{"id":29966,"date":"2026-04-03T18:00:00","date_gmt":"2026-04-03T10:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=29966"},"modified":"2026-04-08T12:58:07","modified_gmt":"2026-04-08T04:58:07","slug":"ecommerce-server-cpu-spike-troubleshooting-guide","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/tutorials\/ecommerce-server-cpu-spike-troubleshooting-guide\/","title":{"rendered":"\u7535\u5546\u7f51\u7ad9\u670d\u52a1\u5668 CPU \u6253\u6ee1\u6392\u67e5\uff1aNginx\u3001PHP-FPM \u4e0e MySQL \u4e3b\u673a\u4fa7\u8054\u8c03"},"content":{"rendered":"<p><img decoding=\"async\" alt=\"\u7535\u5546\u7f51\u7ad9\u670d\u52a1\u5668 CPU \u6253\u6ee1\u6392\u67e5\u5c01\u9762\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/04\/ecommerce-server-cpu-spike-troubleshooting-guide-cover.webp\" \/><\/p>\n<h2>\u95ee\u9898\u573a\u666f\uff1aCPU \u7a81\u7136\u6253\u6ee1\uff0c\u7f51\u7ad9\u54cd\u5e94\u53d8\u6162<\/h2>\n<p>\u7535\u5546\u7f51\u7ad9\u670d\u52a1\u5668 CPU \u5360\u7528\u7387\u8fc7\u9ad8\u600e\u4e48\u529e\uff1f\u672c\u6307\u5357\u5e2e\u52a9\u4f60\u5feb\u901f\u5b9a\u4f4d Nginx\u3001PHP-FPM \u548c MySQL \u7684\u6027\u80fd\u74f6\u9888\uff0c\u5e76\u63d0\u4f9b\u53ef\u843d\u5730\u7684\u89e3\u51b3\u65b9\u6848\u3002\u5982\u679c\u4f60\u9047\u5230 CPU \u98d9\u5347\u5230 90% \u4ee5\u4e0a\u3001\u7f51\u7ad9\u54cd\u5e94\u53d8\u6162\u7684\u95ee\u9898\uff0c\u6309\u7167\u672c\u6587\u7684\u6392\u67e5\u6d41\u7a0b\u53ef\u4ee5\u9ad8\u6548\u89e3\u51b3\u3002<\/p>\n<h2>\u7b2c\u4e00\u6b65\uff1a\u5feb\u901f\u786e\u8ba4 CPU \u8d1f\u8f7d\u6765\u6e90<\/h2>\n<p>\u5f53\u53d1\u73b0 CPU \u5360\u7528\u7387\u5f02\u5e38\u65f6\uff0c\u5148\u786e\u8ba4\u8d1f\u8f7d\u7684\u5177\u4f53\u6765\u6e90\uff1a<\/p>\n<pre><code class=\"language-bash\">top -bn1 | head -20\nps aux --sort=-%cpu | head -20\nuptime\n<\/code><\/pre>\n<p>\u901a\u8fc7 <code>top<\/code> \u547d\u4ee4\u67e5\u770b <code>%Cpu(s)<\/code> \u6307\u6807\uff1a<br \/>\n&#8211; <code>us<\/code>\uff08user\uff09\uff1a\u7528\u6237\u7a7a\u95f4\u8fdb\u7a0b\u6d88\u8017\u7684 CPU\uff0c\u901a\u5e38\u662f PHP \u7b49\u5e94\u7528\u8fdb\u7a0b<br \/>\n&#8211; <code>sy<\/code>\uff08system\uff09\uff1a\u5185\u6838\u7a7a\u95f4\u6d88\u8017\u7684 CPU<br \/>\n&#8211; <code>wa<\/code>\uff08iowait\uff09\uff1a\u7b49\u5f85 I\/O \u7684\u65f6\u95f4<\/p>\n<p><strong>\u5173\u952e\u5224\u65ad<\/strong>\uff1a\u5982\u679c <code>us<\/code> \u8fc7\u9ad8\uff08&gt;70%\uff09\uff0c\u91cd\u70b9\u6392\u67e5 PHP-FPM\uff1b\u5982\u679c <code>wa<\/code> \u8fc7\u9ad8\uff08&gt;40%\uff09\uff0c\u68c0\u67e5\u78c1\u76d8\u6027\u80fd\u6216\u6570\u636e\u5e93\u67e5\u8be2\u3002<\/p>\n<p><img