{"id":1641,"date":"2025-02-14T23:15:34","date_gmt":"2025-02-14T15:15:34","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=1641"},"modified":"2025-02-14T23:20:06","modified_gmt":"2025-02-14T15:20:06","slug":"mysql-%e6%80%a7%e8%83%bd%e8%b0%83%e4%bc%98%e4%b8%8e%e7%9b%91%e6%8e%a7%ef%bc%9a%e4%bc%98%e5%8c%96%e9%85%8d%e7%bd%ae%e4%b8%8e%e6%9f%a5%e8%af%a2%e5%88%86%e6%9e%90%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/02\/14\/mysql-%e6%80%a7%e8%83%bd%e8%b0%83%e4%bc%98%e4%b8%8e%e7%9b%91%e6%8e%a7%ef%bc%9a%e4%bc%98%e5%8c%96%e9%85%8d%e7%bd%ae%e4%b8%8e%e6%9f%a5%e8%af%a2%e5%88%86%e6%9e%90%e6%8c%87%e5%8d%97\/","title":{"rendered":"MySQL \u6027\u80fd\u8c03\u4f18\u4e0e\u76d1\u63a7\uff1a\u4f18\u5316\u914d\u7f6e\u4e0e\u67e5\u8be2\u5206\u6790\u6307\u5357"},"content":{"rendered":"\r\n

\u7ee7\u7eed\u6df1\u5165\u5b66\u4e60 MySQL \u6027\u80fd\u8c03\u4f18\u4e0e\u76d1\u63a7<\/strong>\uff0c\u8fd9\u4e00\u90e8\u5206\u5c06\u8be6\u7ec6\u4ecb\u7ecd MySQL \u6027\u80fd\u4f18\u5316\u7684\u6280\u672f\u4e0e\u65b9\u6cd5\uff0c\u6db5\u76d6\u67e5\u8be2\u4f18\u5316\u3001\u7d22\u5f15\u4f18\u5316\u3001\u670d\u52a1\u5668\u914d\u7f6e\u3001\u7f13\u5b58\u7ba1\u7406\u3001\u5e76\u53d1\u63a7\u5236\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528 MySQL \u5185\u7f6e\u5de5\u5177\u8fdb\u884c\u6027\u80fd\u76d1\u63a7\u548c\u6545\u969c\u6392\u67e5\u3002<\/p>\r\n\r\n\r\n\r\n

1. \u67e5\u8be2\u4f18\u5316<\/strong><\/h3>\r\n\r\n\r\n\r\n

\u67e5\u8be2\u4f18\u5316\u662f MySQL \u6027\u80fd\u8c03\u4f18\u4e2d\u6700\u91cd\u8981\u7684\u4e00\u73af\uff0c\u4e3b\u8981\u901a\u8fc7\u51cf\u5c11\u67e5\u8be2\u65f6\u95f4\u3001\u964d\u4f4e I\/O \u64cd\u4f5c\u3001\u4f18\u5316\u6267\u884c\u8ba1\u5212\u7b49\u65b9\u5f0f\u6765\u63d0\u5347\u6570\u636e\u5e93\u6027\u80fd\u3002<\/p>\r\n\r\n\r\n\r\n

1.1. EXPLAIN \u5206\u6790<\/strong><\/h4>\r\n\r\n\r\n\r\n

EXPLAIN<\/code> \u547d\u4ee4\u662f MySQL \u63d0\u4f9b\u7684\u5f3a\u5927\u5de5\u5177\uff0c\u7528\u4e8e\u67e5\u770b\u67e5\u8be2\u7684\u6267\u884c\u8ba1\u5212\u3002\u901a\u8fc7\u5206\u6790 EXPLAIN<\/code> \u8f93\u51fa\uff0c\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\u6f5c\u5728\u7684\u6027\u80fd\u74f6\u9888\uff0c\u5e76\u8fdb\u884c\u4f18\u5316\u3002<\/p>\r\n\r\n\r\n\r\n

    \r\n
  • \u4f7f\u7528 EXPLAIN<\/strong>\uff1a<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
      EXPLAIN SELECT * FROM users WHERE age > 30;<\/code><\/pre>\r\n\r\n\r\n\r\n
      \r\n
    • EXPLAIN \u8f93\u51fa\u5b57\u6bb5<\/strong>\uff1a<\/li>\r\n\r\n\r\n\r\n
    • id<\/strong>\uff1a\u67e5\u8be2\u7684\u6807\u8bc6\u7b26\uff0c\u6570\u5b57\u8d8a\u5c0f\u4f18\u5148\u7ea7\u8d8a\u9ad8\u3002<\/li>\r\n\r\n\r\n\r\n
    • select_type<\/strong>\uff1a\u67e5\u8be2\u7684\u7c7b\u578b\uff0c\u5e38\u89c1\u7684\u6709 SIMPLE<\/code>\uff08\u7b80\u5355\u67e5\u8be2\uff09\u3001PRIMARY<\/code>\uff08\u4e3b\u67e5\u8be2\uff09\u548c SUBQUERY<\/code>\uff08\u5b50\u67e5\u8be2\uff09\u3002<\/li>\r\n\r\n\r\n\r\n
