{"id":31444,"date":"2026-07-21T10:00:00","date_gmt":"2026-07-21T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/uncategorized\/nginx-performance-tuning-worker-buffer-keepalive\/"},"modified":"2026-07-25T23:50:01","modified_gmt":"2026-07-25T15:50:01","slug":"nginx-concurrency-troubleshooting-guide","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/nginx-concurrency-troubleshooting-guide\/","title":{"rendered":"Nginx \u9ad8\u5e76\u53d1\u6392\u969c\u6307\u5357\uff1a\u4ece worker \u9971\u548c\u5230 keepalive \u590d\u7528"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/07\/nginx-concurrency-troubleshooting-cover.webp\" alt=\"Nginx \u9ad8\u5e76\u53d1\u6392\u969c\u4e2d\u7684\u8fde\u63a5\u5206\u6d41\u4e0e\u8d44\u6e90\u89c2\u5bdf\" loading=\"lazy\" \/><\/p>\n<p>\u5982\u4f55\u5224\u65ad Nginx \u54cd\u5e94\u6162\u5230\u5e95\u662f worker \u8fdb\u7a0b\u4e0d\u591f\u3001\u7f13\u51b2\u533a\u914d\u7f6e\u4e0d\u5408\u9002\uff0c\u8fd8\u662f keepalive \u8fde\u63a5\u6ca1\u6709\u590d\u7528\uff1f\u5f88\u591a\u7ad9\u957f\u4f1a\u5148\u60f3\u5230\u52a0 CDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff0c\u901a\u8fc7\u5168\u7403\u8282\u70b9\u7f13\u5b58\u5185\u5bb9\u6765\u7f29\u77ed\u8bbf\u95ee\u8ddd\u79bb\uff09\u6216\u5347\u7ea7 [VPS](https:\/\/cn.hostease.com\/vps\/)\uff08[\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668](https:\/\/cn.hostease.com\/vps\/)\uff0c\u5728[\u7269\u7406\u670d\u52a1\u5668](https:\/\/cn.hostease.com\/dedicated-server\/)\u4e0a\u5212\u5206\u51fa\u7684\u72ec\u7acb\u865a\u62df\u73af\u5883\uff09\uff0c\u4f46\u5982\u679c Nginx \u672c\u8eab\u5df2\u7ecf\u5728\u9ad8\u5e76\u53d1\u4e0b\u6392\u961f\uff0c\u5916\u5c42\u52a0\u901f\u53ea\u80fd\u7f13\u89e3\u4e00\u90e8\u5206\u75c7\u72b6\uff0c\u65e0\u6cd5\u89e3\u51b3\u6838\u5fc3\u74f6\u9888\u3002<\/p>\n<p><strong>\u8fd9\u7bc7\u6307\u5357\u7684\u91cd\u70b9\u4e0d\u662f\u91cd\u590d\u4e00\u4efd\u901a\u7528\u53c2\u6570\u6e05\u5355\uff0c\u800c\u662f\u6559\u4f60\u4ece\u65e5\u5fd7\u3001\u538b\u6d4b\u548c\u8d44\u6e90\u66f2\u7ebf\u91cc\u5b9a\u4f4d\u95ee\u9898\u3002<\/strong> \u4f60\u4f1a\u770b\u5230 worker\u3001\u7f13\u51b2\u533a\u4e0e keepalive \u4e09\u7c7b\u914d\u7f6e\u5206\u522b\u9002\u5408\u89e3\u51b3\u4ec0\u4e48\u95ee\u9898\uff0c\u54ea\u4e9b\u6307\u6807\u9700\u8981\u5148\u786e\u8ba4\uff0c\u4fee\u6539\u540e\u53c8\u8be5\u7528\u4ec0\u4e48\u547d\u4ee4\u9a8c\u8bc1\u3002<\/p>\n<h2>\u5148\u505a\u57fa\u7ebf\uff1a\u4e0d\u8981\u5728\u6ca1\u6709\u8bc1\u636e\u65f6\u8c03\u53c2\u6570<\/h2>\n<p>Nginx\uff08\u9ad8\u6027\u80fd Web \u670d\u52a1\u5668\u548c\u53cd\u5411\u4ee3\u7406\u8f6f\u4ef6\uff09\u8c03\u4f18\u6700\u6015\u201c\u770b\u5230\u914d\u7f6e\u5c31\u6539\u201d\u3002\u540c\u4e00\u4e2a <code>worker_connections<\/code> \u53c2\u6570\uff0c\u5728 2 \u6838 2GB \u7684\u535a\u5ba2\u7ad9\u30014 \u6838 8GB \u7684\u5916\u8d38\u7ad9\u3001\u524d\u7aef\u9759\u6001\u8d44\u6e90\u7f51\u5173\u4e0a\u7684\u610f\u4e49\u5b8c\u5168\u4e0d\u540c\u3002\u6b63\u786e\u987a\u5e8f\u5e94\u8be5\u662f\u5148\u8bb0\u5f55\u57fa\u7ebf\uff0c\u518d\u6539\u4e00\u7ec4\u914d\u7f6e\uff0c\u6700\u540e\u7528\u540c\u4e00\u7ec4\u538b\u6d4b\u547d\u4ee4\u590d\u6d4b\u3002<\/p>\n<p>\u5efa\u8bae\u5148\u6536\u96c6 3 \u7c7b\u8bc1\u636e\uff1a\u8bbf\u95ee\u65e5\u5fd7\u4e2d\u7684\u72b6\u6001\u7801\u5206\u5e03\u3001\u9519\u8bef\u65e5\u5fd7\u4e2d\u7684\u5173\u952e\u62a5\u9519\u3001\u7cfb\u7edf\u5c42\u9762\u7684 CPU\uff08\u4e2d\u592e\u5904\u7406\u5668\uff09\u4e0e\u5185\u5b58\u66f2\u7ebf\u3002\u6bd4\u5982 <code>499<\/code> \u589e\u591a\u5e38\u89c1\u4e8e\u5ba2\u6237\u7aef\u7b49\u5f85\u8d85\u65f6\uff0c<code>502\/504<\/code> \u66f4\u53ef\u80fd\u6307\u5411\u540e\u7aef\u6216\u4ee3\u7406\u94fe\u8def\uff0c<code>worker_connections are not enough<\/code> \u5219\u76f4\u63a5\u8bf4\u660e Nginx \u8fde\u63a5\u4e0a\u9650\u89e6\u9876\u3002\u5173\u4e8e TTFB\uff08\u9996\u5b57\u8282\u65f6\u95f4\uff09\u4e0e\u4e3b\u673a\u5c42\u4f18\u5316\u7684\u5173\u7cfb\uff0c\u53ef\u4ee5\u5148\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/ttfb-hosting-optimization\/\">TTFB \u4f18\u5316\u6307\u5357<\/a>\uff0c\u518d\u56de\u5230\u672c\u6587\u505a Nginx \u4fa7\u6392\u67e5\u3002<\/p>\n<pre><code class=\"language-bash\">grep 'worker_connections are not enough' \/var\/log\/nginx\/error.log | tail -20\nawk '{print $9}' \/var\/log\/nginx\/access.log | sort | uniq -c | sort -nr | head\nvmstat 1 10\n<\/code><\/pre>\n<p>\u5982\u679c\u8fd9\u4e9b\u547d\u4ee4\u663e\u793a CPU \u957f\u65f6\u95f4\u4f4e\u4e8e 40%\u3001\u5185\u5b58\u4ecd\u6709\u4f59\u91cf\uff0c\u4f46\u8bf7\u6c42\u6392\u961f\u660e\u663e\uff0c\u4f18\u5148\u770b\u8fde\u63a5\u6570\u548c\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\u5982\u679c CPU \u5df2\u63a5\u8fd1 90%\uff0c\u5374\u6ca1\u6709\u8fde\u63a5\u4e0a\u9650\u62a5\u9519\uff0c\u4f18\u5148\u770b gzip\u3001TLS\uff08\u4f20\u8f93\u5c42\u52a0\u5bc6\u534f\u8bae\uff09\u548c\u540e\u7aef\u54cd\u5e94\u3002\u8fd9\u6837\u505a\u80fd\u907f\u514d\u628a\u6240\u6709\u6162\u8bf7\u6c42\u90fd\u5f52\u548e\u4e8e Nginx \u53c2\u6570\u3002<\/p>\n<h2>worker \u9971\u548c\uff1a\u5148\u770b\u8fde\u63a5\u4e0a\u9650\uff0c\u518d\u770b\u8fdb\u7a0b\u6570\u91cf<\/h2>\n<p>worker \u8fdb\u7a0b\u662f Nginx \u5904\u7406\u8bf7\u6c42\u7684\u57fa\u672c\u6267\u884c\u5355\u5143\u3002\u5b83\u91c7\u7528\u4e8b\u4ef6\u9a71\u52a8\u6a21\u578b\uff0c\u4e00\u4e2a worker \u53ef\u4ee5\u540c\u65f6\u7ef4\u62a4\u5927\u91cf\u8fde\u63a5\uff0c\u4f46\u5b83\u4ecd\u53d7 CPU \u6838\u5fc3\u3001\u6587\u4ef6\u63cf\u8ff0\u7b26\u548c <code>worker_connections<\/code> \u9650\u5236\u3002\u51fa\u73b0\u8fde\u63a5\u6392\u961f\u65f6\uff0c\u4e0d\u8981\u53ea\u628a <code>worker_processes<\/code> \u6539\u6210\u5f88\u5927\u7684\u6570\u5b57\u3002<\/p>\n<pre><code class=\"language-nginx\">worker_processes auto;\nworker_rlimit_nofile 65535;\n\nevents {\n    use epoll;\n    worker_connections 2048;\n    multi_accept on;\n}\n<\/code><\/pre>\n<p><code>worker_processes auto<\/code> \u4f1a\u6309 CPU \u6838\u5fc3\u6570\u542f\u52a8 worker\u3002\u5bf9\u5927\u591a\u6570 Linux \u670d\u52a1\u5668\u6765\u8bf4\uff0c\u8fd9\u662f\u5b89\u5168\u8d77\u70b9\u3002\u771f\u6b63\u7ecf\u5e38\u88ab\u5ffd\u7565\u7684\u662f <code>worker_rlimit_nofile<\/code> \u4e0e\u7cfb\u7edf <code>nofile<\/code> \u9650\u5236\u3002\u5982\u679c Nginx \u914d\u7f6e\u91cc\u5141\u8bb8 8192 \u4e2a\u8fde\u63a5\uff0c\u4f46\u7cfb\u7edf\u4ecd\u628a\u5355\u8fdb\u7a0b\u6587\u4ef6\u63cf\u8ff0\u7b26\u9650\u5236\u5728 1024\uff0c\u8fde\u63a5\u4e0a\u9650\u4f1a\u63d0\u524d\u89e6\u9876\u3002<\/p>\n<ul>\n<li>2 \u6838 2GB \u5c0f\u578b\u7ad9\u70b9\u53ef\u4ee5\u4ece <code>worker_connections 1024<\/code> \u8d77\u6b65\uff0c\u603b\u5e76\u53d1\u7ea6 2048\u3002<\/li>\n<li>4 \u6838 8GB \u4e1a\u52a1\u7ad9\u70b9\u53ef\u4ee5\u6d4b\u8bd5 <code>2048<\/code>\uff0c\u5e76\u540c\u6b65\u786e\u8ba4 <code>ulimit -n<\/code> \u4e0d\u4f4e\u4e8e 65535\u3002<\/li>\n<li>\u5982\u679c\u5355\u8fde\u63a5\u5e73\u5747\u5360\u7528\u7ea6 128KB-256KB \u5185\u5b58\uff0c\u628a\u8fde\u63a5\u6570\u4ece 4096 \u63d0\u5230 16384 \u524d\u8981\u5148\u7b97\u5185\u5b58\u4f59\u91cf\u3002<\/li>\n<li>\u51fa\u73b0 <code>EMFILE<\/code> \u6216 <code>too many open files<\/code> \u65f6\uff0c\u5148\u4fee\u7cfb\u7edf\u9650\u5236\uff0c\u518d\u8c08 Nginx \u53c2\u6570\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u91cc\u7684\u5173\u952e\u662f\u201c\u8fde\u63a5\u5bb9\u91cf\u201d\u548c\u201cCPU \u5e76\u884c\u5ea6\u201d\u5206\u5f00\u770b\u3002\u524d\u8005\u7531 worker \u8fde\u63a5\u6570\u548c\u6587\u4ef6\u63cf\u8ff0\u7b26\u51b3\u5b9a\uff0c\u540e\u8005\u624d\u548c worker \u8fdb\u7a0b\u6570\u5f3a\u76f8\u5173\u3002\u6211\u4eec\u5728\u6392\u67e5\u4e2d\u89c1\u8fc7 