decoding=\"async\" alt=\"\u7cfb\u7edf\u8d1f\u8f7d\u76d1\u63a7\u9762\u677f\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/04\/ecommerce-server-cpu-spike-troubleshooting-guide-system-monitoring.webp\" \/><\/p>\n<h2>\u7b2c\u4e8c\u6b65\uff1aNginx \u5c42\u6392\u67e5\u4e0e\u4f18\u5316<\/h2>\n<p>Nginx \u4f5c\u4e3a\u53cd\u5411\u4ee3\u7406\uff0c\u901a\u5e38 CPU \u5360\u7528\u4e0d\u9ad8\uff0c\u4f46\u914d\u7f6e\u4e0d\u5f53\u4e5f\u53ef\u80fd\u6210\u4e3a\u74f6\u9888\u3002<\/p>\n<h3>2.1 \u68c0\u67e5 Nginx \u72b6\u6001<\/h3>\n<pre><code class=\"language-bash\">ps aux | grep nginx\nnetstat -an | grep :80 | wc -l\ntail -100 \/var\/log\/nginx\/error.log\n<\/code><\/pre>\n<h3>2.2 \u4f18\u5316 Nginx \u914d\u7f6e<\/h3>\n<p>\u906d\u9047\u9ad8\u5e76\u53d1\u653b\u51fb\u6d41\u91cf\u65f6\uff0cNginx \u4f18\u5316\u548c WAF \u9632\u62a4\u9700\u8981\u914d\u5408\u8fdb\u884c\uff0c\u53ef\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/cc-attack-emergency-waf-rate-limit-origin-protection\/\" class=\"broken_link\">CC \u653b\u51fb\u9632\u62a4\u5b8c\u6574\u6307\u5357\uff1aWAF \u89c4\u5219\u3001\u9650\u901f\u4e0e\u6e90\u7ad9\u5e94\u6025\u914d\u7f6e<\/a> \u540c\u6b65\u90e8\u7f72\u9650\u901f\u89c4\u5219\u3002<\/p>\n<pre><code class=\"language-nginx\">worker_processes auto;\nworker_rlimit_nofile 65535;\n\nevents {\n    worker_connections 4096;\n    multi_accept on;\n    use epoll;\n}\n\nhttp {\n    proxy_cache_path \/var\/cache\/nginx levels=1:2 keys_zone=my_cache:10m max_size=1g inactive=60m;\n    proxy_connect_timeout 60s;\n    proxy_send_timeout 60s;\n    proxy_read_timeout 60s;\n    gzip on;\n}\n<\/code><\/pre>\n<p>\u786e\u4fdd\u9759\u6001\u8d44\u6e90\u7531 Nginx \u76f4\u63a5\u5904\u7406\uff1a<\/p>\n<pre><code class=\"language-nginx\">location ~* \\.(jpg|jpeg|png|gif|ico|css|js)$ {\n    expires 7d;\n    access_log off;\n}\n<\/code><\/pre>\n<h2>\u7b2c\u4e09\u6b65\uff1aPHP-FPM \u6df1\u5ea6\u6392\u67e5\u4e0e\u8c03\u4f18<\/h2>\n<p>\u5bf9\u4e8e PHP \u7535\u5546\u7f51\u7ad9\uff0cPHP-FPM \u901a\u5e38\u662f CPU \u5360\u7528\u7684\u4e3b\u8981\u539f\u56e0\u3002<\/p>\n<h3>3.1 \u67e5\u770b PHP-FPM \u72b6\u6001<\/h3>\n<pre><code class=\"language-bash\">ps aux | grep php-fpm | wc -l\ntail -100 \/var\/log\/php-fpm\/slow.log\n<\/code><\/pre>\n<p>\u6162\u65e5\u5fd7\u663e\u793a\u54ea\u4e2a\u811a\u672c\u6267\u884c\u6162\u3001\u8c03\u7528\u4e86\u54ea\u4e9b\u51fd\u6570\u3001\u6570\u636e\u5e93\u67e5\u8be2\u8017\u65f6\u3002<\/p>\n<h3>3.2 \u4f18\u5316 PHP-FPM \u914d\u7f6e<\/h3>\n<pre><code class=\"language-ini\">pm = dynamic\npm.max_children = 50\npm.start_servers = 10\npm.min_spare_servers = 5\npm.max_spare_servers = 