{"id":51251,"date":"2024-12-03T14:24:58","date_gmt":"2024-12-03T06:24:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/51251\/"},"modified":"2024-12-03T14:24:58","modified_gmt":"2024-12-03T06:24:58","slug":"%e5%a6%82%e4%bd%95%e8%bf%9b%e8%a1%8clinux%e7%b3%bb%e7%bb%9f%e7%9a%84%e7%b3%bb%e7%bb%9f%e8%b0%83%e4%bc%98%e5%92%8c%e6%80%a7%e8%83%bd%e6%b5%8b%e8%af%95-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/51251\/","title":{"rendered":"\u5982\u4f55\u8fdb\u884cLinux\u7cfb\u7edf\u7684\u7cfb\u7edf\u8c03\u4f18\u548c\u6027\u80fd\u6d4b\u8bd5"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u8fdb\u884cLinux\u7cfb\u7edf\u7684\u7cfb\u7edf\u8c03\u4f18\u548c\u6027\u80fd\u6d4b\u8bd5<\/h1>\n<p>\u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u7c73\u4e91\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! \u4e0b\u9762\u5c31\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n<p>\u64cd\u4f5c\u7cfb\u7edf\u7684\u6027\u80fd\u4f18\u5316\u662f\u4fdd\u8bc1\u7cfb\u7edf\u9ad8\u6548\u8fd0\u884c\u7684\u5173\u952e\u4e4b\u4e00\u3002\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5404\u79cd\u65b9\u6cd5\u8fdb\u884c\u6027\u80fd\u8c03\u4f18\u548c\u6d4b\u8bd5\uff0c\u4ee5\u786e\u4fdd\u7cfb\u7edf\u7684\u6700\u4f73\u6027\u80fd\u8868\u73b0\u3002<\/p>\n<p>\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u8fdb\u884cLinux\u7cfb\u7edf\u7684\u7cfb\u7edf\u8c03\u4f18\u548c\u6027\u80fd\u6d4b\u8bd5\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u5177\u4f53\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p>\u4e00\u3001\u7cfb\u7edf\u8c03\u4f18<br \/>\u7cfb\u7edf\u8c03\u4f18\u662f\u901a\u8fc7\u8c03\u6574\u7cfb\u7edf\u7684\u5404\u9879\u53c2\u6570\uff0c\u6765\u4f18\u5316\u7cfb\u7edf\u7684\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u7cfb\u7edf\u8c03\u4f18\u65b9\u6cd5\uff1a<\/p>\n<p>1.\u4fee\u6539\u5185\u6838\u53c2\u6570<\/p>\n<p>Linux\u7cfb\u7edf\u7684\u5185\u6838\u53c2\u6570\u63a7\u5236\u7740\u7cfb\u7edf\u8fd0\u884c\u7684\u5404\u79cd\u884c\u4e3a\u548c\u7279\u6027\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u5185\u6838\u53c2\u6570\u6765\u4f18\u5316\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 sysctl \u547d\u4ee4\u6765\u4fee\u6539\u5185\u6838\u53c2\u6570\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>sysctl -w net.ipv4.tcp_fin_timeout=30\nsysctl -w net.core.netdev_max_backlog=10000<\/pre>\n<p>2.\u4fee\u6539ulimit\u9650\u5236<\/p>\n<p>ulimit \u662f\u7528\u6765\u9650\u5236\u7528\u6237\u8fdb\u7a0b\u8d44\u6e90\u4f7f\u7528\u7684\u4e00\u79cd\u673a\u5236\uff0c\u5305\u62ec CPU \u65f6\u95f4\u3001\u5185\u5b58\u3001\u6587\u4ef6\u63cf\u8ff0\u7b26\u7b49\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539 ulimit \u7684\u503c\u6765\u4f18\u5316\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u68c0\u67e5\u5f53\u524d\u7cfb\u7edf\u7684\u6700\u5927\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\uff1a<\/p>\n<pre>ulimit -n<\/pre>\n<p>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u4fee\u6539\u6700\u5927\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\u7684\u503c\uff1a<\/p>\n<pre>ulimit -n 65535<\/pre>\n<p>3.\u4f18\u5316\u78c1\u76d8I\/O<\/p>\n<p>\u78c1\u76d8I\/O\u4e5f\u662f\u7cfb\u7edf\u6027\u80fd\u7684\u5173\u952e\u56e0\u7d20\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4f18\u5316\u78c1\u76d8\u8bfb\u5199\u6765\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\u6765\u4f7f\u7528\u542f\u7528I\/O\u8c03\u5ea6\u7b97\u6cd5\uff1a<\/p>\n<pre>echo deadline &gt; \/sys\/block\/sda\/queue\/scheduler<\/pre>\n<p>4.