{"id":23826,"date":"2025-01-09T22:58:30","date_gmt":"2025-01-09T14:58:30","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=23826"},"modified":"2025-01-09T22:58:30","modified_gmt":"2025-01-09T14:58:30","slug":"%e5%ba%94%e7%94%a8%e6%95%85%e9%9a%9c%e5%ae%9a%e4%bd%8d%e4%b8%ad%e5%a6%82%e4%bd%95%e5%a4%84%e7%90%86%e7%a3%81%e7%9b%98i%ef%bc%8fo%e9%97%ae%e9%a2%98%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/23826.html","title":{"rendered":"\u5e94\u7528\u6545\u969c\u5b9a\u4f4d\u4e2d\u5982\u4f55\u5904\u7406\u78c1\u76d8I\uff0fO\u95ee\u9898\uff1f"},"content":{"rendered":"

\t\t\t\t\n\n

\"\u5e94\u7528\u6545\u969c\u5b9a\u4f4d\u4e2d\u5982\u4f55\u5904\u7406\u78c1\u76d8I\uff0fO\u95ee\u9898\uff1f\"<\/p>\n\n<\/p>\n\n\n\n

\u5728\u73b0\u4ee3\u5e94\u7528\u7cfb\u7edf\u4e2d\uff0c\u78c1\u76d8I\/O\u95ee\u9898\u5f80\u5f80\u662f\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u751a\u81f3\u7cfb\u7edf\u5d29\u6e83\u7684\u5e38\u89c1\u539f\u56e0\u4e4b\u4e00\u3002\u65e0\u8bba\u662f\u9ad8\u5e76\u53d1\u7684Web\u5e94\u7528\uff0c\u8fd8\u662f\u6570\u636e\u5bc6\u96c6\u578b\u7684\u5206\u6790\u7cfb\u7edf\uff0c\u78c1\u76d8I\/O\u7684\u6027\u80fd\u74f6\u9888\u90fd\u53ef\u80fd\u6210\u4e3a\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u548c\u4e1a\u52a1\u8fde\u7eed\u6027\u7684\u5173\u952e\u56e0\u7d20\u3002\u5982\u4f55\u5feb\u901f\u3001\u51c6\u786e\u5730\u5b9a\u4f4d\u5e76\u89e3\u51b3\u78c1\u76d8I\/O\u95ee\u9898\uff0c\u662f\u6bcf\u4e00\u4f4d\u8fd0\u7ef4\u5de5\u7a0b\u5e08\u548c\u5f00\u53d1\u8005\u7684\u5fc5\u4fee\u8bfe<\/strong>\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u5728\u5e94\u7528\u6545\u969c\u5b9a\u4f4d\u4e2d\uff0c\u5982\u4f55\u9ad8\u6548\u5904\u7406\u78c1\u76d8I\/O\u95ee\u9898\uff0c\u5e76\u63d0\u4f9b\u5b9e\u7528\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n\n\n\n\n

\u4e00\u3001\u78c1\u76d8I\/O\u95ee\u9898\u7684\u5e38\u89c1\u8868\u73b0<\/h3>\n\n\n\n\n

\u5728\u5f00\u59cb\u89e3\u51b3\u95ee\u9898\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u660e\u786e\u78c1\u76d8I\/O\u95ee\u9898\u7684\u5178\u578b\u8868\u73b0\u3002\u5e38\u89c1\u7684\u75c7\u72b6\u5305\u62ec<\/strong>\uff1a<\/p>\n\n\n\n\n

    \n\n\n
  1. \u5e94\u7528\u54cd\u5e94\u65f6\u95f4\u53d8\u6162<\/strong>\uff1a\u7528\u6237\u8bf7\u6c42\u7684\u5904\u7406\u65f6\u95f4\u660e\u663e\u589e\u52a0\uff0c\u751a\u81f3\u51fa\u73b0\u8d85\u65f6\u3002<\/li>\n\n\n\n\n
  2. \u7cfb\u7edf\u8d1f\u8f7d\u8fc7\u9ad8<\/strong>\uff1aCPU\u4f7f\u7528\u7387\u6b63\u5e38\uff0c\u4f46\u7cfb\u7edf\u8d1f\u8f7d\uff08Load Average\uff09\u6301\u7eed\u5347\u9ad8\u3002<\/li>\n\n\n\n\n
  3. \u78c1\u76d8\u5229\u7528\u7387\u98d9\u5347<\/strong>\uff1a\u901a\u8fc7\u76d1\u63a7\u5de5\u5177\u53d1\u73b0\u78c1\u76d8\u7684\u8bfb\u5199\u64cd\u4f5c\u9891\u7e41\uff0c\u5229\u7528\u7387\u63a5\u8fd1100%\u3002<\/li>\n\n\n\n\n
  4. \u65e5\u5fd7\u62a5\u9519<\/strong>\uff1a\u5e94\u7528\u65e5\u5fd7\u4e2d\u51fa\u73b0\u4e0e\u78c1\u76d8\u76f8\u5173\u7684\u9519\u8bef\uff0c\u5982\u201c\u78c1\u76d8\u7a7a\u95f4\u4e0d\u8db3\u201d\u6216\u201cI\/O\u8d85\u65f6\u201d\u3002<\/li>\n\n\n<\/ol>\n\n\n\n\n

