{"id":15948,"date":"2025-04-18T22:27:01","date_gmt":"2025-04-18T14:27:01","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/15948.html"},"modified":"2025-04-18T22:27:01","modified_gmt":"2025-04-18T14:27:01","slug":"mysql-%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%8f%82%e6%95%b0%e8%b0%83%e4%bc%98%ef%bc%9ainnodb-%e7%bc%93%e5%86%b2%e6%b1%a0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/15948.html","title":{"rendered":"MySQL \u670d\u52a1\u5668\u53c2\u6570\u8c03\u4f18\uff1aInnoDB \u7f13\u51b2\u6c60"},"content":{"rendered":"

\u5728 MySQL InnoDB \u5b58\u50a8\u5f15\u64ce \u4e2d，innodb_buffer_pool_size \u662f\u5f71\u54cd \u6570\u636e\u5e93\u6027\u80fd \u7684\u6700\u91cd\u8981\u7684\u53c2\u6570\u4e4b\u4e00\u3002\u5b83\u51b3\u5b9a\u4e86 InnoDB \u7f13\u51b2\u6c60\u7684\u5927\u5c0f，\u76f4\u63a5\u5f71\u54cd \u6570\u636e\u548c\u7d22\u5f15\u7684\u7f13\u5b58\u80fd\u529b，\u4ece\u800c\u63d0\u5347 \u67e5\u8be2\u6027\u80fd \u5e76\u51cf\u5c11 \u78c1\u76d8 I\/O\u3002\u5982\u679c innodb_buffer_pool_size \u8fc7\u5c0f，MySQL \u9891\u7e41\u4ece\u78c1\u76d8\u8bfb\u53d6\u6570\u636e，\u67e5\u8be2\u53d8\u6162；\u5982\u679c\u5408\u7406\u8c03\u4f18，\u5927\u90e8\u5206\u67e5\u8be2\u53ef\u4ee5\u76f4\u63a5\u4ece\u5185\u5b58\u4e2d\u8bfb\u53d6，\u63d0\u9ad8\u6570\u636e\u5e93\u541e\u5410\u91cf\u3002\u672c\u6587\u5c06\u4ecb\u7ecd： \u2705 innodb_buffer_pool_size \u7684\u4f5c\u7528 \u2705 \u5982\u4f55\u8bbe\u7f6e\u5408\u9002\u7684 innodb_buffer_pool_size \u2705 \u76d1\u63a7\u548c\u4f18\u5316\u7f13\u51b2\u6c60\u4f7f\u7528\u7387，\u63d0\u9ad8 MySQL \u8fd0\u884c\u6548\u7387<\/p>\n

\n

1. \u4ec0\u4e48\u662f InnoDB \u7f13\u51b2\u6c60 (innodb_buffer_pool_size)？<\/h2>\n

1.1 InnoDB \u7f13\u51b2\u6c60\u7684\u4f5c\u7528<\/h3>\n

InnoDB \u4f5c\u4e3a MySQL \u9ed8\u8ba4\u5b58\u50a8\u5f15\u64ce，\u5927\u91cf\u4f9d\u8d56 \u7f13\u51b2\u6c60（Buffer Pool） \u6765\u63d0\u9ad8\u6570\u636e\u8bbf\u95ee\u901f\u5ea6\u3002\u7f13\u51b2\u6c60\u7684\u4e3b\u8981\u4f5c\u7528\u5305\u62ec：<\/p>\n