    • table<\/strong>\uff1a\u67e5\u8be2\u6d89\u53ca\u7684\u8868\u3002<\/li>\r\n\r\n\r\n\r\n
    • type<\/strong>\uff1a\u8fde\u63a5\u7c7b\u578b\uff0cALL<\/code> \u8868\u793a\u5168\u8868\u626b\u63cf\uff0cindex<\/code> \u8868\u793a\u4f7f\u7528\u7d22\u5f15\uff0crange<\/code> \u8868\u793a\u8303\u56f4\u67e5\u8be2\u3002<\/li>\r\n\r\n\r\n\r\n
    • key<\/strong>\uff1a\u4f7f\u7528\u7684\u7d22\u5f15\u540d\u79f0\u3002<\/li>\r\n\r\n\r\n\r\n
    • rows<\/strong>\uff1a\u626b\u63cf\u7684\u884c\u6570\u3002<\/li>\r\n\r\n\r\n\r\n
    • \u4f18\u5316\u7b56\u7565<\/strong>\uff1a<\/li>\r\n\r\n\r\n\r\n
    • \u5c3d\u91cf\u907f\u514d\u5168\u8868\u626b\u63cf\uff0c\u786e\u4fdd\u67e5\u8be2\u4f7f\u7528\u7d22\u5f15\u3002<\/li>\r\n\r\n\r\n\r\n
    • \u907f\u514d\u5728 WHERE<\/code> \u5b50\u53e5\u4e2d\u5bf9\u5217\u8fdb\u884c\u51fd\u6570\u8ba1\u7b97\uff08\u4f1a\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\uff09\u3002<\/li>\r\n\r\n\r\n\r\n
    • \u4f7f\u7528\u9002\u5f53\u7684 JOIN<\/code> \u7c7b\u578b\uff0c\u907f\u514d\u8fc7\u591a\u7684 JOIN<\/code>\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
      1.2. \u4f7f\u7528\u7d22\u5f15\u4f18\u5316\u67e5\u8be2<\/strong><\/h4>\r\n\r\n\r\n\r\n
      \u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u7684\u5173\u952e\u5de5\u5177\uff0c\u4f46\u4e0d\u5f53\u7684\u7d22\u5f15\u4f7f\u7528\u53ef\u80fd\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/p>\r\n\r\n\r\n\r\n
        \r\n
      • \u521b\u5efa\u5408\u9002\u7684\u7d22\u5f15<\/strong>\uff1a\u6839\u636e\u67e5\u8be2\u7684 WHERE<\/code>\u3001JOIN<\/code> \u548c ORDER BY<\/code> \u5b50\u53e5\u521b\u5efa\u7d22\u5f15\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
          CREATE INDEX idx_age ON users(age);<\/code><\/pre>\r\n\r\n\r\n\r\n
          \r\n
        • \u590d\u5408\u7d22\u5f15<\/strong>\uff1a\u5982\u679c\u67e5\u8be2\u7ecf\u5e38\u6839\u636e\u591a\u4e2a\u5217\u8fdb\u884c\u7b5b\u9009\uff0c\u53ef\u4ee5\u4f7f\u7528\u590d\u5408\u7d22\u5f15\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
            CREATE INDEX idx_username_age ON users(username, age);<\/code><\/pre>\r\n\r\n\r\n\r\n
            \r\n
          • \u907f\u514d\u8fc7\u591a\u7d22\u5f15<\/strong>\uff1a\u867d\u7136\u7d22\u5f15\u53ef\u4ee5\u52a0\u901f\u67e5\u8be2\uff0c\u4f46\u8fc7\u591a\u7684\u7d22\u5f15\u4f1a\u5f71\u54cd INSERT<\/code>\u3001UPDATE<\/code> \u548c DELETE<\/code> \u64cd\u4f5c\u7684\u6027\u80fd\u3002<\/li>\r\n\r\n\r\n\r\n
          • \u8986\u76d6\u7d22\u5f15<\/strong>\uff1a\u5982\u679c\u67e5\u8be2\u6240\u9700\u7684\u6240\u6709\u5217\u90fd\u5305\u542b\u5728\u7d22\u5f15\u4e2d\uff0cMySQL \u4f1a\u76f4\u63a5\u4ece\u7d22\u5f15\u4e2d\u83b7\u53d6\u6570\u636e\uff0c\u800c\u4e0d\u9700\u8981\u8bbf\u95ee\u6570\u636e\u8868\uff0c\u8fd9\u79f0\u4e3a\u8986\u76d6\u7d22\u5f15\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
