{"id":16768,"date":"2024-11-18T11:24:48","date_gmt":"2024-11-18T03:24:48","guid":{"rendered":"https:\/\/fwq.ai\/blog\/16768\/"},"modified":"2024-11-18T11:24:48","modified_gmt":"2024-11-18T03:24:48","slug":"%e9%ba%92%e9%ba%9f%e6%93%8d%e4%bd%9c%e7%b3%bb%e7%bb%9f%e5%a6%82%e4%bd%95%e8%bf%9b%e8%a1%8c%e7%b3%bb%e7%bb%9f%e6%80%a7%e8%83%bd%e7%9a%84%e7%9b%91%e6%8e%a7%e5%92%8c%e4%bc%98%e5%8c%96%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/16768\/","title":{"rendered":"\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u5982\u4f55\u8fdb\u884c\u7cfb\u7edf\u6027\u80fd\u7684\u76d1\u63a7\u548c\u4f18\u5316\uff1f"},"content":{"rendered":"<p>\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u662f\u534e\u4e3a\u81ea\u4e3b\u7814\u53d1\u7684\u4e00\u6b3e\u9ad8\u6027\u80fd\u3001\u9ad8\u53ef\u9760\u6027\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u534e\u4e3a\u8bbe\u5907\u548c\u89e3\u51b3\u65b9\u6848\u4e2d\u3002\u4e3a\u4e86\u786e\u4fdd\u7cfb\u7edf\u7684\u8fd0\u884c\u6548\u7387\u548c\u7a33\u5b9a\u6027\uff0c\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7684\u7cfb\u7edf\u6027\u80fd\u76d1\u63a7\u548c\u4f18\u5316\u529f\u80fd\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u7684\u7cfb\u7edf\u6027\u80fd\u76d1\u63a7\u5de5\u5177\u548c\u4f18\u5316\u65b9\u6cd5\uff0c\u5e76\u901a\u8fc7\u4ee3\u7801\u793a\u4f8b\u8fdb\u884c\u8bf4\u660e\u3002<\/p>\n<ol>\n<li>\u7cfb\u7edf\u6027\u80fd\u76d1\u63a7\u5de5\u5177<br \/>\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u4e86\u591a\u79cd\u7cfb\u7edf\u6027\u80fd\u76d1\u63a7\u5de5\u5177\uff0c\u53ef\u4ee5\u5b9e\u65f6\u76d1\u6d4b\u7cfb\u7edf\u7684\u8fd0\u884c\u72b6\u6001\u548c\u6027\u80fd\u6307\u6807\u3002\u5176\u4e2d\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u5e38\u7528\u7684\u5de5\u5177\uff1a<\/li>\n<\/ol>\n<p>1.1 Top\u547d\u4ee4<br \/>Top\u547d\u4ee4\u662f\u4e00\u4e2a\u5b9e\u65f6\u76d1\u63a7\u7cfb\u7edf\u6027\u80fd\u7684\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u53ef\u4ee5\u663e\u793a\u7cfb\u7edf\u7684 CPU \u4f7f\u7528\u7387\u3001\u5185\u5b58\u4f7f\u7528\u7387\u3001\u8fdb\u7a0b\u72b6\u6001\u7b49\u3002\u901a\u8fc7\u8f93\u5165top\u547d\u4ee4\u53ef\u4ee5\u67e5\u770b\u7cfb\u7edf\u7684\u6574\u4f53\u6027\u80fd\u60c5\u51b5\uff0c\u5e76\u53ef\u4ee5\u6309\u7167\u5404\u4e2a\u6307\u6807\u8fdb\u884c\u6392\u5e8f\u3002\u4e0b\u9762\u662f\u4f7f\u7528top\u547d\u4ee4\u67e5\u770b\u7cfb\u7edfCPU\u4f7f\u7528\u7387\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>$ top<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>1.2 SAR\u547d\u4ee4<br \/>SAR\u547d\u4ee4\u662f\u7cfb\u7edf\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u53ef\u4ee5\u6536\u96c6\u548c\u62a5\u544a\u7cfb\u7edf\u7684\u5404\u79cd\u6027\u80fd\u6570\u636e\uff0c\u5982CPU\u4f7f\u7528\u7387\u3001\u5185\u5b58\u4f7f\u7528\u7387\u3001\u78c1\u76d8IO\u3001\u7f51\u7edc\u5e26\u5bbd\u7b49\u3002\u4e0b\u9762\u662f\u4f7f\u7528SAR\u547d\u4ee4\u67e5\u770bCPU\u4f7f\u7528\u7387\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>$ sar -u<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>1.3 