<td>\u8fdb\u7a0b\u7ea7\u78c1\u76d8 I\/O<\/td>\n<td>\u8fdb\u7a0b kB_rd\/s\u3001kB_wr\/s<\/td>\n<\/tr>\n<tr>\n<td>dstat<\/td>\n<td>\u7efc\u5408<\/td>\n<td>\u78c1\u76d8\u3001\u7f51\u7edc\u3001CPU \u4e00\u5c4f<\/td>\n<\/tr>\n<tr>\n<td>sar -d 1 \/ sar -n DEV 1<\/td>\n<td>\u5386\u53f2\u78c1\u76d8\u4e0e\u7f51\u7edc<\/td>\n<td>\u957f\u671f\u8d8b\u52bf<\/td>\n<\/tr>\n<tr>\n<td>nstat\/ss -s\/netstat -s<\/td>\n<td>\u7f51\u7edc\u534f\u8bae\u6808<\/td>\n<td>\u91cd\u4f20\u3001\u4e22\u5305\u3001\u8fde\u63a5\u6570<\/td>\n<\/tr>\n<tr>\n<td>ethtool\/iftop\/nethogs<\/td>\n<td>\u7f51\u5361\u4e0e\u8fdb\u7a0b\u7ea7\u6d41\u91cf<\/td>\n<td>\u5e26\u5bbd\u5360\u7528\u3001\u6536\u53d1\u901f\u7387<\/td>\n<\/tr>\n<tr>\n<td>blktrace \/ ftrace<\/td>\n<td>\u5757\u5c42\u8ffd\u8e2a<\/td>\n<td>I\/O \u843d\u76d8\u8def\u5f84\u4e0e\u5ef6\u8fdf\u5206\u5e03<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5173\u952e\u89e3\u8bfb&#xff1a;<\/p>\n<ul>\n<li>await \u9ad8 \u2192 \u8bf7\u6c42\u5728\u961f\u5217\u91cc\u7b49\u592a\u4e45&#xff0c;\u78c1\u76d8\u53ef\u80fd\u8fc7\u8f7d\u6216\u968f\u673a I\/O \u8fc7\u591a\u3002<\/li>\n<li>%util \u63a5\u8fd1 100% \u2192 \u78c1\u76d8\u5e26\u5bbd\/\u65f6\u95f4\u88ab\u6253\u6ee1&#xff08;\u6ce8\u610f&#xff1a;SSD \u4e0a %util&#061;100% \u4e0d\u4e00\u5b9a\u5230\u74f6\u9888&#xff0c;\u56e0\u591a\u961f\u5217\u5e76\u53d1&#xff09;\u3002<\/li>\n<li>wa&#xff08;iowait&#xff09;\u9ad8 &#043; b \u9ad8 &#043; CPU %idle \u9ad8 \u2192 \u5178\u578b I\/O \u74f6\u9888\u3002<\/li>\n<li>\u7f51\u7edc retrans\/drop \u589e\u957f \u2192 \u7f51\u7edc\u8d28\u91cf\u95ee\u9898\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>\u56db\u3001CPU \u8d1f\u8f7d vs I\/O \u8d1f\u8f7d\u5bf9\u6bd4<\/h3>\n<table>\n<tr>\u7ef4\u5ea6CPU \u8d1f\u8f7dI\/O \u8d1f\u8f7d<\/tr>\n<tbody>\n<tr>\n<td>\u8fdb\u7a0b\u72b6\u6001<\/td>\n<td>\u4e3b\u8981 R&#xff08;\u8fd0\u884c\/\u5c31\u7eea&#xff09;<\/td>\n<td>\u4e3b\u8981 D&#xff08;\u4e0d\u53ef\u4e2d\u65ad\u7761\u7720&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u74f6\u9888\u4f4d\u7f6e<\/td>\n<td>CPU \u7b97\u529b<\/td>\n<td>\u78c1\u76d8\/\u7f51\u7edc\/\u8bbe\u5907<\/td>\n<\/tr>\n<tr>\n<td>\u5178\u578b top \u8868\u73b0<\/td>\n<td>us\/sy \u9ad8&#xff0c;%idle \u4f4e<\/td>\n<td>%idle \u9ad8&#xff0c;wa \u9ad8&#xff0c;load \u9ad8<\/td>\n<\/tr>\n<tr>\n<td>\u4f18\u5316\u65b9\u5411<\/td>\n<td>\u6269\u5bb9\u3001\u7b97\u6cd5\u3001\u5f02\u6b65\u5378\u8f7d<\/td>\n<td>\u7f13\u5b58\u3001\u6279\u91cf\u3001\u5f02\u6b65\u3001\u5347\u7ea7\u5b58\u50a8<\/td>\n<\/tr>\n<tr>\n<td>\u65f6\u95f4\u5c3a\u5ea6<\/td>\n<td>\u7eb3\u79d2~\u6beb\u79d2<\/td>\n<td>\u5fae\u79d2~\u79d2<\/td>\n<\/tr>\n<tr>\n<td>\u5e38\u89c1\u8bef\u5224<\/td>\n<td>\u628a GC \u505c\u987f\u5f53 I\/O<\/td>\n<td>\u628a iowait \u9ad8\u5f53 CPU \u4e0d\u591f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u5feb\u901f\u5224\u65ad\u53e3\u8bc0<\/h4>\n<ul>\n<li>CPU %us \u9ad8 &#043; load \u9ad8 \u2192 CPU \u5bc6\u96c6&#xff0c;\u53bb\u4f18\u5316\u8ba1\u7b97\u3002<\/li>\n<li>CPU %idle \u9ad8 &#043; wa \u9ad8 &#043; load \u9ad8 \u2192 I\/O \u5bc6\u96c6&#xff0c;\u53bb\u4f18\u5316\u5b58\u50a8\/\u7f51\u7edc\u3002<\/li>\n<li>%sy \u9ad8 \u2192 \u7cfb\u7edf\u8c03\u7528\/\u4e0a\u4e0b\u6587\u5207\u6362\/\u9501\u7ade\u4e89&#xff0c;\u53bb\u51cf\u5c11\u7ebf\u7a0b\u6570\u4e0e\u9501\u3002<\/li>\n<li>load \u9ad8\u4f46 CPU\/IO \u90fd\u4e0d\u7a81\u51fa \u2192 \u53ef\u80fd D \u72b6\u6001\u8fdb\u7a0b\u591a&#xff08;\u5185\u6838\u9501\u3001NFS \u6302\u8f7d\u5361\u6b7b&#xff09;&#xff0c;\u6392\u67e5\u5185\u6838\u6001\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>\u4e94\u3001\u76d1\u63a7\u6307\u6807\u83b7\u53d6\u603b\u89c8&#xff08;\u547d\u4ee4\u901f\u67e5&#xff09;<\/h3>\n<p><span class=\"token comment\"># &#061;&#061;&#061; \u7efc\u5408\u8d1f\u8f7d &#061;&#061;&#061;<\/span><br \/>\n<span class=\"token function\">uptime<\/span>                              <span class=\"token comment\"># load average<\/span><br \/>\n<span class=\"token function\">cat<\/span> \/proc\/loadavg                   <span class=\"token comment\"># \u8d1f\u8f7d &#043; \u8fd0\u884c\/\u603b\u8fdb\u7a0b\u6570<\/span><\/p>\n<p><span class=\"token comment\"># &#061;&#061;&#061; CPU &#061;&#061;&#061;<\/span><br \/>\n<span class=\"token function\">top<\/span> <span class=\"token parameter variable\">-bn1<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">head<\/span> <span class=\"token parameter variable\">-5<\/span>                 <span class=\"token comment\"># CPU \u603b\u89c8<\/span><br \/>\nmpstat <span class=\"token parameter variable\">-P<\/span> ALL <span class=\"token number\">1<\/span> <span class=\"token number\">2<\/span>                  <span class=\"token comment\"># \u6bcf\u6838\u4f7f\u7528\u7387<\/span><br \/>\n<span class=\"token function\">vmstat<\/span> <span class=\"token number\">1<\/span> <span class=\"token number\">5<\/span>                         <span class=\"token comment\"># r\/b\/cs\/us\/sy\/wa<\/span><br \/>\npidstat <span class=\"token parameter variable\">-u<\/span> <span class=\"token number\">1<\/span>                       <span class=\"token comment\"># \u8fdb\u7a0b CPU<\/span><br \/>\nperf <span class=\"token function\">top<\/span>                           <span class=\"token comment\"># \u51fd\u6570\u70ed\u70b9<\/span><\/p>\n<p><span class=\"token comment\"># &#061;&#061;&#061; \u78c1\u76d8 I\/O &#061;&#061;&#061;<\/span><br \/>\niostat <span class=\"token parameter variable\">-dx<\/span> <span class=\"token number\">1<\/span> <span class=\"token number\">5<\/span>                     <span class=\"token comment\"># \u6bcf\u76d8 IOPS\/\u5e26\u5bbd\/await\/util<\/span><br \/>\niotop <span class=\"token parameter variable\">-o<\/span>                           <span class=\"token comment\"># \u8fdb\u7a0b