{"id":208418,"date":"2025-09-27T13:32:55","date_gmt":"2025-09-27T05:32:55","guid":{"rendered":"https:\/\/www.server.hk\/blog\/?p=208418"},"modified":"2025-09-27T13:32:55","modified_gmt":"2025-09-27T05:32:55","slug":"%e6%8e%8c%e6%8f%a1-mysql-show-processlist-%e5%91%bd%e4%bb%a4%ef%bc%9a%e9%a6%99%e6%b8%af%e6%9c%8d%e5%8a%a1%e5%99%a8%e6%95%b0%e6%8d%ae%e5%ba%93%e7%9b%91%e6%8e%a7%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208418\/","title":{"rendered":"\u638c\u63e1 MySQL SHOW PROCESSLIST \u547d\u4ee4\uff1a\u9999\u6e2f\u670d\u52a1\u5668\u6570\u636e\u5e93\u76d1\u63a7\u6307\u5357"},"content":{"rendered":"<h2>\u5f15\u8a00<\/h2>\n<p>\u5728 MySQL \u6570\u636e\u5e93\u7ba1\u7406\u4e2d\uff0c<code>SHOW PROCESSLIST<\/code> \u547d\u4ee4\u662f\u4e00\u4e2a\u5173\u952e\u7684\u8bca\u65ad\u5de5\u5177\uff0c\u7528\u4e8e\u76d1\u63a7\u6570\u636e\u5e93\u670d\u52a1\u5668\u4e0a\u7684\u6d3b\u8dc3\u7ebf\u7a0b\u548c\u8fdb\u7a0b\u3002\u5bf9\u4e8e\u7ba1\u7406<a href=\"https:\/\/server.hk\/\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\u7684\u6280\u672f\u4eba\u5458\u6765\u8bf4\uff0c\u8be5\u547d\u4ee4\u80fd\u591f\u63d0\u4f9b\u6df1\u5165\u7684\u6027\u80fd\u6d1e\u5bdf\uff0c\u5e2e\u52a9\u8bc6\u522b\u6162\u67e5\u8be2\u3001\u8fde\u63a5\u95ee\u9898\u6216\u8d44\u6e90\u74f6\u9888\u3002\u672c\u6587\u8be6\u7ec6\u8bb2\u89e3\u4e86 <code>SHOW PROCESSLIST<\/code> \u547d\u4ee4\u7684\u7528\u6cd5\u3001\u8f93\u51fa\u5185\u5bb9\u53ca\u5176\u5728<a href=\"https:\/\/server.hk\/\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\u73af\u5883\u4e2d\u7684\u5b9e\u9645\u5e94\u7528\uff0c\u786e\u4fdd\u6570\u636e\u5e93\u6027\u80fd\u4f18\u5316\u548c\u7ba1\u7406\u7684\u9ad8\u6548\u6027\u3002<\/p>\n<h2>\u4e86\u89e3 SHOW PROCESSLIST \u547d\u4ee4<\/h2>\n<p><code>SHOW PROCESSLIST<\/code> \u547d\u4ee4\u7528\u4e8e\u663e\u793a MySQL \u670d\u52a1\u5668\u4e0a\u6b63\u5728\u8fd0\u884c\u7684\u7ebf\u7a0b\u4fe1\u606f\u3002\u901a\u8fc7\u6dfb\u52a0 <code>FULL<\/code> \u5173\u952e\u5b57\uff08<code>SHOW FULL PROCESSLIST<\/code>\uff09\uff0c\u53ef\u4ee5\u67e5\u770b\u5b8c\u6574\u7684\u67e5\u8be2\u8bed\u53e5\uff0c\u975e\u5e38\u9002\u5408\u6392\u67e5\u6027\u80fd\u95ee\u9898\u3002\u8be5\u547d\u4ee4\u5728\u9047\u5230\u201c\u8fde\u63a5\u8fc7\u591a\u201d\uff08too many connections\uff09\u9519\u8bef\u6216\u9700\u8981\u5206\u6790\u6570\u636e\u5e93\u6d3b\u52a8\u65f6\u5c24\u4e3a\u6709\u7528\u3002<\/p>\n<p>\u4e3b\u8981\u529f\u80fd\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u7ebf\u7a0b\u53ef\u89c1\u6027<\/strong>\uff1a\u663e\u793a\u7528\u6237\u8d26\u6237\u76f8\u5173\u7684\u7ebf\u7a0b\uff0c\u6216\u5177\u6709 <code>PROCESS<\/code> \u6743\u9650\u65f6\u663e\u793a\u6240\u6709\u7ebf\u7a0b\u3002<\/li>\n<li><strong>\u67e5\u8be2\u8be6\u60c5<\/strong>\uff1a\u901a\u8fc7 <code>FULL<\/code> \u5173\u952e\u5b57\u67e5\u770b\u5b8c\u6574\u7684 SQL \u8bed\u53e5\u3002<\/li>\n<li><strong>\u7ebf\u7a0b\u7ba1\u7406<\/strong>\uff1a\u652f\u6301\u4f7f\u7528 <code>KILL<\/code> \u547d\u4ee4\u7ec8\u6b62\u95ee\u9898\u7ebf\u7a0b\u3002<\/li>\n<\/ul>\n<h2>SHOW PROCESSLIST \u8f93\u51fa\u5217<\/h2>\n<p><code>SHOW PROCESSLIST<\/code> \u7684\u8f93\u51fa\u5305\u542b\u4ee5\u4e0b\u5173\u952e\u5217\uff0c\u63d0\u4f9b\u7ebf\u7a0b\u72b6\u6001\u7684\u5168\u9762\u89c6\u56fe\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5217\u540d<\/th>\n<th>\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Id<\/strong><\/td>\n<td>\u8fde\u63a5\u7684\u552f\u4e00\u6807\u8bc6\u7b26\uff0c\u4e0e <code>INFORMATION_SCHEMA.PROCESSLIST<\/code> \u8868\u4e2d\u7684 ID \u6216 <code>CONNECTION_ID()<\/code> \u51fd\u6570\u8fd4\u56de\u503c\u4e00\u81f4\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>User<\/strong><\/td>\n<td>\u6267\u884c\u7ebf\u7a0b\u7684 MySQL \u7528\u6237\u540d\uff08\u5982 <code>root<\/code> \u6216 <code>system user<\/code>\uff0c\u540e\u8005\u8868\u793a\u670d\u52a1\u5668\u5185\u90e8\u4efb\u52a1\u7ebf\u7a0b\uff09\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>Host<\/strong><\/td>\n<td>\u5ba2\u6237\u7aef\u4e3b\u673a\u540d\u548c\u7aef\u53e3\uff08\u5982 <code>localhost:50255<\/code>\uff09\uff0c\u4fbf\u4e8e\u8bc6\u522b\u8fde\u63a5\u6765\u6e90\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>DB<\/strong><\/td>\n<td>\u7ebf\u7a0b\u7684\u9ed8\u8ba4\u6570\u636e\u5e93\uff0c\u82e5\u672a\u9009\u62e9\u5219\u4e3a <code>NULL<\/code>\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>Command<\/strong><\/td>\n<td>\u7ebf\u7a0b\u6267\u884c\u7684\u547d\u4ee4\u7c7b\u578b\uff08\u5982 <code>Query<\/code>\u3001<code>Sleep<\/code>\u3001<code>Connect<\/code>\u3001<code>Binlog Dump<\/code>\uff09\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>Time<\/strong><\/td>\n<td>\u7ebf\u7a0b\u5728\u5f53\u524d\u72b6\u6001\u7684\u6301\u7eed\u65f6\u95f4\uff08\u79d2\uff09\u3002\u5bf9\u4e8e\u526f\u672c SQL \u7ebf\u7a0b\uff0c\u8868\u793a\u4e0a\u6b21\u590d\u5236\u4e8b\u4ef6\u4e0e\u5b9e\u65f6\u4e4b\u95f4\u7684\u65f6\u95f4\u5dee\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>State<\/strong><\/td>\n<td>\u7ebf\u7a0b\u7684\u5f53\u524d\u6d3b\u52a8\u6216\u72b6\u6001\uff08\u5982 <code>Waiting on empty