20\npm.max_requests = 500\nrequest_terminate_timeout = 60s\nrequest_slowlog_timeout = 5s\n<\/code><\/pre>\n<p><strong>\u8ba1\u7b97\u5efa\u8bae<\/strong>\uff1a8GB \u5185\u5b58\u670d\u52a1\u5668\uff0c\u5355\u4e2a\u8fdb\u7a0b\u7ea6 80MB\uff0c<code>pm.max_children<\/code> \u5efa\u8bae\u8bbe\u7f6e\u4e3a 50-70\u3002<\/p>\n<h3>3.3 \u4ee3\u7801\u5c42\u4f18\u5316<\/h3>\n<ol>\n<li>\u51cf\u5c11\u6570\u636e\u5e93\u67e5\u8be2\u6b21\u6570\uff0c\u4f7f\u7528\u7f13\u5b58<\/li>\n<li>\u907f\u514d\u5728\u5faa\u73af\u4e2d\u67e5\u8be2\u6570\u636e\u5e93<\/li>\n<li>\u5f00\u542f PHP OPcache \u63d0\u5347\u6027\u80fd<\/li>\n<\/ol>\n<pre><code class=\"language-php\">opcache.enable=1\nopcache.memory_consumption=256\nopcache.max_accelerated_files=10000\n<\/code><\/pre>\n<p><img decoding=\"async\" alt=\"PHP-FPM \u8fdb\u7a0b\u76d1\u63a7\u5bf9\u6bd4\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/04\/ecommerce-server-cpu-spike-troubleshooting-guide-php-fpm.webp\" \/><\/p>\n<h2>\u7b2c\u56db\u6b65\uff1aMySQL \u6027\u80fd\u5206\u6790\u4e0e\u4f18\u5316<\/h2>\n<p>\u6570\u636e\u5e93\u67e5\u8be2\u5f80\u5f80\u662f CPU \u6253\u6ee1\u7684\u6839\u672c\u539f\u56e0\u3002<\/p>\n<h3>4.1 \u67e5\u770b MySQL \u8d1f\u8f7d<\/h3>\n<pre><code class=\"language-bash\">mysql -e &quot;SHOW PROCESSLIST;&quot;\ntail -100 \/var\/log\/mysql\/slow.log\n<\/code><\/pre>\n<h3>4.2 \u5f00\u542f\u6162\u67e5\u8be2\u65e5\u5fd7<\/h3>\n<pre><code class=\"language-sql\">SET GLOBAL slow_query_log = 'ON';\nSET GLOBAL long_query_time = 2;\n<\/code><\/pre>\n<p>\u5206\u6790\u6162\u67e5\u8be2\uff0c\u6dfb\u52a0\u7d22\u5f15\u4f18\u5316\uff1a<\/p>\n<pre><code class=\"language-sql\">ALTER TABLE orders ADD INDEX idx_customer_status (customer_id, status);\n<\/code><\/pre>\n<h3>4.3 \u4f18\u5316 MySQL \u914d\u7f6e<\/h3>\n<pre><code class=\"language-ini\">[mysqld]\nmax_connections = 500\ninnodb_buffer_pool_size = 4G\ninnodb_buffer_pool_instances = 8\ninnodb_log_file_size = 512M\ntmp_table_size = 256M\nmax_heap_table_size = 256M\n<\/code><\/pre>\n<h3>4.4 \u4f7f\u7528 EXPLAIN \u5206\u6790<\/h3>\n<pre><code class=\"language-sql\">EXPLAIN SELECT * FROM orders WHERE customer_id = 12345;\n<\/code><\/pre>\n<p>\u91cd\u70b9\u5173\u6ce8\uff1atype \u662f\u5426\u4e3a ALL\uff08\u5168\u8868\u626b\u63cf\uff09\u3001key \u662f\u5426\u4f7f\u7528\u7d22\u5f15\u3001rows \u626b\u63cf\u884c\u6570\u3002<\/p>\n<p><img decoding=\"async\" alt=\"MySQL \u67e5\u8be2\u4f18\u5316\u6d41\u7a0b\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/04\/ecommerce-server-cpu-spike-troubleshooting-guide-mysql.webp\" \/><\/p>\n<h2>\u7b2c\u4e94\u6b65\uff1a\u7efc\u5408\u6392\u67e5\u6d41\u7a0b<\/h2>\n<ol>\n<li>\u76d1\u63a7\u544a\u8b66\uff1a\u8bbe\u7f6e