{"id":201829,"date":"2025-05-10T11:43:17","date_gmt":"2025-05-10T03:43:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201829\/"},"modified":"2025-05-10T11:43:17","modified_gmt":"2025-05-10T03:43:17","slug":"%e8%af%a6%e8%a7%a3%e5%a6%82%e4%bd%95%e6%b8%85%e7%90%86redis%e5%86%85%e5%ad%98%e7%a2%8e%e7%89%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201829\/","title":{"rendered":"\u8be6\u89e3\u5982\u4f55\u6e05\u7406Redis\u5185\u5b58\u788e\u7247"},"content":{"rendered":"

<\/b> <\/p>\n

\u8be6\u89e3\u5982\u4f55\u6e05\u7406Redis\u5185\u5b58\u788e\u7247<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5927\u5bb6\u597d\uff0c\u4eca\u5929\u672c\u4eba\u7ed9\u5927\u5bb6\u5e26\u6765\u6587\u7ae0\u300a\u8be6\u89e3\u5982\u4f55\u6e05\u7406Redis\u5185\u5b58\u788e\u7247\u300b<\/span>\uff0c\u6587\u4e2d\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230redis\u5185\u5b58\u3001\u788e\u7247<\/span><\/span>\uff0c\u5982\u679c\u4f60\u5bf9\u6570\u636e\u5e93<\/span>\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u90a3\u5c31\u8bf7\u5404\u4f4d\u670b\u53cb\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427~\u5e0c\u671b\u80fd\u771f\u6b63\u5e2e\u5230\u4f60\u4eec\uff0c\u8c22\u8c22\uff01<\/p>\n

\u660e\u660e\u505a\u4e86\u6570\u636e\u5220\u9664\uff0c\u6570\u636e\u91cf\u5df2\u7ecf\u4e0d\u5927\u4e86\uff0c\u4e3a\u4ec0\u4e48\u4f7f\u7528 top \u547d\u4ee4\u67e5\u770b\u65f6\uff0c\u8fd8\u4f1a\u53d1\u73b0 Redis \u5360\u7528\u4e86\u5f88\u591a\u5185\u5b58\u5462\uff1f
\u5b9e\u9645\u4e0a\uff0c\u8fd9\u662f\u56e0\u4e3a\uff0c\u5f53\u6570\u636e\u5220\u9664\u540e\uff0cRedis \u91ca\u653e\u7684\u5185\u5b58\u7a7a\u95f4\u4f1a\u7531\u5185\u5b58\u5206\u914d\u5668\u7ba1\u7406\uff0c\u5e76\u4e0d\u4f1a\u7acb\u5373\u8fd4\u56de\u7ed9\u64cd\u4f5c\u7cfb\u7edf\u3002<\/p>\n

Redis \u91ca\u653e\u7684\u5185\u5b58\u7a7a\u95f4\u53ef\u80fd\u5e76\u4e0d\u662f\u8fde\u7eed\u7684\uff0c\u90a3\u4e48\uff0c\u8fd9\u4e9b\u4e0d\u8fde\u7eed\u7684\u5185\u5b58\u7a7a\u95f4\u5f88\u6709\u53ef\u80fd\u5904\u4e8e\u4e00\u79cd\u95f2\u7f6e\u7684\u72b6\u6001\u3002\u8fd9\u5c31\u4f1a\u5bfc\u81f4\u4e00\u4e2a\u95ee\u9898\uff1a\u867d\u7136\u6709\u7a7a\u95f2\u7a7a\u95f4\uff0cRedis \u5374\u65e0\u6cd5\u7528\u6765\u4fdd\u5b58\u6570\u636e\uff0c\u4e0d\u4ec5\u4f1a\u51cf\u5c11 Redis \u80fd\u591f\u5b9e\u9645\u4fdd\u5b58\u7684\u6570\u636e\u91cf\uff0c\u8fd8\u4f1a\u964d\u4f4e Redis \u8fd0\u884c\u673a\u5668\u7684\u6210\u672c\u56de\u62a5\u7387\u3002<\/p>\n

