{"id":311986,"date":"2022-03-10T09:53:59","date_gmt":"2022-03-10T01:53:59","guid":{"rendered":"https:\/\/www.idc.net\/help\/311986\/"},"modified":"2022-03-10T09:53:59","modified_gmt":"2022-03-10T01:53:59","slug":"%e6%b5%85%e8%b0%88sql-server%e5%af%b9%e4%ba%8e%e5%86%85%e5%ad%98%e7%9a%84%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/311986\/","title":{"rendered":"\u6d45\u8c08SQL Server\u5bf9\u4e8e\u5185\u5b58\u7684\u7ba1\u7406"},"content":{"rendered":"

\u7b80\u4ecb<\/strong><\/p>\n

\u7406\u89e3SQL Server\u5bf9\u4e8e\u5185\u5b58\u7684\u7ba1\u7406\u662f\u5bf9\u4e8eSQL Server\u95ee\u9898\u5904\u7406\u548c\u6027\u80fd\u8c03\u4f18\u7684\u57fa\u672c\uff0c\u672c\u7bc7\u6587\u7ae0\u8bb2\u8ff0SQL Server\u5bf9\u4e8e\u5185\u5b58\u7ba1\u7406\u7684\u5185\u5b58\u539f\u7406\u3002<\/p>\n

\u4e8c\u7ea7\u5b58\u50a8(secondary storage)<\/strong><\/p>\n

\u5bf9\u4e8e\u8ba1\u7b97\u673a\u6765\u8bf4\uff0c\u5b58\u50a8\u4f53\u7cfb\u662f\u5206\u5c42\u7ea7\u7684\u3002\u79bbCPU\u8d8a\u8fd1\u7684\u5730\u65b9\u901f\u5ea6\u6109\u5feb\uff0c\u4f46\u5bb9\u91cf\u8d8a\u5c0f(\u5982\u56fe1\u6240\u793a)\u3002\u6bd4\u5982\uff1a\u4f20\u7edf\u7684\u8ba1\u7b97\u673a\u5b58\u50a8\u4f53\u7cfb\u7ed3\u6784\u79bbCPU\u7531\u8fd1\u5230\u8fdc\u4f9d\u6b21\u662f:CPU\u5185\u7684\u5bc4\u5b58\u5668\uff0c\u4e00\u7ea7\u7f13\u5b58\uff0c\u4e8c\u7ea7\u7f13\u5b58\uff0c\u5185\u5b58\uff0c\u786c\u76d8\u3002\u4f46\u540c\u65f6\u79bbCPU\u8d8a\u8fdc\u7684\u5b58\u50a8\u7cfb\u7edf\u90fd\u4f1a\u6bd4\u4e4b\u524d\u7684\u5b58\u50a8\u7cfb\u7edf\u5927\u4e00\u4e2a\u6570\u91cf\u7ea7\u3002\u6bd4\u5982\u786c\u76d8\u901a\u5e38\u8981\u6bd4\u540c\u65f6\u4ee3\u7684\u5185\u5b58\u5927\u4e00\u4e2a\u6570\u91cf\u7ea7\u3002<\/p>\n

\u56fe1.\u8ba1\u7b97\u673a\u5b58\u50a8\u4f53\u7cfb<\/p>\n

\u56e0\u6b64\u5bf9\u4e8eSQL Server\u6765\u8bf4\uff0c\u6b63\u5e38\u7684\u751f\u4ea7\u7cfb\u7edf\u6240\u914d\u7f6e\u7684\u5185\u5b58\u901a\u5e38\u4e0d\u80fd\u88c5\u8f7d\u6240\u6709\u6570\u636e\uff0c\u56e0\u6b64\u4f1a\u6d89\u53ca\u5230\u4e8c\u7ea7\u5b58\u50a8,\u4e5f\u5c31\u662f\u78c1\u76d8\u3002\u78c1\u76d8\u4f5c\u4e3a\u73b0\u4ee3\u8ba1\u7b97\u673a\u7cfb\u7edf\u4e2d***\u7684\u673a\u68b0\u5b58\u50a8\u90e8\u4ef6\uff0c\u8bfb\u53d6\u6570\u636e\u9700\u8981\u79fb\u52a8\u78c1\u5934\uff08\u5177\u4f53\u5173\u4e8e\u78c1\u76d8\u7684\u539f\u7406\uff0c\u53ef\u4ee5\u770b\u6211\u4e4b\u524d\u5199\u7684\u4e00\u7bc7\u6587\u7ae0\uff09,\u5e76\u4e14\u7531\u4e8e\u6570\u636e\u5e93\u6240\u8bbf\u95ee\u7684\u6570\u636e\u5f80\u5f80\u662f\u968f\u673a\u5206\u5e03\u5728\u78c1\u76d8\u7684\u5404\u4e2a\u4f4d\u7f6e,\u56e0\u6b64\u5982\u679c\u9891\u7e41\u7684\u8bfb\u53d6\u78c1\u76d8\u9700\u8981\u9891\u7e41\u7684\u79fb\u52a8\u78c1\u5934,\u8fd9\u4e2a\u6027\u80fd\u5c06\u4f1a\u5341\u5206\u5e95\u4e0b\u3002<\/p>\n