CPU \u9608\u503c\u544a\u8b66\uff0880% \u6301\u7eed 5 \u5206\u949f\uff09<\/li>\n<li>\u5feb\u901f\u5b9a\u4f4d\uff1a\u4f7f\u7528 <code>top<\/code>\u3001<code>ps<\/code> \u786e\u5b9a\u5360\u7528 CPU \u7684\u8fdb\u7a0b<\/li>\n<li>\u65e5\u5fd7\u5206\u6790\uff1a\u67e5\u770b Nginx\u3001PHP-FPM\u3001MySQL \u65e5\u5fd7\uff1b\u82e5\u53d1\u73b0\u78c1\u76d8 IO \u7b49\u5f85\uff08<code>wa<\/code>\uff09\u6301\u7eed\u504f\u9ad8\uff0c\u53ef\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/vps-disk-io-jitter-storage-baseline-performance\/\">VPS \u670d\u52a1\u5668\u78c1\u76d8 IO \u6296\u52a8\u5904\u7406\uff1a\u5b58\u50a8\u57fa\u7ebf\u6d4b\u8bd5\u4e0e\u4e3b\u673a\u6027\u80fd\u6cbb\u7406<\/a> \u505a\u5b58\u50a8\u5c42\u6392\u67e5<\/li>\n<li>\u5b9e\u65bd\u4f18\u5316\uff1a\u8c03\u6574\u914d\u7f6e\u6216\u4f18\u5316\u4ee3\u7801<\/li>\n<li>\u9a8c\u8bc1\u6548\u679c\uff1a\u76d1\u63a7\u4f18\u5316\u540e\u7684 CPU \u4f7f\u7528\u7387<\/li>\n<\/ol>\n<h3>\u63a8\u8350\u76d1\u63a7\u5de5\u5177<\/h3>\n<ul>\n<li><strong>htop<\/strong>\uff1a\u76f4\u89c2\u7684\u8fdb\u7a0b\u76d1\u63a7<\/li>\n<li><strong>iotop<\/strong>\uff1a\u76d1\u63a7\u78c1\u76d8 I\/O<\/li>\n<li><strong>nethogs<\/strong>\uff1a\u76d1\u63a7\u7f51\u7edc\u5e26\u5bbd\uff08\u7f51\u7edc\u6570\u636e\u4f20\u8f93\u80fd\u529b\uff09<\/li>\n<li><strong>PMM<\/strong>\uff1aMySQL \u6027\u80fd\u76d1\u63a7<\/li>\n<\/ul>\n<h2>\u5e38\u89c1\u95ee\u9898\u89e3\u51b3\u65b9\u6848<\/h2>\n<h3>\u95ee\u9898 1\uff1aPHP-FPM \u8fdb\u7a0b\u6570\u8fc7\u591a<\/h3>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong>\uff1a<br \/>\n1. \u6839\u636e\u5185\u5b58\u91cd\u65b0\u8ba1\u7b97 <code>pm.max_children<\/code><br \/>\n2. \u68c0\u67e5\u6162\u8bf7\u6c42<br \/>\n3. \u4f7f\u7528 <code>pm = ondemand<\/code> \u6a21\u5f0f<\/p>\n<h3>\u95ee\u9898 2\uff1aMySQL \u67e5\u8be2\u5bfc\u81f4\u9ad8\u8d1f\u8f7d<\/h3>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong>\uff1a<br \/>\n1. \u5206\u6790\u6162\u67e5\u8be2\u65e5\u5fd7\uff0c\u6dfb\u52a0\u7d22\u5f15<br \/>\n2. \u4f18\u5316\u67e5\u8be2\u8bed\u53e5<br \/>\n3. \u589e\u52a0 <code>innodb_buffer_pool_size<\/code><\/p>\n<h3>\u95ee\u9898 3\uff1aNginx \u8f6c\u53d1\u8fc7\u591a\u8bf7\u6c42<\/h3>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong>\uff1a<br \/>\n1. \u786e\u4fdd\u9759\u6001\u8d44\u6e90\u76f4\u63a5\u5904\u7406<br \/>\n2. \u5f00\u542f Nginx \u7f13\u5b58<br \/>\n3. \u4f7f\u7528 CDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u52a0\u901f<\/p>\n<h2>\u603b\u7ed3\u4e0e\u4e0b\u4e00\u6b65\u884c\u52a8\u5efa\u8bae<\/h2>\n<p>\u901a\u8fc7\u7cfb\u7edf\u5316\u7684\u6392\u67e5\u6d41\u7a0b\uff0c\u4f60\u53ef\u4ee5\u5feb\u901f\u5b9a\u4f4d\u7535\u5546\u7f51\u7ad9 