  • \u7f13\u5b58\u6570\u636e\u9875：\u51cf\u5c11\u78c1\u76d8 I\/O，\u63d0\u9ad8\u67e5\u8be2\u901f\u5ea6\u3002<\/li>\n
  • \u7f13\u5b58\u7d22\u5f15\u9875：\u52a0\u5feb\u7d22\u5f15\u67e5\u8be2，\u907f\u514d\u9891\u7e41\u78c1\u76d8\u8bbf\u95ee\u3002<\/li>\n
  • \u7f13\u5b58 Undo \u65e5\u5fd7：\u63d0\u9ad8\u4e8b\u52a1\u6027\u80fd，\u51cf\u5c11\u78c1\u76d8\u5199\u5165\u3002<\/li>\n
  • \u7f13\u5b58 Doublewrite Buffer：\u63d0\u9ad8\u6570\u636e\u5b89\u5168\u6027，\u51cf\u5c11\u5199\u5165\u635f\u574f\u7684\u53ef\u80fd\u3002<\/li>\n

    📌 \u7b80\u5355\u7406\u89e3：<\/p>\n

    innodb_buffer_pool_size \u5c31\u50cf MySQL \u7684\u5185\u5b58\u7f13\u5b58，\u6570\u636e\u548c\u7d22\u5f15\u9875\u4f1a\u5c3d\u53ef\u80fd\u7f13\u5b58\u5230\u8fd9\u91cc，\u51cf\u5c11\u78c1\u76d8\u8bfb\u53d6，\u63d0\u9ad8\u6570\u636e\u5e93\u6027\u80fd\u3002<\/p>\n

    \n

    2. \u5982\u4f55\u8bbe\u7f6e innodb_buffer_pool_size？<\/h2>\n

    2.1 \u63a8\u8350\u503c\u8ba1\u7b97<\/h3>\n

    \u4e00\u822c\u5efa\u8bae：<\/p>\n

      \n
    • \u4e13\u7528 MySQL \u670d\u52a1\u5668（\u4ec5\u8fd0\u884c MySQL）：innodb_buffer_pool_size \u8bbe\u4e3a \u7269\u7406\u5185\u5b58\u7684 50%~75%\u3002<\/li>\n
    • \u4e0e\u5176\u4ed6\u5e94\u7528\u5171\u4eab\u670d\u52a1\u5668：\u8bbe\u4e3a \u7269\u7406\u5185\u5b58\u7684 25%~50%，\u907f\u514d\u5f71\u54cd\u5176\u4ed6\u7a0b\u5e8f\u8fd0\u884c\u3002<\/li>\n
    • MySQL \u4e3b\u8981\u662f InnoDB \u8868：\u5efa\u8bae\u5c3d\u53ef\u80fd\u589e\u5927\u7f13\u51b2\u6c60\u3002<\/li>\n<\/ul>\n

      📌 \u793a\u4f8b\u8ba1\u7b97：<\/p>\n\n\u670d\u52a1\u5668\u603b\u5185\u5b58\u63a8\u8350 innodb_buffer_pool_size<\/tr>\n\n\n\n\n\n
      4GB<\/td>\n2GB – 3GB<\/td>\n<\/tr>\n
      8GB<\/td>\n4GB – 6GB<\/td>\n<\/tr>\n
      16GB<\/td>\n8GB – 12GB<\/td>\n<\/tr>\n
      32GB<\/td>\n16GB – 24GB<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \n

      2.2 \u67e5\u770b\u5f53\u524d innodb_buffer_pool_size<\/h3>\n

      SHOW<\/span> VARIABLES LIKE<\/span> 'innodb_buffer_pool_size'<\/span>;<\/span><\/p>\n

      \u793a\u4f8b\u8f93\u51fa：<\/p>\n

      +————————-+————+
      \n|<\/span> Variable_name |<\/span> Value |<\/span>
      \n+————————-+————+
      \n|<\/span> innodb_buffer_pool_size |<\/span> 134217728<\/span> |<\/span> — 128MB
      \n+————————-+————+<\/p>\n

      📌 134217728 \u8868\u793a 128MB，MySQL \u9ed8\u8ba4\u8f83\u5c0f，\u9700\u8981\u624b\u52a8\u8c03\u6574！<\/p>\n