              CREATE INDEX idx_username ON users(username);\r\n  SELECT username FROM users WHERE username = 'john';  -- \u4f7f\u7528\u8986\u76d6\u7d22\u5f15<\/code><\/pre>\r\n\r\n\r\n\r\n
            1.3. \u67e5\u8be2\u7f13\u5b58<\/strong><\/h4>\r\n\r\n\r\n\r\n
            MySQL \u7684\u67e5\u8be2\u7f13\u5b58\u53ef\u4ee5\u5c06\u67e5\u8be2\u7ed3\u679c\u7f13\u5b58\u5230\u5185\u5b58\u4e2d\uff0c\u4ee5\u907f\u514d\u91cd\u590d\u67e5\u8be2\u76f8\u540c\u6570\u636e\u65f6\u7684 I\/O \u64cd\u4f5c\u3002<\/p>\r\n\r\n\r\n\r\n
              \r\n
            • \u542f\u7528\u67e5\u8be2\u7f13\u5b58<\/strong>\uff1a
              \u5728 MySQL \u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6e\uff1a<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                query_cache_type = 1\r\n  query_cache_size = 128M<\/code><\/pre>\r\n\r\n\r\n\r\n
                \r\n
              • \u67e5\u8be2\u7f13\u5b58\u5931\u6548\u7684\u60c5\u51b5<\/strong>\uff1a<\/li>\r\n\r\n\r\n\r\n
              • INSERT<\/code>\u3001UPDATE<\/code> \u548c DELETE<\/code> \u64cd\u4f5c\u4f1a\u5bfc\u81f4\u67e5\u8be2\u7f13\u5b58\u5931\u6548\u3002<\/li>\r\n\r\n\r\n\r\n
              • \u67e5\u8be2\u7f13\u5b58\u9002\u7528\u4e8e\u9759\u6001\u6570\u636e\u67e5\u8be2\uff0c\u5bf9\u4e8e\u9891\u7e41\u66f4\u65b0\u7684\u6570\u636e\u8868\u4e0d\u9002\u5408\u4f7f\u7528\u67e5\u8be2\u7f13\u5b58\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                2. \u6570\u636e\u5e93\u670d\u52a1\u5668\u914d\u7f6e\u8c03\u4f18<\/strong><\/h3>\r\n\r\n\r\n\r\n
                2.1. \u5185\u5b58\u914d\u7f6e<\/strong><\/h4>\r\n\r\n\r\n\r\n
                  \r\n
                • innodb_buffer_pool_size<\/strong>\uff1a\u8fd9\u4e2a\u53c2\u6570\u63a7\u5236 InnoDB \u5b58\u50a8\u5f15\u64ce\u7684\u7f13\u51b2\u6c60\u5927\u5c0f\uff0c\u76f4\u63a5\u5f71\u54cd\u6570\u636e\u7684\u8bfb\u53d6\u548c\u5199\u5165\u6027\u80fd\u3002\u901a\u5e38\uff0c\u5efa\u8bae\u5c06\u5176\u8bbe\u7f6e\u4e3a\u670d\u52a1\u5668\u5185\u5b58\u7684 70%-80%\uff08\u5bf9\u4e8e\u53ea\u8fd0\u884c MySQL \u7684\u670d\u52a1\u5668\uff09\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                    innodb_buffer_pool_size = 8G<\/code><\/pre>\r\n\r\n\r\n\r\n
                    \r\n
                  • key_buffer_size<\/strong>\uff1a\u5bf9\u4e8e MyISAM \u5b58\u50a8\u5f15\u64ce\uff0ckey_buffer_size<\/code> \u63a7\u5236\u7d22\u5f15\u7f13\u5b58\u7684\u5927\u5c0f\u3002\u5982\u679c\u4f7f\u7528 MyISAM \u5b58\u50a8\u5f15\u64ce\uff0c\u53ef\u4ee5\u589e\u5927\u6b64\u53c2\u6570\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                      key_buffer_size = 2G<\/code><\/pre>\r\n\r\n\r\n\r\n
                      \r\n
