{"id":171523,"date":"2024-11-07T03:27:18","date_gmt":"2024-11-06T19:27:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/171523\/"},"modified":"2024-11-07T03:27:19","modified_gmt":"2024-11-06T19:27:19","slug":"%e6%b7%ba%e6%9e%90%e5%a6%82%e4%bd%95%e5%ae%9a%e4%bd%8d%ef%bc%8c%e6%8e%92%e9%99%a4%e5%92%8c%e9%81%bf%e5%85%8dmysql%e6%80%a7%e8%83%bd%e6%95%85%e9%9a%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/171523\/","title":{"rendered":"\u6dfa\u6790\u5982\u4f55\u5b9a\u4f4d\uff0c\u6392\u9664\u548c\u907f\u514dMySQL\u6027\u80fd\u6545\u969c"},"content":{"rendered":"<h1 id=\"%e6%b7%ba%e6%9e%90%e5%a6%82%e4%bd%95%e5%ae%9a%e4%bd%8d%ef%bc%8c%e6%8e%92%e9%99%a4%e5%92%8c%e9%81%bf%e5%85%8dmysql%e6%80%a7%e8%83%bd%e6%95%85%e9%9a%9c-zmKeQCMgEP\">\u6dfa\u6790\u5982\u4f55\u5b9a\u4f4d\uff0c\u6392\u9664\u548c\u907f\u514dMySQL\u6027\u80fd\u6545\u969c<\/h1>\n<p>MySQL\u4f5c\u70ba\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u56e0\u5176\u9ad8\u6548\u6027\u548c\u9748\u6d3b\u6027\u800c\u53d7\u5230\u8a31\u591a\u4f01\u696d\u7684\u9752\u775e\u3002\u7136\u800c\uff0c\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\u548c\u7528\u6236\u8acb\u6c42\u7684\u589e\u52a0\uff0cMySQL\u7684\u6027\u80fd\u554f\u984c\u4e5f\u65e5\u76ca\u51f8\u986f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5b9a\u4f4d\u3001\u6392\u9664\u548c\u907f\u514dMySQL\u6027\u80fd\u6545\u969c\uff0c\u5e6b\u52a9\u7528\u6236\u63d0\u5347\u6578\u64da\u5eab\u7684\u904b\u884c\u6548\u7387\u3002<\/p>\n<h2 id=\"%e4%b8%80%e3%80%81%e6%80%a7%e8%83%bd%e6%95%85%e9%9a%9c%e7%9a%84%e5%b8%b8%e8%a6%8b%e8%a1%a8%e7%8f%be-zmKeQCMgEP\">\u4e00\u3001\u6027\u80fd\u6545\u969c\u7684\u5e38\u898b\u8868\u73fe<\/h2>\n<p>\u5728\u4f7f\u7528MySQL\u7684\u904e\u7a0b\u4e2d\uff0c\u6027\u80fd\u6545\u969c\u53ef\u80fd\u6703\u4ee5\u591a\u7a2e\u5f62\u5f0f\u51fa\u73fe\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u8868\u73fe\uff1a<\/p>\n<ul>\n<li>\u67e5\u8a62\u97ff\u61c9\u6642\u9593\u904e\u9577<\/li>\n<li>\u6578\u64da\u5eab\u9023\u63a5\u8d85\u6642<\/li>\n<li>\u9ad8CPU\u6216\u5167\u5b58\u4f7f\u7528\u7387<\/li>\n<li>\u9396\u7af6\u722d\u5c0e\u81f4\u7684\u6027\u80fd\u4e0b\u964d<\/li>\n<\/ul>\n<h2 id=\"%e4%ba%8c%e3%80%81%e5%ae%9a%e4%bd%8d%e6%80%a7%e8%83%bd%e6%95%85%e9%9a%9c-zmKeQCMgEP\">\u4e8c\u3001\u5b9a\u4f4d\u6027\u80fd\u6545\u969c<\/h2>\n<p>\u5b9a\u4f4dMySQL\u6027\u80fd\u6545\u969c\u7684\u7b2c\u4e00\u6b65\u662f\u6536\u96c6\u76f8\u95dc\u7684\u6027\u80fd\u6578\u64da\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u5de5\u5177\u548c\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e6%85%a2%e6%9f%a5%e8%a9%a2%e6%97%a5%e8%aa%8c-zmKeQCMgEP\">1. \u4f7f\u7528\u6162\u67e5\u8a62\u65e5\u8a8c<\/h3>\n<p>\u555f\u7528\u6162\u67e5\u8a62\u65e5\u8a8c\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u57f7\u884c\u6642\u9593\u904e\u9577\u7684\u67e5\u8a62\u3002\u901a\u904e\u5206\u6790\u9019\u4e9b\u67e5\u8a62\uff0c\u53ef\u4ee5\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002<\/p>\n<pre><code>SET