I\/O<\/span><br \/>\npidstat <span class=\"token parameter variable\">-d<\/span> <span class=\"token number\">1<\/span>                       <span class=\"token comment\"># \u8fdb\u7a0b\u8bfb\u5199<\/span><br \/>\nsar <span class=\"token parameter variable\">-d<\/span> <span class=\"token number\">1<\/span>                           <span class=\"token comment\"># \u5386\u53f2\u78c1\u76d8<\/span><\/p>\n<p><span class=\"token comment\"># &#061;&#061;&#061; \u7f51\u7edc I\/O &#061;&#061;&#061;<\/span><br \/>\nsar <span class=\"token parameter variable\">-n<\/span> DEV <span class=\"token number\">1<\/span>                       <span class=\"token comment\"># \u7f51\u5361\u6d41\u91cf<\/span><br \/>\nss <span class=\"token parameter variable\">-s<\/span> \/ <span class=\"token function\">netstat<\/span> <span class=\"token parameter variable\">-s<\/span>                 <span class=\"token comment\"># \u8fde\u63a5\u4e0e\u534f\u8bae\u6808<\/span><br \/>\nnethogs                            <span class=\"token comment\"># \u8fdb\u7a0b\u7ea7\u6d41\u91cf<\/span><\/p>\n<p><span class=\"token comment\"># &#061;&#061;&#061; \u7efc\u5408\u53ef\u89c6\u5316 &#061;&#061;&#061;<\/span><br \/>\ndstat <span class=\"token parameter variable\">-tcdmn<\/span>                       <span class=\"token comment\"># \u4e00\u5c4f\u770b CPU\/\u78c1\u76d8\/\u7f51\u7edc\/\u5185\u5b58<\/span><\/p>\n<h4>\u63a8\u8350\u6301\u7eed\u76d1\u63a7\u6808<\/h4>\n<ul>\n<li>Prometheus &#043; node_exporter &#043; Grafana&#xff1a;\u957f\u671f\u5b58\u50a8\u4e0e\u53ef\u89c6\u5316 CPU\/I\/O \u6307\u6807\u3002<\/li>\n<li>node_exporter \u66b4\u9732 node_load1\/5\/15\u3001node_cpu_*\u3001node_disk_*\u3001node_network_*\u3002<\/li>\n<li>\u4e1a\u52a1\u4fa7&#xff1a;APM&#xff08;SkyWalking\/Pinpoint&#xff09;\u8ffd\u8e2a\u6162\u8c03\u7528&#xff0c;\u533a\u5206 CPU \u74f6\u9888\u4e0e\u5916\u90e8 I\/O \u74f6\u9888\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>\u516d\u3001\u5c0f\u7ed3<\/h3>\n<li>CPU \u8d1f\u8f7d\u672c\u8d28\u662f&#034;\u7b97\u529b\u6392\u961f&#034;&#xff0c;\u538b\u529b\u6765\u81ea\u8ba1\u7b97\u9700\u6c42\u8d85\u8fc7 CPU \u5e76\u884c\u5904\u7406\u80fd\u529b&#xff0c;\u89e3\u6cd5\u662f \u6269\u5bb9 &#043; \u7b97\u6cd5\u4f18\u5316 &#043; \u5f02\u6b65\u5378\u8f7d\u3002<\/li>\n<li>I\/O \u8d1f\u8f7d\u672c\u8d28\u662f&#034;\u7b49\u6162\u8bbe\u5907&#034;&#xff0c;\u538b\u529b\u6765\u81ea\u6162\u901f\u78c1\u76d8\/\u7f51\u7edc\u4e0e\u6709\u9650\u5e26\u5bbd&#xff0c;\u89e3\u6cd5\u662f \u7f13\u5b58 &#043; \u6279\u91cf &#043; \u5f02\u6b65 &#043; \u5347\u7ea7\u5b58\u50a8 &#043; \u534f\u8bae\u4f18\u5316\u3002<\/li>\n<li>load average \u540c\u65f6\u542b R \u4e0e D \u4e24\u7c7b&#xff0c;\u5fc5\u987b\u7ed3\u5408 %us\/%sy\/%wa\/%idle \u4e0e iostat \u624d\u80fd\u5b9a\u4f4d\u771f\u6b63\u7684\u74f6\u9888\u3002<\/li>\n<li>\u6392\u969c\u987a\u5e8f&#xff1a;uptime \u2192 top\/vmstat&#xff08;\u533a\u5206 