\u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177<\/p>\n<p>\u6027\u80fd\u5206\u6790\u5de5\u5177\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u627e\u5230\u7cfb\u7edf\u4e2d\u7684\u74f6\u9888\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5de5\u5177\u6765\u5206\u6790\u7cfb\u7edf\u6027\u80fd\uff0c\u4ee5\u4fbf\u8bc6\u522b\u4f18\u5316\u7684\u91cd\u70b9\u3002<\/p>\n<p>\u5176\u4e2d\uff0c\u4e00\u4e9b\u5e38\u89c1\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\u6709\uff1astrace\u3001tcpdump\u3001perf\u7b49\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528perf\u5de5\u5177\u6765\u67e5\u627e\u7cfb\u7edf\u74f6\u9888\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>perf record -e sched:sched_process_exec -a -g -- sleep 10\nperf report<\/pre>\n<p>\u4e8c\u3001\u6027\u80fd\u6d4b\u8bd5<br \/>\u6027\u80fd\u6d4b\u8bd5\u662f\u901a\u8fc7\u6a21\u62df\u7cfb\u7edf\u8d1f\u8f7d\u6765\u6d4b\u91cf\u7cfb\u7edf\u7684\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u6027\u80fd\u6d4b\u8bd5\u65b9\u6cd5\uff1a<\/p>\n<p>1.\u538b\u529b\u6d4b\u8bd5<\/p>\n<p>\u538b\u529b\u6d4b\u8bd5\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u8bc4\u4f30\u7cfb\u7edf\u7684\u8d1f\u8f7d\u80fd\u529b\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\u6765\u8fdb\u884cApache\u7684\u538b\u529b\u6d4b\u8bd5\uff1a<\/p>\n<pre>ab -n 10000 -c 1000 http:\/\/www.example.com<\/pre>\n<p>2.\u7f51\u7edc\u6d4b\u8bd5<\/p>\n<p>\u7f51\u7edc\u6d4b\u8bd5\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u8bc4\u4f30\u7f51\u7edc\u6027\u80fd\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\u6765\u8fdb\u884c\u7f51\u7edc\u6d4b\u8bd5\uff1a<\/p>\n<pre>iperf -s       # Start the server\niperf -c 10.0.0.3 -t 30 -P 8   # Run the client for 30 seconds with 8 parallel connections<\/pre>\n<p>3.\u6570\u636e\u5e93\u6d4b\u8bd5<\/p>\n<p>\u6570\u636e\u5e93\u6d4b\u8bd5\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u8bc4\u4f30\u6570\u636e\u5e93\u6027\u80fd\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\u6765\u8fdb\u884c\u6570\u636e\u5e93\u6d4b\u8bd5\uff1a<\/p>\n<pre>sysbench --test=oltp --db-driver=mysql --mysql-db=test --mysql-user=root prepare\nsysbench --test=oltp --db-driver=mysql --mysql-db=test --mysql-user=root --max-time=60 --oltp-table-size=1000000 --max-requests=0 --num-threads=8 run<\/pre>\n<p>\u4ee5\u4e0a\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u7cfb\u7edf\u8c03\u4f18\u548c\u6027\u80fd\u6d4b\u8bd5\u65b9\u6cd5\u3002\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u7ed3\u5408\u7cfb\u7edf\u5b9e\u9645\u60c5\u51b5\u8fdb\u884c\u8c03\u4f18\u548c\u6d4b\u8bd5\uff0c\u5e76\u6839\u636e\u7ed3\u679c\u8fdb\u884c\u76f8\u5e94\u7684\u4f18\u5316\u3002<\/p>\n<p>\u6587\u4e2d\u5173\u4e8eLinux,\u6027\u80fd\u6d4b\u8bd5,\u8c03\u4f18\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300a\u5982\u4f55\u8fdb\u884cLinux\u7cfb\u7edf\u7684\u7cfb\u7edf\u8c03\u4f18\u548c\u6027\u80fd\u6d4b\u8bd5\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n<dl>\n<dt><\/dt>\n<dd>\n   \u5982\u4f55\u8fdb\u884cLinux\u7cfb\u7edf\u7684\u786c\u4ef6\u76d1\u63a7\u548c\u6545\u969c\u5904\u7406\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u8fdb\u884cLinux\u7cfb\u7edf\u7684\u7cfb\u7edf\u8c03\u4f18\u548c\u6027\u80fd\u6d4b\u8bd5 \u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u7c73\u4e91\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! \u4e0b\u9762\u5c31\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01 \u64cd\u4f5c\u7cfb\u7edf\u7684\u6027\u80fd\u4f18\u5316\u662f\u4fdd\u8bc1\u7cfb\u7edf\u9ad8\u6548\u8fd0\u884c\u7684\u5173\u952e\u4e4b\u4e00\u3002\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5404\u79cd\u65b9\u6cd5\u8fdb\u884c\u6027\u80fd\u8c03\u4f18\u548c\u6d4b\u8bd5\uff0c\u4ee5\u786e\u4fdd\u7cfb\u7edf\u7684\u6700\u4f73\u6027\u80fd\u8868\u73b0\u3002 \u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u8fdb\u884cLinux\u7cfb\u7edf\u7684\u7cfb\u7edf\u8c03\u4f18\u548c\u6027\u80fd\u6d4b\u8bd5\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u5177\u4f53\u4ee3\u7801\u793a\u4f8b\u3002 \u4e00\u3001\u7cfb\u7edf\u8c03\u4f18\u7cfb\u7edf\u8c03\u4f18\u662f\u901a\u8fc7\u8c03\u6574\u7cfb\u7edf\u7684\u5404\u9879\u53c2\u6570\uff0c\u6765\u4f18\u5316\u7cfb\u7edf\u7684\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u7cfb\u7edf\u8c03\u4f18\u65b9\u6cd5\uff1a 1.\u4fee\u6539\u5185\u6838\u53c2\u6570 Linux\u7cfb\u7edf\u7684\u5185\u6838\u53c2\u6570\u63a7\u5236\u7740\u7cfb\u7edf\u8fd0\u884c\u7684\u5404\u79cd\u884c\u4e3a\u548c\u7279\u6027\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u5185\u6838\u53c2\u6570\u6765\u4f18\u5316\u7cfb\u7edf\u7684\u6027\u80fd\u3002 \u53ef\u4ee5\u4f7f\u7528 sysctl \u547d\u4ee4\u6765\u4fee\u6539\u5185\u6838\u53c2\u6570\uff0c\u4f8b\u5982\uff1a sysctl -w net.ipv4.tcp_fin_timeout=30 sysctl -w net.core.netdev_max_backlog=10000 2.\u4fee\u6539ulimit\u9650\u5236 ulimit \u662f\u7528\u6765\u9650\u5236\u7528\u6237\u8fdb\u7a0b\u8d44\u6e90\u4f7f\u7528\u7684\u4e00\u79cd\u673a\u5236\uff0c\u5305\u62ec CPU \u65f6\u95f4\u3001\u5185\u5b58\u3001\u6587\u4ef6\u63cf\u8ff0\u7b26\u7b49\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539 ulimit \u7684\u503c\u6765\u4f18\u5316\u7cfb\u7edf\u7684\u6027\u80fd\u3002 \u4f8b\u5982\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u68c0\u67e5\u5f53\u524d\u7cfb\u7edf\u7684\u6700\u5927\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\uff1a ulimit -n \u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u4fee\u6539\u6700\u5927\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u91cf\u7684\u503c\uff1a ulimit -n 65535 3.\u4f18\u5316\u78c1\u76d8I\/O \u78c1\u76d8I\/O\u4e5f\u662f\u7cfb\u7edf\u6027\u80fd\u7684\u5173\u952e\u56e0\u7d20\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4f18\u5316\u78c1\u76d8\u8bfb\u5199\u6765\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u3002 \u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\u6765\u4f7f\u7528\u542f\u7528I\/O\u8c03\u5ea6\u7b97\u6cd5\uff1a echo deadline &gt; \/sys\/block\/sda\/queue\/scheduler 4.\u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177 \u6027\u80fd\u5206\u6790\u5de5\u5177\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u627e\u5230\u7cfb\u7edf\u4e2d\u7684\u74f6\u9888\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5de5\u5177\u6765\u5206\u6790\u7cfb\u7edf\u6027\u80fd\uff0c\u4ee5\u4fbf\u8bc6\u522b\u4f18\u5316\u7684\u91cd\u70b9\u3002 \u5176\u4e2d\uff0c\u4e00\u4e9b\u5e38\u89c1\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\u6709\uff1astrace\u3001tcpdump\u3001perf\u7b49\u3002 \u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528perf\u5de5\u5177\u6765\u67e5\u627e\u7cfb\u7edf\u74f6\u9888\u7684\u793a\u4f8b\u4ee3\u7801\uff1a perf record -e sched:sched_process_exec -a -g &#8212; sleep 10 perf report \u4e8c\u3001\u6027\u80fd\u6d4b\u8bd5\u6027\u80fd\u6d4b\u8bd5\u662f\u901a\u8fc7\u6a21\u62df\u7cfb\u7edf\u8d1f\u8f7d\u6765\u6d4b\u91cf\u7cfb\u7edf\u7684\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u6027\u80fd\u6d4b\u8bd5\u65b9\u6cd5\uff1a 1.\u538b\u529b\u6d4b\u8bd5 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