CPU \u6253\u6ee1\u7684\u6839\u56e0\u3002\u672c\u6587\u6db5\u76d6\u4e86\u4ece Nginx \u5230 PHP-FPM \u518d\u5230 MySQL \u7684\u5b8c\u6574\u94fe\u8def\u3002<\/p>\n<p><strong>\u6838\u5fc3\u5efa\u8bae<\/strong>\uff1a<br \/>\n1. \u5efa\u7acb\u76d1\u63a7\u4f53\u7cfb\uff0c\u8bbe\u7f6e\u5b9e\u65f6\u544a\u8b66\uff08\u5efa\u8bae\u9608\u503c\uff1aCPU 80% \u6301\u7eed 5 \u5206\u949f\uff09<br \/>\n2. \u6bcf\u5468\u5ba1\u67e5\u6162\u65e5\u5fd7\uff0c\u8bc6\u522b\u6027\u80fd\u74f6\u9888<br \/>\n3. \u63d0\u524d\u89c4\u5212\u670d\u52a1\u5668\u6269\u5bb9\uff0c\u907f\u514d\u9ad8\u5cf0\u671f\u8d44\u6e90\u4e0d\u8db3\uff1b\u53ef\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/vps-dedicated-server-database-cache-architecture\/\">VPS \u4e0e\u72ec\u7acb\u670d\u52a1\u5668\u5206\u5c42\u90e8\u7f72\u6307\u5357\uff1a\u6570\u636e\u5e93\u5206\u79bb\u4e0e\u7f13\u5b58\u67b6\u6784<\/a> \u5236\u5b9a\u5206\u5c42\u6269\u5bb9\u65b9\u6848<br \/>\n4. \u4ee3\u7801\u53d1\u5e03\u524d\u8fdb\u884c\u6027\u80fd\u5ba1\u67e5\uff0c\u907f\u514d\u4f4e\u6548\u67e5\u8be2\u4e0a\u7ebf<\/p>\n<p><strong>\u63a8\u8350\u5de5\u5177<\/strong>\uff1a<br \/>\n&#8211; htop\uff1a\u76f4\u89c2\u7684\u8fdb\u7a0b\u76d1\u63a7\uff0c\u652f\u6301\u989c\u8272\u533a\u5206 CPU\/\u5185\u5b58\u5360\u7528<br \/>\n&#8211; iotop\uff1a\u76d1\u63a7\u78c1\u76d8 I\/O\uff0c\u8bc6\u522b\u8bfb\u5199\u74f6\u9888<br \/>\n&#8211; PMM\uff08Percona Monitoring and Management\uff09\uff1aMySQL \u6027\u80fd\u76d1\u63a7\u4e0e\u53ef\u89c6\u5316<\/p>\n<p>\u5982\u679c\u4f60\u9700\u8981\u66f4\u6df1\u5165\u7684<a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u4f18\u5316<\/a>\u670d\u52a1\uff0c\u53ef\u4ee5\u8003\u8651\u4e13\u4e1a\u7684\u8fd0\u7ef4\u652f\u6301\u3002\u5bf9\u4e8e\u7a33\u5b9a\u6027\u8981\u6c42\u8f83\u9ad8\u7684\u7535\u5546\u573a\u666f\uff0c\u5efa\u8bae\u9009\u62e9\u914d\u5907\u5b8c\u5584\u76d1\u63a7\u5de5\u5177\u7684 <a href=\"https:\/\/cn.hostease.com\/vps\/\">VPS<\/a>\uff08<a href=\"https:\/\/cn.hostease.com\/vps\/\">\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668<\/a>\uff09\u65b9\u6848\uff0c\u786e\u4fdd\u80fd\u591f\u5b9e\u65f6\u638c\u63e1\u670d\u52a1\u5668\u72b6\u6001\u3002<\/p>\n<p>\u603b\u7ed3\uff1a\u670d\u52a1\u5668 CPU \u4f18\u5316\u9700\u8981\u6301\u7eed\u76d1\u63a7\u548c\u8fed\u4ee3\u6539\u8fdb\u3002\u5efa\u8bae\u5148\u4ece\u76d1\u63a7\u544a\u8b66\u5165\u624b\uff0c\u518d\u9488\u5bf9\u74f6\u9888\u5b9e\u65bd\u4f18\u5316\uff0c\u6700\u540e\u9a8c\u8bc1\u6548\u679c\u3002\u66f4\u591a\u5173\u4e8e<a 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