{"id":160781,"date":"2024-11-04T00:57:27","date_gmt":"2024-11-03T16:57:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160781\/"},"modified":"2024-11-04T00:57:28","modified_gmt":"2024-11-03T16:57:28","slug":"%e8%b3%87%e6%96%99%e5%ba%ab%e6%95%99%e7%a8%8b%ef%bc%9amysql-%e6%85%a2%e6%9f%a5%e8%a9%a2%e6%97%a5%e8%aa%8c%ef%bc%88slow-query-log%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160781\/","title":{"rendered":"\u8cc7\u6599\u5eab\u6559\u7a0b\uff1aMySQL \u6162\u67e5\u8a62\u65e5\u8a8c\uff08Slow Query Log\uff09"},"content":{"rendered":"<h1 id=\"%e8%b3%87%e6%96%99%e5%ba%ab%e6%95%99%e7%a8%8b%ef%bc%9amysql-%e6%85%a2%e6%9f%a5%e8%a9%a2%e6%97%a5%e8%aa%8c%ef%bc%88slow-query-log%ef%bc%89-rzvQJLEaGa\">\u8cc7\u6599\u5eab\u6559\u7a0b\uff1aMySQL \u6162\u67e5\u8a62\u65e5\u8a8c\uff08Slow Query Log\uff09<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0c\u6027\u80fd\u512a\u5316\u662f\u78ba\u4fdd\u61c9\u7528\u7a0b\u5f0f\u9ad8\u6548\u904b\u884c\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002MySQL \u4f5c\u70ba\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u958b\u6e90\u8cc7\u6599\u5eab\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u5de5\u5177\u4f86\u5e6b\u52a9\u7ba1\u7406\u54e1\u76e3\u63a7\u548c\u512a\u5316\u67e5\u8a62\u6027\u80fd\u3002\u5176\u4e2d\uff0c\u6162\u67e5\u8a62\u65e5\u8a8c\uff08Slow Query Log\uff09\u662f\u4e00\u500b\u975e\u5e38\u91cd\u8981\u7684\u529f\u80fd\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u8b58\u5225\u548c\u89e3\u6c7a\u6027\u80fd\u74f6\u9838\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%85%a2%e6%9f%a5%e8%a9%a2%e6%97%a5%e8%aa%8c%ef%bc%9f-rzvQJLEaGa\">\u4ec0\u9ebc\u662f\u6162\u67e5\u8a62\u65e5\u8a8c\uff1f<\/h2>\n<p>\u6162\u67e5\u8a62\u65e5\u8a8c\u662f MySQL \u7684\u4e00\u500b\u529f\u80fd\uff0c\u7528\u65bc\u8a18\u9304\u57f7\u884c\u6642\u9593\u8d85\u904e\u6307\u5b9a\u95be\u503c\u7684\u67e5\u8a62\u3002\u9019\u4e9b\u67e5\u8a62\u53ef\u80fd\u6703\u5f71\u97ff\u8cc7\u6599\u5eab\u7684\u6574\u9ad4\u6027\u80fd\uff0c\u56e0\u6b64\u901a\u904e\u5206\u6790\u9019\u4e9b\u65e5\u8a8c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u627e\u51fa\u9700\u8981\u512a\u5316\u7684\u67e5\u8a62\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6548\u7387\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%95%9f%e7%94%a8%e6%85%a2%e6%9f%a5%e8%a9%a2%e6%97%a5%e8%aa%8c-rzvQJLEaGa\">\u5982\u4f55\u555f\u7528\u6162\u67e5\u8a62\u65e5\u8a8c<\/h2>\n<p>\u8981\u555f\u7528\u6162\u67e5\u8a62\u65e5\u8a8c\uff0c\u60a8\u9700\u8981\u4fee\u6539 MySQL \u7684\u914d\u7f6e\u6587\u4ef6\uff08\u901a\u5e38\u662f my.cnf \u6216 my.ini\uff09\u3002\u4ee5\u4e0b\u662f\u555f\u7528\u6162\u67e5\u8a62\u65e5\u8a8c\u7684\u6b65\u9a5f\uff1a<\/p>\n<pre><code>[mysqld]\nslow_query_log = 1\nslow_query_log_file = \/var\/log\/mysql\/slow-query.log\nlong_query_time = 2\n<\/code><\/pre>\n<ul>\n<li><strong>slow_query_log<\/strong>: \u8a2d\u7f6e\u70ba 1 \u4ee5\u555f\u7528\u6162\u67e5\u8a62\u65e5\u8a8c\u3002<\/li>\n<li><strong>slow_query_log_file<\/strong>: \u6307\u5b9a\u6162\u67e5\u8a62\u65e5\u8a8c\u7684\u5b58\u5132\u8def\u5f91\u3002<\/li>\n<li><strong>long_query_time<\/strong>: \u8a2d\u5b9a\u67e5\u8a62\u57f7\u884c\u6642\u9593\u7684\u95be\u503c\uff08\u4ee5\u79d2\u70ba\u55ae\u4f4d\uff09\uff0c\u8d85\u904e\u6b64\u6642\u9593\u7684\u67e5\u8a62\u5c07\u88ab\u8a18\u9304\u3002<\/li>\n<\/ul>\n<p>\u5b8c\u6210\u914d\u7f6e\u5f8c\uff0c\u91cd\u555f MySQL \u670d\u52d9\u4ee5\u4f7f\u66f4\u6539\u751f\u6548\u3002<\/p>\n<h2 id=\"%e5%88%86%e6%9e%90%e6%85%a2%e6%9f%a5%e8%a9%a2%e6%97%a5%e8%aa%8c-rzvQJLEaGa\">\u5206\u6790\u6162\u67e5\u8a62\u65e5\u8a8c<\/h2>\n<p>\u4e00\u65e6\u6162\u67e5\u8a62\u65e5\u8a8c\u555f\u7528\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u591a\u7a2e\u5de5\u5177\u4f86\u5206\u6790\u9019\u4e9b\u65e5\u8a8c\u3002MySQL \u81ea\u5e36\u7684 <code>mysqldumpslow<\/code> \u5de5\u5177\u53ef\u4ee5\u5e6b\u52a9\u60a8\u5feb\u901f\u532f\u7e3d\u548c\u5206\u6790\u6162\u67e5\u8a62\u65e5\u8a8c\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u8a72\u5de5\u5177\u7684\u57fa\u672c\u547d\u4ee4\uff1a<\/p>\n<pre><code>mysqldumpslow -s t \/var\/log\/mysql\/slow-query.log\n<\/code><\/pre>\n<ul>\n<li><strong>-s t<\/strong>: \u6309\u67e5\u8a62\u6642\u9593\u6392\u5e8f\u3002<\/li>\n<li><strong>\/var\/log\/mysql\/slow-query.log<\/strong>: \u6307\u5b9a\u8981\u5206\u6790\u7684\u65e5\u8a8c\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<p>\u6b64\u5916\uff0c\u60a8\u9084\u53ef\u4ee5\u4f7f\u7528\u7b2c\u4e09\u65b9\u5de5\u5177\uff0c\u5982 <a href=\"https:\/\/www.percona.com\/software\/database-tools\/percona-toolkit\" rel=\"nofollow noopener\" target=\"_blank\">Percona Toolkit<\/a>\uff0c\u4f86\u9032\u884c\u66f4\u6df1\u5165\u7684\u5206\u6790\u548c\u5831\u544a\u3002<\/p>\n<h2 id=\"%e5%84%aa%e5%8c%96%e6%85%a2%e6%9f%a5%e8%a9%a2-rzvQJLEaGa\">\u512a\u5316\u6162\u67e5\u8a62<\/h2>\n<p>\u5728\u8b58\u5225\u51fa\u6162\u67e5\u8a62\u5f8c\uff0c\u63a5\u4e0b\u4f86\u7684\u6b65\u9a5f\u662f\u512a\u5316\u9019\u4e9b\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u512a\u5316\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>\u7d22\u5f15\u512a\u5316<\/strong>: \u78ba\u4fdd\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u5217\u6709\u9069\u7576\u7684\u7d22\u5f15\uff0c\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li><strong>\u67e5\u8a62\u91cd\u5beb<\/strong>: \u91cd\u65b0\u7de8\u5beb\u67e5\u8a62\u4ee5\u6e1b\u5c11\u4e0d\u5fc5\u8981\u7684\u8a08\u7b97\u548c\u6578\u64da\u6aa2\u7d22\u3002<\/li>\n<li><strong>\u5206\u5340\u8868<\/strong>: \u5c0d\u65bc\u5927\u578b\u8cc7\u6599\u96c6\uff0c\u8003\u616e\u4f7f\u7528\u5206\u5340\u8868\u4f86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u4f7f\u7528 EXPLAIN<\/strong>: \u4f7f\u7528 <code>EXPLAIN<\/code> \u8a9e\u53e5\u4f86\u5206\u6790\u67e5\u8a62\u8a08\u5283\uff0c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-rzvQJLEaGa\">\u7d50\u8ad6<\/h2>\n<p>\u6162\u67e5\u8a62\u65e5\u8a8c\u662f MySQL \u4e2d\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u8b58\u5225\u548c\u512a\u5316\u6027\u80fd\u4e0d\u4f73\u7684\u67e5\u8a62\u3002\u901a\u904e\u555f\u7528\u548c\u5206\u6790\u6162\u67e5\u8a62\u65e5\u8a8c\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u8cc7\u6599\u5eab\u7684\u6027\u80fd\uff0c\u5f9e\u800c\u63d0\u5347\u6574\u9ad4\u61c9\u7528\u7a0b\u5f0f\u7684\u97ff\u61c9\u901f\u5ea6\u548c\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684 MySQL \u8cc7\u6599\u5eab\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\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\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u6162\u67e5\u8a62\u65e5\u8a8c\u7684\u529f\u80fd\u8207\u8a2d\u5b9a\uff0c\u63d0\u5347\u8cc7\u6599\u5eab\u6548\u80fd\uff0c\u512a\u5316\u67e5\u8a62\u901f\u5ea6\uff0c\u78ba\u4fdd\u7cfb\u7d71\u904b\u884c\u9806\u66a2\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-160781","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160781","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=160781"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160781\/revisions"}],"predecessor-version":[{"id":160782,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160781\/revisions\/160782"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160781"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160781"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}