{"id":5244,"date":"2020-03-16T08:04:00","date_gmt":"2020-03-16T00:04:00","guid":{"rendered":"https:\/\/www.ldhost.cn\/jc\/?p=5244"},"modified":"2020-03-15T17:13:11","modified_gmt":"2020-03-15T09:13:11","slug":"mysql-mariadb-%e4%bd%bf%e7%94%a8mysqldumpslow%e6%9f%a5%e7%9c%8b%e5%92%8c%e5%88%86%e6%9e%90%e6%85%a2%e6%9f%a5%e8%af%a2","status":"publish","type":"post","link":"https:\/\/www.ldhost.cn\/jc\/ot\/5244.html","title":{"rendered":"MySQL \/ MariaDB-\u4f7f\u7528mysqldumpslow\u67e5\u770b\u548c\u5206\u6790\u6162\u67e5\u8be2"},"content":{"rendered":"\n

\u7f51\u7ad9\u5f00\u53d1\u4eba\u5458\u5728\u6267\u884c\u670d\u52a1\u5668<\/a>MySQL\u67e5\u8be2\u65f6\u7ecf\u5e38\u4f1a\u9047\u5230\u6027\u80fd\u4e0b\u964d\u7684\u95ee\u9898\u3002\u540c\u65f6\uff0c\u6d4b\u8bd5\u8bf7\u6c42\u6267\u884c\u5f97\u975e\u5e38\u5feb\u3002\u539f\u56e0\u53ef\u80fd\u662f\u67e5\u8be2\u672a\u4f18\u5316\u6216\u7f3a\u5c11\u7d22\u5f15\u3002<\/p>\n\n\n\n

\u60a8\u53ef\u4ee5\u6fc0\u6d3b\u65e5\u5fd7\u8bb0\u5f55\u5e76\u5206\u6790\u6162\u901f\u67e5\u8be2\u3002\u5728\u6162\u901fMySQL\u67e5\u8be2\u7684\u65e5\u5fd7\u4e2d\u6709\u5927\u91cf\u884c\uff0c\u56e0\u6b64\u8bfb\u53d6\u8be5\u6587\u4ef6\u5c06\u6210\u95ee\u9898\u3002mysqldumpslow\u5b9e\u7528\u7a0b\u5e8f\u5c06\u4e3a\u60a8\u63d0\u4f9b\u5e2e\u52a9\u3002<\/p>\n\n\n\n

\u542f\u7528\u65e5\u5fd7\u7684my.cnf\u914d\u7f6e\u793a\u4f8b\u3002\u8bb0\u5f55\u4e86\u8fd0\u884c\u65f6\u95f4\u8d85\u8fc7\u4e94\u79d2\u5e76\u4e14\u6ca1\u6709\u7d22\u5f15\u7684JOIN\u67e5\u8be2\u3002<\/p>\n\n\n\n

slow_query_log = 1
\nslow_query_log_file = \/var\/log\/mysql\/slow.log
\nlong_query_time = 5
\nlog_queries_not_using_indexes = 1<\/p>\n\n\n\n

\u65e5\u5fd7\u6587\u4ef6\/var\/log\/mysql\/slow.log\u5fc5\u987b\u624b\u52a8\u521b\u5efa\uff1a<\/p>\n\n\n\n

mkdir \/var\/log\/mysql
\ntouch \/var\/log\/mysql\/slow.log
\nchown mysql.mysql -R \/var\/log\/mysql<\/p>\n\n\n\n

mysqldumpslow\u5b9e\u7528\u7a0b\u5e8f\u5141\u8bb8\u60a8\u5206\u6790\u6162\u901f\u6570\u636e\u5e93\u67e5\u8be2\u7684\u65e5\u5fd7\u3002<\/p>\n\n\n\n

\u57fa\u672c\u5e94\u7528\uff1a<\/p>\n\n\n\n

\uff03\u663e\u793a10\u4e2a\u6700\u6162\u7684\u67e5\u8be2\u3002 \u6309\u5e73\u5747\u67e5\u8be2\u65f6\u95f4\u6392\u5e8f\u3002
\nmysqldumpslow -s at -t 10
\n 
\n\uff03\u6709\u65f6\u60a8\u9700\u8981\u6307\u5b9a\u7279\u5b9a\u7684\u65e5\u5fd7\uff0c\u65e5\u5fd7\u540d\u79f0\u4e3axxxx-slow.log\uff0c\u5176\u4e2dxxxx\u901a\u5e38\u662f\u4e3b\u673a\u540d\u3002
\nmysqldumpslow -s at -t 10 \/var\/log\/mysql\/slow.log<\/p>\n\n\n\n

