{"id":76086,"date":"2024-10-16T03:44:14","date_gmt":"2024-10-15T19:44:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76086\/"},"modified":"2024-10-16T03:44:14","modified_gmt":"2024-10-15T19:44:14","slug":"mysql%e5%85%a9%e9%a0%85%e6%80%a7%e8%83%bd%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%b8%ac%e8%a9%a6%e6%b7%ba%e8%ab%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76086\/","title":{"rendered":"MySQL\u5169\u9805\u6027\u80fd\u7684\u57fa\u672c\u6e2c\u8a66\u6dfa\u8ac7"},"content":{"rendered":"<h1 id=\"mysql%e5%85%a9%e9%a0%85%e6%80%a7%e8%83%bd%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%b8%ac%e8%a9%a6%e6%b7%ba%e8%ab%87-dOHpMexbNb\">MySQL\u5169\u9805\u6027\u80fd\u7684\u57fa\u672c\u6e2c\u8a66\u6dfa\u8ac7<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cMySQL\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u70ba\u4e86\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u9ad8\u6548\u904b\u884c\uff0c\u9032\u884c\u6027\u80fd\u6e2c\u8a66\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u63a2\u8a0eMySQL\u7684\u5169\u9805\u6027\u80fd\u6e2c\u8a66\uff1a\u67e5\u8a62\u6027\u80fd\u6e2c\u8a66\u548c\u4e26\u767c\u6027\u80fd\u6e2c\u8a66\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u57fa\u672c\u7684\u6e2c\u8a66\u65b9\u6cd5\u548c\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd%e6%b8%ac%e8%a9%a6-dOHpMexbNb\">\u67e5\u8a62\u6027\u80fd\u6e2c\u8a66<\/h2>\n<p>\u67e5\u8a62\u6027\u80fd\u6e2c\u8a66\u4e3b\u8981\u7528\u65bc\u8a55\u4f30\u6578\u64da\u5eab\u5728\u57f7\u884c\u67e5\u8a62\u6642\u7684\u6548\u7387\u3002\u9019\u985e\u6e2c\u8a66\u901a\u5e38\u6d89\u53ca\u5230\u67e5\u8a62\u7684\u57f7\u884c\u6642\u9593\u3001\u8cc7\u6e90\u6d88\u8017\u4ee5\u53ca\u67e5\u8a62\u7d50\u679c\u7684\u6e96\u78ba\u6027\u7b49\u65b9\u9762\u3002<\/p>\n<h3 id=\"%e6%b8%ac%e8%a9%a6%e6%96%b9%e6%b3%95-dOHpMexbNb\">\u6e2c\u8a66\u65b9\u6cd5<\/h3>\n<ul>\n<li><strong>EXPLAIN\u8a9e\u53e5\uff1a<\/strong>\u4f7f\u7528EXPLAIN\u8a9e\u53e5\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u4e86\u89e3MySQL\u5982\u4f55\u57f7\u884c\u67e5\u8a62\u3002\u9019\u500b\u8a9e\u53e5\u6703\u8fd4\u56de\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u5305\u62ec\u4f7f\u7528\u7684\u7d22\u5f15\u3001\u8868\u7684\u8a2a\u554f\u9806\u5e8f\u7b49\u4fe1\u606f\u3002<\/li>\n<li><strong>\u67e5\u8a62\u57f7\u884c\u6642\u9593\uff1a<\/strong>\u53ef\u4ee5\u4f7f\u7528MySQL\u7684\u5167\u5efa\u51fd\u6578\u5982NOW()\u4f86\u8a08\u7b97\u67e5\u8a62\u7684\u57f7\u884c\u6642\u9593\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre><code>SELECT NOW(); -- \u7372\u53d6\u7576\u524d\u6642\u9593\nSELECT * FROM your_table WHERE condition; -- \u57f7\u884c\u67e5\u8a62\nSELECT NOW(); -- \u518d\u6b21\u7372\u53d6\u7576\u524d\u6642\u9593\n<\/code><\/pre>\n<p>\u901a\u904e\u6bd4\u8f03\u5169\u6b21\u7372\u53d6\u7684\u6642\u9593\uff0c\u53ef\u4ee5\u8a08\u7b97\u51fa\u67e5\u8a62\u7684\u57f7\u884c\u6642\u9593\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b-dOHpMexbNb\">\u793a\u4f8b<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u8868\uff0c\u5305\u542b\u7528\u6236\u7684\u57fa\u672c\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u67e5\u8a62\u6027\u80fd\u6e2c\u8a66\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>EXPLAIN SELECT * FROM users WHERE age &gt; 