{"id":1950,"date":"2020-07-29T21:27:42","date_gmt":"2020-07-29T13:27:42","guid":{"rendered":"http:\/\/39.97.231.10\/?p=1950"},"modified":"2020-07-29T21:27:42","modified_gmt":"2020-07-29T13:27:42","slug":"mysql-sql%e6%80%a7%e8%83%bd%e5%88%86%e6%9e%90-profiling-using-performance-schema","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=1950","title":{"rendered":"MySQL SQL\u6027\u80fd\u5206\u6790 Profiling Using Performance Schema"},"content":{"rendered":"<div class=\\\"blog_content\\\">\n<div class=\\\"blog_detail\\\">\n<div>\nMySQL\u4e00\u76f4\u4ee5\u6765\u63d0\u4f9bshow profile\u547d\u4ee4\u6765\u83b7\u53d6\u67d0\u4e00\u6761SQL\u6267\u884c\u8fc7\u7a0b\u4e2d\u7684\u8d44\u6e90\u4f7f\u7528\u4e0e\u8017\u65f6\u60c5\u51b5\uff0c\u8fd9\u4e2a\u547d\u4ee4\u5bf9\u4e8e\u5206\u6790\u5177\u4f53SQL\u7684\u6027\u80fd\u74f6\u9888\u6709\u975e\u5e38\u5927\u7684\u5e2e\u52a9\uff0c\u4f46\u662f\u8fd9\u4e2a\u529f\u80fd\u5728MySQL\u65b0\u7684\u7248\u672c\u91cc\u5c06\u4f1a\u88ab\u5e9f\u5f03\uff0c\u53d6\u800c\u4ee3\u4e4b\u7684\u662f\u4f7f\u7528Performance Schema\u6765\u63d0\u4f9b\u540c\u6837\u7684\u529f\u80fd\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Performance Schema\u6765\u5b9e\u73b0show profile SQL\u6027\u80fd\u5206\u6790\u7684\u529f\u80fd\u3002<\/p>\n<h4>1. \u6d4b\u8bd5\u73af\u5883\u914d\u7f6e<\/h4>\n<ul>\n<li>\u6d4b\u8bd5\u7248\u672c\uff1aMySQL 5.7.19<\/li>\n<li>\u914d\u7f6e\u53c2\u6570\uff1aperformance_schema=ON\uff0c\u8be5\u53c2\u6570\u914d\u7f6e\u5728my.cnf\u6587\u4ef6\u4e2d\uff0c\u751f\u6548\u9700\u8981\u91cd\u542fMySQL\u3002<\/li>\n<\/ul>\n<h4>2. \u914d\u7f6eperformance_schema<\/h4>\n<h5>2.1 \u914d\u7f6e\u8868setup_actors<\/h5>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cperformance_schema\u529f\u80fd\u6253\u5f00\u540e\uff0c\u5c06\u4f1a\u6536\u96c6\u6240\u6709\u7528\u6237\u7684SQL\u6267\u884c\u5386\u53f2\u4e8b\u4ef6\uff0c\u56e0\u4e3a\u6536\u96c6\u7684\u4fe1\u606f\u592a\u591a\uff0c\u5bf9\u6570\u636e\u5e93\u6574\u4f53\u6027\u80fd\u6709\u4e00\u5b9a\u5f71\u54cd\uff0c\u800c\u4e14\u4e5f\u4e0d\u5229\u4e8e\u6392\u67e5\u6307\u5b9aSQL\u7684\u6027\u80fd\u95ee\u9898\uff0c\u56e0\u6b64\u9700\u8981\u4fee\u6539setup_actors\u8868\u7684\u914d\u7f6e\uff0c\u53ea\u6536\u96c6\u7279\u5b9a\u7528\u6237\u7684\u5386\u53f2\u4e8b\u4ef6\u4fe1\u606f\u3002setup_actors\u8868\u914d\u7f6e\u5982\u4e0b\uff1a<\/p>\n<pre><code>mysql&gt; select * from performance_schema.setup_actors;\n+-----------+------+------+---------+---------+\n| HOST      | USER | ROLE | ENABLED | HISTORY |\n+-----------+------+------+---------+---------+\n| %         | %    | %    | NO      | NO      |\n| localhost | root | %    | YES     | YES     |\n+-----------+------+------+---------+---------+\n2 rows in set (0.00 sec)\n<\/code><\/pre>\n<p>\u53ea\u6536\u96c6\u672c\u5730root\u7528\u6237\u7684SQL\u6267\u884c\u5386\u53f2\u4e8b\u4ef6\u3002<\/p>\n<h5>2.2 \u914d\u7f6e\u8868setup_instruments<\/h5>\n<p>\u542f\u7528statement\u548cstage\u76d1\u89c6\u5668\u3002<\/p>\n<pre><code>UPDATE performance_schema.setup_instruments SET ENABLED = \\'YES\\', TIMED = \\'YES\\' WHERE NAME LIKE \\'%statement\/%\\';\nUPDATE performance_schema.setup_instruments SET ENABLED = \\'YES\\', TIMED = \\'YES\\' WHERE NAME LIKE \\'%stage\/%\\';\n<\/code><\/pre>\n<h5>2.3 \u914d\u7f6e\u8868setup_consumers<\/h5>\n<p>\u542f\u7528events_statements_*\uff0cevents_stages_* \u5f00\u5934\u7684\u4e8b\u4ef6\u7c7b\u578b\u6d88\u8d39\u3002<\/p>\n<pre><code>UPDATE performance_schema.setup_consumers SET ENABLED = \\'YES\\' WHERE NAME LIKE \\'%events_statements_%\\';\nUPDATE performance_schema.setup_consumers SET ENABLED = \\'YES\\' WHERE NAME LIKE \\'%events_stages_%\\';\n<\/code><\/pre>\n<h4>3. \u6536\u96c6\u5177\u4f53SQL\u7684\u6027\u80fd\u5206\u6790<\/h4>\n<h5>3.1 \u6267\u884c\u4e1a\u52a1SQL<\/h5>\n<p>\u5728\u4e0a\u8ff0\u914d\u7f6e\u5b8c\u6210\u4e4b\u540e\uff0c\u6267\u884c\u4e00\u4e2a\u9700\u8981\u5206\u6790\u7684\u4e1a\u52a1SQL\uff0c\u6bd4\u5982\uff1a<br \/>\nselect * from blog;<\/p>\n<h5>3.2 \u83b7\u53d6\u4e1a\u52a1SQL\u7684\u4e8b\u4ef6ID<\/h5>\n<p>\u901a\u8fc7\u4ee5\u4e0bSQL\u5148\u67e5\u8be2\u4e8b\u4ef6ID\u3002<\/p>\n<pre><code>SELECT EVENT_ID, TRUNCATE(TIMER_WAIT\/1000000000000,6) as Duration, SQL_TEXT FROM performance_schema.events_statements_history_long WHERE SQL_TEXT like \\'%blog%\\';\n+----------+----------+-------------------------+\n| EVENT_ID | Duration | SQL_TEXT\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 |\n+----------+----------+-------------------------+\n|\u00a0\u00a0\u00a0\u00a0\u00a0 243 | 0.002698 | select * from blog.blog |\n+----------+----------+-------------------------+\n1 row in set (0.00 sec)\n<\/code><\/pre>\n<h5>3.3 \u6839\u636e\u4e8b\u4ef6ID\uff0c\u83b7\u53d6\u5404\u9636\u6bb5\u6267\u884c\u8017\u65f6<\/h5>\n<p>\u6839\u636e\u4e0a\u4e00\u6b65\u83b7\u53d6\u7684\u4e8b\u4ef6ID(EVENT_ID)\uff0c\u67e5\u8be2\u8be5SQL\u5404\u4e2a\u9636\u6bb5\u7684\u8017\u65f6\u60c5\u51b5\u3002\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT event_name AS Stage, TRUNCATE(TIMER_WAIT\/1000000000000,6) AS Duration FROM performance_schema.events_stages_history_long WHERE NESTING_EVENT_ID=243;\n+--------------------------------+----------+\n| Stage\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | Duration |\n+--------------------------------+----------+\n| stage\/sql\/starting\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000117 |\n| stage\/sql\/checking permissions | 0.000010 |\n| stage\/sql\/Opening tables\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000031 |\n| stage\/sql\/init\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000055 |\n| stage\/sql\/System lock\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000024 |\n| stage\/sql\/optimizing\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000003 |\n| stage\/sql\/statistics\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000020 |\n| stage\/sql\/preparing\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000015 |\n| stage\/sql\/executing\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000001 |\n| stage\/sql\/Sending data\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.002321 |\n| stage\/sql\/end\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000004 |\n| stage\/sql\/query end\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000019 |\n| stage\/sql\/closing tables\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000018 |\n| stage\/sql\/freeing items\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000048 |\n| stage\/sql\/cleaning up\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 0.000001 |\n+--------------------------------+----------+\n15 rows in set (0.00 sec)\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u7ed3\u679c\u4e0eshow profile\u7684\u8f93\u51fa\u7ed3\u679c\u7c7b\u4f3c\uff0c\u80fd\u591f\u770b\u5230\u6bcf\u4e2a\u9636\u6bb5\u7684\u8017\u65f6\u60c5\u51b5\u3002\u76f8\u5bf9\u4e8eshow profile\u6765\u8bf4\uff0c\u4f3c\u4e4e\u66f4\u52a0\u7e41\u7410\uff0c\u4e0d\u8fc7performance schema\u662fMySQL\u672a\u6765\u6027\u80fd\u5206\u6790\u7684\u8d8b\u52bf\uff0c\u63d0\u4f9b\u4e86\u975e\u5e38\u4e30\u5bcc\u7684\u6027\u80fd\u8bca\u65ad\u5de5\u5177\uff0c\u719f\u6089performance schema\u7684\u4f7f\u7528\u5c06\u6709\u52a9\u4e8e\u66f4\u597d\u7684\u4f18\u5316MySQL\u3002\n<\/p><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>MySQL\u4e00\u76f4\u4ee5\u6765\u63d0\u4f9bshow profile\u547d\u4ee4\u6765\u83b7\u53d6\u67d0\u4e00\u6761SQL\u6267\u884c\u8fc7\u7a0b\u4e2d\u7684\u8d44\u6e90\u4f7f\u7528\u4e0e\u8017\u65f6\u60c5\u51b5\uff0c\u8fd9\u4e2a\u547d\u4ee4\u5bf9 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=1950\"> <span class=\"screen-reader-text\">MySQL SQL\u6027\u80fd\u5206\u6790 Profiling Using Performance Schema<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[90,88],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mailpoet_newsletter_max":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false,"shop_catalog":false,"shop_single":false,"shop_thumbnail":false},"uagb_author_info":{"display_name":"weijing","author_link":"http:\/\/www.weijing.co\/?author=4"},"uagb_comment_info":0,"uagb_excerpt":"MySQL\u4e00\u76f4\u4ee5\u6765\u63d0\u4f9bshow profile\u547d\u4ee4\u6765\u83b7\u53d6\u67d0\u4e00\u6761SQL\u6267\u884c\u8fc7\u7a0b\u4e2d\u7684\u8d44\u6e90\u4f7f\u7528\u4e0e\u8017\u65f6\u60c5\u51b5\uff0c\u8fd9\u4e2a\u547d\u4ee4\u5bf9&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1950"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1950"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1950\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1950"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1950"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1950"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}