      \n

      2.3 \u8c03\u6574 innodb_buffer_pool_size<\/h3>\n

      \u65b9\u6cd5 1：\u4e34\u65f6\u8c03\u6574（\u91cd\u542f\u5931\u6548）<\/h4>\n

      SET<\/span> GLOBAL<\/span> innodb_buffer_pool_size =<\/span> 8<\/span> *<\/span> 1024<\/span> *<\/span> 1024<\/span> *<\/span> 1024<\/span>;<\/span> — 8GB<\/span><\/p>\n

      📌 \u6ce8\u610f：\u6b64\u65b9\u6cd5 \u91cd\u542f MySQL \u540e\u4f1a\u5931\u6548，\u9700\u8981\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\u4f7f\u5176\u6c38\u4e45\u751f\u6548\u3002<\/p>\n

      \u65b9\u6cd5 2：\u6c38\u4e45\u8c03\u6574（\u4fee\u6539 my.cnf \u6216 my.ini）<\/h4>\n

      \u7f16\u8f91 my.cnf（Linux）\u6216 my.ini（Windows）：<\/p>\n

      [<\/span>mysqld]<\/span>
      \ninnodb_buffer_pool_size =<\/span> 8G<\/p>\n

      \u91cd\u542f MySQL \u4f7f\u914d\u7f6e\u751f\u6548：<\/p>\n

      systemctl restart mysql<\/p>\n

      📌 \u6700\u4f73\u5b9e\u8df5：<\/p>\n

        \n
      • \u9010\u6b65\u589e\u5927 innodb_buffer_pool_size，\u89c2\u5bdf\u6570\u636e\u5e93\u6027\u80fd\u3002<\/li>\n
      • \u907f\u514d\u8bbe\u7f6e\u8fc7\u5927，\u4fdd\u8bc1\u64cd\u4f5c\u7cfb\u7edf\u8fd8\u6709\u8db3\u591f\u7684\u5185\u5b58\u7528\u4e8e\u5176\u4ed6\u4efb\u52a1\u3002<\/li>\n<\/ul>\n
        \n

        3. \u76d1\u63a7 InnoDB \u7f13\u51b2\u6c60\u4f7f\u7528\u60c5\u51b5<\/h2>\n

        3.1 \u76d1\u63a7\u7f13\u51b2\u6c60\u547d\u4e2d\u7387<\/h3>\n

        SHOW<\/span> GLOBAL<\/span> STATUS<\/span> LIKE<\/span> 'Innodb_buffer_pool_read%'<\/span>;<\/span><\/p>\n

        \u793a\u4f8b\u8f93\u51fa：<\/p>\n

        +———————————-+——–+
        \n|<\/span> Variable_name |<\/span> Value |<\/span>
        \n+———————————-+——–+
        \n|<\/span> Innodb_buffer_pool_read_requests |<\/span> 100000<\/span> |<\/span>
        \n|<\/span> Innodb_buffer_pool_reads |<\/span> 500<\/span> |<\/span>
        \n+———————————-+——–+<\/p>\n

        📌 \u8ba1\u7b97\u547d\u4e2d\u7387：<\/p>\n

        \u547d\u4e2d\u7387 =<\/span> (<\/span>Innodb_buffer_pool_read_requests –<\/span> Innodb_buffer_pool_reads)<\/span> \/<\/span> Innodb_buffer_pool_read_requests *<\/span> 100<\/span>%<\/span><\/p>\n

        \u5982\u679c \u547d\u4e2d\u7387 < 95%，\u8bf4\u660e\u7f13\u51b2\u6c60\u8f83\u5c0f，\u53ef\u4ee5\u9002\u5f53\u589e\u5927 innodb_buffer_pool_size\u3002<\/p>\n

        \n

        3.2 \u76d1\u63a7\u7f13\u51b2\u6c60\u4f7f\u7528\u7387<\/h3>\n

        SHOW<\/span> GLOBAL<\/span> STATUS<\/span> LIKE<\/span> 'Innodb_buffer_pool_pages%'<\/span>;<\/span><\/p>\n