                    • tmp_table_size<\/strong> \u548c max_heap_table_size<\/strong>\uff1a\u8fd9\u4e9b\u53c2\u6570\u63a7\u5236\u5185\u5b58\u4e34\u65f6\u8868\u7684\u5927\u5c0f\uff0c\u8fc7\u5c0f\u7684\u503c\u4f1a\u5bfc\u81f4 MySQL \u521b\u5efa\u78c1\u76d8\u4e34\u65f6\u8868\uff0c\u4ece\u800c\u5f71\u54cd\u6027\u80fd\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                        tmp_table_size = 256M\r\n  max_heap_table_size = 256M<\/code><\/pre>\r\n\r\n\r\n\r\n
                      2.2. \u8fde\u63a5\u4e0e\u7ebf\u7a0b\u914d\u7f6e<\/strong><\/h4>\r\n\r\n\r\n\r\n
                        \r\n
                      • max_connections<\/strong>\uff1a\u9650\u5236\u53ef\u4ee5\u540c\u65f6\u8fde\u63a5\u5230\u6570\u636e\u5e93\u7684\u5ba2\u6237\u7aef\u6570\u91cf\u3002\u5982\u679c\u6570\u636e\u5e93\u8d1f\u8f7d\u8f83\u9ad8\uff0c\u53ef\u4ee5\u8003\u8651\u589e\u52a0\u6b64\u503c\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                          max_connections = 200<\/code><\/pre>\r\n\r\n\r\n\r\n
                          \r\n
                        • thread_cache_size<\/strong>\uff1a\u63a7\u5236\u7ebf\u7a0b\u7f13\u5b58\u7684\u5927\u5c0f\uff0c\u589e\u5927\u6b64\u503c\u53ef\u4ee5\u51cf\u5c11\u7ebf\u7a0b\u7684\u521b\u5efa\u548c\u9500\u6bc1\uff0c\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                            thread_cache_size = 50<\/code><\/pre>\r\n\r\n\r\n\r\n
                          2.3. \u78c1\u76d8 I\/O \u914d\u7f6e<\/strong><\/h4>\r\n\r\n\r\n\r\n
                            \r\n
                          • innodb_flush_log_at_trx_commit<\/strong>\uff1a\u63a7\u5236\u4e8b\u52a1\u65e5\u5fd7\u7684\u5237\u65b0\u65b9\u5f0f\uff0c\u8bbe\u7f6e\u4e3a 1<\/code> \u65f6\uff0c\u6bcf\u6b21\u63d0\u4ea4\u4e8b\u52a1\u90fd\u4f1a\u5c06\u65e5\u5fd7\u5199\u5165\u78c1\u76d8\uff0c\u4fdd\u8bc1\u6700\u5927\u7684\u4e00\u81f4\u6027\uff0c\u4f46\u6027\u80fd\u8f83\u4f4e\u3002\u5982\u679c\u53ef\u4ee5\u5bb9\u5fcd\u4e00\u5b9a\u7684\u6570\u636e\u4e22\u5931\uff0c\u53ef\u4ee5\u5c06\u5176\u8bbe\u7f6e\u4e3a 2<\/code> \u6216 0<\/code>\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                              innodb_flush_log_at_trx_commit = 1<\/code><\/pre>\r\n\r\n\r\n\r\n
                              \r\n
                            • innodb_io_capacity<\/strong>\uff1a\u63a7\u5236 InnoDB \u7684 I\/O \u6027\u80fd\uff0c\u9002\u5f53\u589e\u52a0\u8be5\u503c\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u7279\u522b\u662f\u5728\u9ad8\u5e76\u53d1\u7684\u73af\u5883\u4e2d\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                                innodb_io_capacity = 2000<\/code><\/pre>\r\n\r\n\r\n\r\n
                              3. \u5e76\u53d1\u63a7\u5236\u4e0e\u9501\u4f18\u5316<\/strong><\/h3>\r\n\r\n\r\n\r\n
                              3.1. \u9501\u673a\u5236<\/strong><\/h4>\r\n\r\n\r\n\r\n
                              MySQL \u4f7f\u7528\u4e0d\u540c\u7684\u9501\u673a\u5236\u6765\u63a7\u5236\u5e76\u53d1\u64cd\u4f5c\uff0c\u7406\u89e3\u9501\u7684\u7c7b\u578b\u548c\u907f\u514d\u9501\u7684\u4e89\u7528\u662f\u63d0\u5347\u5e76\u53d1\u6027\u80fd\u7684\u5173\u952e\u3002<\/p>\r\n\r\n\r\n\r\n