\u7531\u8ba1\u7b97\u673a\u4f53\u5b58\u50a8\u4f53\u7cfb\u7ed3\u6784\u53ef\u4ee5\u77e5\u9053\uff0c\u8ba1\u7b97\u673a\u5bf9\u4e8e\u6240\u6709\u786c\u76d8\u5185\u6570\u636e\u7684\u64cd\u4f5c\u90fd\u9700\u8981\u9996\u5148\u8bfb\u53d6\u5230\u5185\u5b58\uff0c\u56e0\u6b64\u5229\u7528\u597d\u5185\u5b58\u7684\u7f13\u51b2\u533a\u800c\u51cf\u5c11\u5bf9\u78c1\u76d8IO\u7684\u8bbf\u95ee\u5c06\u4f1a\u662f\u63d0\u5347SQL Server\u6027\u80fd\u7684\u5173\u952e\uff0c\u8fd9\u4e5f\u662f\u672c\u7bc7\u6587\u7ae0\u5199\u4f5c\u7684\u51fa\u53d1\u70b9\u4e4b\u4e00\u3002<\/p>\n

SQL Server\u5f15\u64ce\uff0c\u4e00\u4e2a\u81ea\u6211\u8c03\u6574\u7684\u5f15\u64ce<\/strong><\/p>\n

\u7531\u4e8eSQL Server\u8fc7\u53bb\u4e00\u76f4\u9762\u5411\u662f\u4e2d\u5c0f\u578b\u4f01\u4e1a\u5e02\u573a\u7684\u539f\u56e0\uff0cSQL Server\u5b58\u50a8\u5f15\u64ce\u88ab\u8bbe\u8ba1\u6210\u4e00\u4e2a\u4e0d\u9700\u8981\u592a\u591a\u914d\u7f6e\u5c31\u80fd\u4f7f\u7528\u7684\u4ea7\u54c1\uff0c\u4ece\u800c\u51cf\u5c11\u4e86\u90e8\u7f72\u6210\u672c\uff0c\u4f46\u8fd9\u4e5f\u662f\u5f88\u591a\u4eba\u4e00\u76f4\u8bdf\u75c5\u7684\u5fae\u8f6f\u5f00\u653e\u7684\u914d\u7f6e\u8fc7\u5c11\u3002\u800c\u5bf9\u4e8eSQL Server\u5982\u4f55\u4f7f\u7528\u5185\u5b58,\u51e0\u4e4e\u6ca1\u6709\u76f4\u63a5\u53ef\u4ee5\u914d\u7f6e\u7684\u7a7a\u95f4\uff0c\u4ec5\u4ec5\u5f00\u653e\u7684\u914d\u7f6e\u53ea\u6709\u662f\u5426\u4f7f\u7528AWE,\u4ee5\u53ca\u5b9e\u4f8b\u5360\u7528\u7684***\u6216\u6700\u5c0f\u5185\u5b58\uff0c\u5982\u56fe2\u6240\u793a\u3002<\/p>\n

\u56fe2.SQL Server\u53ef\u63a7\u63a7\u5236\u5185\u5b58\u7684\u9009\u9879<\/p>\n

\u800c\u5bf9\u4e8e\u5177\u4f53\u7684SQL Server\u5982\u4f55\u4f7f\u7528\u5185\u5b58\uff0c\u4f8b\u5982\u5206\u914d\u7ed9\u6267\u884c\u8ba1\u5212\u7f13\u5b58\u591a\u5c11\uff0c\u5206\u914d\u7ed9\u6570\u636ebuffer\u591a\u5c11\uff0c\u8fd9\u4e9b\u90fd\u65e0\u6cd5\u901a\u8fc7\u914d\u7f6e\u8fdb\u884c\u8c03\u63a7\u3002\u8fd9\u4e5f\u662f\u5f88\u591a\u5176\u5b83\u6280\u672f\u7684\u5f00\u53d1\u4eba\u5458\u5bf9\u4e8e\u4f7f\u7528\u5fae\u8f6f\u6280\u672f\u7684\u5f00\u53d1\u4eba\u5458\u5145\u6ee1\u4f18\u8d8a\u611f\u7684\u539f\u56e0\uff0c\u800c\u5728\u6211\u770b\u6765\uff0c\u867d\u7136SQL Server\u63d0\u4f9b\u53ef\u63a7\u914d\u7f6e\u7684\u5730\u65b9\u5f88\u5c11\uff0c\u4f46\u662f\u5f88\u591a\u5730\u65b9\u90fd\u53ef\u4ee5\u5728\u901a\u6653\u539f\u7406\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u201c\u95f4\u63a5\u201d\u7684\u914d\u7f6e\u3002\u8fd9\u4e5f\u9700\u8981\u4e86\u89e3\u4e00\u4e9bWindows\u7684\u539f\u7406\u3002<\/p>\n