        \u793a\u4f8b\u8f93\u51fa：<\/p>\n

        +———————————-+——–+
        \n|<\/span> Variable_name |<\/span> Value |<\/span>
        \n+———————————-+——–+
        \n|<\/span> Innodb_buffer_pool_pages_total |<\/span> 8192<\/span> |<\/span> — \u603b\u9875\u6570
        \n|<\/span> Innodb_buffer_pool_pages_free |<\/span> 500<\/span> |<\/span> — \u7a7a\u95f2\u9875
        \n|<\/span> Innodb_buffer_pool_pages_data |<\/span> 7692<\/span> |<\/span> — \u5df2\u4f7f\u7528\u9875
        \n+———————————-+——–+<\/p>\n

        📌 \u8ba1\u7b97\u4f7f\u7528\u7387：<\/p>\n

        \u4f7f\u7528\u7387 =<\/span> (<\/span>Innodb_buffer_pool_pages_total –<\/span> Innodb_buffer_pool_pages_free)<\/span> \/<\/span> Innodb_buffer_pool_pages_total *<\/span> 100<\/span>%<\/span><\/p>\n

        \u5982\u679c \u4f7f\u7528\u7387 > 90% \u4e14 \u7f13\u51b2\u6c60\u547d\u4e2d\u7387\u8f83\u4f4e，\u8bf4\u660e\u7f13\u51b2\u6c60\u53ef\u80fd\u8fc7\u5c0f，\u9700\u8981\u8c03\u5927 innodb_buffer_pool_size\u3002<\/p>\n

        \n

        4. \u8fdb\u9636\u4f18\u5316：\u7f13\u51b2\u6c60\u5206\u533a（innodb_buffer_pool_instances）<\/h2>\n

        4.1 \u4ec0\u4e48\u662f innodb_buffer_pool_instances？<\/h3>\n

        \u5f53 innodb_buffer_pool_size \u8f83\u5927（\u8d85\u8fc7 1GB） \u65f6，\u5355\u4e2a\u7f13\u51b2\u6c60\u53ef\u80fd\u6210\u4e3a\u6027\u80fd\u74f6\u9888\u3002\u53ef\u4ee5\u5c06\u5176\u62c6\u5206\u4e3a\u591a\u4e2a\u5b9e\u4f8b，\u63d0\u9ad8\u5e76\u53d1\u67e5\u8be2\u80fd\u529b\u3002<\/p>\n

        4.2 \u8c03\u4f18\u7b56\u7565<\/h3>\n\n\u7f13\u51b2\u6c60\u5927\u5c0f (innodb_buffer_pool_size)\u63a8\u8350 innodb_buffer_pool_instances<\/tr>\n\n\n\n\n
        < 1GB<\/td>\n1（\u9ed8\u8ba4）<\/td>\n<\/tr>\n
        1GB – 8GB<\/td>\n2 – 4<\/td>\n<\/tr>\n
        > 8GB<\/td>\n8 – 16<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        4.3 \u8c03\u6574 innodb_buffer_pool_instances<\/h3>\n

        \u7f16\u8f91 my.cnf：<\/p>\n

        [<\/span>mysqld]<\/span>
        \ninnodb_buffer_pool_size =<\/span> 16G
        \ninnodb_buffer_pool_instances =<\/span> 8<\/span><\/p>\n

        📌 \u6548\u679c：<\/p>\n

          \n
        • \u51cf\u5c11\u9501\u7ade\u4e89，\u63d0\u9ad8\u5e76\u53d1\u6027\u80fd\u3002<\/li>\n
        • \u9002\u7528\u4e8e\u5927\u5185\u5b58\u670d\u52a1\u5668（>8GB），\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002<\/li>\n<\/ul>\n
          \n

          5. \u7ed3\u8bba<\/h2>\n

          \u2705 innodb_buffer_pool_size \u662f MySQL \u6027\u80fd\u4f18\u5316\u7684\u5173\u952e\u53c2\u6570，\u5e94\u6839\u636e \u670d\u52a1\u5668\u5185\u5b58\u5927\u5c0f \u8fdb\u884c\u8c03\u6574\u3002<\/p>\n

