{"id":32845,"date":"2026-08-26T12:00:00","date_gmt":"2026-08-26T04:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=32845"},"modified":"2026-08-26T10:45:39","modified_gmt":"2026-08-26T02:45:39","slug":"sysctl-server-network-practical","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/sysctl-server-network-practical\/","title":{"rendered":"sysctl \u5185\u6838\u53c2\u6570\u8c03\u4f18\uff1a\u670d\u52a1\u5668\u7f51\u7edc\u4e0e\u5185\u5b58\u914d\u7f6e\u5b9e\u6218"},"content":{"rendered":"<p>\u65b0\u90e8\u7f72\u7684\u670d\u52a1\u5668\u9ed8\u8ba4\u53c2\u6570\u53ea\u6c42&#8221;\u901a\u7528\u53ef\u7528&#8221;\uff0c\u4e0d\u4f1a\u9488\u5bf9\u4f60\u7684\u4e1a\u52a1\u573a\u666f\u505a\u4f18\u5316\u3002\u5f53\u9ad8\u5e76\u53d1\u8bf7\u6c42\u6d8c\u8fdb\u6765\uff0c\u51fa\u73b0\u8fde\u63a5\u8d85\u65f6\u3001\u6587\u4ef6\u53e5\u67c4\u8017\u5c3d\u3001\u5185\u5b58\u6ea2\u51fa\u65f6\uff0c\u5f88\u591a\u4eba\u7684\u7b2c\u4e00\u53cd\u5e94\u662f\u52a0\u5185\u5b58\u6216\u6362\u673a\u5668\uff0c\u5176\u5b9e\u5148\u8c03\u4e00\u8c03\u5185\u6838\u53c2\u6570\u5f80\u5f80\u66f4\u7701\u94b1\u4e5f\u66f4\u6709\u6548\u3002\u8fd9\u7bc7\u6307\u5357\u6559\u4f60\u7528 sysctl\uff08Linux \u5185\u6838\u53c2\u6570\u914d\u7f6e\u547d\u4ee4\uff0c\u7528\u4e8e\u5728\u8fd0\u884c\u65f6\u67e5\u770b\u548c\u4fee\u6539\u5185\u6838\u884c\u4e3a\uff09\u6765\u8c03\u4f18\u670d\u52a1\u5668\u7684\u7f51\u7edc\u4e0e\u5185\u5b58\u53c2\u6570\uff0c\u8ba9 TCP \u8fde\u63a5\u66f4\u7a33\u5b9a\u3001\u6587\u4ef6\u53e5\u67c4\u591f\u7528\u3001\u5185\u5b58\u66f4\u9ad8\u6548\uff0c\u5e2e\u52a9\u4f60\u4e0d\u7528\u6362\u786c\u4ef6\u5c31\u80fd\u625b\u4f4f\u66f4\u5927\u7684\u5e76\u53d1\u3002\u4e0b\u9762\u4ece sysctl \u7684\u57fa\u672c\u7528\u6cd5\u8bb2\u8d77\uff0c\u9010\u6b65\u843d\u5230\u4e00\u7ec4\u751f\u4ea7\u53ef\u7528\u7684\u63a8\u8350\u53c2\u6570\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/sysctl-server-network-practical-cover.webp\" alt=\"sysctl \u5185\u6838\u53c2\u6570\u8c03\u4f18\u5b9e\u6218\u5c01\u9762\u56fe\" loading=\"lazy\" \/><\/p>\n<h2>sysctl \u662f\u4ec0\u4e48\u4e0e\u57fa\u672c\u7528\u6cd5<\/h2>\n<p>Linux \u5185\u6838\u7684\u8fd0\u884c\u884c\u4e3a\u7531\u5927\u91cf\u5185\u6838\u53c2\u6570\u63a7\u5236\uff0csysctl \u5c31\u662f\u8bfb\u53d6\u548c\u4e34\u65f6\u4fee\u6539\u8fd9\u4e9b\u53c2\u6570\u7684\u63a5\u53e3\u3002\u5e38\u7528\u7684\u914d\u7f6e\u6587\u4ef6\u662f <code>\/etc\/sysctl.conf<\/code>\uff0c\u628a\u53c2\u6570\u5199\u5728\u8fd9\u91cc\u53ef\u4ee5\u5728\u5f00\u673a\u65f6\u81ea\u52a8\u751f\u6548\u3002\u67e5\u770b\u5f53\u524d\u67d0\u4e2a\u53c2\u6570\u7684\u503c\uff0c\u7528 <code>sysctl &lt;\u53c2\u6570\u540d&gt;<\/code>\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">\n # \u67e5\u770b\u5f53\u524d TCP \u6700\u5927\u7b49\u5f85\u8fde\u63a5\u6570\nsysctl net.core.somaxconn\n # \u67e5\u770b\u6587\u4ef6\u53e5\u67c4\u4e0a\u9650\nsysctl fs.file-max\n<\/pre>\n<p>\u4e34\u65f6\u4fee\u6539\u4e00\u4e2a\u53c2\u6570\u7528 <code>sysctl -w \u53c2\u6570\u540d=\u503c<\/code>\uff0c\u4f46\u4e34\u65f6\u4fee\u6539\u91cd\u542f\u540e\u4f1a\u4e22\u5931\uff0c\u6b63\u5f0f\u73af\u5883\u5e94\u5199\u8fdb\u914d\u7f6e\u6587\u4ef6\u3002\u4fee\u6539 <code>\/etc\/sysctl.conf<\/code> \u540e\u7528 <code>sysctl -p<\/code> \u7acb\u5373\u5e94\u7528\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">\n # \u5e94\u7528 \/etc\/sysctl.conf \u4e2d\u7684\u5168\u90e8\u53c2\u6570\nsysctl -p\n<\/pre>\n<p><code>-p<\/code> \u4f1a\u91cd\u65b0\u8bfb\u53d6\u914d\u7f6e\u6587\u4ef6\u5e76\u5e94\u7528\u6240\u6709\u53d8\u66f4\uff0c\u8fd9\u662f\u8c03\u4f18\u540e\u8ba9\u53c2\u6570\u7acb\u523b\u751f\u6548\u7684\u6807\u51c6\u505a\u6cd5\u3002\u9700\u8981\u6ce8\u610f\uff0c\u67d0\u4e9b\u53c2\u6570\u53ea\u8bfb\u6216\u5728\u8fd0\u884c\u65f6\u4e0d\u80fd\u4fee\u6539\uff0c\u9047\u5230&#8221;Read-only file system&#8221;\u6216&#8221;Operation not permitted&#8221;\u63d0\u793a\u65f6\uff0c\u8bf4\u660e\u8be5\u53c2\u6570\u4e0d\u652f\u6301\u8fd0\u884c\u65f6\u4fee\u6539\uff0c\u5c5e\u4e8e\u6b63\u5e38\u60c5\u51b5\u3002<\/p>\n<h2>\u7f51\u7edc\u53c2\u6570\uff1a\u63d0\u5347 TCP \u541e\u5410\u4e0e\u5e76\u53d1<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/sysctl-network-parameter-tuning.webp\" alt=\"\u7f51\u7edc\u53c2\u6570\u8c03\u4f18\u6269\u5927\u5e76\u53d1\u8fde\u63a5\u5bb9\u91cf\u793a\u610f\u56fe\" loading=\"lazy\" \/><\/p>\n<p>\u7f51\u7edc\u53c2\u6570\u662f\u5e76\u53d1\u573a\u666f\u4e0b\u6700\u503c\u5f97\u8c03\u4f18\u7684\u90e8\u5206\u3002\u9ad8\u5e76\u53d1\u7ad9\u70b9\u6700\u5e38\u89c1\u7684\u74f6\u9888\u4e4b\u4e00\u662f TCP \u8fde\u63a5\u961f\u5217\u4e0d\u591f\u6df1\uff0c\u65b0\u8fde\u63a5\u88ab\u5185\u6838\u76f4\u63a5\u4e22\u5f03\uff0c\u8868\u73b0\u4e3a\u8bf7\u6c42\u5076\u53d1\u8d85\u65f6\u3002\u4e0b\u9762\u662f\u4e00\u7ec4\u5e38\u7528\u7684\u7f51\u7edc\u4f18\u5316\u53c2\u6570\uff0c\u5199\u5728 <code>\/etc\/sysctl.conf<\/code>\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">\n # \u52a0\u5927 TCP \u7b49\u5f85\u961f\u5217\u957f\u5ea6\uff0c\u7f13\u89e3\u77ac\u65f6\u8fde\u63a5\u6d2a\u5cf0\nnet.core.somaxconn = 4096\n # \u6269\u5927\u672c\u5730\u7aef\u53e3\u8303\u56f4\uff0c\u907f\u514d TIME_WAIT \u72b6\u6001\u4e0b\u7aef\u53e3\u8017\u5c3d\nnet.ipv4.ip_local_port_range = 1024 65535\n # \u5f00\u542f TCP \u65f6\u95f4\u6233\u4e0e\u7a97\u53e3\u7f29\u653e\uff0c\u63d0\u5347\u5927\u5e26\u5bbd\uff08\u7f51\u7edc\u94fe\u8def\u5355\u4f4d\u65f6\u95f4\u53ef\u4f20\u8f93\u7684\u6570\u636e\u91cf\u4e0a\u9650\uff09\u4e0b\u7684\u541e\u5410\nnet.ipv4.tcp_timestamps = 1\nnet.ipv4.tcp_window_scaling = 1\n # \u589e\u5927\u63a5\u6536\u4e0e\u53d1\u9001\u7f13\u51b2\u533a\nnet.core.rmem_max = 16777216\nnet.core.wmem_max = 16777216\n<\/pre>\n<p>\u8fd9\u51e0\u4e2a\u53c2\u6570\u5404\u6709\u7528\u9014\u3002<code>somaxconn<\/code>\uff08\u5185\u6838\u6838\u5fc3\u547d\u540d\u7a7a\u95f4\u4e0b\u7684 TCP \u53c2\u6570\uff09\u51b3\u5b9a\u5185\u6838\u63a5\u53d7\u8fde\u63a5\u7684\u7b49\u5f85\u961f\u5217\u957f\u5ea6\uff0cNginx \u6216\u5e94\u7528\u5c42\u7684 backlog \u4e0d\u80fd\u8d85\u8fc7\u5b83\uff0c4096 \u662f\u4e00\u4e2a\u9002\u5408\u591a\u6570\u4e1a\u52a1\u7684\u5178\u578b\u533a\u95f4\u3002<code>ip_local_port_range<\/code> \u6269\u5927\u53ef\u7528\u7684\u6e90\u7aef\u53e3\u8303\u56f4\uff0c\u5f53\u77ed\u8fde\u63a5\u5f88\u591a\u3001\u5927\u91cf\u8fde\u63a5\u8fdb\u5165 TIME_WAIT \u72b6\u6001\u65f6\uff0c\u7aef\u53e3\u4e0d\u591f\u4f1a\u5bfc\u81f4\u65b0\u8fde\u63a5\u5931\u8d25\uff0c\u8fd9\u4e2a\u53c2\u6570\u80fd\u660e\u663e\u7f13\u89e3\u3002<code>rmem_max<\/code> \u548c <code>wmem_max<\/code> \u52a0\u5927 TCP \u6536\u53d1\u7f13\u51b2\u533a\uff0c\u5bf9\u7f51\u7edc\u5ef6\u8fdf\u8f83\u9ad8\u3001\u9700\u8981\u8f83\u5927\u6ed1\u52a8\u7a97\u53e3\u7684\u4e0b\u8f7d\u7c7b\u5e94\u7528\u5c24\u5176\u6709\u5e2e\u52a9\u3002<\/p>\n<p>\u5982\u679c\u670d\u52a1\u5668\u672c\u8eab\u8fd8\u7528 Nginx \u505a\u53cd\u5411\u4ee3\u7406\u548c\u9650\u6d41\uff0c\u7f51\u7edc\u53c2\u6570\u7684\u8c03\u6574\u4f1a\u76f4\u63a5\u548c\u8fde\u63a5\u961f\u5217\u3001\u9650\u6d41\u9608\u503c\u4ea7\u751f\u5173\u8054\uff0c\u4e24\u8005\u8981\u4e00\u8d77\u89c4\u5212\uff0c\u53ef\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/nginx-limit-req-rate-limiting\/\">Nginx \u8bf7\u6c42\u9650\u6d41\u914d\u7f6e<\/a> \u628a\u5e94\u7528\u5c42\u4e0e\u5185\u6838\u5c42\u7684\u8fde\u63a5\u63a7\u5236\u5bf9\u9f50\uff0c\u907f\u514d\u5185\u6838\u653e\u884c\u800c\u5e94\u7528\u5c42\u53c8\u62e6\u56de\u53bb\u3002<\/p>\n<h2>\u5185\u5b58\u4e0e\u6587\u4ef6\u53e5\u67c4\u53c2\u6570<\/h2>\n<p>\u9664\u4e86\u7f51\u7edc\uff0c\u5185\u5b58\u548c\u6587\u4ef6\u53e5\u67c4\u53c2\u6570\u540c\u6837\u5f71\u54cd\u5e76\u53d1\u5904\u7406\u80fd\u529b\u3002\u9ad8\u5e76\u53d1 Web \u670d\u52a1\u9700\u8981\u540c\u65f6\u6253\u5f00\u5927\u91cf\u6587\u4ef6\u63cf\u8ff0\u7b26\uff08file