SQL Server\u662f\u5982\u4f55\u4f7f\u7528\u5185\u5b58\u7684<\/strong><\/p>\n

SQL Server\u5b58\u50a8\u5f15\u64ce\u672c\u8eab\u662f\u4e00\u4e2aWindows\u4e0b\u7684\u8fdb\u7a0b\uff0c\u6240\u4ee5SQL Server\u4f7f\u7528\u5185\u5b58\u548c\u5176\u5b83Windows\u8fdb\u7a0b\u4e00\u6837\uff0c\u90fd\u9700\u8981\u5411Windows\u7533\u8bf7\u5185\u5b58\u3002\u4eceWindows\u7533\u8bf7\u5230\u5185\u5b58\u4e4b\u540e\uff0cSQL Server\u4f7f\u7528\u5185\u5b58\u7c97\u7565\u53ef\u4ee5\u5206\u4e3a\u4e24\u90e8\u5206\uff1a\u7f13\u51b2\u6c60\u5185\u5b58\uff08\u6570\u636e\u9875\u548c\u7a7a\u95f2\u9875\uff09,\u975e\u7f13\u51b2\u5185\u5b58(\u7ebf\u7a0b\uff0cDLL,\u94fe\u63a5\u670d\u52a1\u5668\u7b49)\u3002\u800c\u7f13\u51b2\u6c60\u5185\u5b58\u5360\u636e\u4e86SQL Server\u7684\u5927\u90e8\u5206\u5185\u5b58\u4f7f\u7528\u3002\u7f13\u51b2\u6c60\u6240\u5360\u5185\u5b58\u4e5f\u5c31\u662f\u56fe2***\u6700\u5c0f\u5185\u5b58\u6240\u8bbe\u7f6e\u7684\uff0c\u56e0\u6b64sqlservr.exe\u6240\u5360\u7684\u5185\u5b58\u6709\u53ef\u80fd\u4f1a\u5927\u4e8e\u56fe2\u4e2d\u6240\u8bbe\u7f6e\u7684***\u5185\u5b58\u3002<\/p>\n

\u8fd8\u6709\u4e00\u70b9\u662f\uff0cSQL Server\u4f7f\u7528\u5185\u5b58\u7684\u7279\u70b9\u662f\uff1a\u6709\u591a\u5c11\u7528\u591a\u5c11\uff0c\u5e76\u4e14\u7528\u4e86\u4ee5\u540e\u4e0d\u91ca\u653e(\u9664\u975e\u6536\u5230Windows\u5185\u5b58\u538b\u529b\u7684\u901a\u77e5)\u3002\u6bd4\u5982\u6211\u6240\u5728\u516c\u53f8\u7684\u5f00\u53d1\u670d\u52a1\u5668\uff0c\u5728\u51e0\u4e4e\u6ca1\u6709\u8d1f\u8f7d\u7684\u65f6\u5019\u6765\u770b\u5185\u5b58\u4f7f\u7528\uff0c\u5982\u56fe3\u6240\u793a\u3002<\/p>\n

\u56fe3.SQL Server \u8fdb\u7a0b\u7684\u5185\u5b58\u4f7f\u7528<\/p>\n

 <\/p>\n

\u53ef\u4ee5\u770b\u5230CPU\u57280\u8d1f\u8f7d\u7684\u65f6\u5019\uff0c\u5185\u5b58\u5374\u5360\u636e\u4e8613\u4e2aG\u3002\u8fd9\u5176\u5b9e\u662f\u5728\u4e4b\u524d\u7684\u4f7f\u7528SQL Server\u5411Windows\u7533\u8bf7\u7684\u5185\u5b58\u4e00\u76f4\u6ca1\u6709\u91ca\u653e\u6240\u81f4\u3002<\/p>\n

\u5177\u4f53SQL Server\u80fd\u591f\u4f7f\u7528\u591a\u5c11\u5185\u5b58\u662f\u7531\u4ee5\u4e0b\u51e0\u4e2a\u56e0\u7d20\u51b3\u5b9a\u7684\uff1a<\/p>\n

    \n
  1. \u7269\u7406\u5185\u5b58\u7684\u5927\u5c0f<\/li>\n
  2. \u6240\u5b89\u88c5Windows\u7248\u672c\u5bf9\u4e8e\u5185\u5b58\u7684\u9650\u5236(\u6bd4\u5982windows server 2008\u6807\u51c6\u7248\u9650\u5236***\u5185\u5b58\u53ea\u80fd\u4f7f\u752832GB)<\/li>\n
  3. SQL Server\u662f32\u4f4d\u621664\u4f4d<\/li>\n
  4. \u5982\u56fe2\u6240\u793a\u914d\u7f6eSQL Server\u5bf9\u4e8e\u5185\u5b58\u7684\u4f7f\u7528\u91cf<\/li>\n
  5. SQL Server\u7684\u7248\u672c(\u6bd4\u5982express\u7248\u53ea\u80fd\u75281G\u5185\u5b58)<\/li>\n<\/ol>\n

    #p#<\/p>\n

    SQL Server OS\u7684\u4e09\u5c42\u5185\u5b58\u5206\u914d<\/strong><\/p>\n

    SQL Server OS\u5bf9\u4e8e\u5185\u5b58\u7684\u5206\u914d\u5206\u4e3a\u4e09\u4e2a\u5c42\u7ea7,\u4f9d\u8d56\u5173\u7cfb\u5982\u56fe4\u6240\u793a\u3002<\/p>\n