    \u8fd9\u4e9b\u8868\u73b0\u53ef\u80fd\u662f\u78c1\u76d8I\/O\u95ee\u9898\u7684\u76f4\u63a5\u4fe1\u53f7\uff0c\u4f46\u4e5f\u53ef\u80fd\u662f\u5176\u4ed6\u95ee\u9898\u7684\u95f4\u63a5\u53cd\u6620\u3002\u56e0\u6b64\uff0c\u7cbe\u51c6\u5b9a\u4f4d\u95ee\u9898\u7684\u6839\u6e90\u81f3\u5173\u91cd\u8981<\/strong>\u3002<\/p>\n\n\n\n\n

    \u4e8c\u3001\u78c1\u76d8I\/O\u95ee\u9898\u7684\u5b9a\u4f4d\u65b9\u6cd5<\/h3>\n\n\n\n\n

    1. \u76d1\u63a7\u5de5\u5177\u7684\u4f7f\u7528<\/strong><\/h4>\n\n\n\n\n

    \u76d1\u63a7\u5de5\u5177\u662f\u5b9a\u4f4d\u78c1\u76d8I\/O\u95ee\u9898\u7684\u7b2c\u4e00\u9053\u9632\u7ebf\u3002\u5e38\u7528\u7684\u5de5\u5177\u5305\u62ec\uff1a<\/p>\n\n\n\n\n

      \n\n\n
    • iostat<\/strong>\uff1a\u53ef\u4ee5\u5b9e\u65f6\u76d1\u63a7\u78c1\u76d8\u7684\u8bfb\u5199\u901f\u7387\u3001I\/O\u7b49\u5f85\u65f6\u95f4\u7b49\u5173\u952e\u6307\u6807\u3002<\/li>\n\n\n\n\n
    • vmstat<\/strong>\uff1a\u63d0\u4f9b\u7cfb\u7edf\u6574\u4f53\u7684I\/O\u6027\u80fd\u6982\u89c8\uff0c\u5305\u62ec\u78c1\u76d8\u548c\u5185\u5b58\u7684\u4f7f\u7528\u60c5\u51b5\u3002<\/li>\n\n\n\n\n
    • dstat<\/strong>\uff1a\u7ed3\u5408\u4e86\u591a\u79cd\u76d1\u63a7\u5de5\u5177\u7684\u529f\u80fd\uff0c\u80fd\u591f\u66f4\u5168\u9762\u5730\u5c55\u793a\u7cfb\u7edf\u72b6\u6001\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

      \u901a\u8fc7\u8fd9\u4e9b\u5de5\u5177\uff0c\u53ef\u4ee5\u5feb\u901f\u5224\u65ad\u662f\u5426\u5b58\u5728\u78c1\u76d8I\/O\u74f6\u9888\u3002\u4f8b\u5982\uff0c\u5982\u679ciostat<\/strong>\u663e\u793a\u78c1\u76d8\u7684\u0543*\uff08\u5229\u7528\u7387\uff09\u6301\u7eed\u9ad8\u4e8e80%\uff0c\u5219\u8868\u660e\u78c1\u76d8\u53ef\u80fd\u6210\u4e3a\u6027\u80fd\u74f6\u9888\u3002<\/p>\n\n\n\n\n

      2. \u5206\u6790I\/O\u6a21\u5f0f<\/strong><\/h4>\n\n\n\n\n

      \u78c1\u76d8I\/O\u95ee\u9898\u7684\u6839\u6e90\u5f80\u5f80\u4e0e\u5e94\u7528\u7684I\/O\u6a21\u5f0f\u5bc6\u5207\u76f8\u5173\u3002\u5e38\u89c1\u7684I\/O\u6a21\u5f0f\u5305\u62ec<\/strong>\uff1a<\/p>\n\n\n\n\n