GLOBAL slow_query_log = 'ON';\nSET GLOBAL long_query_time = 2; -- \u8a2d\u7f6e\u67e5\u8a62\u6642\u9593\u95be\u503c\u70ba2\u79d2\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e6%80%a7%e8%83%bd%e6%a8%a1%e5%bc%8f-zmKeQCMgEP\">2. \u4f7f\u7528\u6027\u80fd\u6a21\u5f0f<\/h3>\n<p>MySQL\u7684\u6027\u80fd\u6a21\u5f0f\uff08Performance Schema\uff09\u63d0\u4f9b\u4e86\u8a73\u7d30\u7684\u6027\u80fd\u6578\u64da\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u6df1\u5165\u4e86\u89e3\u6578\u64da\u5eab\u7684\u904b\u884c\u72c0\u6cc1\u3002<\/p>\n<pre><code>SELECT * FROM performance_schema.events_waits_summary_global_by_event_name;\n<\/code><\/pre>\n<h3 id=\"3-%e7%9b%a3%e6%8e%a7%e7%b3%bb%e7%b5%b1%e8%b3%87%e6%ba%90-zmKeQCMgEP\">3. \u76e3\u63a7\u7cfb\u7d71\u8cc7\u6e90<\/h3>\n<p>\u4f7f\u7528\u7cfb\u7d71\u76e3\u63a7\u5de5\u5177\uff08\u5982top\u3001htop\u3001iostat\u7b49\uff09\u4f86\u6aa2\u67e5CPU\u3001\u5167\u5b58\u548c\u78c1\u789fI\/O\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u9019\u6709\u52a9\u65bc\u5224\u65b7\u662f\u5426\u5b58\u5728\u8cc7\u6e90\u74f6\u9838\u3002<\/p>\n<h2 id=\"%e4%b8%89%e3%80%81%e6%8e%92%e9%99%a4%e6%80%a7%e8%83%bd%e6%95%85%e9%9a%9c-zmKeQCMgEP\">\u4e09\u3001\u6392\u9664\u6027\u80fd\u6545\u969c<\/h2>\n<p>\u5728\u5b9a\u4f4d\u5230\u6027\u80fd\u554f\u984c\u5f8c\uff0c\u63a5\u4e0b\u4f86\u662f\u6392\u9664\u6545\u969c\u7684\u904e\u7a0b\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2-zmKeQCMgEP\">1. \u512a\u5316\u67e5\u8a62<\/h3>\n<p>\u5c0d\u65bc\u6162\u67e5\u8a62\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u512a\u5316\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u7d22\u5f15\uff1a\u78ba\u4fdd\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u5217\u6709\u9069\u7576\u7684\u7d22\u5f15\u3002<\/li>\n<li>\u907f\u514dSELECT *\uff1a\u53ea\u9078\u64c7\u9700\u8981\u7684\u5217\uff0c\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u91cf\u3002<\/li>\n<li>\u4f7f\u7528JOIN\u800c\u975e\u5b50\u67e5\u8a62\uff1a\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0cJOIN\u7684\u6027\u80fd\u512a\u65bc\u5b50\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h3 id=\"2-%e8%aa%bf%e6%95%b4%e9%85%8d%e7%bd%ae%e5%8f%83%e6%95%b8-zmKeQCMgEP\">2. \u8abf\u6574\u914d\u7f6e\u53c3\u6578<\/h3>\n<p>\u6839\u64da\u5be6\u969b\u4f7f\u7528\u60c5\u6cc1\u8abf\u6574MySQL\u7684\u914d\u7f6e\u53c3\u6578\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>innodb_buffer_pool_size\uff1a\u589e\u52a0InnoDB\u7de9\u885d\u6c60\u7684\u5927\u5c0f\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li>max_connections\uff1a\u6839\u64da\u9700\u8981\u8abf\u6574\u6700\u5927\u9023\u63a5\u6578\u3002<\/li>\n<\/ul>\n<h3 