4 \u6838\u673a\u5668\u628a <code>worker_processes<\/code> \u8bbe\u4e3a 32\uff0c\u9519\u8bef\u65e5\u5fd7\u6ca1\u6709\u51cf\u5c11\uff0cCPU \u4e0a\u4e0b\u6587\u5207\u6362\u5374\u660e\u663e\u4e0a\u5347\uff1b\u6539\u56de <code>auto<\/code> \u5e76\u63d0\u9ad8 <code>nofile<\/code> \u540e\uff0c\u8fde\u63a5\u62a5\u9519\u624d\u6d88\u5931\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/07\/nginx-worker-capacity.webp\" alt=\"Nginx worker \u8fde\u63a5\u5bb9\u91cf\u4e0e\u7cfb\u7edf\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u5173\u7cfb\" loading=\"lazy\" \/><\/p>\n<h2>\u7f13\u51b2\u533a\u74f6\u9888\uff1a\u770b\u540e\u7aef\u54cd\u5e94\u5927\u5c0f\u548c\u78c1\u76d8\u4e34\u65f6\u6587\u4ef6<\/h2>\n<p>\u5982\u679c\u9519\u8bef\u65e5\u5fd7\u6ca1\u6709\u8fde\u63a5\u4e0a\u9650\u62a5\u9519\uff0c\u4f46\u9875\u9762\u5728\u9ad8\u5cf0\u671f TTFB \u6ce2\u52a8\u5f88\u5927\uff0c\u4e0b\u4e00\u6b65\u8981\u770b\u7f13\u51b2\u533a\u3002Nginx \u4f5c\u4e3a\u53cd\u5411\u4ee3\u7406\u65f6\uff0c\u4f1a\u5148\u8bfb\u53d6\u540e\u7aef\u54cd\u5e94\uff0c\u518d\u628a\u6570\u636e\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u3002\u7f13\u51b2\u533a\u8fc7\u5c0f\u4f1a\u8ba9\u5927\u54cd\u5e94\u9891\u7e41\u5199\u5165\u4e34\u65f6\u6587\u4ef6\uff1b\u7f13\u51b2\u533a\u8fc7\u5927\u53c8\u4f1a\u8ba9\u6bcf\u4e2a\u8fde\u63a5\u5360\u7528\u66f4\u591a\u5185\u5b58\u3002<\/p>\n<pre><code class=\"language-nginx\">proxy_buffering on;\nproxy_buffer_size 8k;\nproxy_buffers 8 16k;\nproxy_busy_buffers_size 32k;\nproxy_temp_file_write_size 64k;\n<\/code><\/pre>\n<p>\u4e00\u4e2a\u53ef\u64cd\u4f5c\u7684\u5224\u65ad\u65b9\u6cd5\u662f\u68c0\u67e5\u9519\u8bef\u65e5\u5fd7\u91cc\u662f\u5426\u51fa\u73b0 <code>an upstream response is buffered to a temporary file<\/code>\u3002\u5076\u5c14\u51fa\u73b0\u5e76\u4e0d\u4e00\u5b9a\u662f\u6545\u969c\uff0c\u4f46\u5982\u679c\u9ad8\u5cf0\u671f\u5927\u91cf\u51fa\u73b0\uff0c\u8bf4\u660e\u540e\u7aef\u54cd\u5e94\u4f53\u8d85\u8fc7\u5185\u5b58\u7f13\u51b2\u533a\uff0cNginx \u6b63\u5728\u9891\u7e41\u5199\u78c1\u76d8\u3002\u5bf9 WordPress\u3001\u56fe\u7247\u8f83\u591a\u7684\u5185\u5bb9\u9875\u6216\u63a5\u53e3\u8fd4\u56de\u8f83\u5927\u7684\u7ad9\u70b9\uff0c\u8fd9\u7c7b\u95ee\u9898\u4f1a\u76f4\u63a5\u62d6\u6162\u54cd\u5e94\u3002<\/p>\n<p>\u8c03\u7f13\u51b2\u533a\u65f6\u5efa\u8bae\u6309\u54cd\u5e94\u5927\u5c0f\u5206\u5c42\uff1a\u666e\u901a HTML \u9875\u9762\u53ef\u4ece 128KB \u603b\u7f13\u51b2\u5f00\u59cb\uff1b\u5982\u679c\u9875\u9762\u5305\u542b\u5927\u91cf\u52a8\u6001\u7247\u6bb5\uff0c\u53ef\u6d4b\u8bd5 