{"id":615,"date":"2015-11-19T20:33:01","date_gmt":"2015-11-19T12:33:01","guid":{"rendered":"http:\/\/www.ipcpu.com\/?p=615"},"modified":"2015-11-19T20:33:01","modified_gmt":"2015-11-19T12:33:01","slug":"numa-cpu-concept","status":"publish","type":"post","link":"https:\/\/c.ipcpu.com\/2015\/11\/numa-cpu-concept\/","title":{"rendered":"NUMA\u6982\u8ff0"},"content":{"rendered":"

NUMA\u7b80\u4ecb<\/h2>\n

NUMA\uff08Non-Uniform Memory Access\uff09\u662f\u8d77\u6e90\u4e8eAMD Opteron\u7684\u5fae\u67b6\u6784\uff0c\u540c\u65f6\u88abIntel Nehalem\u91c7\u7528\uff08\u82f1\u7279\u5c14\u5fd7\u5f3aE5500\u4ee5\u4e0a\u7684CPU\u548c\u684c\u9762\u7684i3\u3001i5\u3001i7\u5747\u57fa\u4e8e\u6b64\u67b6\u6784\uff09\u3002\u8fd9\u4e5f\u5e94\u8be5\u662f\u7ee7AMD64\u540eAMD\u5bf9CPU\u67b6\u6784\u7684\u53c8\u4e00\u9879\u91cd\u8981\u6539\u8fdb\u3002<\/p>\n

\u4e3a\u4ec0\u4e48\u8981\u6709NUMA<\/h2>\n

\u5728NUMA\u67b6\u6784\u51fa\u73b0\u524d\uff0cCPU\u6b22\u5feb\u7684\u671d\u7740\u9891\u7387\u8d8a\u6765\u8d8a\u9ad8\u7684\u65b9\u5411\u53d1\u5c55\u3002\u53d7\u5230\u7269\u7406\u6781\u9650\u7684\u6311\u6218\uff0c\u53c8\u8f6c\u4e3a\u6838\u6570\u8d8a\u6765\u8d8a\u591a\u7684\u65b9\u5411\u53d1\u5c55\u3002\u5982\u679c\u6bcf\u4e2acore\u7684\u5de5\u4f5c\u6027\u8d28\u90fd\u662fshare-nothing\uff08\u7c7b\u4f3c\u4e8emap-reduce\u7684node\u8282\u70b9\u7684\u4f5c\u4e1a\u5c5e\u6027\uff09\uff0c\u90a3\u4e48\u4e5f\u8bb8\u5c31\u4e0d\u4f1a\u6709NUMA\u3002\u7531\u4e8e\u6240\u6709CPU Core\u90fd\u662f\u901a\u8fc7\u5171\u4eab\u4e00\u4e2a\u5317\u6865\u6765\u8bfb\u53d6\u5185\u5b58\uff0c\u968f\u7740\u6838\u6570\u5982\u4f55\u7684\u53d1\u5c55\uff0c\u5317\u6865\u5728\u54cd\u5e94\u65f6\u95f4\u4e0a\u7684\u6027\u80fd\u74f6\u9888\u8d8a\u6765\u8d8a\u660e\u663e\u3002\u4e8e\u662f\uff0c\u806a\u660e\u7684\u786c\u4ef6\u8bbe\u8ba1\u5e08\u4eec\uff0c\u5148\u5230\u4e86\u628a\u5185\u5b58\u63a7\u5236\u5668\uff08\u539f\u672c\u5317\u6865\u4e2d\u8bfb\u53d6\u5185\u5b58\u7684\u90e8\u5206\uff09\u4e5f\u505a\u4e2a\u62c6\u5206\uff0c\u5e73\u5206\u5230\u4e86\u6bcf\u4e2acore\u4e0a\u3002\u4e8e\u662fNUMA\u5c31\u51fa\u73b0\u4e86\uff01<\/p>\n