     
    \u56fe4.SQL Server OS\u5185\u5b58\u4f9d\u8d56\u5173\u7cfb<\/p>\n

    Memory Node<\/strong><\/p>\n

    \u9996\u5148***\u5c42\u7684\u662fMemory Node,Memory Node\u7684\u4f5c\u7528\u662f\u4f7f\u5f97\u5206\u914d\u5185\u5b58\u7531Windows\u79fb\u4ea4\u5230SQL Server OS\u5c42\u9762\u6267\u884c\u3002\u6bcf\u4e2aSQL Server\u5b9e\u4f8b\u901a\u5e38\u90fd\u53ea\u62e5\u6709\u4e00\u4e2aMemory Node,Memory Node\u7684\u591a\u5be1\u53ea\u53d6\u51b3\u4e8eNUMA\u6784\u67b6\u7684\u786c\u4ef6\u914d\u7f6e\u3002\u6211\u4eec\u901a\u8fc7 DBCC MEMORYSTATUS  \u53ef\u4ee5\u770b\u5230Memory Node\u7684\u4e00\u4e9b\u4fe1\u606f,\u5982\u56fe5\u6240\u793a\u3002<\/p>\n

       
    \u56fe5.\u67e5\u770bMemory Node\u4fe1\u606f<\/p>\n

    \u6211\u4eec\u53ef\u4ee5\u770b\u51fa \uff0c\u6309\u7167\u7533\u8bf7\u5185\u5b58\u5927\u5c0f\u5206\u7c7b\uff0c\u53ef\u4ee5\u5206\u4e3a\u4e24\u90e8\u5206<\/p>\n

    1.\u7533\u8bf7\u5c0f\u4e8e\u7b49\u4e8e8KB\u4e3a\u4e00\u4e2a\u5355\u4f4d\u7684\u5185\u5b58\uff0c\u8fd9\u4e9b\u5185\u5b58\u88ab\u7528\u4e8e\u7f13\u5b58\u3002(\u56fe5\u4e2d\u7684SinglePage Allocator)<\/p>\n

    2.\u7533\u8bf7\u5927\u4e8e8KB\u4e3a\u4e00\u4e2a\u5355\u4f4d\u7684\u5185\u5b58\uff0c\u8fd9\u4e9b\u5185\u5b58\u79f0\u4e3aMulti-Page\uff08\u6216MemToLeave\uff09(\u56fe5\u4e2d\u7684MultiPage Allocator)<\/p>\n

    \u5bf9\u4e8e\u4e3a\u4ec0\u4e48\u53ebMemToLeave,\u88ab\u79f0\u4e3aMemToLeave\u7684\u539f\u56e0\u662f\u7531\u4e8eSQL Server\u867d\u7136\u5927\u90e8\u5206\u5185\u5b58\u88ab\u7528\u4e8e\u7f13\u51b2\u533a\uff0c\u4f46\u8fd8\u9700\u8981\u4e00\u4e9b\u8fde\u7eed\u7684\u5185\u5b58\u7528\u4e8eSQL CLR,linked server,backup buffer\u7b49\u64cd\u4f5c\uff0c32\u4f4dSQL Server\u5728\u542f\u52a8\u5b9e\u4f8b\u65f6\u4f1a\u4fdd\u7559\u4e00\u90e8\u5206\u8fde\u7eed\u7684\u865a\u62df\u5730\u5740\uff08VAS\uff09\u7528\u4e8e\u8fdb\u884cMultiPage Allocator\u3002\u5177\u4f53\u4fdd\u7559\u591a\u5c11\u53ef\u4ee5\u7528\u5982\u4e0b\u516c\u5f0f\u8ba1\u7b97\uff1a<\/p>\n

    \u4fdd\u7559\u5730\u5740=((CPU\u6838\u6570\u91cf-4)+256)*0.5MB+256MB,\u901a\u5e38\u5728384MB\u5de6\u53f3\u3002<\/p>\n

    Memory Clerk<\/strong><\/p>\n

    \u8ba9\u6211\u4eec\u518d\u6765\u770bMemory Clerk,Memory Clerk\u7528\u4e8e\u5206\u914d\u5185\u5b58\uff0c\u7528\u4e8e\u5c06Allocate\u51fa\u53bb\u7684\u5185\u5b58\u8fdb\u884c\u5206\u7c7b\uff0c\u53ef\u4ee5\u7b80\u5355\u7684\u8fdb\u884c\u5982\u4e0b\u8bed\u53e5,\u5982\u56fe6\u6240\u793a.<\/p>\n

    \u56fe6.\u6309\u7167Memory Clerk\u7684\u7c7b\u522b\u8fdb\u884c\u5206\u7c7b<\/p>\n

    \u6ce8\u610f\uff1a\u7531\u56fe4\u53ef\u4ee5\u770b\u5230\uff0cMemory Clerk\u53ea\u662f\u5206\u914d\u5185\u5b58\u7684\u4e00\u90e8\u5206\uff0c\u53e6\u4e00\u90e8\u5206\u662f\u6570\u636e\u7f13\u5b58\uff08Buffer Pool)<\/p>\n

    Buffer Pool<\/strong><\/p>\n

    \u5728\u5f00\u59cb\u8bb2\u8ff0Buffer Pool\u4e4b\u524d\uff0c\u9996\u5148\u60f3\u8bb2\u4e00\u4e0b\u865a\u62df\u5185\u5b58\u3002<\/p>\n