256KB\uff1b\u4e0b\u8f7d\u3001\u89c6\u9891\u3001\u8d85\u5927 JSON\uff08\u8f7b\u91cf\u6570\u636e\u4ea4\u6362\u683c\u5f0f\uff09\u63a5\u53e3\u4e0d\u5e94\u5355\u7eaf\u9760\u653e\u5927\u4ee3\u7406\u7f13\u51b2\u89e3\u51b3\uff0c\u800c\u5e94\u8be5\u4f18\u5316\u8f93\u51fa\u6216\u8d70\u4e13\u95e8\u7684\u9759\u6001\u8d44\u6e90\u8def\u5f84\u3002\u66f4\u591a\u7ad9\u70b9\u6027\u80fd\u5206\u6790\u601d\u8def\uff0c\u53ef\u5ef6\u4f38\u9605\u8bfb <a href=\"https:\/\/cn.hostease.com\/blog\/wordpress\/wordpress-speed-optimization-guide\/\">WordPress \u901f\u5ea6\u4f18\u5316\u6307\u5357<\/a>\u3002<\/p>\n<pre><code class=\"language-bash\">grep 'buffered to a temporary file' \/var\/log\/nginx\/error.log | tail -20\nsudo iostat -xz 1 5\n<\/code><\/pre>\n<p>\u5982\u679c <code>iostat<\/code> \u91cc\u78c1\u76d8 await \u957f\u65f6\u95f4\u5347\u9ad8\uff0c\u540c\u65f6 Nginx \u4e34\u65f6\u6587\u4ef6\u65e5\u5fd7\u589e\u591a\uff0c\u5c31\u8bf4\u660e\u74f6\u9888\u4e0d\u5728 worker \u6570\u91cf\uff0c\u800c\u5728\u54cd\u5e94\u7f13\u5b58\u4e0e\u78c1\u76d8 I\/O\uff08\u8f93\u5165\/\u8f93\u51fa\uff09\u3002\u8fd9\u65f6\u76f2\u76ee\u589e\u52a0 worker \u53ea\u4f1a\u8ba9\u66f4\u591a\u8bf7\u6c42\u540c\u65f6\u5199\u76d8\uff0c\u95ee\u9898\u53ef\u80fd\u66f4\u660e\u663e\u3002<\/p>\n<h2>keepalive \u5931\u6548\uff1a\u9ad8\u5e76\u53d1\u4e0b\u6700\u5bb9\u6613\u88ab\u8bef\u5224\u7684\u6162<\/h2>\n<p>keepalive \u7684\u4f5c\u7528\u662f\u590d\u7528\u8fde\u63a5\uff0c\u51cf\u5c11\u91cd\u590d\u5efa\u7acb TCP\uff08\u4f20\u8f93\u63a7\u5236\u534f\u8bae\uff09\u8fde\u63a5\u7684\u63e1\u624b\u6210\u672c\u3002\u5bf9\u6d4f\u89c8\u5668\u5230 Nginx \u7684\u8fde\u63a5\u5982\u6b64\uff0c\u5bf9 Nginx \u5230\u540e\u7aef\u670d\u52a1\u7684\u8fde\u63a5\u4e5f\u4e00\u6837\u3002\u5982\u679c keepalive \u6ca1\u914d\u7f6e\u597d\uff0cNginx \u770b\u8d77\u6765\u5e76\u4e0d\u5fd9\uff0c\u540e\u7aef\u5374\u4f1a\u56e0\u4e3a\u77ed\u8fde\u63a5\u6d2a\u5cf0\u800c\u8017\u5c3d\u8fde\u63a5\u6c60\u3002<\/p>\n<pre><code class=\"language-nginx\">upstream backend {\n    server 127.0.0.1:9000;\n    keepalive 32;\n    keepalive_requests 1000;\n    keepalive_timeout 60s;\n}\n\nserver {\n    location \/ {\n        proxy_pass http:\/\/backend;\n        proxy_http_version 1.1;\n        proxy_set_header Connection \"\";\n    }\n}\n<\/code><\/pre>\n<p>\u8fd9\u91cc\u6700\u5bb9\u6613\u6f0f\u7684\u662f <code>proxy_http_version 1.1<\/code> \u548c <code>proxy_set_header Connection \"\"<\/code>\u3002\u53ea\u5728 <code>upstream<\/code> \u91cc\u5199 <code>keepalive 