NUMA\u662f\u4ec0\u4e48<\/h2>\n

NUMA\u67b6\u6784\u5c06\u6574\u53f0\u670d\u52a1\u5668\u5206\u4e3a\u82e5\u5e72\u4e2a\u8282\u70b9\uff0c\u6bcf\u4e2a\u8282\u70b9\u4e0a\u6709\u5355\u72ec\u7684CPU\u548c\u5185\u5b58\u3002\u53ea\u6709\u5f53CPU\u8bbf\u95ee\u81ea\u8eab\u8282\u70b9\u5185\u5b58\u5bf9\u5e94\u7684\u7269\u7406\u5730\u5740\u65f6\uff0c\u624d\u4f1a\u6709\u8f83\u77ed\u7684\u54cd\u5e94\u65f6\u95f4\uff08\u540e\u79f0Local Access\uff09\u3002\u800c\u5982\u679c\u9700\u8981\u8bbf\u95ee\u5176\u4ed6\u8282\u70b9\u7684\u5185\u5b58\u7684\u6570\u636e\u65f6\uff0c\u5c31\u9700\u8981\u901a\u8fc7inter-connect\u901a\u9053\u8bbf\u95ee\uff0c\u54cd\u5e94\u65f6\u95f4\u5c31\u76f8\u6bd4\u4e4b\u524d\u53d8\u6162\u4e86\uff08\u540e\u79f0Remote Access\uff09\u3002\u6240\u4ee5NUMA\uff08Non-Uniform Memory Access\uff09\u5c31\u6b64\u5f97\u540d\u3002\u5982\u4e0b\u56fe\u3002
\n<\/p>\n

NUMA\u7684\u7f3a\u9677<\/h2>\n

NUMA\u7684\u5185\u5b58\u5206\u914d\u7b56\u7565\u5bf9\u4e8e\u8fdb\u7a0b\uff08\u6216\u7ebf\u7a0b\uff09\u4e4b\u95f4\u6765\u8bf4\uff0c\u5e76\u4e0d\u662f\u516c\u5e73\u7684\u3002
\n\u5728\u73b0\u6709\u7684Redhat Linux\u4e2d\uff0clocalalloc\u662f\u9ed8\u8ba4\u7684NUMA\u5185\u5b58\u5206\u914d\u7b56\u7565\uff0c\u5373\u4ece\u5f53\u524dnode\u4e0a\u8bf7\u6c42\u5206\u914d\u5185\u5b58\uff0c\u8fd9\u4e2a\u914d\u7f6e\u9009\u9879\u5bfc\u81f4\u8d44\u6e90\u72ec\u5360\u7a0b\u5e8f\u5f88\u5bb9\u6613\u5c06\u67d0\u4e2anode\u7684\u5185\u5b58\u7528\u5c3d\u3002\u800c\u5f53\u67d0\u4e2anode\u7684\u5185\u5b58\u8017\u5c3d\u65f6\uff0cLinux\u53c8\u521a\u597d\u5c06\u8fd9\u4e2anode\u5206\u914d\u7ed9\u4e86\u67d0\u4e2a\u9700\u8981\u6d88\u8017\u5927\u91cf\u5185\u5b58\u7684\u8fdb\u7a0b\uff08\u6216\u7ebf\u7a0b\uff09\uff0cswap\u5c31\u59a5\u59a5\u5730\u4ea7\u751f\u4e86\u3002\u5c3d\u7ba1\u6b64\u65f6\u8fd8\u6709\u5f88\u591apage cache\u53ef\u4ee5\u91ca\u653e\uff0c\u751a\u81f3\u8fd8\u6709\u5f88\u591a\u7684free\u5185\u5b58\u3002<\/p>\n

\u5728BIOS\u91cc\u5173\u95edNUMA<\/h2>\n

\u5728BIOS\u91cc\u627e\u5230Node Interleaving\uff08\u4e00\u822c\u5728Memory setting\uff09<\/p>\n