        \n\n\n
      • \u987a\u5e8f\u8bfb\u5199<\/strong>\uff1a\u901a\u5e38\u51fa\u73b0\u5728\u65e5\u5fd7\u5199\u5165\u6216\u5927\u6570\u636e\u6279\u5904\u7406\u573a\u666f\u4e2d\u3002<\/li>\n\n\n\n\n
      • \u968f\u673a\u8bfb\u5199<\/strong>\uff1a\u5e38\u89c1\u4e8e\u6570\u636e\u5e93\u64cd\u4f5c\u6216\u6587\u4ef6\u7cfb\u7edf\u7684\u5c0f\u6587\u4ef6\u8bfb\u5199\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

        \u901a\u8fc7\u5206\u6790I\/O\u6a21\u5f0f\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u95ee\u9898\u7684\u672c\u8d28\u3002\u4f8b\u5982\uff0c\u968f\u673a\u8bfb\u5199<\/strong>\u901a\u5e38\u4f1a\u5bfc\u81f4\u66f4\u9ad8\u7684\u78c1\u76d8\u5bfb\u9053\u65f6\u95f4\uff0c\u4ece\u800c\u964d\u4f4e\u6574\u4f53\u6027\u80fd\u3002<\/p>\n\n\n\n\n

        3. \u68c0\u67e5\u6587\u4ef6\u7cfb\u7edf\u548c\u78c1\u76d8\u914d\u7f6e<\/strong><\/h4>\n\n\n\n\n

        \u6587\u4ef6\u7cfb\u7edf\u548c\u78c1\u76d8\u7684\u914d\u7f6e\u4e5f\u53ef\u80fd\u5f71\u54cdI\/O\u6027\u80fd\u3002\u9700\u8981\u5173\u6ce8\u7684\u70b9\u5305\u62ec<\/strong>\uff1a<\/p>\n\n\n\n\n

          \n\n\n
        • \u6587\u4ef6\u7cfb\u7edf\u7c7b\u578b<\/strong>\uff1a\u4e0d\u540c\u7684\u6587\u4ef6\u7cfb\u7edf\uff08\u5982ext4\u3001XFS\uff09\u5bf9I\/O\u6027\u80fd\u7684\u5f71\u54cd\u4e0d\u540c\u3002<\/li>\n\n\n\n\n
        • \u78c1\u76d8\u5206\u533a\u5bf9\u9f50<\/strong>\uff1a\u5206\u533a\u672a\u5bf9\u9f50\u53ef\u80fd\u5bfc\u81f4\u989d\u5916\u7684I\/O\u5f00\u9500\u3002<\/li>\n\n\n\n\n
        • RAID\u914d\u7f6e<\/strong>\uff1aRAID\u7ea7\u522b\uff08\u5982RAID 0\u3001RAID 5\uff09\u7684\u9009\u62e9\u4f1a\u76f4\u63a5\u5f71\u54cd\u78c1\u76d8\u7684\u8bfb\u5199\u6027\u80fd\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

          \u901a\u8fc7\u4f18\u5316\u8fd9\u4e9b\u914d\u7f6e\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u5347\u78c1\u76d8I\/O\u6027\u80fd\u3002<\/p>\n\n\n\n\n

          \u4e09\u3001\u78c1\u76d8I\/O\u95ee\u9898\u7684\u89e3\u51b3\u65b9\u6848<\/h3>\n\n\n\n\n

          1. \u4f18\u5316\u5e94\u7528\u4ee3\u7801<\/strong><\/h4>\n\n\n\n\n

          \u5e94\u7528\u4ee3\u7801\u7684\u8bbe\u8ba1\u548c\u5b9e\u73b0\u65b9\u5f0f\u5bf9\u78c1\u76d8I\/O\u6027\u80fd\u6709\u7740\u76f4\u63a5\u5f71\u54cd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f18\u5316\u5efa\u8bae<\/strong>\uff1a<\/p>\n\n\n\n\n

            \n\n\n
          • \u51cf\u5c11\u4e0d\u5fc5\u8981\u7684I\/O\u64cd\u4f5c<\/strong>\uff1a\u4f8b\u5982\uff0c\u907f\u514d\u9891\u7e41\u7684\u5c0f\u6587\u4ef6\u8bfb\u5199\uff0c\u5c3d\u91cf\u4f7f\u7528\u6279\u91cf\u64cd\u4f5c\u3002<\/li>\n\n\n\n\n
          • \u4f7f\u7528\u7f13\u5b58<\/strong>\uff1a\u5c06\u9891\u7e41\u8bbf\u95ee\u7684\u6570\u636e\u7f13\u5b58\u5728\u5185\u5b58\u4e2d\uff0c\u51cf\u5c11\u5bf9\u78c1\u76d8\u7684\u76f4\u63a5\u8bbf\u95ee\u3002<\/li>\n\n\n\n\n
          • \u5f02\u6b65I\/O<\/strong>\uff1a\u901a\u8fc7\u5f02\u6b65I\/O\u64cd\u4f5c\uff0c\u907f\u514d\u963b\u585e\u4e3b\u7ebf\u7a0b\uff0c\u63d0\u5347\u5e94\u7528\u7684\u54cd\u5e94\u901f\u5ea6\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