\u4ec0\u4e48\u662fRedis\u5185\u5b58\u788e\u7247\uff1f<\/h2>\n

\u64cd\u4f5c\u7cfb\u7edf\u7684\u5269\u4f59\u7a7a\u95f4\u603b\u91cf\u8db3\u591f\uff0c\u4f46\u7533\u8bf7\u4e00\u5757N\u5b57\u8282\u8fde\u7eed\u5730\u5740\u7684\u7a7a\u95f4\u65f6\uff0c\u5269\u4f59\u5185\u5b58\u7a7a\u95f4\u4e2d\u6ca1\u6709\u5927\u5c0f\u4e3aN\u5b57\u8282\u7684\u8fde\u7eed\u7a7a\u95f4\uff0c\u90a3\u4e48\u8fd9\u4e9b\u5269\u4f59\u5185\u5b58\u7a7a\u95f4\u4e2d\uff0c\u5c0f\u4e8eN\u5b57\u8282\u7684\u8fde\u7eed\u5185\u5b58\u7a7a\u95f4\u5c31\u662f\u5185\u5b58\u788e\u7247\u3002<\/p>\n

Redis\u5185\u5b58\u788e\u7247\u662f\u5982\u4f55\u5f62\u6210\u7684\uff1f<\/h2>\n

\u5185\u5b58\u788e\u7247\u5f62\u6210\u6709\u5185\u90e8\u539f\u56e0\u548c\u5916\u90e8\u539f\u56e0\uff1a<\/p>\n

    \n
  • \u5185\u90e8\u539f\u56e0\uff1a\u5185\u5b58\u5206\u914d\u5668\u7684\u5206\u914d\u7b56\u7565\u51b3\u5b9a\u64cd\u4f5c\u7cfb\u7edf\u65e0\u6cd5\u505a\u5230\u201c\u6309\u9700\u5206\u914d\u201d\u3002\n
      \n
    • Redis\u4f7f\u7528libc\u3001jemalloc\u3001tcmalloc\u591a\u79cd\u5185\u5b58\u5206\u914d\u5668\u6765\u5206\u914d\u5185\u5b58\uff0c\u9ed8\u8ba4\u4f7f\u7528jemalloc\u3002<\/li>\n
    • \u5185\u5b58\u5206\u914d\u5668\u662f\u6309\u7167\u56fa\u5b9a\u5927\u5c0f\u6765\u5206\u914d\u5185\u5b58\u7a7a\u95f4\uff0c\u4e0d\u662f\u5b8c\u5168\u6309\u7167\u5e94\u7528\u7a0b\u5e8f\u7533\u8bf7\u7684\u5185\u5b58\u5927\u5c0f\u6765\u5206\u914d\u3002<\/li>\n
    • \u4ee5jemalloc\u4e3a\u4f8b\uff0c\u662f\u6309\u7167\u4e00\u7cfb\u5217\u56fa\u5b9a\u7684\u5927\u5c0f\u5212\u5206\u5185\u5b58\u7a7a\u95f4\uff0c\u4f8b\u59828\u5b57\u8282\u300116\u5b57\u8282\u300132\u5b57\u8282\u3001…\u30012KB\u30014KB\u7b49\u3002\u5f53\u7a0b\u5e8f\u7533\u8bf7\u7684\u5185\u5b58\u6700\u63a5\u8fd1\u67d0\u4e2a\u56fa\u5b9a\u503c\u65f6\uff0cjemalloc\u5c31\u4f1a\u7ed9\u5b83\u5206\u914d\u76f8\u5e94\u5927\u5c0f\u7684\u7a7a\u95f4\u3002<\/li>\n<\/ul>\n<\/li>\n
    • \u5916\u90e8\u539f\u56e0\uff1a\u952e\u503c\u5bf9\u5927\u5c0f\u4e0d\u4e00\u6837\uff0c\u5e76\u4e14\u952e\u503c\u5bf9\u53ef\u4ee5\u88ab\u4fee\u6539\u548c\u5220\u9664\u3002\n
        \n
      • Redis\u7533\u8bf7\u5185\u5b58\u7a7a\u95f4\u5206\u914d\u65f6\uff0c\u5bf9\u4e8e\u5927\u5c0f\u4e0d\u4e00\u7684\u5185\u5b58\u7a7a\u95f4\u9700\u6c42\uff0c\u5185\u5b58\u5206\u914d\u5668\u6309\u7167\u56fa\u5b9a\u5927\u5c0f\u5206\u914d\u5185\u5b58\u7a7a\u95f4\uff0c\u5206\u914d\u7684\u5185\u5b58\u7a7a\u95f4\u4e00\u822c\u90fd\u4f1a\u6bd4\u7533\u8bf7\u7684\u5185\u5b58\u7a7a\u95f4\u5927\u4e00\u4e9b\uff0c\u8fd9\u4f1a\u4ea7\u751f\u4e00\u5b9a\u7684\u5185\u5b58\u788e\u7247\u3002<\/li>\n
      • \u952e\u503c\u5bf9\u4f1a\u88ab\u4fee\u6539\u548c\u5220\u9664\uff0c\u4f1a\u5bfc\u81f4\u7a7a\u95f4\u7684\u6269\u5bb9\u548c\u91ca\u653e\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