\u5f53\u8bbe\u7f6e\u4e3aDisabled\uff1a\u8868\u793a\u542f\u7528NUMA\uff0c\u975e\u4e00\u81f4\u8bbf\u95ee\u65b9\u5f0f\u8bbf\u95ee\uff0c\u8fd9\u662f\u9ed8\u8ba4\u914d\u7f6e\u3002
\n\u5f53\u8bbe\u7f6e\u4e3aEnabled\uff1a\u8868\u793asmp\u65b9\u5f0f\u542f\u7528\u5185\u5b58\u4ea4\u9519\u6a21\u5f0f\uff0csmp\u7684\u65b9\u5f0f\uff0c\u5173\u95edNUMA\u3002<\/p>\n

\u5728OS\u7cfb\u7edf\u5c42\u9762\u5173\u95edNUMA<\/h2>\n

\u542f\u52a8MySQL\u4e4b\u524d\u4f7f\u7528numactl \u2013interleave=all\u6765\u4fee\u6539NUMA\u7b56\u7565\u5373\u53ef\u3002<\/p>\n

\u786c\u4ef6\u5c42\u9762\u548c\u8f6f\u4ef6\u5c42\u9762\u5173\u95edNUMA\u5dee\u8ddd<\/h2>\n
\n

\u5728os\u5c42numa\u5173\u95ed\u65f6,\u6253\u5f00bios\u5c42\u7684numa\u4f1a\u5f71\u54cd\u6027\u80fd\uff0cQPS\u4f1a\u4e0b\u964d15-30%;
\n \u5728bios\u5c42\u9762numa\u5173\u95ed\u65f6\uff0c\u65e0\u8bbaos\u5c42\u9762\u7684numa\u662f\u5426\u6253\u5f00\uff0c\u90fd\u4e0d\u4f1a\u5f71\u54cd\u6027\u80fd\u3002 <\/p>\n<\/blockquote>\n