queue<\/code>\u3001<code>starting<\/code>\uff09\u3002\u957f\u65f6\u95f4\u505c\u7559\u5728\u67d0\u72b6\u6001\u53ef\u80fd\u9700\u8fdb\u4e00\u6b65\u5206\u6790\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>Info<\/strong><\/td>\n<td>\u7ebf\u7a0b\u6267\u884c\u7684 SQL \u8bed\u53e5\uff0c\u65e0 <code>FULL<\/code> \u65f6\u6700\u591a\u663e\u793a 100 \u4e2a\u5b57\u7b26\uff0c\u5e26 <code>FULL<\/code> \u663e\u793a\u5b8c\u6574\u8bed\u53e5\uff1b\u65e0\u8bed\u53e5\u65f6\u4e3a <code>NULL<\/code>\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4f7f\u7528 SHOW PROCESSLIST<\/h2>\n<h3>\u57fa\u672c\u7528\u6cd5<\/h3>\n<p>\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u6d3b\u8dc3\u7ebf\u7a0b\uff1a<\/p>\n<pre><code>SHOW PROCESSLIST;\r\n<\/code><\/pre>\n<h3>\u5b8c\u6574\u67e5\u8be2\u8be6\u60c5<\/h3>\n<p>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u5b8c\u6574\u67e5\u8be2\u8bed\u53e5\uff1a<\/p>\n<pre><code>SHOW FULL PROCESSLIST;\r\n<\/code><\/pre>\n<h3>\u793a\u4f8b\u8f93\u51fa<\/h3>\n<p>\u8fd0\u884c <code>SHOW PROCESSLIST<\/code> \u53ef\u80fd\u5f97\u5230\u4ee5\u4e0b\u7ed3\u679c\uff1a<\/p>\n<pre><code>+----+-----------------+-----------------+------+---------+------+------------------------+------------------+\r\n| Id | User            | Host            | db   | Command | Time | State                  | Info             |\r\n+----+-----------------+-----------------+------+---------+------+------------------------+------------------+\r\n| 4  | event_scheduler | localhost       | NULL | Daemon  | 1148 | Waiting on empty queue | NULL             |\r\n| 9  | root            | localhost:50255 | NULL | Query   | 0    | starting               | show processlist |\r\n+----+-----------------+-----------------+------+---------+------+------------------------+------------------+\r\n<\/code><\/pre>\n<p>\u82e5\u9009\u62e9\u9ed8\u8ba4\u6570\u636e\u5e93\uff08\u5982 <code>business<\/code>\uff09\uff0c\u8f93\u51fa\u4f1a\u66f4\u65b0\u4e3a\uff1a<\/p>\n<pre><code>+----+-----------------+-----------------+----------+---------+------+------------------------+------------------+\r\n| Id | User            | Host            | db       | Command | Time | State                  | Info             |\r\n+----+-----------------+-----------------+----------+---------+------+------------------------+------------------+\r\n| 4  | event_scheduler | localhost       | NULL     | Daemon  | 1148 | Waiting on empty queue | NULL             |\r\n| 9  | root            | localhost:50255 | business | Query   | 0    | starting               | show processlist |\r\n+----+-----------------+-----------------+----------+---------+------+------------------------+------------------+\r\n<\/code><\/pre>\n<h3>\u4e3b\u8981\u5e94\u7528\u573a\u666f<\/h3>\n<ul>\n<li><strong>\u8bca\u65ad\u6162\u67e5\u8be2<\/strong>\uff1a\u4f7f\u7528 <code>SHOW FULL PROCESSLIST<\/code> \u67e5\u770b\u5b8c\u6574\u67e5\u8be2\uff0c\u5b9a\u4f4d\u6027\u80fd\u74f6\u9888\u3002<\/li>\n<li><strong>\u7ba1\u7406\u8fde\u63a5<\/strong>\uff1a\u8bc6\u522b\u8fc7\u591a\u8fde\u63a5\u5e76\u4f7f\u7528 <code>KILL &lt;Id&gt;<\/code> \u7ec8\u6b62\u4e0d\u5fc5\u8981\u7684\u7ebf\u7a0b\u3002<\/li>\n<li><strong>\u76d1\u63a7\u590d\u5236<\/strong>\uff1a\u68c0\u67e5\u526f\u672c\u7ebf\u7a0b\u72b6\u6001\uff08\u5982 <code>Waiting for master to send event<\/code>\uff09\uff0c\u786e\u4fdd\u590d\u5236\u5065\u5eb7\u3002<\/li>\n<\/ul>\n<h2>\u6743\u9650\u4e0e\u7279\u6743<\/h2>\n<ul>\n<li><strong>\u9ed8\u8ba4\u6743\u9650<\/strong>\uff1a\u7528\u6237\u65e0\u9700\u7279\u6743\u5373\u53ef\u67e5\u770b\u81ea\u5df1\u7684\u7ebf\u7a0b\u3002<\/li>\n<li><strong>PROCESS \u6743\u9650<\/strong>\uff1a\u5141\u8bb8\u67e5\u770b\u6240\u6709\u7ebf\u7a0b\uff0c\u5305\u62ec\u5176\u4ed6\u7528\u6237\u7684\u7ebf\u7a0b\u3002<\/li>\n<li><strong>SYSTEM_USER<\/strong>\uff1a\u7528\u4e8e\u6807\u8bc6\u670d\u52a1\u5668\u5185\u90e8\u7ebf\u7a0b\uff0c\u4e0e <code>SYSTEM_USER<\/code> \u6743\u9650\u533a\u5206\u3002<\/li>\n<\/ul>\n<h2>\u4f7f\u7528 SHOW PROCESSLIST \u7684\u6700\u4f73\u5b9e\u8df5<\/h2>\n<p>\u5728<a href=\"https:\/\/server.hk\/\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\u73af\u5883\u4e2d\u6709\u6548\u4f7f\u7528 <code>SHOW PROCESSLIST<\/code> \u7684\u5efa\u8bae\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528 FULL \u9009\u9879<\/strong>\uff1a\u6392\u67e5\u6162\u67e5\u8be2\u6216\u95ee\u9898\u65f6\u59cb\u7ec8\u4f7f\u7528 <code>SHOW FULL PROCESSLIST<\/code>\u3002<\/li>\n<li><strong>\u5b9a\u671f\u76d1\u63a7<\/strong>\uff1a\u5b9a\u671f\u68c0\u67e5\u7ebf\u7a0b\u5217\u8868\uff0c\u68c0\u6d4b\u5f02\u5e38\u6d3b\u52a8\u6216\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u67e5\u8be2\u3002<\/li>\n<li><strong>\u7ed3\u5408\u5176\u4ed6\u5de5\u5177<\/strong>\uff1a\u642d\u914d <code>INFORMATION_SCHEMA.PROCESSLIST<\/code> \u6216 Performance Schema \u83b7\u53d6\u66f4\u6df1\u5165\u7684\u6d1e\u5bdf\u3002<\/li>\n<li><strong>\u8c28\u614e\u7ec8\u6b62\u7ebf\u7a0b<\/strong>\uff1a\u4f7f\u7528 <code>KILL &lt;Id&gt;<\/code> \u7ec8\u6b62\u7ebf\u7a0b\u524d\uff0c\u786e\u8ba4\u5176\u529f\u80fd\u4ee5\u907f\u514d\u5f71\u54cd\u5173\u952e\u4efb\u52a1\u3002<\/li>\n<li><strong>\u4f18\u5316\u8fde\u63a5\u9650\u5236<\/strong>\uff1a\u8c03\u6574 MySQL \u914d\u7f6e\u4e2d\u7684 <code>max_connections<\/code> \u53c2\u6570\uff0c\u9632\u6b62\u201c\u8fde\u63a5\u8fc7\u591a\u201d\u9519\u8bef\u3002<\/li>\n<\/ul>\n<h2>\u5e38\u89c1\u573a\u666f\u4e0e\u89e3\u51b3\u65b9\u6848<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u573a\u666f<\/th>\n<th>\u63cf\u8ff0<\/th>\n<th>\u89e3\u51b3\u65b9\u6848<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u8fde\u63a5\u8fc7\u591a<\/strong><\/td>\n<td>\u51fa\u73b0\u201ctoo many connections\u201d\u9519\u8bef\u3002<\/td>\n<td>\u4f7f\u7528 <code>SHOW PROCESSLIST<\/code> \u8bc6\u522b\u6d3b\u8dc3\u7ebf\u7a0b\uff0c\u7ec8\u6b62\u4e0d\u5fc5\u8981\u7ebf\u7a0b\u6216\u589e\u52a0 <code>max_connections<\/code>\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u6162\u67e5\u8be2<\/strong><\/td>\n<td>\u7ebf\u7a0b <code>Time<\/code> \u503c\u9ad8\u6216\u72b6\u6001\u5361\u4f4f\u3002<\/td>\n<td>\u4f7f\u7528 <code>SHOW FULL PROCESSLIST<\/code> \u67e5\u770b\u67e5\u8be2\uff0c\u4f18\u5316\u6216\u7ec8\u6b62\u7ebf\u7a0b\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u590d\u5236\u5ef6\u8fdf<\/strong><\/td>\n<td>\u526f\u672c\u7ebf\u7a0b <code>Time<\/code> \u503c\u9ad8\u3002<\/td>\n<td>\u68c0\u67e5\u7f51\u7edc\u6216\u4e3b\u670d\u52a1\u5668\u6027\u80fd\u95ee\u9898\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u7ed3\u8bba<\/h2>\n<p><code>SHOW PROCESSLIST<\/code> \u547d\u4ee4\u662f<a href=\"https:\/\/server.hk\/\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\u73af\u5883\u4e2d\u7ba1\u7406 MySQL \u6570\u636e\u5e93\u7684\u5fc5\u5907\u5de5\u5177\u3002\u901a\u8fc7\u5b9e\u65f6\u76d1\u63a7\u7ebf\u7a0b\u3001\u67e5\u8be2\u548c\u670d\u52a1\u5668\u72b6\u6001\uff0c\u6280\u672f\u4eba\u5458\u80fd\u591f\u5feb\u901f\u8bca\u65ad\u548c\u89e3\u51b3\u6027\u80fd\u95ee\u9898\u3002\u65e0\u8bba\u662f\u5904\u7406\u6162\u67e5\u8be2\u3001\u8fde\u63a5\u95ee\u9898\u8fd8\u662f\u590d\u5236\u5ef6\u8fdf\uff0c\u719f\u7ec3\u638c\u63e1\u8be5\u547d\u4ee4\u90fd\u80fd\u663e\u8457\u63d0\u5347\u6570\u636e\u5e93\u6548\u7387\u3002\u5982\u9700\u66f4\u591a\u4f18\u5316\u6570\u636e\u5e93\u548c\u670d\u52a1\u5668\u7684\u8d44\u6e90\uff0c\u8bf7\u8bbf\u95ee\u6211\u4eec\u7684<a href=\"https:\/\/server.hk\/\">\u4e3b\u9875<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f15\u8a00 \u5728 MySQL \u6570\u636e\u5e93\u7ba1\u7406&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-208418","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208418","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=208418"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208418\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}