        \u5982\u4f55\u5224\u65adRedis\u662f\u5426\u6709\u5185\u5b58\u788e\u7247\uff1f<\/h2>\n

        DAS\u901a\u8fc7Redis\u63d0\u4f9b\u7684INFO\u547d\u4ee4\uff0c\u67e5\u8be2\u5185\u5b58\u4f7f\u7528\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n

        INFO memory\n# Memory\nused_memory:350458970752\nused_memory_human:326.39G\nused_memory_rss:349066919936\nused_memory_rss_human:325.09G\n\u2026\nmem_fragmentation_ratio:1.00<\/pre>\n
          \n
        • used_memory<\/strong>\uff1a\u8868\u793aRedis\u4e3a\u4e86\u4fdd\u5b58\u6570\u636e\u5b9e\u9645\u7533\u8bf7\u4f7f\u7528\u7684\u5185\u5b58\u7a7a\u95f4\u3002<\/li>\n
        • used_memory_rss<\/strong>\uff1a\u8868\u793a\u64cd\u4f5c\u7cfb\u7edf\u5b9e\u9645\u5206\u914d\u7ed9Redis\u7684\u7269\u7406\u5185\u5b58\u7a7a\u95f4\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u5185\u5b58\u7a7a\u95f4\u788e\u7247\u3002<\/li>\n
        •  mem_fragmentation_ratio\uff1a\u8868\u793aRedis\u5f53\u524d\u7684\u5185\u5b58\u788e\u7247\u7387\u3002\u8ba1\u7b97\u516c\u5f0f\uff1amem_fragmentation_ratio=used_memory_rss\/used_memory\n
            \n
          • mem_fragmentation_ratio\u5927\u4e8e\u7b49\u4e8e1\u4f46\u5c0f\u4e8e\u7b49\u4e8e1.5\uff0c\u8fd9\u79cd\u60c5\u51b5\u662f\u5408\u7406\u7684\u3002<\/li>\n
          • mem_fragmentation_ratio\u5927\u4e8e1.5\uff0c\u8868\u660e\u5185\u5b58\u788e\u7247\u7387\u5df2\u7ecf\u8d85\u8fc7\u4e8650%\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
            \u5982\u4f55\u6e05\u7406\u5185\u5b58\u788e\u7247\uff1f<\/h2>\n
            \u4e00\u4e2a\u201c\u7b80\u5355\u7c97\u66b4\u201d\u7684\u65b9\u6cd5\u662f\u91cd\u542fRedis\u5b9e\u4f8b\u3002\u4f46\u662f\u8fd9\u4e2a\u65b9\u6cd5\u4f1a\u5e26\u6765\u4e24\u4e2a\u540e\u679c\uff1a<\/p>\n
              \n
            • \u5982\u679cRedis\u4e2d\u7684\u6570\u636e\u6ca1\u6709\u6301\u4e45\u5316\uff0c\u6570\u636e\u4f1a\u4e22\u5931\uff1b<\/li>\n
            • \u5373\u4f7fRedis\u6570\u636e\u6301\u4e45\u5316\u4e86\uff0c\u8fd8\u9700\u8981\u901a\u8fc7AOF\u6216\u8005RDB\u6765\u6062\u590d\uff0c\u6062\u590d\u65f6\u957f\u53d6\u51b3\u4e8eAOF\u6216RDB\u7684\u5927\u5c0f\u3002\u5e76\u4e14\u5982\u679c\u53ea\u6709\u4e00\u4e2aRedis\u5b9e\u4f8b\uff0c\u6062\u590d\u9636\u6bb5\u65e0\u6cd5\u63d0\u4f9b\u670d\u52a1\u3002<\/li>\n<\/ul>\n