descriptor\uff0c\u5185\u6838\u7528\u4e8e\u6807\u8bc6\u6253\u5f00\u6587\u4ef6\u6216\u7f51\u7edc\u8fde\u63a5\u7684\u6574\u6570\u53e5\u67c4\uff09\uff0c\u9ed8\u8ba4\u4e0a\u9650\u592a\u4f4e\u4f1a\u5bfc\u81f4&#8221;Too many open files&#8221;\u9519\u8bef\u3002\u76f8\u5173\u914d\u7f6e\u5982\u4e0b\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">\n # \u7cfb\u7edf\u7ea7\u6700\u5927\u6587\u4ef6\u53e5\u67c4\u6570\nfs.file-max = 65535\n # \u6bcf\u4e2a\u8fdb\u7a0b\u53ef\u6253\u5f00\u7684\u6700\u5927\u6587\u4ef6\u53e5\u67c4\nfs.nr_open = 1048576\n # \u63d0\u9ad8\u5185\u5b58\u4e0d\u8db3\u65f6\u56de\u6536\u9875\u9762\u7684\u538b\u529b\u9608\u503c\uff080-100\uff0c\u8d8a\u5927\u8d8a\u503e\u5411\u56de\u6536\uff09\nvm.swappiness = 10\n # \u4fdd\u7559\u4e00\u5b9a\u5185\u5b58\u7ed9\u5185\u6838\u4f7f\u7528\uff0c\u907f\u514d\u5185\u5b58\u8017\u5c3d\u65f6\u7cfb\u7edf\u5361\u6b7b\nvm.min_free_kbytes = 131072\n<\/pre>\n<p><code>fs.file-max<\/code> \u63a7\u5236\u7cfb\u7edf\u5168\u5c40\u80fd\u6253\u5f00\u7684\u6587\u4ef6\u53e5\u67c4\u603b\u6570\uff0c<code>fs.nr_open<\/code> \u662f\u5355\u8fdb\u7a0b\u7684\u4e0a\u9650\u3002\u8fd9\u4e24\u4e2a\u503c\u8981\u914d\u5408\u8fdb\u7a0b\u81ea\u8eab\u7684 <code>ulimit -n<\/code> \u8bbe\u7f6e\uff0c\u53ea\u8c03\u5185\u6838\u4e0d\u8c03 ulimit \u53ef\u80fd\u4e0d\u751f\u6548\u3002<code>vm.swappiness<\/code> \u9ed8\u8ba4\u591a\u4e3a 60\uff0c\u6570\u503c\u8d8a\u5927\u7cfb\u7edf\u8d8a\u503e\u5411\u4e8e\u628a\u5185\u5b58\u9875\u4ea4\u6362\u5230\u78c1\u76d8\uff0c\u5bf9\u8ffd\u6c42\u4f4e\u5ef6\u8fdf\u7684\u6570\u636e\u5e93\u6216 Web \u670d\u52a1\u901a\u5e38\u8c03\u4f4e\u5230 10 \u5de6\u53f3\uff0c\u8ba9\u8fdb\u7a0b\u5c3d\u91cf\u9a7b\u7559\u5185\u5b58\u3002<code>vm.min_free_kbytes<\/code> \u4e3a\u5185\u6838\u4fdd\u7559\u4e00\u90e8\u5206\u7a7a\u95f2\u5185\u5b58\uff0c\u9632\u6b62\u5185\u5b58\u5206\u914d\u8017\u5c3d\u5bfc\u81f4\u7cfb\u7edf\u54cd\u5e94\u53d8\u6162\u3002\u793a\u4f8b\u4e2d\u7684\u6570\u503c\u5747\u4e3a\u5178\u578b\u533a\u95f4\uff0c\u8bf7\u6309\u5b9e\u9645\u5185\u5b58\u5927\u5c0f\u8c03\u6574\u3002<\/p>\n<p>\u5982\u679c\u4f60\u7684\u670d\u52a1\u5668\u8fd8\u627f\u8f7d\u6570\u636e\u5e93\uff0c\u5185\u5b58\u53c2\u6570\u548c\u6570\u636e\u5e93\u81ea\u8eab\u7684\u5185\u5b58\u914d\u7f6e\u4f1a\u76f8\u4e92\u5f71\u54cd\uff0c\u5efa\u8bae\u4e00\u5e76\u6392\u67e5\uff0c\u53ef\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/mysql-slow-query-analysis\/\">MySQL \u6162\u67e5\u8be2\u5206\u6790\u4e0e\u4f18\u5316<\/a>\uff0c\u628a\u5185\u6838\u5185\u5b58\u5206\u914d\u4e0e\u6570\u636e\u5e93\u7f13\u51b2\u6c60\uff08buffer pool\uff09\u7684\u5360\u7528\u7edf\u7b79\u8003\u8651\u3002<\/p>\n<h2>TCP \u8fde\u63a5\u56de\u6536\u4e0e\u5feb\u901f\u590d\u7528<\/h2>\n<p>\u77ed\u8fde\u63a5\u5bc6\u96c6\u7684\u4e1a\u52a1\u4f1a\u4ea7\u751f\u5927\u91cf TIME_WAIT \u72b6\u6001\u8fde\u63a5\uff0c\u6bcf\u4e2a\u8fde\u63a5\u5728\u5173\u95ed\u540e\u8981\u7b49\u4e00\u6bb5\u65f6\u95f4\u624d\u80fd\u5b8c\u5168\u91ca\u653e\u7aef\u53e3\u548c\u5185\u5b58\u3002\u9002\u5f53\u8c03\u6574\u76f8\u5173\u53c2\u6570\u53ef\u4ee5\u52a0\u901f\u56de\u6536\uff0c\u4f46\u8981\u6ce8\u610f\u4e0d\u80fd\u76f2\u76ee\u6fc0\u8fdb\uff0c\u5426\u5219\u53ef\u80fd\u5f71\u54cd\u8fde\u63a5\u53ef\u9760\u6027\u3002\u5e38\u89c1\u914d\u7f6e\u5982\u4e0b\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">\n # \u5141\u8bb8\u56de\u6536\u5904\u4e8e TIME_WAIT \u72b6\u6001\u7684\u8fde\u63a5\uff08\u8c28\u614e\u4f7f\u7528\uff09\nnet.ipv4.tcp_tw_reuse = 1\n # \u7f29\u77ed TIME_WAIT \u72b6\u6001\u6700\u957f\u7b49\u5f85\u65f6\u95f4\uff08\u79d2\uff0c\u793a\u4f8b\u503c\uff09\nnet.ipv4.tcp_fin_timeout = 15\n # \u5f00\u542f SYN \u534a\u8fde\u63a5\u961f\u5217\u4fdd\u62a4\nnet.ipv4.tcp_syncookies = 1\n<\/pre>\n<p><code>tcp_tw_reuse<\/code> \u5141\u8bb8\u5185\u6838\u5b89\u5168\u5730\u590d\u7528\u5904\u4e8e TIME_WAIT \u72b6\u6001\u7684\u8fde\u63a5\uff0c\u5bf9\u9ad8\u5e76\u53d1\u77ed\u8fde\u63a5\u4e1a\u52a1\u6536\u76ca\u660e\u663e\u3002<code>tcp_fin_timeout<\/code> \u7f29\u77ed\u8fde\u63a5\u5173\u95ed\u540e\u7684\u7b49\u5f85\u65f6\u95f4\uff0c15 \u662f\u4e00\u4e2a\u504f\u7d27\u51d1\u7684\u5178\u578b\u533a\u95f4\uff0c\u503c\u592a\u5c0f\u53ef\u80fd\u5bfc\u81f4\u8fde\u63a5\u5f02\u5e38\uff0c\u4e0d\u5efa\u8bae\u4f4e\u4e8e 10\u3002<code>tcp_syncookies<\/code> \u5f00\u542f SYN Cookie \u673a\u5236\uff0c\u80fd\u5728 SYN \u6d2a\u6cdb\u653b\u51fb\u65f6\u4fdd\u62a4\u670d\u52a1\u4e0d\u56e0\u534a\u8fde\u63a5\u961f\u5217\u8017\u5c3d\u800c\u762b\u75ea\uff0c\u5efa\u8bae\u59cb\u7ec8\u5f00\u542f\u3002\u53e6\u5916\u8981\u6ce8\u610f\uff0c\u8fd9\u4e9b\u53c2\u6570\u6539\u52a8\u8981\u7ed3\u5408\u771f\u5b9e\u538b\u6d4b\u89c2\u5bdf\uff0c\u4e0d\u8981\u4e00\u4e0a\u6765\u5c31\u8ffd\u6c42\u6781\u7aef\u503c\u3002<\/p>\n<h2>\u5e94\u7528\u53c2\u6570\u5e76\u9a8c\u8bc1\u6548\u679c<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/sysctl-verify-tuning.webp\" alt=\"\u5185\u6838\u53c2\u6570\u5e94\u7528\u4e0e\u9a8c\u8bc1\u6d41\u7a0b\u793a\u610f\u56fe\" loading=\"lazy\" \/><\/p>\n<p>\u628a\u63a8\u8350\u53c2\u6570\u5199\u8fdb <code>\/etc\/sysctl.conf<\/code> \u540e\uff0c\u5148\u505a\u4e00\u6b21\u8bed\u6cd5\u68c0\u67e5\u518d\u5e94\u7528\u3002\u7528 <code>sysctl -p<\/code> \u5e94\u7528\u65f6\u5982\u679c\u67d0\u884c\u62a5\u9519\uff0c\u591a\u534a\u662f\u53c2\u6570\u540d\u5199\u9519\u6216\u503c\u8d85\u51fa\u5141\u8bb8\u8303\u56f4\uff0c\u53ef\u4ee5\u5355\u72ec\u4fee\u6b63\u90a3\u4e00\u884c\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">\n # \u5e94\u7528\u914d\u7f6e\u5e76\u67e5\u770b\u662f\u5426\u6709\u62a5\u9519\nsysctl -p\n # \u590d\u6838\u5173\u952e\u53c2\u6570\u662f\u5426\u751f\u6548\nsysctl net.core.somaxconn fs.file-max vm.swappiness\n<\/pre>\n<p>\u5e94\u7528\u540e\u5efa\u8bae\u505a\u4e00\u6b21\u538b\u6d4b\u6765\u786e\u8ba4\u6536\u76ca\u3002\u53ef\u4ee5\u7528 <code>ab<\/code> \u6216 wrk \u8fd9\u7c7b\u5de5\u5177\u53d1\u4e00\u6279\u5e76\u53d1\u8bf7\u6c42\uff0c\u5bf9\u6bd4\u8c03\u4f18\u524d\u540e\u7684\u541e\u5410\uff08\u6bcf\u79d2\u8bf7\u6c42\u6570\uff09\u4e0e\u9519\u8bef\u7387\u3002\u793a\u4f8b\u4e2d\uff0c\u5982\u679c\u8c03\u4f18\u524d\u5728 1000 \u5e76\u53d1\u4e0b\u51fa\u73b0\u5927\u91cf connect timeout\uff0c\u8c03\u4f18\u540e\u660e\u663e\u51cf\u5c11\u6216\u6d88\u5931\uff0c\u8bf4\u660e\u8fde\u63a5\u961f\u5217\u4e0e\u7aef\u53e3\u53c2\u6570\u751f\u6548\u4e86\u3002\u6d4b\u8bd5\u73af\u5883\u3001\u5e76\u53d1\u91cf\u3001\u538b\u6d4b\u5de5\u5177\u90fd\u4f1a\u5f71\u54cd\u7ed3\u679c\uff0c\u8bf7\u628a\u6570\u503c\u5f53\u4f5c\u5178\u578b\u533a\u95f4\u800c\u975e\u7edd\u5bf9\u6807\u51c6\u3002<\/p>\n<p>\u5982\u679c\u8981\u628a\u6027\u80fd\u6570\u636e\u957f\u671f\u6c89\u6dc0\u4e0b\u6765\u8f85\u52a9\u5224\u65ad\uff0c\u53ef\u4ee5\u5728\u538b\u6d4b\u7684\u540c\u65f6\u63a5\u4e0a\u53ef\u89c6\u5316\u76d1\u63a7\uff0c<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/grafana-server-deployment-practical\/\">Grafana \u670d\u52a1\u5668\u90e8\u7f72\u5b9e\u8df5<\/a> \u63d0\u4f9b\u4e86\u4e00\u5957\u73b0\u6210\u7684\u76d1\u63a7\u65b9\u6848\uff0c\u80fd\u5e2e\u4f60\u628a\u541e\u5410\u3001\u8fde\u63a5\u6570\u3001\u5185\u5b58\u6c34\u4f4d\u7edf\u4e00\u770b\u677f\u3002<\/p>\n<h2>\u907f\u5751\u8981\u70b9<\/h2>\n<p>\u5185\u6838\u8c03\u4f18\u6536\u76ca\u660e\u663e\uff0c\u4f46\u6539\u9519\u53c2\u6570\u4e5f\u53ef\u80fd\u8ba9\u670d\u52a1\u5f02\u5e38\uff0c\u6574\u7406\u51e0\u4e2a\u9ad8\u9891\u907f\u5751\u70b9\uff1a<\/p>\n<ul>\n<li>\u6bcf\u6b21\u53ea\u6539\u5c11\u91cf\u53c2\u6570\u5e76\u7acb\u5373\u538b\u6d4b\uff0c\u4e0d\u8981\u4e00\u6b21\u6027\u5806\u4e00\u5806\u914d\u7f6e\uff0c\u65b9\u4fbf\u5b9a\u4f4d\u662f\u54ea\u4e00\u9879\u751f\u6548\u6216\u51fa\u9519<\/li>\n<li>\u4fee\u6539 <code>\/etc\/sysctl.conf<\/code> \u524d\u5148\u5907\u4efd\uff0c\u56de\u6eda\u65f6\u76f4\u63a5\u6062\u590d\u5907\u4efd\u518d <code>sysctl -p<\/code> \u5373\u53ef<\/li>\n<li>\u7f51\u7edc\u5ef6\u8fdf\u9ad8\u7684\u8de8\u673a\u623f\u573a\u666f\uff0c\u7f13\u51b2\u533a\u5f00\u592a\u5927\u53cd\u800c\u6d6a\u8d39\u5185\u5b58\uff0c\u7ed3\u5408\u771f\u5b9e RTT\uff08Round-Trip Time\uff0c\u5f80\u8fd4\u65f6\u95f4\uff0c\u6307\u6570\u636e\u5305\u4ece\u53d1\u9001\u5230\u786e\u8ba4\u6536\u5230\u6240\u9700\u7684\u65f6\u95f4\uff09\u8c03\u6574<\/li>\n<li>\u6587\u4ef6\u53e5\u67c4\u8c03\u5927\u540e\u8981\u540c\u6b65\u8c03\u9ad8\u8fdb\u7a0b <code>ulimit -n<\/code>\uff0c\u5426\u5219\u5185\u6838\u653e\u884c\u4f46\u8fdb\u7a0b\u4ecd\u53d7\u9650<\/li>\n<li>\u751f\u4ea7\u73af\u5883\u6539\u52a8\u5c3d\u91cf\u5b89\u6392\u5728\u4f4e\u5cf0\u671f\uff0c\u5e76\u9884\u7559\u56de\u6eda\u65b9\u6848<\/li>\n<\/ul>\n<p>\u5982\u679c\u4f60\u7684\u670d\u52a1\u5668\u8fd8\u6d89\u53ca\u8de8\u8282\u70b9\u7ec4\u7f51\u4e0e\u957f\u8fde\u63a5\uff0c\u7f51\u7edc\u53c2\u6570\u4e4b\u5916\u7684\u8def\u7531\u4e0e\u96a7\u9053\u914d\u7f6e\u4e5f\u5f88\u5173\u952e\uff0c<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/wireguard-multihop-relay\/\">WireGuard \u591a\u8df3\u4e2d\u7ee7\u914d\u7f6e<\/a> \u63d0\u4f9b\u4e86\u4e00\u5957\u5b89\u5168\u7684\u7ec4\u7f51\u5b9e\u8df5\uff0c\u80fd\u628a\u5185\u6838\u7f51\u7edc\u53c2\u6570\u4e0e\u96a7\u9053\u5c42\u7684\u7a33\u5b9a\u6027\u7edf\u4e00\u8003\u8651\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>sysctl \u5185\u6838\u53c2\u6570\u8c03\u4f18\u662f\u63d0\u5347\u670d\u52a1\u5668\u7f51\u7edc\u4e0e\u5185\u5b58\u80fd\u529b\u3001\u53c8\u4e0d\u5fc5\u6362\u786c\u4ef6\u7684\u6027\u4ef7\u6bd4\u624b\u6bb5\u3002\u6838\u5fc3\u601d\u8def\u5f88\u6e05\u6670\uff1a\u5148\u4e86\u89e3 <code>\/etc\/sysctl.conf<\/code> \u4e0e <code>sysctl -p<\/code> \u7684\u5e94\u7528\u65b9\u5f0f\uff0c\u518d\u9488\u5bf9\u9ad8\u5e76\u53d1\u573a\u666f\u8c03\u6574 TCP \u8fde\u63a5\u961f\u5217\u3001\u7aef\u53e3\u8303\u56f4\u3001\u6536\u53d1\u7f13\u51b2\u533a\u7b49\u7f51\u7edc\u53c2\u6570\uff0c\u914d\u5408\u6587\u4ef6\u53e5\u67c4\u3001swappiness \u7b49\u5185\u5b58\u53c2\u6570\uff0c\u6700\u540e\u7528 <code>sysctl -p<\/code> \u5e94\u7528\u5e76\u538b\u6d4b\u9a8c\u8bc1\u3002\u8bb0\u4f4f\u53c2\u6570\u662f\u5178\u578b\u533a\u95f4\u800c\u975e\u7edd\u5bf9\u6807\u51c6\u3001\u6539\u524d\u5907\u4efd\u3001\u9010\u9879\u538b\u6d4b\uff0c\u5c31\u80fd\u5728\u4e0d\u52a8\u786c\u4ef6\u7684\u524d\u63d0\u4e0b\u625b\u4f4f\u66f4\u5927\u5e76\u53d1\u3002\u5982\u679c\u4f60\u9700\u8981\u4e00\u53f0\u57fa\u7840\u7f51\u7edc\u4e0e\u5185\u5b58\u914d\u7f6e\u624e\u5b9e\u3001\u53ef\u7075\u6d3b\u8c03\u4f18\u7684\u6d77\u5916\u670d\u52a1\u5668\uff0cHostease \u7684 <a href=\"https:\/\/cn.hostease.com\/vps\/\">VPS<\/a>\uff08Virtual