30;\n<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u57f7\u884c\u8a08\u5283\uff0c\u5e6b\u52a9\u6211\u5011\u4e86\u89e3\u662f\u5426\u9700\u8981\u5c0d\u201cage\u201d\u5b57\u6bb5\u5efa\u7acb\u7d22\u5f15\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e4%b8%a6%e7%99%bc%e6%80%a7%e8%83%bd%e6%b8%ac%e8%a9%a6-dOHpMexbNb\">\u4e26\u767c\u6027\u80fd\u6e2c\u8a66<\/h2>\n<p>\u4e26\u767c\u6027\u80fd\u6e2c\u8a66\u4e3b\u8981\u7528\u65bc\u8a55\u4f30\u6578\u64da\u5eab\u5728\u591a\u500b\u7528\u6236\u540c\u6642\u8a2a\u554f\u6642\u7684\u8868\u73fe\u3002\u9019\u985e\u6e2c\u8a66\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u6f5b\u5728\u7684\u74f6\u9838\uff0c\u4e26\u78ba\u4fdd\u6578\u64da\u5eab\u80fd\u5920\u8655\u7406\u9ad8\u8ca0\u8f09\u60c5\u6cc1\u3002<\/p>\n<h3 id=\"%e6%b8%ac%e8%a9%a6%e6%96%b9%e6%b3%95-dOHpMexbNb\">\u6e2c\u8a66\u65b9\u6cd5<\/h3>\n<ul>\n<li><strong>\u4f7f\u7528\u8ca0\u8f09\u6e2c\u8a66\u5de5\u5177\uff1a<\/strong>\u53ef\u4ee5\u4f7f\u7528\u5de5\u5177\u5982Apache JMeter\u6216SysBench\u4f86\u6a21\u64ec\u591a\u500b\u7528\u6236\u540c\u6642\u8a2a\u554f\u6578\u64da\u5eab\u7684\u60c5\u6cc1\u3002<\/li>\n<li><strong>\u76e3\u63a7\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\uff1a<\/strong>\u5728\u9032\u884c\u4e26\u767c\u6e2c\u8a66\u6642\uff0c\u61c9\u8a72\u540c\u6642\u76e3\u63a7CPU\u3001\u5167\u5b58\u548c\u78c1\u789fI\/O\u7b49\u8cc7\u6e90\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u4ee5\u4fbf\u5206\u6790\u6027\u80fd\u74f6\u9838\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b-dOHpMexbNb\">\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528SysBench\u9032\u884c\u4e26\u767c\u6027\u80fd\u6e2c\u8a66\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>sysbench --test=oltp --oltp-table-size=10000 --mysql-host=localhost --mysql-user=root --mysql-password=your_password prepare\nsysbench --test=oltp --oltp-table-size=10000 --mysql-host=localhost --mysql-user=root --mysql-password=your_password run\n<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c07\u6e96\u5099\u4e00\u500b\u5305\u542b10000\u689d\u8a18\u9304\u7684\u8868\uff0c\u7136\u5f8c\u9032\u884c\u4e26\u767c\u6e2c\u8a66\uff0c\u5e6b\u52a9\u6211\u5011\u8a55\u4f30\u6578\u64da\u5eab\u5728\u9ad8\u8ca0\u8f09\u4e0b\u7684\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-dOHpMexbNb\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u5c0dMySQL\u7684\u67e5\u8a62\u6027\u80fd\u548c\u4e26\u767c\u6027\u80fd\u9032\u884c\u57fa\u672c\u6e2c\u8a66\uff0c\u6211\u5011\u53ef\u4ee5\u7372\u5f97\u6709\u95dc\u6578\u64da\u5eab\u904b\u884c\u72c0\u6cc1\u7684\u91cd\u8981\u4fe1\u606f\u3002\u9019\u4e9b\u6e2c\u8a66\u4e0d\u50c5\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u512a\u5316\u67e5\u8a62\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u5eab\u5728\u9ad8\u8ca0\u8f09\u60c5\u6cc1\u4e0b\u7684\u7a69\u5b9a\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u90fd\u80fd\u70ba\u60a8\u7684\u6578\u64da\u5eab\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u5169\u9805\u6027\u80fd\u7684\u57fa\u672c\u6e2c\u8a66\uff0c\u4e86\u89e3\u5982\u4f55\u8a55\u4f30\u6578\u64da\u5eab\u6548\u80fd\u53ca\u512a\u5316\u7b56\u7565\uff0c\u63d0\u5347\u7cfb\u7d71\u904b\u884c\u6548\u7387\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-76086","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76086","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=76086"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76086\/revisions"}],"predecessor-version":[{"id":76087,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76086\/revisions\/76087"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76086"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76086"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76086"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}