    \u5728Windows\u4e2d\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709\u4e00\u4e2a\u865a\u62df\u5185\u5b58(Virtual Address Space  VAS)\uff0c32\u4f4d\u7cfb\u7edf\u662f2\u768432\u6b21\u65b9\uff0c\u4e5f\u5c31\u662f4G\uff0c\u8fd94G\u88abWindows\u5212\u4e3a\u4e24\u90e8\u5206\uff0c\u4e00\u90e8\u5206\u662fWindows\u4f7f\u7528\uff0c\u53e6\u4e00\u90e8\u5206\u624d\u662f\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u3002\u865a\u62df\u5185\u5b58\u5e76\u4e0d\u662f\u5b9e\u9645\u7684\u7269\u7406\u5185\u5b58\uff0c\u800c\u662f\u5bf9\u4e8e\u7269\u7406\u5185\u5b58\u7684\u6620\u5c04\uff0c\u5f53\u7269\u7406\u5185\u5b58\u4e0d\u5b58\u5728\u865a\u62df\u5185\u5b58\u6307\u5411\u7684\u5185\u5bb9\u65f6\uff0c\u4ea7\u751f\u7f3a\u9875\u4e2d\u65ad\uff0c\u5c06\u4e00\u90e8\u5206\u9875\u9762\u7f6e\u6362\u51fa\u5185\u5b58\uff0c\u7136\u540e\u5c06\u9700\u8981\u7684\u90e8\u5206\u4ece\u786c\u76d8\u8bfb\u5230\u5185\u5b58\uff0c\u5173\u4e8e\u8fd9\u5757\uff0c\u53ef\u4ee5\u8bfb\u6211\u4e4b\u524d\u5199\u7684\u4e00\u7bc7\u6587\u7ae0:\u6d45\u8c08\u64cd\u4f5c\u7cfb\u7edf\u5bf9\u5185\u5b58\u7684\u7ba1\u7406\u3002<\/p>\n

    \u56e0\u6b64Buffer Pool\u7684\u4f5c\u7528\u65f6\u7f13\u51b2\u6570\u636e\u9875\uff0c\u4f7f\u5f97\u672a\u6765\u8bfb\u53d6\u6570\u636e\u65f6\u51cf\u5c11\u5bf9\u78c1\u76d8\u7684\u8bbf\u95ee\u3002<\/p>\n

    \u8fd9\u4e2aBuffer Pool\u8fd9\u90e8\u5206\u5c31\u662f\u56fe2\u4e2d\u8bbe\u7f6e***\u6700\u5c0f\u670d\u52a1\u5668\u5185\u5b58\u6240\u5360\u7528\u7684\u7a7a\u95f4\u3002\u8fd9\u4e2a\u6700\u5c0f\u503c\u5e76\u4e0d\u610f\u5473\u7740SQL Server\u542f\u52a8\u65f6\u5c31\u80fd\u5360\u7528\u8fd9\u4e48\u591a\u5185\u5b58\uff0c\u800c\u662fSQL Server Buffer Pool\u7684\u4f7f\u7528\u4e00\u65e6\u8d85\u8fc7\u8fd9\u4e2a\u503c\uff0c\u5c31\u4e0d\u4f1a\u518d\u8fdb\u884c\u91ca\u653e\u4e86\u3002<\/p>\n

    \u5728DBCC MEMORYSTATUS \u5176\u4e2d\u6709\u4e00\u90e8\u5206\u6211\u4eec\u53ef\u4ee5\u770b\u5230Buffer Pool\u7684\u4fe1\u606f\uff0c\u5982\u56fe7\u6240\u793a\u3002<\/p>\n

    \u56fe7.Buffer Pool\u7684\u76f8\u5173\u4fe1\u606f<\/p>\n

    \u5728SQL Server\u5b9e\u4f8b\u542f\u52a8\u65f6\uff0cBuffer Pool\u6240\u4fdd\u7559\u7684VAS\u5730\u5740\u7a7a\u95f4\u53d6\u51b3\u4e8e\u591a\u4e2a\u56e0\u7d20:\u5305\u62ec\u5b9e\u9645\u7684\u7269\u7406\u5185\u5b58\u548cSQL Server\u662f32\u4f4d\u6216\u662f64\u4f4d\uff08\u8fd9\u4e2a\u9650\u523632\u4f4d\u662f4G\uff0c\u8fd8\u8981\u5212\u4e00\u534a\u7ed9Windows\u548c\u51cf\u53bbMemToLeave\u7a7a\u95f4\uff09,\u800c\u5bf9\u4e8e\u5b9e\u9645\u4e0aSQL Server\u6240\u4f7f\u7528\u7684\u7269\u7406\u5185\u5b58\uff0c\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0b\u8bed\u53e5\u67e5\u770b\uff0c\u5982\u56fe8\u6240\u793a\u3002<\/p>\n

    \u56fe8.\u67e5\u770bBuffer Pool\u6240\u4f7f\u7528\u7269\u7406\u5185\u5b58<\/p>\n

    Buffer Pool\u4f1a\u6309\u7167\u9700\u8981\u4e0d\u65ad\u7684\u63d0\u51fa\u5185\u5b58\u7533\u8bf7\u3002Buffer Pool\u5982\u679c\u9700\u8981\uff0cBuffer Pool\u4f1a\u4e0d\u65ad\u6d88\u8017\u5185\u5b58\uff0c\u76f4\u5230Windows\u901a\u77e5SQL Server\u5185\u5b58\u8fc7\u4f4e\u65f6\uff0cBuffer Pool\u624d\u6709\u53ef\u80fd\u91ca\u653e\u5185\u5b58\uff0c\u5426\u5219Buffer Pool\u5360\u636e\u4e86\u5185\u5b58\u4e0d\u4f1a\u91ca\u653e\u3002<\/p>\n

