{"id":158455,"date":"2024-11-03T02:00:44","date_gmt":"2024-11-02T18:00:44","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158455\/"},"modified":"2024-11-03T02:00:45","modified_gmt":"2024-11-02T18:00:45","slug":"%e6%a0%b9%e6%93%9a-status-%e4%bf%a1%e6%81%af%e5%b0%8d-mysql-%e4%bc%ba%e6%9c%8d%e5%99%a8%e9%80%b2%e8%a1%8c%e5%84%aa%e5%8c%96","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158455\/","title":{"rendered":"\u6839\u64da status \u4fe1\u606f\u5c0d MySQL \u4f3a\u670d\u5668\u9032\u884c\u512a\u5316"},"content":{"rendered":"<h1 id=\"%e6%a0%b9%e6%93%9a-status-%e4%bf%a1%e6%81%af%e5%b0%8d-mysql-%e4%bc%ba%e6%9c%8d%e5%99%a8%e9%80%b2%e8%a1%8c%e5%84%aa%e5%8c%96-nEdqzcJOuj\">\u6839\u64da status \u4fe1\u606f\u5c0d MySQL \u4f3a\u670d\u5668\u9032\u884c\u512a\u5316<\/h1>\n<p>MySQL \u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u9069\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\u548c\u7528\u6236\u8acb\u6c42\u7684\u589e\u52a0\uff0cMySQL \u4f3a\u670d\u5668\u7684\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002\u70ba\u4e86\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u9ad8\u6548\u904b\u884c\uff0c\u6839\u64da MySQL \u7684 status \u4fe1\u606f\u9032\u884c\u512a\u5316\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528\u9019\u4e9b\u4fe1\u606f\u4f86\u63d0\u5347 MySQL \u4f3a\u670d\u5668\u7684\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%90%86%e8%a7%a3-mysql-status-%e4%bf%a1%e6%81%af-nEdqzcJOuj\">\u7406\u89e3 MySQL Status \u4fe1\u606f<\/h2>\n<p>MySQL \u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7684 status \u8b8a\u91cf\uff0c\u9019\u4e9b\u8b8a\u91cf\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u4e86\u89e3\u4f3a\u670d\u5668\u7684\u904b\u884c\u72c0\u6cc1\u3002\u53ef\u4ee5\u901a\u904e\u57f7\u884c\u4ee5\u4e0b SQL \u547d\u4ee4\u4f86\u67e5\u770b\u9019\u4e9b\u4fe1\u606f\uff1a<\/p>\n<pre><code>SHOW GLOBAL STATUS;<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u8fd4\u56de\u4e00\u500b\u5305\u542b\u591a\u500b\u8b8a\u91cf\u7684\u5217\u8868\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><strong>Connections<\/strong>\uff1a\u8868\u793a\u81ea\u4f3a\u670d\u5668\u555f\u52d5\u4ee5\u4f86\u7684\u9023\u63a5\u6578\u3002<\/li>\n<li><strong>Threads_connected<\/strong>\uff1a\u7576\u524d\u9023\u63a5\u5230\u4f3a\u670d\u5668\u7684\u7dda\u7a0b\u6578\u3002<\/li>\n<li><strong>Slow_queries<\/strong>\uff1a\u57f7\u884c\u6642\u9593\u8d85\u904e long_query_time \u8a2d\u5b9a\u7684\u67e5\u8a62\u6578\u91cf\u3002<\/li>\n<li><strong>Innodb_buffer_pool_usage<\/strong>\uff1aInnoDB \u7de9\u885d\u6c60\u7684\u4f7f\u7528\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%84%aa%e5%8c%96-mysql-%e4%bc%ba%e6%9c%8d%e5%99%a8%e7%9a%84%e6%ad%a5%e9%a9%9f-nEdqzcJOuj\">\u512a\u5316 MySQL \u4f3a\u670d\u5668\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"1-%e7%9b%a3%e6%8e%a7%e9%80%a3%e6%8e%a5%e6%95%b8-nEdqzcJOuj\">1. \u76e3\u63a7\u9023\u63a5\u6578<\/h3>\n<p>\u9ad8\u9023\u63a5\u6578\u53ef\u80fd\u6703\u5c0e\u81f4\u4f3a\u670d\u5668\u6027\u80fd\u4e0b\u964d\u3002\u53ef\u4ee5\u901a\u904e\u8abf\u6574 <code>max_connections<\/code> \u53c3\u6578\u4f86\u9650\u5236\u540c\u6642\u9023\u63a5\u7684\u6578\u91cf\u3002\u6839\u64da <code>Connections<\/code> \u548c <code>Threads_connected<\/code> \u7684\u503c\uff0c\u9069\u7576\u8abf\u6574\u6b64\u53c3\u6578\u4ee5\u907f\u514d\u904e\u8f09\u3002<\/p>\n<h3 id=\"2-%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd-nEdqzcJOuj\">2. \u512a\u5316\u67e5\u8a62\u6027\u80fd<\/h3>\n<p>\u6839\u64da <code>Slow_queries<\/code> \u7684\u6578\u64da\uff0c\u8b58\u5225\u4e26\u512a\u5316\u6162\u67e5\u8a62\u3002\u53ef\u4ee5\u4f7f\u7528 <code>EXPLAIN<\/code> \u547d\u4ee4\u4f86\u5206\u6790\u67e5\u8a62\u8a08\u5283\uff0c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>EXPLAIN