32<\/code> \u4e0d\u591f\uff0c\u5982\u679c\u4ee3\u7406\u8bf7\u6c42\u4ecd\u6309\u77ed\u8fde\u63a5\u65b9\u5f0f\u8f6c\u53d1\uff0c\u540e\u7aef\u8fde\u63a5\u590d\u7528\u4e0d\u4f1a\u771f\u6b63\u751f\u6548\u3002PHP-FPM\u3001Node.js\u3001Java \u5e94\u7528\u5728\u9ad8\u5cf0\u65f6\u6bb5\u51fa\u73b0\u8fde\u63a5\u6570\u66b4\u6da8\u65f6\uff0c\u4f18\u5148\u68c0\u67e5\u8fd9\u4e00\u7ec4\u914d\u7f6e\u3002<\/p>\n<p>\u5ba2\u6237\u7aef\u4fa7\u4e5f\u8981\u8bbe\u7f6e\u5408\u7406\u7684\u7a7a\u95f2\u65f6\u95f4\uff1a<\/p>\n<pre><code class=\"language-nginx\">keepalive_timeout 65;\nkeepalive_requests 100;\n<\/code><\/pre>\n<p>\u5bf9\u9875\u9762\u8d44\u6e90\u8f83\u591a\u7684\u7ad9\u70b9\uff0c\u5355\u4e2a\u9875\u9762\u52a0\u8f7d 60-120 \u4e2a\u8bf7\u6c42\u5e76\u4e0d\u5c11\u89c1\u3002<code>keepalive_requests 100<\/code> \u80fd\u8986\u76d6\u5927\u591a\u6570\u9875\u9762\u52a0\u8f7d\u8fc7\u7a0b\uff0c\u907f\u514d\u6bcf\u4e2a CSS\u3001JS \u548c\u56fe\u7247\u90fd\u91cd\u65b0\u63e1\u624b\u3002\u82e5\u7ad9\u70b9\u9762\u5411\u8de8\u5883\u8bbf\u95ee\uff0c\u5355\u6b21\u63e1\u624b\u591a\u51fa\u7684 100ms-300ms \u5ef6\u8fdf\u4f1a\u88ab\u653e\u5927\uff0ckeepalive \u7684\u6536\u76ca\u66f4\u660e\u663e\u3002\u82e5\u4f60\u8fd8\u5728\u8bc4\u4f30\u670d\u52a1\u5668\u7f51\u7edc\u4e0e\u5e94\u7528\u6027\u80fd\u7684\u6574\u4f53\u5173\u7cfb\uff0c\u53ef\u4ee5\u7ed3\u5408 <a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u914d\u7f6e\u4e13\u9898<\/a> \u4e00\u8d77\u6392\u67e5\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/07\/nginx-keepalive-reuse.webp\" alt=\"Nginx keepalive \u8fde\u63a5\u590d\u7528\u51cf\u5c11\u91cd\u590d\u63e1\u624b\" loading=\"lazy\" \/><\/p>\n<h2>\u538b\u6d4b\u9a8c\u8bc1\uff1a\u6bcf\u6b21\u53ea\u6539\u4e00\u7ec4\u914d\u7f6e<\/h2>\n<p>\u4fee\u6539\u914d\u7f6e\u540e\uff0c\u9a8c\u8bc1\u6bd4\u914d\u7f6e\u672c\u8eab\u66f4\u91cd\u8981\u3002\u5efa\u8bae\u628a\u6d4b\u8bd5\u5206\u6210\u201c\u4f4e\u5e76\u53d1\u57fa\u7ebf\u201d\u548c\u201c\u63a5\u8fd1\u771f\u5b9e\u5cf0\u503c\u201d\u4e24\u7ec4\u3002\u4f4e\u5e76\u53d1\u7528\u4e8e\u786e\u8ba4\u914d\u7f6e\u6ca1\u6709\u660e\u663e\u9519\u8bef\uff0c\u9ad8\u5e76\u53d1\u7528\u4e8e\u89c2\u5bdf\u74f6\u9888\u662f\u5426\u6539\u5584\u3002\u4e0d\u8981\u4e00\u6b21\u6539 worker\u3001gzip\u3001buffer\u3001keepalive \u56db\u7c7b\u53c2\u6570\uff0c\u5426\u5219\u7ed3\u679c\u53d8\u597d\u6216\u53d8\u5dee\u90fd\u65e0\u6cd5\u5f52\u56e0\u3002<\/p>\n<pre><code class=\"language-bash\">nginx -t && systemctl reload nginx\nwrk -t4 -c100 -d30s https:\/\/example.com\/\nwrk -t8 -c500 -d60s