    \u53e6\u5916\u503c\u5f97\u6ce8\u610f\u7684\u4e00\u70b9\u662f\uff0cBuffer Pool\u6240\u5206\u914d\u7684\u9875\u9762\u548cSQL Server OS\u9875\u9762\u5927\u5c0f\u662f\u4e00\u81f4\u7684\uff0c\u4e5f\u5c31\u662f8192\u5b57\u8282\uff0c\u5f53SQL Server\u5176\u5b83\u90e8\u5206\u9700\u8981\u5411\u201dBuffer Pool\u201d\u501f\u5185\u5b58\u65f6,\u4e5f\u53ea\u80fd\u6309\u71678k\u4e3a\u5355\u4f4d\u501f\uff0c\u5e76\u4e14\u8fd9\u90e8\u5206\u5185\u5b58\u5728\u7269\u7406\u5185\u5b58\u4e2d\u662f\u4e0d\u8fde\u7eed\u7684\uff0c\u8fd9\u542c\u4e0a\u53bb\u50cf\u662fBuffer Pool\u5185\u5b58\u7ba1\u7406\u81ea\u6210\u4f53\u7cfb[[91120]]<\/span>\uff0c\u53ef\u4ee5\u8fd9\u4e48\u7406\u89e3\uff0c\u56e0\u4e3aBuffer Pool \u4e0d\u4f7f\u7528\u4efb\u4f55SQL Server\u7684page allocator,\u800c\u76f4\u63a5\u4f7f\u7528virtual\u6216AWE SQLOS's\u7684\u63a5\u53e3\u3002<\/p>\n

    \u6240\u4ee5SQL Server\u6240\u5360\u7528\u7684\u5185\u5b58\u53ef\u4ee5\u7528\u8fd9\u4e2a\u516c\u5f0f\u7c97\u7565\u4f30\u7b97\u51fa\u6765: buffer pool\u5360\u7528\u7684\u5185\u5b58+\u4ecebuffer pool\u501f\u7684\u9875\u5360\u5f97\u5185\u5b58+multiPageAllocator\u5206\u914d\u7684\u975ebuffer pool\u5185\u5b58\uff0c\u5982\u56fe9\u6240\u793a\u3002<\/p>\n

    \u56fe9.\u53ef\u4ee5\u8fd1\u4f3c\u7684\u4f30\u7b97\u51fasql server\u6240\u5360\u7684\u5185\u5b58<\/p>\n

    Memory Object<\/strong><\/p>\n

    menory object\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u5806,\u7531Page Allocator\u8fdb\u884c\u5206\u914d\uff0c\u53ef\u4ee5\u901a\u8fc7sys.dm_os_memory_objects\u8fd9\u4e2aDMV\u8fdb\u884c\u67e5\u770b\uff0c\u8fd9\u4e2aDMV\u53ef\u4ee5\u770b\u5230\u6709\u4e00\u5217 Page_Allocator_Address\u5217\uff0c\u8fd9\u5217\u5c31\u662fMemory Clerk\u7684\u6807\u8bc6\uff0c\u8868\u660e\u8fd9\u4e2aMemory Object\u662f\u7531\u54ea\u4e2aMemory Clerk\u8fdb\u884c\u5206\u914d\u7684\u3002<\/p>\n

    #p#<\/p>\n

    32\u4f4dSQL Server\u7684\u5185\u5b58\u74f6\u9888<\/strong><\/p>\n

    \u7531\u6587\u7ae0\u524d\u9762\u6240\u8ff0\u7684\u4e00\u4e9b\u57fa\u672c\u539f\u7406\u53ef\u4ee5\u770b\u51fa\uff0c\u7531\u4e8e32\u4f4d\u7684SQL Server\u4f7f\u7528\u7684\u662fVAS\u8fdb\u884c\u5730\u5740\u5206\u914d\uff0c\u56e0\u6b64\u5bfb\u5740\u7a7a\u95f4\u88ab\u9650\u5236\u57284GB\uff0c\u8fd94GB\u8fd8\u8981\u6709\u4e00\u534a\u5206\u7ed9Windows,\u4f7f\u5f97Buffer Pool\u6700\u591a\u53ea\u80fd\u7528\u52302G\u7684\u5185\u5b58\uff0c\u8fd9\u4f7f\u5f9732\u4f4dSQL Server\u5373\u4f7f\u6709\u591a\u4f59\u7684\u7269\u7406\u5185\u5b58\uff0c\u4e5f\u65e0\u6cd5\u4f7f\u7528\u3002<\/p>\n