Private Server\uff0c<a href=\"https:\/\/cn.hostease.com\/vps\/\">\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668<\/a>\uff0c\u901a\u8fc7\u865a\u62df\u5316\u6280\u672f\u5212\u5206\u51fa\u7684<a href=\"https:\/\/cn.hostease.com\/dedicated-server\/\">\u72ec\u7acb\u670d\u52a1\u5668<\/a>\u73af\u5883\uff09\u4e0e\u72ec\u7acb\u670d\u52a1\u5668\u65b9\u6848\u90fd\u80fd\u6ee1\u8db3\u90e8\u7f72\u9700\u6c42\uff0c\u4f46\u5185\u6838\u53c2\u6570\u4ecd\u5efa\u8bae\u6309\u672c\u6587\u6e05\u5355\u7ed3\u5408\u81ea\u8eab\u8d1f\u8f7d\u5b9e\u6d4b\u540e\u786e\u5b9a\u3002<\/p>\n<p>\u8c03\u4f18\u4e0d\u662f\u4e00\u52b3\u6c38\u9038\uff0c\u6700\u597d\u628a\u5185\u6838\u53c2\u6570\u3001\u8fde\u63a5\u961f\u5217\u548c\u4e0a\u5c42\u5e94\u7528\u4e00\u8d77\u7eb3\u5165\u5468\u671f\u5de1\u68c0\uff0c\u914d\u5408\u8bc1\u4e66\u4e0e\u9650\u6d41\u7684\u7a33\u5b9a\u6027\u7ba1\u7406\uff0c\u624d\u80fd\u8ba9\u7ad9\u70b9\u957f\u671f\u7a33\u5b9a\u8fd0\u884c\uff0c\u6bd4\u5982\u8bc1\u4e66\u7eed\u671f\u73af\u8282\u53ef\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/certbot-troubleshooting-server-ssl\/\">Certbot \u8bc1\u4e66\u7eed\u671f\u6392\u969c<\/a> \u4e00\u5e76\u68c0\u67e5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u7bc7\u6307\u5357\u6559\u4f60\u7528 sysctl \u505a\u670d\u52a1\u5668\u5185\u6838\u53c2\u6570\u8c03\u4f18\u3002\u6db5\u76d6 \/etc\/sysctl.conf \u914d\u7f6e\u65b9\u6cd5\u3001TCP \u7f51\u7edc\u53c2\u6570\u3001\u6587\u4ef6\u53e5\u67c4\u4e0e\u5185\u5b58\u53c2\u6570\uff0c\u4ee5\u53ca\u7528 sysctl -p \u5e94\u7528\u914d\u7f6e\uff0c\u5e2e\u52a9\u4f60\u63d0\u5347\u7f51\u7edc\u541e\u5410\u4e0e\u5e76\u53d1\u5904\u7406\u80fd\u529b\u3002<\/p>\n","protected":false},"author":2,"featured_media":32842,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3822],"tags":[909,4949,4952,4950,4951],"class_list":["post-32845","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-linux","tag-sysctl","tag-4952","tag-4950","tag-4951"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/sysctl-server-network-practical-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=32845"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32845\/revisions"}],"predecessor-version":[{"id":32846,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/32845\/revisions\/32846"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/32842"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=32845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=32845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=32845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}