{"id":4684,"date":"2020-10-25T12:35:00","date_gmt":"2020-10-25T04:35:00","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=4684"},"modified":"2020-10-25T12:35:00","modified_gmt":"2020-10-25T04:35:00","slug":"%e5%88%9d%e5%ad%a6%e8%80%85%e4%b9%9f%e8%83%bd%e7%9c%8b%e6%87%82%e7%9a%84dpdk%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/4684","title":{"rendered":"\u521d\u5b66\u8005\u4e5f\u80fd\u770b\u61c2\u7684DPDK\u89e3\u6790"},"content":{"rendered":"

\u539f\u6587\u5730\u5740<\/a><\/p>\n

 <\/p>\n

\n

\u4e00\u3001\u7f51\u7edcIO\u7684\u5904\u5883\u548c\u8d8b\u52bf<\/strong><\/p>\n

\u4ece\u6211\u4eec\u7528\u6237\u7684\u4f7f\u7528\u5c31\u53ef\u4ee5\u611f\u53d7\u5230\u7f51\u901f\u4e00\u76f4\u5728\u63d0\u5347\uff0c\u800c\u7f51\u7edc\u6280\u672f\u7684\u53d1\u5c55\u4e5f\u4ece1GE\/10GE\/25GE\/40GE\/100GE\u7684\u6f14\u53d8\uff0c\u4ece\u4e2d\u53ef\u4ee5\u5f97\u51fa\u5355\u673a\u7684\u7f51\u7edcIO\u80fd\u529b\u5fc5\u987b\u8ddf\u4e0a\u65f6\u4ee3\u7684\u53d1\u5c55\u3002<\/p>\n

1.<\/strong>\u00a0\u4f20\u7edf\u7684\u7535\u4fe1\u9886\u57df<\/strong><\/p>\n

IP\u5c42\u53ca\u4ee5\u4e0b\uff0c\u4f8b\u5982\u8def\u7531\u5668\u3001\u4ea4\u6362\u673a\u3001\u9632\u706b\u5899\u3001\u57fa\u7ad9\u7b49\u8bbe\u5907\u90fd\u662f\u91c7\u7528\u786c\u4ef6\u89e3\u51b3\u65b9\u6848\u3002\u57fa\u4e8e\u4e13\u7528\u7f51\u7edc\u5904\u7406\u5668\uff08NP\uff09\uff0c\u6709\u57fa\u4e8eFPGA\uff0c\u66f4\u6709\u57fa\u4e8eASIC\u7684\u3002\u4f46\u662f\u57fa\u4e8e\u786c\u4ef6\u7684\u52a3\u52bf\u975e\u5e38\u660e\u663e\uff0c\u53d1\u751fBug\u4e0d\u6613\u4fee\u590d\uff0c\u4e0d\u6613\u8c03\u8bd5\u7ef4\u62a4\uff0c\u5e76\u4e14\u7f51\u7edc\u6280\u672f\u4e00\u76f4\u5728\u53d1\u5c55\uff0c\u4f8b\u59822G\/3G\/4G\/5G\u7b49\u79fb\u52a8\u6280\u672f\u7684\u9769\u65b0\uff0c\u8fd9\u4e9b\u5c5e\u4e8e\u4e1a\u52a1\u7684\u903b\u8f91\u57fa\u4e8e\u786c\u4ef6\u5b9e\u73b0\u592a\u75db\u82e6\uff0c\u4e0d\u80fd\u5feb\u901f\u8fed\u4ee3\u3002\u4f20\u7edf\u9886\u57df\u9762\u4e34\u7684\u6311\u6218\u662f\u6025\u9700\u4e00\u5957\u8f6f\u4ef6\u67b6\u6784\u7684\u9ad8\u6027\u80fd\u7f51\u7edcIO\u5f00\u53d1\u6846\u67b6\u3002<\/p>\n

2.<\/strong>\u00a0\u4e91\u7684\u53d1\u5c55<\/strong><\/p>\n

\u79c1\u6709\u4e91\u7684\u51fa\u73b0\u901a\u8fc7\u7f51\u7edc\u529f\u80fd\u865a\u62df\u5316\uff08NFV\uff09\u5171\u4eab\u786c\u4ef6\u6210\u4e3a\u8d8b\u52bf\uff0cNFV\u7684\u5b9a\u4e49\u662f\u901a\u8fc7\u6807\u51c6\u7684\u670d\u52a1\u5668\u3001\u6807\u51c6\u4ea4\u6362\u673a\u5b9e\u73b0\u5404\u79cd\u4f20\u7edf\u7684\u6216\u65b0\u7684\u7f51\u7edc\u529f\u80fd\u3002\u6025\u9700\u4e00\u5957\u57fa\u4e8e\u5e38\u7528\u7cfb\u7edf\u548c\u6807\u51c6\u670d\u52a1\u5668\u7684\u9ad8\u6027\u80fd\u7f51\u7edcIO\u5f00\u53d1\u6846\u67b6\u3002<\/p>\n