    \u89e3\u51b3\u529e\u6cd5\u4e4b\u4e00\u662f\u901a\u8fc7\u51cf\u5c11Windows\u9ed8\u8ba4\u5360\u7528\u76842G\u52301G\uff0c\u4f7f\u5f97SQL Server\u53ef\u4ee5\u4f7f\u7528\u7684\u5185\u5b58\u53d8\u4e3a3G\u3002\u8fd9\u4e2a\u53ef\u4ee5\u901a\u8fc7\u5728Windows Server 2008\u4e2d\u7684\u547d\u4ee4\u884c\u952e\u5165 BCDEdit \/set\u8bbe\u7f6eincreaseuserva\u9009\u9879\uff0c\u8bbe\u7f6e\u503c\u4e3a3072MB\uff0c\u5bf9\u4e8eWindows Server 2003\u6765\u8bf4\uff0c\u9700\u8981\u5728boot.ini\u4e2d\u52a0\u4e0a\/3gb\u542f\u52a8\u53c2\u6570\u3002<\/p>\n

    \u53e6\u4e00\u79cd\u529e\u6cd5\u662f\u4f7f\u7528AWE\uff08Address Window Extension\uff09\u5206\u914d\u5185\u5b58\u3002AWE\u901a\u8fc7\u8ba1\u7b97\u673a\u7269\u7406\u5730\u5740\u6269\u5c55(Physical Address Extension PAE)\uff0c\u589e\u52a04\u4f4d\uff0c\u4f7f\u5f9732\u4f4d\u7684CPU\u5bfb\u5740\u8303\u56f4\u589e\u52a0\u52302\u768436\u6b21\u65b9\uff0c\u4e5f\u5c31\u662f64GB\u3002\u57fa\u672c\u89e3\u51b3\u4e86\u5bfb\u5740\u8303\u56f4\u4e0d\u591f\u7684\u95ee\u9898\u3002<\/p>\n

    VirtualAlloc\u548cAllocateUserPhysicalPages<\/strong><\/p>\n

    VirtualAlloc \u548cAllocateUserPhysicalPages\u662fSQL Server\u5411Windows\u7533\u8bf7\u5185\u5b58\u6240\u4f7f\u7528\u7684\u65b9\u6cd5\u3002\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cSQL Server\u6240\u9700\u8981\u7684\u6240\u6709\u5185\u5b58\u90fd\u4f1a\u4f7f\u7528VirtualAlloc\u53bbWindows\u7533\u8bf7\u5185\u5b58\uff0c\u8fd9\u79cd\u7533\u8bf7\u662f\u64cd\u4f5c\u7cfb\u7edf\u5c42\u9762\u7684\uff0c\u4e5f\u5c31\u662f\u76f4\u63a5\u5bf9\u5e94\u7684\u865a\u62df\u5185\u5b58\u3002\u8fd9\u5bfc\u81f4\u4e00\u4e2a\u95ee\u9898\uff0c\u6240\u6709\u901a\u8fc7VirtualAlloc\u5206\u914d\u7684\u5185\u5b58\u90fd\u53ef\u4ee5\u5728Windows\u9762\u4e34\u5185\u5b58\u538b\u529b\u65f6\u88ab\u7f6e\u6362\u5230\u865a\u62df\u5185\u5b58\u4e2d\u3002\u8fd9\u4f1a\u9020\u6210IO\u5360\u7528\u95ee\u9898\u3002<\/p>\n

    \u800c\u4f7f\u7528AllocateUserPhysicalPages\u6240\u7533\u8bf7\u7684\u5185\u5b58\uff0c\u76f4\u63a5\u548c\u66f4\u5e95\u5c42\u7684\u9875\u8868(Page Table)\u8fdb\u884c\u5339\u914d\uff0c\u56e0\u6b64\u4f7f\u7528\u8fd9\u4e2a\u65b9\u6cd5\u7533\u8bf7\u7684\u5185\u5b58\u4e0d\u4f1a\u88ab\u7f6e\u6362\u51fa\u5185\u5b58\u3002\u572832\u4f4dSQL Server\u7684\u60c5\u51b5\u4e0b\uff0c\u901a\u8fc7\u5f00\u542fAWE\u5206\u914d\u5185\u5b58\uff0cbuffer pool\u4e2d\u7684data cache\u90e8\u5206\u5c06\u4f1a\u4f7f\u7528\u8fd9\u4e2a\u51fd\u6570\uff0c\u800cMemToLeave\u90e8\u5206\u548cBuffer Pool\u4e2d\u7684\u53e6\u4e00\u90e8\u5206\u5185\u5b58\uff08\u4e3b\u8981\u662f\u6267\u884c\u8ba1\u5212\u7f13\u5b58\uff09\u4f9d\u7136\u901a\u8fc7VirtualAlloc\u8fdb\u884c\u5185\u5b58\u5206\u914d\u3002<\/p>\n

    \u56e0\u6b64\u5728\u5f00\u542f\u901a\u8fc7AWE\u5206\u914d\u5185\u5b58\u4e4b\u524d\uff0cSQL Server\u9996\u5148\u9700\u8981\u5bf9\u5e94\u7684\u6743\u9650\uff0c\u5426\u5219\u5c31\u4f1a\u5728\u65e5\u5fd7\u4e2d\u62a5\u9519\uff0c\u5982\u56fe10\u6240\u793a\u3002<\/p>\n

    \u56fe10.\u5f00\u542fAWE\u5374\u6ca1\u6709\u5f00\u542f\u5bf9\u5e94\u6743\u9650\u62a5\u9519<\/p>\n