https:\/\/example.com\/\n<\/code><\/pre>\n<p>\u590d\u6d4b\u65f6\u81f3\u5c11\u8bb0\u5f55 4 \u4e2a\u6307\u6807\uff1aQPS\uff08\u6bcf\u79d2\u67e5\u8be2\u6570\uff09\u3001\u5e73\u5747\u5ef6\u8fdf\u3001P95 \u5ef6\u8fdf\u3001\u5931\u8d25\u8bf7\u6c42\u6570\u3002\u6bd4\u5982 QPS \u4ece 3000 \u63d0\u5230 4200\uff0c\u4f46 P95 \u4ece 180ms \u62c9\u9ad8\u5230 700ms\uff0c\u8bf4\u660e\u541e\u5410\u4e0a\u53bb\u4e86\uff0c\u5c3e\u5ef6\u8fdf\u5374\u53d8\u5dee\uff0c\u7ebf\u4e0a\u4f53\u9a8c\u672a\u5fc5\u66f4\u597d\u3002\u914d\u5408 <code>htop<\/code>\u3001<code>vmstat<\/code> \u548c Nginx \u9519\u8bef\u65e5\u5fd7\u4e00\u8d77\u770b\uff0c\u624d\u80fd\u5224\u65ad\u662f\u4e0d\u662f\u628a\u538b\u529b\u8f6c\u79fb\u5230\u4e86 CPU\u3001\u5185\u5b58\u6216\u540e\u7aef\u670d\u52a1\u3002<\/p>\n<p>\u5982\u679c\u4f60\u4f7f\u7528\u4e91\u670d\u52a1\u5668\uff08\u57fa\u4e8e\u865a\u62df\u5316\u6280\u672f\u63d0\u4f9b\u7684\u5f39\u6027\u8ba1\u7b97\u8d44\u6e90\uff09\uff0c\u8fd8\u8981\u786e\u8ba4\u5b9e\u4f8b\u7684 CPU \u79ef\u5206\u3001\u78c1\u76d8 IOPS\uff08\u6bcf\u79d2\u8f93\u5165\u8f93\u51fa\u6b21\u6570\uff09\u548c\u7f51\u7edc\u5e26\u5bbd\uff08\u5355\u4f4d\u65f6\u95f4\u5185\u53ef\u4f20\u8f93\u7684\u6570\u636e\u91cf\uff09\u662f\u5426\u6709\u5e73\u53f0\u9650\u5236\u3002Nginx \u53c2\u6570\u53ea\u80fd\u63d0\u5347\u8f6f\u4ef6\u5c42\u6548\u7387\uff0c\u4e0d\u80fd\u7a81\u7834\u5e95\u5c42\u8d44\u6e90\u4e0a\u9650\u3002Hostease \u7684\u76f8\u5173\u4e3b\u673a\u65b9\u6848\u9002\u5408\u9700\u8981\u7a33\u5b9a\u8d44\u6e90\u548c\u8fd0\u7ef4\u652f\u6301\u7684\u4e1a\u52a1\u7ad9\u70b9\uff0c\u4f46\u5177\u4f53\u89c4\u683c\u4ecd\u5e94\u4ee5\u538b\u6d4b\u7ed3\u679c\u548c\u4e1a\u52a1\u5cf0\u503c\u4e3a\u4f9d\u636e\u3002<\/p>\n<h2>\u5e38\u89c1\u8bef\u533a\uff1a\u8fd9\u4e9b\u6539\u6cd5\u770b\u8d77\u6765\u52e4\u5feb\uff0c\u5b9e\u9645\u5bb9\u6613\u53cd\u566c<\/h2>\n<p>\u5b8c\u6210\u57fa\u7ebf\u548c\u538b\u6d4b\u540e\uff0c\u518d\u56de\u5934\u770b\u5f88\u591a\u201c\u8c03\u4f18\u5efa\u8bae\u201d\uff0c\u4f60\u4f1a\u53d1\u73b0\u5b83\u4eec\u53ea\u6709\u5728\u7279\u5b9a\u6761\u4ef6\u4e0b\u624d\u6210\u7acb\u3002\u4e0b\u9762\u51e0\u7c7b\u6539\u6cd5\u5c24\u5176\u9700\u8981\u8c28\u614e\uff1a<\/p>\n<ul>\n<li>\u628a <code>worker_processes<\/code> \u8bbe\u5f97\u8fdc\u9ad8\u4e8e CPU \u6838\u5fc3\u6570\uff1a\u5bb9\u6613\u589e\u52a0\u4e0a\u4e0b\u6587\u5207\u6362\uff0c4 \u6838\u673a\u5668\u8bbe 32 \u901a\u5e38\u6ca1\u6709\u6536\u76ca\u3002<\/li>\n<li>\u65e0\u9650\u653e\u5927 <code>worker_connections<\/code>\uff1a\u5982\u679c\u7cfb\u7edf\u6587\u4ef6\u63cf\u8ff0\u7b26\u548c\u5185\u5b58\u6ca1\u6709\u540c\u6b65\u8c03\u6574\uff0c\u53ea\u4f1a\u5236\u9020\u65b0\u7684\u9650\u5236\u70b9\u3002<\/li>\n<li>\u628a gzip \u7b49\u7ea7\u76f4\u63a5\u8bbe\u4e3a 9\uff1a\u76f8\u6bd4\u7b49\u7ea7 4\uff0c\u538b\u7f29\u7387\u901a\u5e38\u53ea\u591a 2%-5%\uff0cCPU \u5f00\u9500\u5374\u53ef\u80fd\u660e\u663e\u589e\u52a0\u3002<\/li>\n<li>\u53ea\u770b\u5e73\u5747\u54cd\u5e94\u65f6\u95f4\uff1a\u5e73\u5747\u503c\u4f1a\u63a9\u76d6 P95\/P99 \u5c3e\u5ef6\u8fdf\uff0c\u7ebf\u4e0a\u7528\u6237\u66f4\u5bb9\u6613\u611f\u53d7\u5230\u5c3e\u90e8\u6162\u8bf7\u6c42\u3002<\/li>\n<li>\u5ffd\u7565\u540e\u7aef\u8fde\u63a5\u6c60\uff1aNginx \u6b63\u5e38\u4e0d\u4ee3\u8868 PHP-FPM\u3001\u6570\u636e\u5e93\u6216\u5e94\u7528\u5c42\u6ca1\u6709\u6392\u961f\u3002<\/li>\n<\/ul>\n<p>\u66f4\u7a33\u59a5\u7684\u505a\u6cd5\u662f\u628a Nginx \u6392\u969c\u5f53\u6210\u4e00\u6761\u94fe\u8def\uff1a\u5165\u53e3\u8fde\u63a5\u5bb9\u91cf\u3001\u4ee3\u7406\u7f13\u51b2\u3001\u540e\u7aef\u8fde\u63a5\u590d\u7528\u3001\u7cfb\u7edf\u8d44\u6e90\u4e0a\u9650\u9010\u6bb5\u786e\u8ba4\u3002\u8fd9\u6837\u5373\u4f7f\u95ee\u9898\u4e0d\u5728 Nginx\uff0c\u4e5f\u80fd\u5feb\u901f\u6392\u9664\u5b83\uff0c\u907f\u514d\u5728\u540c\u4e00\u7ec4\u53c2\u6570\u4e0a\u53cd\u590d\u8bd5\u9519\u3002<\/p>\n<h2>\u603b\u7ed3\uff1a\u6309\u8bc1\u636e\u8c03\u4f18\uff0c\u800c\u4e0d\u662f\u6309\u6a21\u677f\u8c03\u4f18<\/h2>\n<p>Nginx \u9ad8\u5e76\u53d1\u6392\u969c\u7684\u6838\u5fc3\u5efa\u8bae\u5f88\u7b80\u5355\uff1a\u5148\u770b\u65e5\u5fd7\u548c\u8d44\u6e90\u66f2\u7ebf\uff0c\u518d\u6539\u53c2\u6570\uff1b\u5148\u786e\u8ba4 worker \u662f\u5426\u89e6\u9876\uff0c\u518d\u68c0\u67e5\u7f13\u51b2\u533a\u662f\u5426\u5199\u76d8\uff0c\u6700\u540e\u9a8c\u8bc1 keepalive \u662f\u5426\u771f\u6b63\u590d\u7528\u3002\u6bcf\u6b21\u53ea\u4fee\u6539\u4e00\u7ec4\u914d\u7f6e\uff0c\u7528\u76f8\u540c\u538b\u6d4b\u547d\u4ee4\u8bb0\u5f55 QPS\u3001P95 \u5ef6\u8fdf\u548c\u5931\u8d25\u8bf7\u6c42\u6570\uff0c\u624d\u80fd\u5224\u65ad\u6539\u52a8\u662f\u5426\u6709\u6548\u3002<\/p>\n<p>\u5982\u679c\u4f60\u9700\u8981\u7ed9\u7ebf\u4e0a\u7ad9\u70b9\u505a\u4e00\u6b21\u7a33\u59a5\u7684\u4f18\u5316\uff0c\u53ef\u4ee5\u6309\u672c\u6587\u987a\u5e8f\u5efa\u7acb\u57fa\u7ebf\uff0c\u5e76\u628a\u6d4b\u8bd5\u7ed3\u679c\u4fdd\u5b58\u6210\u7248\u672c\u8bb0\u5f55\u3002\u5bf9\u4e8e\u8bbf\u95ee\u91cf\u589e\u957f\u660e\u663e\u3001\u8d44\u6e90\u5df2\u7ecf\u63a5\u8fd1\u4e0a\u9650\u7684\u7f51\u7ad9\uff0c\u53ef\u4ee5\u8003\u8651\u628a Nginx 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