CPU \u8fd8\u662f I\/O&#xff09;\u2192 mpstat\/iostat&#xff08;\u5b9a\u4f4d\u5230\u6838\/\u76d8&#xff09;\u2192 pidstat\/perf\/iotop&#xff08;\u5b9a\u4f4d\u5230\u8fdb\u7a0b\/\u51fd\u6570&#xff09;\u2192 \u9488\u5bf9\u6027\u4f18\u5316\u3002<\/li>\n<p>\u4e00\u53e5\u8bdd&#xff1a;\u5148\u5206\u6e05&#034;\u5728\u7b97&#034;\u8fd8\u662f&#034;\u5728\u7b49&#034;&#xff0c;\u518d\u51b3\u5b9a\u662f\u4f18\u5316 CPU \u8fd8\u662f\u4f18\u5316 I\/O&#xff0c;\u8fd9\u662f\u6240\u6709\u6027\u80fd\u8c03\u4f18\u7684\u8d77\u70b9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CPU \u8d1f\u8f7d\u4e0e I\/O \u8d1f\u8f7d\u8be6\u89e3&#xff1a;\u539f\u7406\u3001\u538b\u529b\u6765\u6e90\u3001\u76d1\u63a7\u4e0e\u8c03\u4f18\u5728\u6027\u80fd\u5de5\u7a0b\u4e2d&#xff0c;\u6211\u4eec\u5e38\u8bf4\\&#8221;CPU \u5bc6\u96c6\u578b\\&#8221;\u7528 CPU \u8d1f\u8f7d\u8861\u91cf\u7cfb\u7edf\u538b\u529b&#xff0c;\\&#8221;I\/O \u5bc6\u96c6\u578b\\&#8221;\u7528 I\/O \u8d1f\u8f7d\u8861\u91cf\u7cfb\u7edf\u538b\u529b\u3002\u672c\u6587\u7cfb\u7edf\u68b3\u7406\u8fd9\u4e24\u7c7b\u8d1f\u8f7d\u5230\u5e95\u6307\u4ec0\u4e48\u64cd\u4f5c\u3001\u4e3a\u4ec0\u4e48\u4f1a\u7ed9\u7cfb\u7edf\u5e26\u6765\u538b\u529b\u3001\u538b\u529b\u8fc7\u5927\u65f6\u5982\u4f55\u89e3\u51b3&#xff0c;\u4ee5\u53ca\u5982\u4f55\u83b7\u53d6\u8fd9\u4e9b\u6307\u6807\u3002\u4e00\u3001\u57fa\u672c\u6982\u5ff5&#xff1a;\u8d1f\u8f7d&#xff08;Load&#xff09;\u5230\u5e95\u662f\u4ec0\u4e48<br \/>\n\u5728 Linux \u4e2d&#xff0c;\\&#8221;\u8d1f\u8f7d\\&#8221;\u6700\u76f4\u89c2\u7684\u4f53\u73b0\u662f <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[11492,679],"topic":[],"class_list":["post-100456","post","type-post","status-publish","format-standard","hentry","category-server","tag-11492","tag-cpu"],"yoast_head":"<!-- This site is optimized with the Yoast SEO 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\u8d1f\u8f7d\u8be6\u89e3&#xff1a;\u539f\u7406\u3001\u538b\u529b\u6765\u6e90\u3001\u76d1\u63a7\u4e0e\u8c03\u4f18\u5728\u6027\u80fd\u5de5\u7a0b\u4e2d&#xff0c;\u6211\u4eec\u5e38\u8bf4&quot;CPU \u5bc6\u96c6\u578b&quot;\u7528 CPU \u8d1f\u8f7d\u8861\u91cf\u7cfb\u7edf\u538b\u529b&#xff0c;&quot;I\/O \u5bc6\u96c6\u578b&quot;\u7528 I\/O \u8d1f\u8f7d\u8861\u91cf\u7cfb\u7edf\u538b\u529b\u3002\u672c\u6587\u7cfb\u7edf\u68b3\u7406\u8fd9\u4e24\u7c7b\u8d1f\u8f7d\u5230\u5e95\u6307\u4ec0\u4e48\u64cd\u4f5c\u3001\u4e3a\u4ec0\u4e48\u4f1a\u7ed9\u7cfb\u7edf\u5e26\u6765\u538b\u529b\u3001\u538b\u529b\u8fc7\u5927\u65f6\u5982\u4f55\u89e3\u51b3&#xff0c;\u4ee5\u53ca\u5982\u4f55\u83b7\u53d6\u8fd9\u4e9b\u6307\u6807\u3002\u4e00\u3001\u57fa\u672c\u6982\u5ff5&#xff1a;\u8d1f\u8f7d&#xff08;Load&#xff09;\u5230\u5e95\u662f\u4ec0\u4e48 \u5728 Linux \u4e2d&#xff0c;&quot;\u8d1f\u8f7d&quot;\u6700\u76f4\u89c2\u7684\u4f53\u73b0\u662f\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/100456.html\" \/>\n<meta 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