            2. \u8c03\u6574\u7cfb\u7edf\u53c2\u6570<\/strong><\/h4>\n\n\n\n\n

            \u7cfb\u7edf\u53c2\u6570\u7684\u8c03\u6574\u53ef\u4ee5\u663e\u8457\u6539\u5584\u78c1\u76d8I\/O\u6027\u80fd\u3002\u5e38\u89c1\u7684\u4f18\u5316\u63aa\u65bd\u5305\u62ec<\/strong>\uff1a<\/p>\n\n\n\n\n

              \n\n\n
            • \u8c03\u6574I\/O\u8c03\u5ea6\u5668<\/strong>\uff1aLinux\u7cfb\u7edf\u63d0\u4f9b\u4e86\u591a\u79cdI\/O\u8c03\u5ea6\u5668\uff08\u5982CFQ\u3001NOOP\u3001Deadline\uff09\uff0c\u6839\u636e\u5e94\u7528\u573a\u666f\u9009\u62e9\u5408\u9002\u7684\u8c03\u5ea6\u5668\u3002<\/li>\n\n\n\n\n
            • \u4f18\u5316\u6587\u4ef6\u7cfb\u7edf\u6302\u8f7d\u9009\u9879<\/strong>\uff1a\u4f8b\u5982\uff0c\u4f7f\u7528noatime<\/code>\u9009\u9879\u51cf\u5c11\u6587\u4ef6\u8bbf\u95ee\u65f6\u95f4\u7684\u66f4\u65b0\u5f00\u9500\u3002<\/li>\n\n\n\n\n
            • \u589e\u52a0\u78c1\u76d8\u961f\u5217\u6df1\u5ea6<\/strong>\uff1a\u901a\u8fc7\u8c03\u6574nr_requests<\/code>\u53c2\u6570\uff0c\u63d0\u5347\u78c1\u76d8\u7684\u5e76\u53d1\u5904\u7406\u80fd\u529b\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

              3. \u5347\u7ea7\u786c\u4ef6\u8bbe\u5907<\/strong><\/h4>\n\n\n\n\n

              \u5982\u679c\u8f6f\u4ef6\u4f18\u5316\u65e0\u6cd5\u6ee1\u8db3\u9700\u6c42\uff0c\u5347\u7ea7\u786c\u4ef6\u8bbe\u5907\u53ef\u80fd\u662f\u6700\u7ec8\u7684\u89e3\u51b3\u65b9\u6848\u3002\u53ef\u4ee5\u8003\u8651\u4ee5\u4e0b\u786c\u4ef6\u5347\u7ea7\u65b9\u6848<\/strong>\uff1a<\/p>\n\n\n\n\n

                \n\n\n
              • \u4f7f\u7528SSD\u66ff\u4ee3HDD<\/strong>\uff1aSSD\u7684\u968f\u673a\u8bfb\u5199\u6027\u80fd\u8fdc\u9ad8\u4e8e\u4f20\u7edfHDD\uff0c\u9002\u5408I\/O\u5bc6\u96c6\u578b\u5e94\u7528\u3002<\/li>\n\n\n\n\n
              • \u589e\u52a0\u78c1\u76d8\u6570\u91cf<\/strong>\uff1a\u901a\u8fc7RAID\u6216\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\uff0c\u63d0\u5347\u78c1\u76d8\u7684\u541e\u5410\u80fd\u529b\u3002<\/li>\n\n\n\n\n
              • \u4f18\u5316\u7f51\u7edc\u5b58\u50a8<\/strong>\uff1a\u5982\u679c\u4f7f\u7528\u7f51\u7edc\u5b58\u50a8\uff08\u5982NFS\u3001iSCSI\uff09\uff0c\u786e\u4fdd\u7f51\u7edc\u5e26\u5bbd\u548c\u5ef6\u8fdf\u6ee1\u8db3\u9700\u6c42\u3002<\/li>\n\n\n<\/ul>\n\n\n\n\n

                \u56db\u3001\u6848\u4f8b\u5206\u6790\uff1a\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\u7684\u78c1\u76d8I\/O\u4f18\u5316<\/h3>\n\n\n\n\n