                                \r\n
                              • \u884c\u9501<\/strong>\uff1aInnoDB \u652f\u6301\u884c\u9501\uff0c\u5141\u8bb8\u5e76\u53d1\u4e8b\u52a1\u5bf9\u4e0d\u540c\u7684\u884c\u8fdb\u884c\u64cd\u4f5c\u3002<\/li>\r\n\r\n\r\n\r\n
                              • \u8868\u9501<\/strong>\uff1aMyISAM \u548c InnoDB \u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u4f1a\u4f7f\u7528\u8868\u9501\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u6027\u80fd\u74f6\u9888\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                                3.2. \u6b7b\u9501<\/strong><\/h4>\r\n\r\n\r\n\r\n
                                \u6b7b\u9501\u53d1\u751f\u65f6\uff0c\u4e24\u4e2a\u6216\u591a\u4e2a\u4e8b\u52a1\u76f8\u4e92\u7b49\u5f85\u5bf9\u65b9\u91ca\u653e\u9501\uff0c\u5bfc\u81f4\u4e8b\u52a1\u65e0\u6cd5\u7ee7\u7eed\u6267\u884c\u3002MySQL \u4f1a\u81ea\u52a8\u68c0\u6d4b\u6b7b\u9501\u5e76\u56de\u6eda\u5176\u4e2d\u4e00\u4e2a\u4e8b\u52a1\u3002<\/p>\r\n\r\n\r\n\r\n
                                  \r\n
                                • \u6b7b\u9501\u76d1\u63a7<\/strong>\uff1a
                                  \u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u6b7b\u9501\u4fe1\u606f\uff1a<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                                    SHOW ENGINE INNODB STATUS;<\/code><\/pre>\r\n\r\n\r\n\r\n
                                    \r\n
                                  • \u6b7b\u9501\u4f18\u5316<\/strong>\uff1a<\/li>\r\n\r\n\r\n\r\n
                                  • \u907f\u514d\u591a\u4e2a\u4e8b\u52a1\u5728\u4e0d\u540c\u987a\u5e8f\u4e2d\u9501\u5b9a\u8d44\u6e90\u3002<\/li>\r\n\r\n\r\n\r\n
                                  • \u5c3d\u91cf\u51cf\u5c11\u4e8b\u52a1\u7684\u6267\u884c\u65f6\u95f4\uff0c\u907f\u514d\u957f\u65f6\u95f4\u6301\u6709\u9501\u3002<\/li>\r\n\r\n\r\n\r\n
                                  • \u4f7f\u7528\u8f83\u5c0f\u7c92\u5ea6\u7684\u9501\uff08\u5982\u884c\u9501\u4ee3\u66ff\u8868\u9501\uff09\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                                    4. \u6027\u80fd\u76d1\u63a7\u4e0e\u6545\u969c\u6392\u67e5<\/strong><\/h3>\r\n\r\n\r\n\r\n
                                    4.1. \u6162\u67e5\u8be2\u65e5\u5fd7<\/strong><\/h4>\r\n\r\n\r\n\r\n
                                    \u6162\u67e5\u8be2\u65e5\u5fd7\u662f MySQL \u63d0\u4f9b\u7684\u4e00\u9879\u529f\u80fd\uff0c\u7528\u4e8e\u8bb0\u5f55\u6267\u884c\u65f6\u95f4\u8d85\u8fc7\u6307\u5b9a\u9608\u503c\u7684\u67e5\u8be2\u3002\u901a\u8fc7\u5206\u6790\u6162\u67e5\u8be2\u65e5\u5fd7\uff0c\u80fd\u591f\u53d1\u73b0\u6027\u80fd\u74f6\u9888\u5e76\u4f18\u5316\u67e5\u8be2\u3002<\/p>\r\n\r\n\r\n\r\n
                                      \r\n