          \u2705 \u76d1\u63a7\u7f13\u51b2\u6c60\u547d\u4e2d\u7387（\u5e94\u5927\u4e8e 95%），\u4f4e\u4e8e 95% \u8bf4\u660e innodb_buffer_pool_size \u8fc7\u5c0f\u3002<\/p>\n

          \u2705 \u4f7f\u7528 innodb_buffer_pool_instances \u5206\u533a\u7f13\u51b2\u6c60，\u63d0\u9ad8\u5e76\u53d1\u67e5\u8be2\u80fd\u529b（\u9002\u7528\u4e8e >8GB）\u3002<\/p>\n

          \u2705 \u7f13\u51b2\u6c60\u8c03\u6574\u9700\u7ed3\u5408\u5b9e\u9645\u4e1a\u52a1，\u9010\u6b65\u8c03\u4f18，\u907f\u514d\u5f71\u54cd\u7cfb\u7edf\u7a33\u5b9a\u6027\u3002<\/p>\n

          **\u5408\u7406\u4f18\u5316 innodb_buffer_pool_size，\u8ba9 MySQL \u8fd0\u884c\u66f4\u5feb\u3001\u66f4\u7a33\u5b9a！**🚀<\/p>\n

          \n

          📌 \u6709\u4ec0\u4e48\u95ee\u9898\u548c\u7ecf\u9a8c\u60f3\u5206\u4eab？\u6b22\u8fce\u5728\u8bc4\u8bba\u533a\u4ea4\u6d41\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u5173\u6ce8！ 🎯<\/p>\n","protected":false},"excerpt":{"rendered":"

          \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1.1k\u6b21\uff0c\u70b9\u8d5e31\u6b21\uff0c\u6536\u85cf24\u6b21\u3002\u5728 MySQL **InnoDB \u5b58\u50a8\u5f15\u64ce** \u4e2d\uff0c`innodb_buffer_pool_size` \u662f\u5f71\u54cd **\u6570\u636e\u5e93\u6027\u80fd** \u7684**\u6700\u91cd\u8981\u7684\u53c2\u6570\u4e4b\u4e00**\u3002\u5b83\u51b3\u5b9a\u4e86 **InnoDB \u7f13\u51b2\u6c60\u7684\u5927\u5c0f**\uff0c\u76f4\u63a5\u5f71\u54cd **\u6570\u636e\u548c\u7d22\u5f15\u7684\u7f13\u5b58\u80fd\u529b**\uff0c\u4ece\u800c\u63d0\u5347 **\u67e5\u8be2\u6027\u80fd** \u5e76\u51cf\u5c11 **\u78c1\u76d8 I\/O**\u3002\u5982\u679c `innodb_buffer_pool_size` \u8fc7\u5c0f\uff0cMySQL **\u9891\u7e41\u4ece\u78c1\u76d8\u8bfb\u53d6\u6570\u636e**\uff0c\u67e5\u8be2\u53d8\u6162\uff1b\u5982\u679c**\u5408\u7406\u8c03\u4f18**\uff0c\u5927\u90e8\u5206\u67e5\u8be2\u53ef\u4ee5\u76f4\u63a5\u4ece\u5185\u5b58\u4e2d\u8bfb\u53d6\uff0c\u63d0\u9ad8\u6570\u636e\u5e93\u541e\u5410\u91cf\u3002_innodb \u7f13\u51b2\u6c60<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[114,242,100,43],"topic":[],"class_list":{"0":"post-15948","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-server","7":"tag-mysql","9":"tag-100","10":"tag-43"},"yoast_head":"\nMySQL \u670d\u52a1\u5668\u53c2\u6570\u8c03\u4f18\uff1aInnoDB \u7f13\u51b2\u6c60 - 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