                \u4ee5\u4e00\u4e2a\u9ad8\u5e76\u53d1\u7684Web\u5e94\u7528\u4e3a\u4f8b\uff0c\u7528\u6237\u53cd\u9988\u7cfb\u7edf\u54cd\u5e94\u65f6\u95f4\u53d8\u6162\u3002\u901a\u8fc7\u76d1\u63a7\u5de5\u5177\u53d1\u73b0\uff0c\u78c1\u76d8\u7684\u0543*\u6301\u7eed\u9ad8\u4e8e90%\uff0c\u4e14I\/O\u7b49\u5f85\u65f6\u95f4\u663e\u8457\u589e\u52a0\u3002\u8fdb\u4e00\u6b65\u5206\u6790\u53d1\u73b0\uff0c\u5e94\u7528\u7684\u65e5\u5fd7\u6a21\u5757\u91c7\u7528\u4e86\u540c\u6b65\u5199\u5165\u65b9\u5f0f\uff0c\u5bfc\u81f4\u5927\u91cfI\/O\u64cd\u4f5c\u963b\u585e\u4e86\u4e3b\u7ebf\u7a0b\u3002<\/p>\n\n\n\n\n

                \u89e3\u51b3\u65b9\u6848<\/strong>\uff1a<\/p>\n\n\n\n\n

                  \n\n\n
                1. \u5c06\u65e5\u5fd7\u5199\u5165\u6539\u4e3a\u5f02\u6b65\u65b9\u5f0f<\/strong>\uff0c\u51cf\u5c11\u5bf9\u4e3b\u7ebf\u7a0b\u7684\u5f71\u54cd\u3002<\/li>\n\n\n\n\n
                2. \u4f7f\u7528\u65e5\u5fd7\u7f13\u51b2<\/strong>\uff0c\u5c06\u591a\u6761\u65e5\u5fd7\u5408\u5e76\u5199\u5165\uff0c\u51cf\u5c11\u78c1\u76d8I\/O\u6b21\u6570\u3002<\/li>\n\n\n\n\n
                3. \u8c03\u6574I\/O\u8c03\u5ea6\u5668\u4e3aDeadline<\/strong>\uff0c\u4f18\u5316\u78c1\u76d8\u7684\u54cd\u5e94\u65f6\u95f4\u3002<\/li>\n\n\n<\/ol>\n\n\n\n\n

                  \u7ecf\u8fc7\u4e0a\u8ff0\u4f18\u5316\uff0c\u7cfb\u7edf\u7684\u78c1\u76d8I\/O\u5229\u7528\u7387\u964d\u81f3\u5408\u7406\u8303\u56f4\uff0c\u54cd\u5e94\u65f6\u95f4\u663e\u8457\u6539\u5584\u3002<\/p>\n\n\n\n\n

                  \u4e94\u3001\u9884\u9632\u78c1\u76d8I\/O\u95ee\u9898\u7684\u5efa\u8bae<\/h3>\n\n\n\n\n

                  \u9664\u4e86\u89e3\u51b3\u95ee\u9898\uff0c\u9884\u9632\u78c1\u76d8I\/O\u95ee\u9898\u7684\u53d1\u751f\u540c\u6837\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u9884\u9632\u63aa\u65bd<\/strong>\uff1a<\/p>\n\n\n\n\n

                    \n\n\n
                  1. \u5b9a\u671f\u76d1\u63a7\u78c1\u76d8\u6027\u80fd<\/strong>\uff1a\u901a\u8fc7\u81ea\u52a8\u5316\u76d1\u63a7\u5de5\u5177\uff0c\u53ca\u65f6\u53d1\u73b0\u6f5c\u5728\u95ee\u9898\u3002<\/li>\n\n\n\n\n
                  2. \u4f18\u5316\u6570\u636e\u5b58\u50a8\u7b56\u7565<\/strong>\uff1a\u6839\u636e\u6570\u636e\u8bbf\u95ee\u6a21\u5f0f\uff0c\u5408\u7406\u8bbe\u8ba1\u5b58\u50a8\u67b6\u6784\u3002<\/li>\n\n\n\n\n
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                    \u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u964d\u4f4e\u78c1\u76d8I\/O\u95ee\u9898\u5bf9\u5e94\u7528\u7cfb\u7edf\u7684\u5f71\u54cd\uff0c\u786e\u4fdd\u4e1a\u52a1\u7684\u7a33\u5b9a\u8fd0\u884c\u3002<\/p>\n\n\n ]]>\t\t<\/p>\n","protected":false},"excerpt":{"rendered":"

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