\u76d1\u6d4bNUMA<\/h2>\n
    \n
  1. \u5224\u65adBIOS\u5c42\u9762\u662f\u5426\u5f00\u542fNUMA<\/li>\n<\/ol>\n
    1. #@\u542f\u7528NUMA\u540e\u7684\u663e\u793a<\/span><\/code><\/li>
    2. [<\/span>root@s101<\/span>.<\/span>ipcpu<\/span>.<\/span>com <\/span>~]#<\/span> grep <\/span>-<\/span>i numa <\/span>\/<\/span>var<\/span>\/<\/span>log<\/span>\/<\/span>dmesg<\/span><\/code><\/li>
    3. NUMA<\/span>:<\/span> <\/span>Using<\/span> <\/span>31<\/span> <\/span>for<\/span> the hash shift<\/span>.<\/span><\/code><\/li>
    4. pci_bus <\/span>0000<\/span>:<\/span>00<\/span>:<\/span> on NUMA node <\/span>0<\/span><\/code><\/li>
    5. pci_bus <\/span>0000<\/span>:<\/span>80<\/span>:<\/span> on NUMA node <\/span>1<\/span><\/code><\/li>
    6. #@\u5173\u95edNUMA\u540e\u7684\u663e\u793a<\/span><\/code><\/li>
    7. # grep -i numa \/var\/log\/dmesg<\/span><\/code><\/li>
    8. No<\/span> NUMA configuration found<\/span><\/code><\/li>
    9. pci_bus <\/span>0000<\/span>:<\/span>00<\/span>:<\/span> on NUMA node <\/span>0<\/span><\/code><\/li>
    10. pci_bus <\/span>0000<\/span>:<\/span>80<\/span>:<\/span> on NUMA node <\/span>0<\/span><\/code><\/li><\/ol><\/pre>\n
        \n
      1. \u5217\u4e3e\u7cfb\u7edf\u4e0a\u7684NUMA\u8282\u70b9<\/li>\n<\/ol>\n
        1. [<\/span>root@s101<\/span>.<\/span>ipcpu<\/span>.<\/span>com <\/span>~]#<\/span> numactl <\/span>--<\/span>hardware<\/span><\/code><\/li>
        2. available<\/span>:<\/span> <\/span>2<\/span> nodes <\/span>(<\/span>0<\/span>-<\/span>1<\/span>)<\/span><\/code><\/li>
        3. node <\/span>0<\/span> cpus<\/span>:<\/span> <\/span>0<\/span> <\/span>1<\/span> <\/span>2<\/span> <\/span>3<\/span> <\/span>4<\/span> <\/span>5<\/span> <\/span>6<\/span> <\/span>7<\/span> <\/span>16<\/span> <\/span>17<\/span> <\/span>18<\/span> <\/span>19<\/span> <\/span>20<\/span> <\/span>21<\/span> <\/span>22<\/span> <\/span>23<\/span><\/code><\/li>
        4. node <\/span>0<\/span> size<\/span>:<\/span> <\/span>16259<\/span> MB<\/span><\/code><\/li>
        5. node <\/span>0<\/span> free<\/span>:<\/span> <\/span>2781<\/span> MB<\/span><\/code><\/li>
        6. node <\/span>1<\/span> cpus<\/span>:<\/span> <\/span>8<\/span> <\/span>9<\/span> <\/span>10<\/span> <\/span>11<\/span> <\/span>12<\/span> <\/span>13<\/span> <\/span>14<\/span> <\/span>15<\/span> <\/span>24<\/span> <\/span>25<\/span> <\/span>26<\/span> <\/span>27<\/span> <\/span>28<\/span> <\/span>29<\/span> <\/span>30<\/span> <\/span>31<\/span><\/code><\/li>
        7. node <\/span>1<\/span> size<\/span>:<\/span> <\/span>16384<\/span> MB<\/span><\/code><\/li>
        8. node <\/span>1<\/span> free<\/span>:<\/span> <\/span>956<\/span> MB<\/span><\/code><\/li>
        9. node distances<\/span>:<\/span><\/code><\/li>
        10. node   <\/span>0<\/span>   <\/span>1<\/span><\/code><\/li>