               \u90a3\u6709\u6ca1\u6709\u66f4\u597d\u7684\u65b9\u6cd5\u5462\uff1f\u6709\u7684\uff0c\u4ece4.0-RC3\u7248\u672c\u4ee5\u540e\uff0cRedis\u81ea\u8eab\u63d0\u4f9b\u4e86\u4e00\u79cd\u5185\u5b58\u788e\u7247\u81ea\u52a8\u6e05\u7406\u7684\u65b9\u6cd5\u3002<\/p>\n
              \u5185\u5b58\u788e\u7247\u81ea\u52a8\u6e05\u7406<\/h3>\n
              \u5185\u5b58\u788e\u7247\u6e05\u7406\uff0c\u7b80\u5355\u6765\u8bf4\uff0c\u5c31\u662f\u201c\u642c\u5bb6\u8ba9\u4f4d\uff0c\u5408\u5e76\u7a7a\u95f4\u201d\u3002<\/p>\n
              \u5f53\u6709\u6570\u636e\u628a\u4e00\u5757\u8fde\u7eed\u7684\u5185\u5b58\u7a7a\u95f4\u5206\u5272\u6210\u597d\u51e0\u5757\u4e0d\u8fde\u7eed\u7684\u7a7a\u95f4\u65f6\uff0c\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u628a\u6570\u636e\u62f7\u8d1d\u5230\u53e6\u5916\uff0c\u800c\u539f\u6765\u4e0d\u8fde\u7eed\u7684\u5185\u5b58\u7a7a\u95f4\u5c31\u53d8\u6210\u8fde\u7eed\u7684\u5185\u5b58\u7a7a\u95f4\u4e86\u3002<\/p>\n
              \u4f46\u662f\u788e\u7247\u6e05\u7406\u662f\u6709\u4ee3\u4ef7\u7684\u3002\u64cd\u4f5c\u7cfb\u7edf\u9700\u8981\u628a\u591a\u4efd\u6570\u636e\u62f7\u8d1d\u5230\u65b0\u4f4d\u7f6e\uff0c\u628a\u539f\u6709\u7a7a\u95f4\u91ca\u653e\u51fa\u6765\uff0c\u8fd9\u4f1a\u5e26\u6765\u65f6\u95f4\u5f00\u9500\u3002\u53e6\u5916\u5728\u6570\u636e\u62f7\u8d1d\u65f6\uff0c\u4f1a\u963b\u585eRedis\uff0c\u964d\u4f4e\u6027\u80fd\u3002<\/p>\n
              \u5982\u4f55\u7f13\u89e3\u8fd9\u4e2a\u95ee\u9898\uff1f<\/h3>\n
              Redis\u4e13\u95e8\u4e3a\u81ea\u52a8\u5185\u5b58\u788e\u7247\u6e05\u7406\u673a\u5236\u63d0\u4f9b\u53c2\u6570\u8bbe\u7f6e\u3002\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u53c2\u6570\uff0c\u6765\u63a7\u5236\u788e\u7247\u6e05\u7406\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u65f6\u673a\uff0c\u4ee5\u53ca\u5360\u7528\u7684CPU\u6bd4\u4f8b\uff0c\u4ece\u800c\u51cf\u5c11\u788e\u7247\u6e05\u7406\u5bf9Redis\u8bf7\u6c42\u5904\u7406\u7684\u6027\u80fd\u5f71\u54cd\u3002<\/p>\n
              \u9996\u5148\uff0c\u5f00\u542f\u81ea\u52a8\u5185\u5b58\u788e\u7247\u6e05\u7406\uff1a<\/p>\n
              config set activedefrag yes