    \u6211\u4eec\u53ef\u4ee5\u5728\u7ec4\u7b56\u7565\u91cc\u8bbe\u7f6e\u542f\u52a8SQL Server\u7684\u8d26\u6237\u62e5\u6709\u8fd9\u4e2a\u6743\u9650\uff0c\u5982\u56fe11\u6240\u793a\u3002<\/p>\n

    \u56fe11.\u9501\u5b9a\u5185\u5b58\u9875(Lock Page In Memory)<\/p>\n

    64\u4f4dSQL Server\u7684\u95ee\u9898<\/strong><\/p>\n

    64\u4f4dWindows\u57fa\u672c\u5df2\u7ecf\u4e0d\u5b58\u5728\u4e0a\u8ff0\u7684\u5185\u5b58\u95ee\u9898\uff0c\u4f46\u662f\u4f9d\u7136\u8981\u6ce8\u610f\uff0c\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c64\u4f4d\u7684SQL Server\u4f7f\u7528\u7684\u4f9d\u7136\u662fVirtualAlloc \u8fdb\u884c\u5185\u5b58\u5206\u914d\uff0c\u8fd9\u610f\u5473\u7740\u6240\u6709\u5206\u914d\u7684\u5185\u5b58\u90fd\u4f1a\u5728Windows\u9762\u4e34\u538b\u529b\u65f6\u5c06\u9875\u7f6e\u6362\u51fa\u53bb\uff0c\u8fd9\u5f88\u53ef\u80fd\u9020\u6210\u6296\u52a8\uff08Buffer Pool Churn\uff09,\u8fd9\u79cd\u60c5\u51b5\u4e5f\u5c31\u662fSQL Server Buffer Pool\u4e2d\u7684\u9875\u4e0d\u65ad\u7684\u88ab\u4ea4\u6362\u8fdb\u786c\u76d8\uff0c\u9020\u6210\u5927\u91cf\u7684IO\u5360\u7528(\u53ef\u4ee5\u901a\u8fc7sys.dm_exec_query_memory_grants\u8fd9\u4e2aDMV\u67e5\u770b\u7b49\u5f85\u5185\u5b58\u7684\u67e5\u8be2),\u56e0\u6b6464\u4f4dSQL Server\u5c06Buffer Pool\u4e2d\u7684Date Page\u901a\u8fc7AllocateUserPhysicalPages\u6765\u8fdb\u884c\u5185\u5b58\u5206\u914d\u5c31\u80fd\u907f\u514d\u8fd9\u4e2a\u95ee\u9898\u3002\u4e0e32\u4f4dSQL Server\u4e0d\u540c\u7684\u662f\uff0c64\u4f4dSQL Server\u5e76\u4e0d\u9700\u8981\u5f00\u542fAWE,\u53ea\u9700\u5f00\u542f\u5982\u56fe11\u6240\u793a\u7684\u201cLock Page In Memory\u201d\u5c31\u884c\u4e86\u3002<\/p>\n

    \u4f46\u8fd9\u53c8\u66b4\u6f0f\u51fa\u4e86\u53e6\u4e00\u4e2a\u95ee\u9898\uff0c\u56e0\u4e3aSQL Server\u9501\u5b9a\u4e86\u5185\u5b58\u9875\uff0c\u5f53Windows\u5185\u5b58\u544a\u6025\u65f6\uff0cSQL Server\u5c31\u4e0d\u80fd\u5bf9Windows\u7684\u5185\u5b58\u544a\u6025\u505a\u51fa\u54cd\u5e94\uff08\u5f53\u7136\u4e86Buffer Pool\u4e2d\u7684\u975edata cache\u548cMemToLeave\u90e8\u5206\u4f9d\u7136\u53ef\u4ee5\uff0c\u4f46\u5f80\u5f80\u4e0d\u591f\uff0c\u56e0\u4e3a\u8fd9\u90e8\u5206\u5185\u5b58\u76f8\u6bd4Data Cache\u6d88\u8017\u5f88\u5c0f\uff09\uff0c\u56e0\u4e3aSQL Server\u7684\u7279\u6027\u662f\u5185\u5b58\u6709\u591a\u5c11\u7528\u591a\u5c11\uff0c\u56e0\u6b64\u5f88\u6709\u53ef\u80fd\u5728\u65e0\u6cd5\u505a\u51fa\u5bf9Windows\u4f4e\u5185\u5b58\u7684\u54cd\u5e94\u65f6\u9020\u6210Windows\u7684\u4e0d\u7a33\u5b9a\u751a\u81f3\u5d29\u6e83\u3002\u56e0\u6b64\u5f00\u542f\u4e86\u201dLock Page In Memory\u201d\u4e4b\u540e\uff0c\u8981\u9650\u5236SQL Server Buffer Pool\u7684\u5185\u5b58\u4f7f\u7528\uff0c\u524d\u9762\u56fe2\u4e2d\u5df2\u7ecf\u8bf4\u4e86\uff0c\u8fd9\u91cc\u5c31\u4e0d\u518d\u7ec6\u8bf4\u4e86\u3002<\/p>\n

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    \u539f\u6587\u94fe\u63a5\uff1ahttp:\/\/www.cnblogs.com\/CareySon\/archive\/2012\/08\/16\/HowSQLServerManageMemory.html<\/p>\n","protected":false},"excerpt":{"rendered":"

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