        11.   <\/span>0<\/span>:<\/span>  <\/span>10<\/span>  <\/span>21<\/span><\/code><\/li>
        12.   <\/span>1<\/span>:<\/span>  <\/span>21<\/span>  <\/span>10<\/span><\/code><\/li>
        13. [<\/span>root@s101<\/span>.<\/span>ipcpu<\/span>.<\/span>com <\/span>~]#<\/span> lscpu<\/span><\/code><\/li>
        14. Architecture<\/span>:<\/span>          x86_64<\/span><\/code><\/li>
        15. CPU op<\/span>-<\/span>mode<\/span>(<\/span>s<\/span>):<\/span>        <\/span>32<\/span>-<\/span>bit<\/span>,<\/span> <\/span>64<\/span>-<\/span>bit<\/span><\/code><\/li>
        16. Byte<\/span> <\/span>Order<\/span>:<\/span>            <\/span>Little<\/span> <\/span>Endian<\/span><\/code><\/li>
        17. CPU<\/span>(<\/span>s<\/span>):<\/span>                <\/span>32<\/span><\/code><\/li>
        18. On<\/span>-<\/span>line CPU<\/span>(<\/span>s<\/span>)<\/span> list<\/span>:<\/span>   <\/span>0<\/span>-<\/span>31<\/span><\/code><\/li>
        19. Thread<\/span>(<\/span>s<\/span>)<\/span> per core<\/span>:<\/span>    <\/span>2<\/span><\/code><\/li>
        20. Core<\/span>(<\/span>s<\/span>)<\/span> per socket<\/span>:<\/span>    <\/span>8<\/span><\/code><\/li>
        21. Socket<\/span>(<\/span>s<\/span>):<\/span>             <\/span>2<\/span><\/code><\/li>
        22. NUMA node<\/span>(<\/span>s<\/span>):<\/span>          <\/span>2<\/span><\/code><\/li>
        23. Vendor<\/span> ID<\/span>:<\/span>             <\/span>GenuineIntel<\/span><\/code><\/li>
        24. CPU family<\/span>:<\/span>            <\/span>6<\/span><\/code><\/li>
        25. Model<\/span>:<\/span>                 <\/span>63<\/span><\/code><\/li>
        26. Stepping<\/span>:<\/span>              <\/span>2<\/span><\/code><\/li>
        27. CPU <\/span>MHz<\/span>:<\/span>               <\/span>1200.000<\/span><\/code><\/li>
        28. BogoMIPS<\/span>:<\/span>              <\/span>5193.47<\/span><\/code><\/li>
        29. Virtualization<\/span>:<\/span>        VT<\/span>-<\/span>x<\/span><\/code><\/li>
        30. L1d cache<\/span>:<\/span>\n       <\/span>32K<\/span><\/code><\/li>
        31. L1i cache<\/span>:<\/span>             <\/span>32K<\/span><\/code><\/li>
        32. L2 cache<\/span>:<\/span>              <\/span>256K<\/span><\/code><\/li>
        33. L3 cache<\/span>:<\/span>              <\/span>20480K<\/span><\/code><\/li>
        34. NUMA node0 CPU<\/span>(<\/span>s<\/span>):<\/span>     <\/span>0<\/span>-<\/span>7<\/span>,<\/span>16<\/span>-<\/span>23<\/span><\/code><\/li>
        35. NUMA node1 CPU<\/span>(<\/span>s<\/span>):<\/span>     <\/span>8<\/span>-<\/span>15<\/span>,<\/span>24<\/span>-<\/span>31<\/span><\/code><\/li><\/ol><\/pre>\n
            \n
          1. \u663e\u793a\u5185\u5b58\u7edf\u8ba1\u6570\u636e<\/li>\n<\/ol>\n