Perf\u5de5\u5177<br \/>Perf\u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u53ef\u4ee5\u5bf9\u7cfb\u7edf\u8fdb\u884c\u5168\u9762\u7684\u6027\u80fd\u5206\u6790\u548c\u8c03\u4f18\u3002\u5b83\u53ef\u4ee5\u76d1\u63a7CPU\u3001\u5185\u5b58\u3001\u78c1\u76d8IO\u3001\u7f51\u7edc\u7b49\u5404\u4e2a\u65b9\u9762\u7684\u6027\u80fd\u6307\u6807\uff0c\u5e76\u751f\u6210\u8be6\u7ec6\u7684\u62a5\u544a\u3002\u4e0b\u9762\u662f\u4f7f\u7528perf\u547d\u4ee4\u76d1\u63a7\u7cfb\u7edfCPU\u4f7f\u7528\u7387\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>$ perf stat -e cpu-cycles -a sleep 10<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u7cfb\u7edf\u6027\u80fd\u4f18\u5316\u65b9\u6cd5<br \/>\u9664\u4e86\u7cfb\u7edf\u6027\u80fd\u76d1\u63a7\u5de5\u5177\uff0c\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u8fd8\u63d0\u4f9b\u4e86\u4e00\u4e9b\u6027\u80fd\u4f18\u5316\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5e2e\u52a9\u7528\u6237\u63d0\u5347\u7cfb\u7edf\u7684\u8fd0\u884c\u6548\u7387\u548c\u54cd\u5e94\u901f\u5ea6\u3002\u4e0b\u9762\u4ecb\u7ecd\u51e0\u79cd\u5e38\u7528\u7684\u6027\u80fd\u4f18\u5316\u65b9\u6cd5\u3002<\/li>\n<\/ol>\n<p>2.1 \u8fdb\u7a0b\u4f18\u5148\u7ea7\u8c03\u6574<br \/>\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u7684\u8fdb\u7a0b\u8c03\u5ea6\u5668\u53ef\u4ee5\u6839\u636e\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\u6765\u5206\u914dCPU\u8d44\u6e90\uff0c\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\u6765\u8c03\u6574\u8fdb\u7a0b\u7684\u6267\u884c\u987a\u5e8f\u548c\u5360\u7528CPU\u65f6\u95f4\u7684\u6bd4\u4f8b\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u8c03\u6574\u8fdb\u7a0b\u4f18\u5148\u7ea7\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>$ renice -n -10 -p &lt;pid&gt;&lt;\/pid&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>2.2 \u7f13\u5b58\u7ba1\u7406<br \/>\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u7f13\u5b58\u7ba1\u7406\u673a\u5236\uff0c\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574\u7f13\u5b58\u673a\u5236\u7684\u53c2\u6570\u6765\u4f18\u5316\u7cfb\u7edf\u7684IO\u6027\u80fd\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u8c03\u6574\u7f13\u5b58\u53c2\u6570\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>$ echo 2048 &amp;gt; \/proc\/sys\/vm\/dirty_background_bytes<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>2.3 \u7cfb\u7edf\u5185\u6838\u4f18\u5316<br \/>\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u6838\u662f\u9ad8\u5ea6\u53ef\u5b9a\u5236\u7684\uff0c\u7528\u6237\u53ef\u4ee5\u6839\u636e\u7cfb\u7edf\u7684\u9700\u6c42\u5bf9\u5185\u6838\u8fdb\u884c\u4f18\u5316\u3002\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u5185\u6838\u7684\u914d\u7f6e\u6587\u4ef6\u6765\u8c03\u6574\u5185\u6838\u53c2\u6570\uff0c\u4ee5\u63d0\u5347\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4fee\u6539\u5185\u6838\u53c2\u6570\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>$ echo 1000000 &amp;gt; \/proc\/sys\/kernel\/threads-max<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u901a\u8fc7\u7cfb\u7edf\u6027\u80fd\u76d1\u63a7\u5de5\u5177\u548c\u6027\u80fd\u4f18\u5316\u65b9\u6cd5\uff0c\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u53ef\u4ee5\u5bf9\u7cfb\u7edf\u7684\u8fd0\u884c\u72b6\u6001\u548c\u6027\u80fd\u6307\u6807\u8fdb\u884c\u5b9e\u65f6\u76d1\u63a7\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u4f18\u5316\u65b9\u6cd5\u3002\u5728\u5b9e\u9645\u7684\u7cfb\u7edf\u8fd0\u7ef4\u548c\u5f00\u53d1\u5de5\u4f5c\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u9009\u62e9\u9002\u5408\u7684\u5de5\u5177\u548c\u65b9\u6cd5\uff0c\u5bf9\u7cfb\u7edf\u8fdb\u884c\u6027\u80fd\u76d1\u63a7\u548c\u4f18\u5316\uff0c\u4ee5\u63d0\u5347\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u5982\u4f55\u8fdb\u884c\u7cfb\u7edf\u6027\u80fd\u7684\u76d1\u63a7\u548c\u4f18\u5316\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u662f\u534e\u4e3a\u81ea\u4e3b\u7814\u53d1\u7684\u4e00\u6b3e\u9ad8\u6027\u80fd\u3001\u9ad8\u53ef\u9760\u6027\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u534e\u4e3a\u8bbe\u5907\u548c\u89e3\u51b3\u65b9\u6848\u4e2d\u3002\u4e3a\u4e86\u786e\u4fdd\u7cfb\u7edf\u7684\u8fd0\u884c\u6548\u7387\u548c\u7a33\u5b9a\u6027\uff0c\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7684\u7cfb\u7edf\u6027\u80fd\u76d1\u63a7\u548c\u4f18\u5316\u529f\u80fd\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u7684\u7cfb\u7edf\u6027\u80fd\u76d1\u63a7\u5de5\u5177\u548c\u4f18\u5316\u65b9\u6cd5\uff0c\u5e76\u901a\u8fc7\u4ee3\u7801\u793a\u4f8b\u8fdb\u884c\u8bf4\u660e\u3002 \u7cfb\u7edf\u6027\u80fd\u76d1\u63a7\u5de5\u5177\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u4e86\u591a\u79cd\u7cfb\u7edf\u6027\u80fd\u76d1\u63a7\u5de5\u5177\uff0c\u53ef\u4ee5\u5b9e\u65f6\u76d1\u6d4b\u7cfb\u7edf\u7684\u8fd0\u884c\u72b6\u6001\u548c\u6027\u80fd\u6307\u6807\u3002\u5176\u4e2d\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u5e38\u7528\u7684\u5de5\u5177\uff1a 1.1 Top\u547d\u4ee4Top\u547d\u4ee4\u662f\u4e00\u4e2a\u5b9e\u65f6\u76d1\u63a7\u7cfb\u7edf\u6027\u80fd\u7684\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u53ef\u4ee5\u663e\u793a\u7cfb\u7edf\u7684 CPU \u4f7f\u7528\u7387\u3001\u5185\u5b58\u4f7f\u7528\u7387\u3001\u8fdb\u7a0b\u72b6\u6001\u7b49\u3002\u901a\u8fc7\u8f93\u5165top\u547d\u4ee4\u53ef\u4ee5\u67e5\u770b\u7cfb\u7edf\u7684\u6574\u4f53\u6027\u80fd\u60c5\u51b5\uff0c\u5e76\u53ef\u4ee5\u6309\u7167\u5404\u4e2a\u6307\u6807\u8fdb\u884c\u6392\u5e8f\u3002\u4e0b\u9762\u662f\u4f7f\u7528top\u547d\u4ee4\u67e5\u770b\u7cfb\u7edfCPU\u4f7f\u7528\u7387\u7684\u793a\u4f8b\u4ee3\u7801\uff1a $ top \u767b\u5f55\u540e\u590d\u5236 1.2 SAR\u547d\u4ee4SAR\u547d\u4ee4\u662f\u7cfb\u7edf\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u53ef\u4ee5\u6536\u96c6\u548c\u62a5\u544a\u7cfb\u7edf\u7684\u5404\u79cd\u6027\u80fd\u6570\u636e\uff0c\u5982CPU\u4f7f\u7528\u7387\u3001\u5185\u5b58\u4f7f\u7528\u7387\u3001\u78c1\u76d8IO\u3001\u7f51\u7edc\u5e26\u5bbd\u7b49\u3002\u4e0b\u9762\u662f\u4f7f\u7528SAR\u547d\u4ee4\u67e5\u770bCPU\u4f7f\u7528\u7387\u7684\u793a\u4f8b\u4ee3\u7801\uff1a $ sar -u \u767b\u5f55\u540e\u590d\u5236 1.3 Perf\u5de5\u5177Perf\u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u53ef\u4ee5\u5bf9\u7cfb\u7edf\u8fdb\u884c\u5168\u9762\u7684\u6027\u80fd\u5206\u6790\u548c\u8c03\u4f18\u3002\u5b83\u53ef\u4ee5\u76d1\u63a7CPU\u3001\u5185\u5b58\u3001\u78c1\u76d8IO\u3001\u7f51\u7edc\u7b49\u5404\u4e2a\u65b9\u9762\u7684\u6027\u80fd\u6307\u6807\uff0c\u5e76\u751f\u6210\u8be6\u7ec6\u7684\u62a5\u544a\u3002\u4e0b\u9762\u662f\u4f7f\u7528perf\u547d\u4ee4\u76d1\u63a7\u7cfb\u7edfCPU\u4f7f\u7528\u7387\u7684\u793a\u4f8b\u4ee3\u7801\uff1a $ perf stat -e cpu-cycles -a sleep 10 \u767b\u5f55\u540e\u590d\u5236 \u7cfb\u7edf\u6027\u80fd\u4f18\u5316\u65b9\u6cd5\u9664\u4e86\u7cfb\u7edf\u6027\u80fd\u76d1\u63a7\u5de5\u5177\uff0c\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u8fd8\u63d0\u4f9b\u4e86\u4e00\u4e9b\u6027\u80fd\u4f18\u5316\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5e2e\u52a9\u7528\u6237\u63d0\u5347\u7cfb\u7edf\u7684\u8fd0\u884c\u6548\u7387\u548c\u54cd\u5e94\u901f\u5ea6\u3002\u4e0b\u9762\u4ecb\u7ecd\u51e0\u79cd\u5e38\u7528\u7684\u6027\u80fd\u4f18\u5316\u65b9\u6cd5\u3002 2.1 \u8fdb\u7a0b\u4f18\u5148\u7ea7\u8c03\u6574\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u7684\u8fdb\u7a0b\u8c03\u5ea6\u5668\u53ef\u4ee5\u6839\u636e\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\u6765\u5206\u914dCPU\u8d44\u6e90\uff0c\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u8fdb\u7a0b\u7684\u4f18\u5148\u7ea7\u6765\u8c03\u6574\u8fdb\u7a0b\u7684\u6267\u884c\u987a\u5e8f\u548c\u5360\u7528CPU\u65f6\u95f4\u7684\u6bd4\u4f8b\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u8c03\u6574\u8fdb\u7a0b\u4f18\u5148\u7ea7\u7684\u793a\u4f8b\u4ee3\u7801\uff1a $ renice -n -10 -p &lt;pid&gt;&lt;\/pid&gt; \u767b\u5f55\u540e\u590d\u5236 2.2 \u7f13\u5b58\u7ba1\u7406\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u7f13\u5b58\u7ba1\u7406\u673a\u5236\uff0c\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574\u7f13\u5b58\u673a\u5236\u7684\u53c2\u6570\u6765\u4f18\u5316\u7cfb\u7edf\u7684IO\u6027\u80fd\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u8c03\u6574\u7f13\u5b58\u53c2\u6570\u7684\u793a\u4f8b\u4ee3\u7801\uff1a $ echo 2048 &amp;gt; \/proc\/sys\/vm\/dirty_background_bytes \u767b\u5f55\u540e\u590d\u5236 2.3 \u7cfb\u7edf\u5185\u6838\u4f18\u5316\u9e92\u9e9f\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u6838\u662f\u9ad8\u5ea6\u53ef\u5b9a\u5236\u7684\uff0c\u7528\u6237\u53ef\u4ee5\u6839\u636e\u7cfb\u7edf\u7684\u9700\u6c42\u5bf9\u5185\u6838\u8fdb\u884c\u4f18\u5316\u3002\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u5185\u6838\u7684\u914d\u7f6e\u6587\u4ef6\u6765\u8c03\u6574\u5185\u6838\u53c2\u6570\uff0c\u4ee5\u63d0\u5347\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4fee\u6539\u5185\u6838\u53c2\u6570\u7684\u793a\u4f8b\u4ee3\u7801\uff1a $ echo 1000000 &amp;gt; \/proc\/sys\/kernel\/threads-max \u767b\u5f55\u540e\u590d\u5236 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