id=\"3-%e5%ae%9a%e6%9c%9f%e7%b6%ad%e8%ad%b7-zmKeQCMgEP\">3. \u5b9a\u671f\u7dad\u8b77<\/h3>\n<p>\u5b9a\u671f\u9032\u884c\u6578\u64da\u5eab\u7dad\u8b77\uff0c\u5982\u91cd\u5efa\u7d22\u5f15\u548c\u6e05\u7406\u904e\u671f\u6578\u64da\uff0c\u53ef\u4ee5\u4fdd\u6301\u6578\u64da\u5eab\u7684\u9ad8\u6548\u904b\u884c\u3002<\/p>\n<h2 id=\"%e5%9b%9b%e3%80%81%e9%81%bf%e5%85%8d%e6%80%a7%e8%83%bd%e6%95%85%e9%9a%9c-zmKeQCMgEP\">\u56db\u3001\u907f\u514d\u6027\u80fd\u6545\u969c<\/h2>\n<p>\u70ba\u4e86\u907f\u514d\u672a\u4f86\u51fa\u73fe\u6027\u80fd\u6545\u969c\uff0c\u5efa\u8b70\u63a1\u53d6\u4ee5\u4e0b\u63aa\u65bd\uff1a<\/p>\n<ul>\n<li>\u5b9a\u671f\u76e3\u63a7\u6578\u64da\u5eab\u6027\u80fd\uff0c\u53ca\u6642\u767c\u73fe\u6f5b\u5728\u554f\u984c\u3002<\/li>\n<li>\u9032\u884c\u5bb9\u91cf\u898f\u5283\uff0c\u6839\u64da\u696d\u52d9\u589e\u9577\u9810\u6e2c\u8cc7\u6e90\u9700\u6c42\u3002<\/li>\n<li>\u4f7f\u7528\u8ca0\u8f09\u5747\u8861\u6280\u8853\uff0c\u5206\u6563\u8acb\u6c42\u4ee5\u6e1b\u5c11\u55ae\u4e00\u6578\u64da\u5eab\u7684\u58d3\u529b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-zmKeQCMgEP\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u6027\u80fd\u6545\u969c\u7684\u5b9a\u4f4d\u3001\u6392\u9664\u548c\u907f\u514d\u662f\u4e00\u500b\u7cfb\u7d71\u5316\u7684\u904e\u7a0b\u3002\u901a\u904e\u4f7f\u7528\u6162\u67e5\u8a62\u65e5\u8a8c\u3001\u6027\u80fd\u6a21\u5f0f\u548c\u7cfb\u7d71\u76e3\u63a7\u5de5\u5177\uff0c\u80fd\u5920\u6709\u6548\u5730\u8b58\u5225\u554f\u984c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u512a\u5316\u3002\u5b9a\u671f\u7684\u7dad\u8b77\u548c\u76e3\u63a7\u5247\u662f\u4fdd\u6301\u6578\u64da\u5eab\u9ad8\u6548\u904b\u884c\u7684\u95dc\u9375\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4ee5\u652f\u6301\u60a8\u7684MySQL\u6578\u64da\u5eab\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6dfa\u6790\u5982\u4f55\u5b9a\u4f4d\u3001\u6392\u9664\u548c\u907f\u514dMySQL\u6027\u80fd\u6545\u969c\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6548\u7387\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-171523","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171523","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=171523"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171523\/revisions"}],"predecessor-version":[{"id":171524,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171523\/revisions\/171524"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=171523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=171523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=171523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}