            1. [<\/span>root@s101<\/span>.<\/span>ipcpu<\/span>.<\/span>com <\/span>~]#<\/span> numastat<\/span><\/code><\/li>
            2.                            node0           node1<\/span><\/code><\/li>
            3. numa_hit             <\/span>88443251412<\/span>     <\/span>83630576163<\/span><\/code><\/li>
            4. numa_miss             <\/span>1479866167<\/span>      <\/span>6290100571<\/span><\/code><\/li>
            5. numa_foreign          <\/span>6290100571<\/span>      <\/span>1479866167<\/span><\/code><\/li>
            6. interleave_hit             <\/span>14773<\/span>           <\/span>14774<\/span><\/code><\/li>
            7. local_node           <\/span>88443238320<\/span>     <\/span>83630554722<\/span><\/code><\/li>
            8. other_node            <\/span>1479879259<\/span>      <\/span>6290122012<\/span><\/code><\/li><\/ol><\/pre>\n
              \u5f53\u53d1\u73b0numa_miss\u6570\u503c\u6bd4\u8f83\u9ad8\u65f6\uff0c\u8bf4\u660e\u9700\u8981\u5bf9\u5206\u914d\u7b56\u7565\u8fdb\u884c\u8c03\u6574\u3002\u4f8b\u5982\u5c06\u6307\u5b9a\u8fdb\u7a0b\u5173\u8054\u7ed1\u5b9a\u5230\u6307\u5b9a\u7684CPU\u4e0a\uff0c\u4ece\u800c\u63d0\u9ad8\u5185\u5b58\u547d\u4e2d\u7387\u3002<\/p>\n
              \u662f\u5426\u9700\u8981\u5173\u95edNUMA<\/h2>\n
              \u6839\u636e\u5177\u4f53\u4e1a\u52a1\u51b3\u5b9aNUMA\u7684\u4f7f\u7528\u3002<\/p>\n
              \u5982\u679c\u4f60\u7684\u7a0b\u5e8f\u662f\u4f1a\u5360\u7528\u5927\u89c4\u6a21\u5185\u5b58\u7684\uff0c\u4f60\u5927\u591a\u5e94\u8be5\u9009\u62e9\u5173\u95edNUMA Node\u7684\u9650\u5236\uff08\u6216\u4ece\u786c\u4ef6\u5173\u95edNUMA\uff09\u3002\u56e0\u4e3a\u8fd9\u4e2a\u65f6\u5019\u4f60\u7684\u7a0b\u5e8f\u5f88\u6709\u51e0\u7387\u4f1a\u78b0\u5230NUMA\u9677\u9631\u3002<\/p>\n
              \u5982\u679c\u4f60\u7684\u7a0b\u5e8f\u5e76\u4e0d\u5360\u7528\u5927\u5185\u5b58\uff0c\u800c\u662f\u8981\u6c42\u66f4\u5feb\u7684\u7a0b\u5e8f\u8fd0\u884c\u65f6\u95f4\u3002\u4f60\u5927\u591a\u5e94\u8be5\u9009\u62e9\u9650\u5236\u53ea\u8bbf\u95ee\u672cNUMA Node\u7684\u65b9\u6cd5\u6765\u8fdb\u884c\u5904\u7406\u3002<\/p>\n
              \u53c2\u8003\u8d44\u6599<\/h2>\n
              http:\/\/cenalulu.github.io\/linux\/numa\/<\/a><\/p>\n
              http:\/\/mysql.taobao.org\/monthly\/2015\/07\/06\/<\/a><\/p>\n
              https:\/\/www.sqlskills.com\/blogs\/jonathan\/understanding-non-uniform-memory-accessarchitectures-numa\/<\/a><\/p>\n
              http:\/\/www.zouliblog.cn\/?p=37<\/a><\/p>\n
              http:\/\/www.cnblogs.com\/wjoyxt\/p\/4804081.html<\/a><\/p>\n
              http:\/\/www.stratoscale.com\/blog\/openstack\/cpu-pinning-and-numa-awareness\/<\/a><\/p>\n
              http:\/\/www.cnblogs.com\/yubo\/archive\/2010\/04\/23\/1718810.html<\/a><\/p>\n