Count: 2 Time=68.34s (136s) Lock=0.00s (0s) Rows=39892974.5 (79785949), root[root]@localhost
\n SELECT PL.pl_title, P.page_title
\n FROM page P
\n INNER JOIN pagelinks PL
\n ON PL.pl_namespace = P.page_namespace
\n WHERE P.page_namespace = N<\/p><\/blockquote>\n\n\n\n

\u6807\u9898\u7684\u89e3\u7801\uff1a<\/p>\n\n\n\n

Count-\u65e5\u5fd7\u4e2d\u8bf7\u6c42\u7684\u51fa\u73b0\u6b21\u6570\uff1b
\n\u65f6\u95f4 -\u5e73\u5747\u548c\u603b\u8bf7\u6c42\u65f6\u95f4\uff1b
\n\u9501\u5b9a -\u8868\u9501\u5b9a\u65f6\u95f4\uff1b
\n\u884c\u6570-\u9009\u5b9a\u7684\u884c\u6570<\/p>\n

\"\u56fe\u7247\u63cf\u8ff0\"<\/div>","protected":false},"excerpt":{"rendered":"

\u7f51\u7ad9\u5f00\u53d1\u4eba\u5458\u5728\u6267\u884c\u670d\u52a1\u5668MySQL\u67e5\u8be2\u65f6\u7ecf\u5e38\u4f1a\u9047\u5230\u6027\u80fd\u4e0b\u964d\u7684\u95ee\u9898\u3002\u540c\u65f6\uff0c\u6d4b\u8bd5\u8bf7\u6c42\u6267\u884c\u5f97\u975e\u5e38\u5feb\u3002\u539f\u56e0\u53ef\u80fd\u662f\u67e5\u8be2\u672a\u4f18\u5316\u6216\u7f3a\u5c11\u7d22\u5f15\u3002 \u60a8\u53ef\u4ee5\u6fc0\u6d3b\u65e5\u5fd7\u8bb0\u5f55\u5e76\u5206\u6790\u6162\u901f\u67e5\u8be2\u3002\u5728\u6162\u901fMySQL\u67e5\u8be2\u7684\u65e5\u5fd7\u4e2d\u6709\u5927\u91cf\u884c\uff0c\u56e0\u6b64\u8bfb\u53d6\u8be5\u6587\u4ef6\u5c06\u6210\u95ee\u9898\u3002mysqldumpslow\u5b9e\u7528\u7a0b\u5e8f\u5c06\u4e3a\u60a8\u63d0\u4f9b\u5e2e\u52a9\u3002 \u542f\u7528\u65e5\u5fd7\u7684my.cnf\u914d\u7f6e\u793a\u4f8b\u3002\u8bb0\u5f55\u4e86\u8fd0\u884c\u65f6\u95f4\u8d85\u8fc7\u4e94\u79d2\u5e76\u4e14\u6ca1\u6709\u7d22\u5f15\u7684JOIN\u67e5\u8be2\u3002 slow_query_log = 1 slow_query_log_file = \/var\/log\/mysql\/slow.log long_query_time = 5 log_queries_not_using_indexes = 1 \u65e5… \u9605\u8bfb\u5168\u6587MySQL \/ MariaDB-\u4f7f\u7528mysqldumpslow\u67e5\u770b\u548c\u5206\u6790\u6162\u67e5\u8be2<\/span><\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-5244","post","type-post","status-publish","format-standard","hentry","category-ot","content-layout-excerpt-thumb"],"_links":{"self":[{"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/posts\/5244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/comments?post=5244"}],"version-history":[{"count":1,"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/posts\/5244\/revisions"}],"predecessor-version":[{"id":5245,"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/posts\/5244\/revisions\/5245"}],"wp:attachment":[{"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/media?parent=5244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/categories?post=5244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ldhost.cn\/jc\/wp-json\/wp\/v2\/tags?post=5244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}