                                    • \u542f\u7528\u6162\u67e5\u8be2\u65e5\u5fd7<\/strong>\uff1a
                                      \u5728 MySQL \u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6e\uff1a<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                                        slow_query_log = 1\r\n  slow_query_log_file = \/var\/log\/mysql\/mysql-slow.log\r\n  long_query_time = 1<\/code><\/pre>\r\n\r\n\r\n\r\n
                                        \r\n
                                      • \u5206\u6790\u6162\u67e5\u8be2\u65e5\u5fd7<\/strong>\uff1a
                                        \u4f7f\u7528 mysqldumpslow<\/code> \u5de5\u5177\u6765\u5206\u6790\u6162\u67e5\u8be2\u65e5\u5fd7\uff0c\u627e\u51fa\u6267\u884c\u65f6\u95f4\u6700\u957f\u7684\u67e5\u8be2\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                                        4.2. \u6027\u80fd\u6a21\u5f0f\uff08Performance Schema\uff09<\/strong><\/h4>\r\n\r\n\r\n\r\n
                                        Performance Schema \u662f MySQL \u63d0\u4f9b\u7684\u4e00\u4e2a\u5185\u7f6e\u7684\u6027\u80fd\u76d1\u63a7\u5de5\u5177\uff0c\u80fd\u591f\u63d0\u4f9b\u8be6\u7ec6\u7684\u6570\u636e\u5e93\u6027\u80fd\u6570\u636e\uff0c\u5305\u62ec\u7ebf\u7a0b\u3001I\/O\u3001\u8868\u626b\u63cf\u7b49\u3002<\/p>\r\n\r\n\r\n\r\n
                                          \r\n
                                        • \u542f\u7528 Performance Schema<\/strong>\uff1a
                                          \u5728 MySQL \u914d\u7f6e\u6587\u4ef6\u4e2d\u542f\u7528\uff1a<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                                            performance_schema = ON<\/code><\/pre>\r\n\r\n\r\n\r\n
                                            \r\n
                                          • \u67e5\u8be2\u6027\u80fd\u6570\u636e<\/strong>\uff1a
                                            \u67e5\u8be2\u7ebf\u7a0b\u7684\u6267\u884c\u60c5\u51b5\uff1a<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
                                              SELECT * FROM performance_schema.events_statements_summary_by_digest;<\/code><\/pre>\r\n\r\n\r\n\r\n
                                            4.3. InnoDB \u72b6\u6001<\/strong><\/h4>\r\n\r\n\r\n\r\n
                                            \u901a\u8fc7\u67e5\u8be2 SHOW ENGINE INNODB STATUS<\/code>\uff0c\u53ef\u4ee5\u67e5\u770b InnoDB \u5b58\u50a8\u5f15\u64ce\u7684\u5f53\u524d\u72b6\u6001\uff0c\u5305\u62ec\u7f13\u51b2\u6c60\u4f7f\u7528\u60c5\u51b5\u3001\u9501\u4fe1\u606f\u3001\u6b7b\u9501\u7b49\u3002<\/p>\r\n\r\n\r\n\r\n
                                            SHOW ENGINE INNODB STATUS;<\/code><\/pre>\r\n\r\n\r\n\r\n
                                            4.4. \u7cfb\u7edf\u72b6\u6001<\/strong><\/h4>\r\n\r\n\r\n\r\n