SELECT * FROM your_table WHERE condition;<\/code><\/pre>\n<p>\u6839\u64da\u5206\u6790\u7d50\u679c\uff0c\u8003\u616e\u6dfb\u52a0\u7d22\u5f15\u6216\u91cd\u5beb\u67e5\u8a62\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<h3 id=\"3-%e8%aa%bf%e6%95%b4-innodb-%e7%b7%a9%e8%a1%9d%e6%b1%a0-nEdqzcJOuj\">3. \u8abf\u6574 InnoDB \u7de9\u885d\u6c60<\/h3>\n<p>InnoDB \u7de9\u885d\u6c60\u662f MySQL \u4e2d\u7528\u65bc\u7de9\u5b58\u6578\u64da\u548c\u7d22\u5f15\u7684\u4e3b\u8981\u5167\u5b58\u5340\u57df\u3002\u6839\u64da <code>Innodb_buffer_pool_usage<\/code> \u7684\u503c\uff0c\u8abf\u6574 <code>innodb_buffer_pool_size<\/code> \u53c3\u6578\uff0c\u4ee5\u78ba\u4fdd\u7de9\u885d\u6c60\u7684\u5927\u5c0f\u9069\u5408\u60a8\u7684\u6578\u64da\u96c6\u3002\u4e00\u822c\u5efa\u8b70\u5c07\u5176\u8a2d\u7f6e\u70ba\u53ef\u7528\u5167\u5b58\u7684 70% \u5230 80%\u3002<\/p>\n<h3 id=\"4-%e5%ae%9a%e6%9c%9f%e6%b8%85%e7%90%86%e6%95%b8%e6%93%9a-nEdqzcJOuj\">4. \u5b9a\u671f\u6e05\u7406\u6578\u64da<\/h3>\n<p>\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u6578\u64da\u5eab\u4e2d\u53ef\u80fd\u6703\u7a4d\u7d2f\u5927\u91cf\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u3002\u5b9a\u671f\u6e05\u7406\u904e\u671f\u7684\u6578\u64da\u548c\u7121\u7528\u7684\u8a18\u9304\uff0c\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u4e26\u91cb\u653e\u5b58\u5132\u7a7a\u9593\u3002<\/p>\n<h3 id=\"5-%e7%9b%a3%e6%8e%a7%e5%92%8c%e8%aa%bf%e6%95%b4%e5%85%b6%e4%bb%96%e5%8f%83%e6%95%b8-nEdqzcJOuj\">5. \u76e3\u63a7\u548c\u8abf\u6574\u5176\u4ed6\u53c3\u6578<\/h3>\n<p>\u9664\u4e86\u4e0a\u8ff0\u5e7e\u9ede\uff0c\u9084\u61c9\u5b9a\u671f\u6aa2\u67e5\u5176\u4ed6\u91cd\u8981\u7684 status \u8b8a\u91cf\uff0c\u5982 <code>Table_locks_waited<\/code> \u548c <code>Handler_read_rnd_next<\/code>\uff0c\u9019\u4e9b\u8b8a\u91cf\u80fd\u5920\u63d0\u4f9b\u6709\u95dc\u9396\u5b9a\u548c\u96a8\u6a5f\u8b80\u53d6\u6027\u80fd\u7684\u898b\u89e3\u3002\u6839\u64da\u9019\u4e9b\u4fe1\u606f\uff0c\u8abf\u6574\u76f8\u61c9\u7684\u53c3\u6578\u4ee5\u9032\u4e00\u6b65\u512a\u5316\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-nEdqzcJOuj\">\u7d50\u8ad6<\/h2>\n<p>\u6839\u64da MySQL \u7684 status \u4fe1\u606f\u9032\u884c\u512a\u5316\u662f\u4e00\u500b\u6301\u7e8c\u7684\u904e\u7a0b\uff0c\u901a\u904e\u5b9a\u671f\u76e3\u63a7\u548c\u8abf\u6574\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u4f3a\u670d\u5668\u7684\u6027\u80fd\u3002\u4e86\u89e3\u548c\u5206\u6790\u9019\u4e9b\u4fe1\u606f\uff0c\u80fd\u5920\u5e6b\u52a9\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ca\u6642\u767c\u73fe\u554f\u984c\u4e26\u63a1\u53d6\u76f8\u61c9\u7684\u63aa\u65bd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\u4f86\u8aaa\uff0c\u9019\u4e9b\u512a\u5316\u63aa\u65bd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u548c <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6839\u64da MySQL \u4f3a\u670d\u5668\u7684 status \u4fe1\u606f\uff0c\u63d0\u4f9b\u512a\u5316\u5efa\u8b70\uff0c\u63d0\u5347\u6027\u80fd\u8207\u6548\u7387\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\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-158455","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158455","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=158455"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158455\/revisions"}],"predecessor-version":[{"id":158456,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158455\/revisions\/158456"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=158455"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=158455"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=158455"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}