              \u7136\u540e\uff0c\u8bbe\u7f6e\u89e6\u53d1\u5185\u5b58\u6e05\u7406\u7684\u6761\u4ef6\uff1a<\/p>\n
                \n
              • active-defrag-ignore-bytes 100mb\uff1a\u8868\u793a\u5185\u5b58\u788e\u7247\u7684\u5b57\u8282\u6570\u8fbe\u5230100MB\u65f6\uff0c\u5f00\u59cb\u6e05\u7406\uff1b<\/li>\n
              • active-defrag-threshold-lower 10\uff1a\u8868\u793a\u5185\u5b58\u788e\u7247\u7a7a\u95f4\u5360\u64cd\u4f5c\u7cfb\u7edf\u5206\u914d\u7ed9Redis\u7684\u603b\u7a7a\u95f4\u6bd4\u4f8b\u8fbe\u523010%\u65f6\uff0c\u5f00\u59cb\u6e05\u7406\u3002<\/li>\n<\/ul>\n
                \u6700\u540e\uff0c\u63a7\u5236\u6e05\u7406\u64cd\u4f5c\u5360\u7528CPU\u65f6\u95f4\u6bd4\u4f8b\u7684\u4e0a\u3001\u4e0b\u9650\uff1a<\/p>\n
                  \n
                • active-defrag-cycle-min 25\uff1a \u8868\u793a\u81ea\u52a8\u6e05\u7406\u8fc7\u7a0b\u6240\u7528CPU\u65f6\u95f4\u7684\u6bd4\u4f8b\u4e0d\u4f4e\u4e8e25%\uff0c\u4fdd\u8bc1\u6e05\u7406\u80fd\u6b63\u5e38\u5f00\u5c55\uff1b<\/li>\n
                • active-defrag-cycle-max 75\uff1a\u8868\u793a\u81ea\u52a8\u6e05\u7406\u8fc7\u7a0b\u6240\u7528CPU\u65f6\u95f4\u7684\u6bd4\u4f8b\u4e0d\u9ad8\u4e8e75%\uff0c\u4e00\u65e6\u8d85\u8fc7\uff0c\u5c31\u505c\u6b62\u6e05\u7406\uff0c\u4ece\u800c\u907f\u514d\u5728\u6e05\u7406\u65f6\uff0c\u5927\u91cf\u7684\u5185\u5b58\u62f7\u8d1d\u963b\u585eRedis\uff0c\u5bfc\u81f4\u54cd\u5e94\u5ef6\u8fdf\u5347\u9ad8\u3002<\/li>\n<\/ul>\n
                  \u603b\u7ed3<\/h2>\n
                  \u5185\u5b58\u788e\u7247\u81ea\u52a8\u6e05\u7406\u6d89\u53ca\u5185\u5b58\u62f7\u8d1d\uff0c\u8fd9\u5bf9 Redis \u800c\u8a00\uff0c\u662f\u4e2a\u6f5c\u5728\u7684\u98ce\u9669\u3002\u5982\u679c\u4f60\u5728\u5b9e\u8df5\u8fc7\u7a0b\u4e2d\u9047\u5230 Redis \u6027\u80fd\u53d8\u6162\uff0c\u8bb0\u5f97\u901a\u8fc7\u65e5\u5fd7\u770b\u4e0b\u662f\u5426\u6b63\u5728\u8fdb\u884c\u788e\u7247\u6e05\u7406\u3002\u5982\u679c Redis \u7684\u786e\u6b63\u5728\u6e05\u7406\u788e\u7247\uff0c\u90a3\u4e48\uff0c\u6211\u5efa\u8bae\u4f60\u8c03\u5c0f active-defrag-cycle-max \u7684\u503c\uff0c\u4ee5\u51cf\u8f7b\u5bf9\u6b63\u5e38\u8bf7\u6c42\u5904\u7406\u7684\u5f71\u54cd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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