              \u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1aIPCPU-\u7f51\u7edc\u4e4b\u8def<\/a> » NUMA\u6982\u8ff0<\/a><\/p>","protected":false},"excerpt":{"rendered":"
              NUMA\u7b80\u4ecb NUMA\uff08Non-Uniform Memory Access\uff09\u662f\u8d77\u6e90\u4e8eAMD Opteron\u7684\u5fae\u67b6\u6784\uff0c\u540c\u65f6\u88abIntel Nehalem\u91c7\u7528\uff08\u82f1\u7279\u5c14\u5fd7\u5f3aE5500\u4ee5\u4e0a\u7684CPU\u548c\u684c\u9762\u7684i3\u3001i5\u3001i7\u5747\u57fa\u4e8e\u6b64\u67b6\u6784\uff09\u3002\u8fd9\u4e5f\u5e94\u8be5\u662f\u7ee7AMD64\u540eAMD\u5bf9CPU\u67b6\u6784\u7684\u53c8\u4e00\u9879\u91cd\u8981\u6539\u8fdb\u3002 \u4e3a\u4ec0\u4e48\u8981\u6709NUMA \u5728NUMA\u67b6\u6784\u51fa\u73b0\u524d\uff0cCPU\u6b22\u5feb\u7684\u671d\u7740\u9891\u7387\u8d8a\u6765\u8d8a\u9ad8\u7684\u65b9\u5411\u53d1\u5c55\u3002\u53d7\u5230\u7269\u7406\u6781\u9650\u7684\u6311\u6218\uff0c\u53c8\u8f6c\u4e3a\u6838\u6570\u8d8a\u6765\u8d8a\u591a\u7684\u65b9\u5411\u53d1\u5c55\u3002\u5982\u679c\u6bcf\u4e2acore\u7684\u5de5\u4f5c\u6027\u8d28\u90fd\u662fshare-nothing\uff08\u7c7b\u4f3c\u4e8emap-reduce\u7684node\u8282\u70b9\u7684\u4f5c\u4e1a\u5c5e\u6027\uff09\uff0c\u90a3\u4e48\u4e5f\u8bb8\u5c31\u4e0d\u4f1a\u6709NUMA\u3002\u7531\u4e8e\u6240\u6709CPU Core\u90fd\u662f\u901a\u8fc7\u5171\u4eab\u4e00\u4e2a\u5317\u6865\u6765\u8bfb\u53d6\u5185\u5b58\uff0c\u968f\u7740\u6838\u6570\u5982\u4f55\u7684\u53d1\u5c55\uff0c\u5317\u6865\u5728\u54cd\u5e94\u65f6\u95f4\u4e0a\u7684\u6027\u80fd\u74f6\u9888\u8d8a\u6765\u8d8a\u660e\u663e\u3002\u4e8e\u662f\uff0c\u806a\u660e\u7684\u786c\u4ef6\u8bbe\u8ba1\u5e08\u4eec\uff0c\u5148\u5230\u4e86\u628a\u5185\u5b58\u63a7\u5236\u5668\uff08\u539f\u672c\u5317\u6865\u4e2d\u8bfb\u53d6\u5185\u5b58\u7684\u90e8\u5206\uff09\u4e5f\u505a\u4e2a\u62c6\u5206\uff0c\u5e73\u5206\u5230\u4e86\u6bcf\u4e2acore\u4e0a\u3002\u4e8e\u662fNUMA\u5c31\u51fa\u73b0\u4e86\uff01 NUMA\u662f\u4ec0\u4e48 NUMA\u67b6\u6784\u5c06\u6574\u53f0\u670d\u52a1\u5668\u5206\u4e3a\u82e5\u5e72\u4e2a\u8282\u70b9\uff0c\u6bcf\u4e2a\u8282\u70b9\u4e0a\u6709\u5355\u72ec\u7684CPU\u548c\u5185\u5b58\u3002\u53ea\u6709\u5f53CPU\u8bbf\u95ee\u81ea\u8eab\u8282\u70b9\u5185\u5b58\u5bf9\u5e94\u7684\u7269\u7406\u5730\u5740\u65f6\uff0c\u624d\u4f1a\u6709\u8f83\u77ed\u7684\u54cd\u5e94\u65f6\u95f4\uff08\u540e\u79f0Local Access\uff09\u3002\u800c\u5982\u679c\u9700\u8981\u8bbf\u95ee\u5176\u4ed6\u8282\u70b9\u7684\u5185\u5b58\u7684\u6570\u636e\u65f6\uff0c\u5c31\u9700\u8981\u901a\u8fc7inter-connect\u901a\u9053\u8bbf\u95ee\uff0c\u54cd\u5e94\u65f6\u95f4\u5c31\u76f8\u6bd4\u4e4b\u524d\u53d8\u6162\u4e86\uff08\u540e\u79f0Remote Access\uff09\u3002\u6240\u4ee5NUMA\uff08Non-Uniform Memory Access\uff09\u5c31\u6b64\u5f97\u540d\u3002\u5982\u4e0b\u56fe\u3002 NUMA\u7684\u7f3a\u9677 NUMA\u7684\u5185\u5b58\u5206\u914d\u7b56\u7565\u5bf9\u4e8e\u8fdb\u7a0b\uff08\u6216\u7ebf\u7a0b\uff09\u4e4b\u95f4\u6765\u8bf4\uff0c\u5e76\u4e0d\u662f\u516c\u5e73\u7684\u3002 \u5728\u73b0\u6709\u7684Redhat Linux\u4e2d\uff0clocalalloc\u662f\u9ed8\u8ba4\u7684NUMA\u5185\u5b58\u5206\u914d\u7b56\u7565\uff0c\u5373\u4ece\u5f53\u524dnode\u4e0a\u8bf7\u6c42\u5206\u914d\u5185\u5b58\uff0c\u8fd9\u4e2a\u914d\u7f6e\u9009\u9879\u5bfc\u81f4\u8d44\u6e90\u72ec\u5360\u7a0b\u5e8f\u5f88\u5bb9\u6613\u5c06\u67d0\u4e2anode\u7684\u5185\u5b58\u7528\u5c3d\u3002\u800c\u5f53\u67d0\u4e2anode\u7684\u5185\u5b58\u8017\u5c3d\u65f6\uff0cLinux\u53c8\u521a\u597d\u5c06\u8fd9\u4e2anode\u5206\u914d\u7ed9\u4e86\u67d0\u4e2a\u9700\u8981\u6d88\u8017\u5927\u91cf\u5185\u5b58\u7684\u8fdb\u7a0b\uff08\u6216\u7ebf\u7a0b\uff09\uff0cswap\u5c31\u59a5\u59a5\u5730\u4ea7\u751f\u4e86\u3002\u5c3d\u7ba1\u6b64\u65f6\u8fd8\u6709\u5f88\u591apage cache\u53ef\u4ee5\u91ca\u653e\uff0c\u751a\u81f3\u8fd8\u6709\u5f88\u591a\u7684free\u5185\u5b58\u3002 \u5728BIOS\u91cc\u5173\u95edNUMA \u5728BIOS\u91cc\u627e\u5230Node Interleaving\uff08\u4e00\u822c\u5728Memory setting\uff09 \u5f53\u8bbe\u7f6e\u4e3aDisabled\uff1a\u8868\u793a\u542f\u7528NUMA\uff0c\u975e\u4e00\u81f4\u8bbf\u95ee\u65b9\u5f0f\u8bbf\u95ee\uff0c\u8fd9\u662f\u9ed8\u8ba4\u914d\u7f6e\u3002 \u5f53\u8bbe\u7f6e\u4e3aEnabled\uff1a\u8868\u793asmp\u65b9\u5f0f\u542f\u7528\u5185\u5b58\u4ea4\u9519\u6a21\u5f0f\uff0csmp\u7684\u65b9\u5f0f\uff0c\u5173\u95edNUMA\u3002 \u5728OS\u7cfb\u7edf\u5c42\u9762\u5173\u95edNUMA \u542f\u52a8MySQL\u4e4b\u524d\u4f7f\u7528numactl \u2013interleave=all\u6765\u4fee\u6539NUMA\u7b56\u7565\u5373\u53ef\u3002 \u786c\u4ef6\u5c42\u9762\u548c\u8f6f\u4ef6\u5c42\u9762\u5173\u95edNUMA\u5dee\u8ddd \u5728os\u5c42numa\u5173\u95ed\u65f6,\u6253\u5f00bios\u5c42\u7684numa\u4f1a\u5f71\u54cd\u6027\u80fd\uff0cQPS\u4f1a\u4e0b\u964d15-30%; \u5728bios\u5c42\u9762numa\u5173\u95ed\u65f6\uff0c\u65e0\u8bbaos\u5c42\u9762\u7684numa\u662f\u5426\u6253\u5f00\uff0c\u90fd\u4e0d\u4f1a\u5f71\u54cd\u6027\u80fd\u3002 \u76d1\u6d4bNUMA \u5224\u65adBIOS\u5c42\u9762\u662f\u5426\u5f00\u542fNUMA #@\u542f\u7528NUMA\u540e\u7684\u663e\u793a[root@s101.ipcpu.com ~]# grep -i numa \/var\/log\/dmesgNUMA: Using 31 for the hash shift.pci_bus 0000:00: on NUMA node 0pci_bus 0000:80: on NUMA node […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[49,17,78,44,79,46,80],"_links":{"self":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/615"}],"collection":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/comments?post=615"}],"version-history":[{"count":0,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/615\/revisions"}],"wp:attachment":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/media?parent=615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/categories?post=615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/tags?post=615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}