                                            \u4f7f\u7528 SHOW STATUS<\/code> \u547d\u4ee4\u67e5\u770b\u670d\u52a1\u5668\u7684\u72b6\u6001\u53d8\u91cf\uff0c\u83b7\u53d6\u5173\u4e8e\u8fde\u63a5\u6570\u3001\u67e5\u8be2\u91cf\u3001\u7f13\u5b58\u547d\u4e2d\u7387\u7b49\u7684\u4fe1\u606f\u3002<\/p>\r\n\r\n\r\n\r\n
                                            SHOW STATUS;<\/code><\/pre>\r\n\r\n\r\n\r\n
                                            4.5. \u4f7f\u7528\u5916\u90e8\u5de5\u5177<\/strong><\/h4>\r\n\r\n\r\n\r\n
                                              \r\n
                                            • Percona Monitoring and Management (PMM)<\/strong>\uff1a\u4e00\u6b3e\u5f3a\u5927\u7684 MySQL \u6027\u80fd\u76d1\u63a7\u5de5\u5177\uff0c\u63d0\u4f9b\u56fe\u5f62\u5316\u7684\u6027\u80fd\u5206\u6790\u3002<\/li>\r\n\r\n\r\n\r\n
                                            • MySQL Enterprise Monitor<\/strong>\uff1aMySQL \u5b98\u65b9\u63d0\u4f9b\u7684\u76d1\u63a7\u5de5\u5177\uff0c\u53ef\u4ee5\u5b9e\u65f6\u8ddf\u8e2a\u6570\u636e\u5e93\u7684\u6027\u80fd\u3002<\/li>\r\n<\/ul>\r\n\r\n\r\n
                                              \r\n\r\n\r\n
                                              \u603b\u7ed3<\/h3>\r\n\r\n\r\n\r\n
                                              \u8fd9\u4e00\u90e8\u5206\u8be6\u7ec6\u4ecb\u7ecd\u4e86 MySQL \u6027\u80fd\u8c03\u4f18\u4e0e\u76d1\u63a7\u7684\u5404\u4e2a\u65b9\u9762\uff0c\u5305\u62ec\u67e5\u8be2\u4f18\u5316\u3001\u6570\u636e\u5e93\u670d\u52a1\u5668\u914d\u7f6e\u8c03\u4f18\u3001\u5e76\u53d1\u63a7\u5236\u3001\u9501\u673a\u5236\u3001\u6162\u67e5\u8be2\u65e5\u5fd7\u548c\u6027\u80fd\u76d1\u63a7\u5de5\u5177\u3002\u901a\u8fc7\u5408\u7406\u7684\u6027\u80fd\u8c03\u4f18\uff0c\u53ef\u4ee5\u663e\u8457\u63d0\u5347 MySQL \u7684\u54cd\u5e94\u901f\u5ea6\u548c\u5e76\u53d1\u5904\u7406\u80fd\u529b\u3002<\/p>\r\n","protected":false},"excerpt":{"rendered":"
                                              \u7ee7\u7eed\u6df1\u5165\u5b66\u4e60 MySQL \u6027\u80fd\u8c03\u4f18\u4e0e\u76d1\u63a7\uff0c\u8fd9\u4e00\u90e8\u5206\u5c06\u8be6\u7ec6\u4ecb\u7ecd MySQL \u6027\u80fd\u4f18\u5316\u7684\u6280\u672f\u4e0e\u65b9\u6cd5\uff0c\u6db5\u76d6\u67e5\u8be2\u4f18\u5316\u3001 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-1641","post","type-post","status-publish","format-standard","hentry","category-mysql"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1641","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=1641"}],"version-history":[{"count":2,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1641\/revisions"}],"predecessor-version":[{"id":1646,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/1641\/revisions\/1646"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=1641"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=1641"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=1641"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}