3.<\/strong>\u00a0\u5355\u673a\u6027\u80fd\u7684\u98d9\u5347<\/strong><\/p>\n

\u7f51\u5361\u4ece1G\u5230100G\u7684\u53d1\u5c55\uff0cCPU\u4ece\u5355\u6838\u5230\u591a\u6838\u5230\u591aCPU\u7684\u53d1\u5c55\uff0c\u670d\u52a1\u5668\u7684\u5355\u673a\u80fd\u529b\u901a\u8fc7\u6a2a\u884c\u6269\u5c55\u8fbe\u5230\u65b0\u7684\u9ad8\u70b9\u3002\u4f46\u662f\u8f6f\u4ef6\u5f00\u53d1\u5374\u65e0\u6cd5\u8ddf\u4e0a\u8282\u594f\uff0c\u5355\u673a\u5904\u7406\u80fd\u529b\u6ca1\u80fd\u548c\u786c\u4ef6\u95e8\u5f53\u6237\u5bf9\uff0c\u5982\u4f55\u5f00\u53d1\u51fa\u4e0e\u65f6\u5e76\u8fdb\u9ad8\u541e\u5410\u91cf\u7684\u670d\u52a1\uff0c\u5355\u673a\u767e\u4e07\u5343\u4e07\u5e76\u53d1\u80fd\u529b\u3002\u5373\u4f7f\u6709\u4e1a\u52a1\u5bf9QPS\u8981\u6c42\u4e0d\u9ad8\uff0c\u4e3b\u8981\u662fCPU\u5bc6\u96c6\u578b\uff0c\u4f46\u662f\u73b0\u5728\u5927\u6570\u636e\u5206\u6790\u3001\u4eba\u5de5\u667a\u80fd\u7b49\u5e94\u7528\u90fd\u9700\u8981\u5728\u5206\u5e03\u5f0f\u670d\u52a1\u5668\u4e4b\u95f4\u4f20\u8f93\u5927\u91cf\u6570\u636e\u5b8c\u6210\u4f5c\u4e1a\u3002\u8fd9\u70b9\u5e94\u8be5\u662f\u6211\u4eec\u4e92\u8054\u7f51\u540e\u53f0\u5f00\u53d1\u6700\u5e94\u5173\u6ce8\uff0c\u4e5f\u6700\u5173\u8054\u7684\u3002<\/p>\n

\u4e8c\u3001Linux + x86\u7f51\u7edcIO\u74f6\u9888<\/strong><\/p>\n

\u5728\u6570\u5e74\u524d\u66fe\u7ecf\u5199\u8fc7\u300a\u7f51\u5361\u5de5\u4f5c\u539f\u7406\u53ca\u9ad8\u5e76\u53d1\u4e0b\u7684\u8c03\u4f18\u300b\u4e00\u6587\uff0c\u63cf\u8ff0\u4e86Linux\u7684\u6536\u53d1\u62a5\u6587\u6d41\u7a0b\u3002\u6839\u636e\u7ecf\u9a8c\uff0c\u5728C1\uff088\u6838\uff09\u4e0a\u8dd1\u5e94\u7528\u6bcf1W\u5305\u5904\u7406\u9700\u8981\u6d88\u80171%\u8f6f\u4e2d\u65adCPU\uff0c\u8fd9\u610f\u5473\u7740\u5355\u673a\u7684\u4e0a\u9650\u662f100\u4e07PPS\uff08Packet Per Second\uff09\u3002\u4eceTGW\uff08Netfilter\u7248\uff09\u7684\u6027\u80fd100\u4e07PPS\uff0cAliLVS\u4f18\u5316\u4e86\u4e5f\u53ea\u5230150\u4e07PPS\uff0c\u5e76\u4e14\u4ed6\u4eec\u4f7f\u7528\u7684\u670d\u52a1\u5668\u7684\u914d\u7f6e\u8fd8\u662f\u6bd4\u8f83\u597d\u7684\u3002\u5047\u8bbe\uff0c\u6211\u4eec\u8981\u8dd1\u6ee110GE\u7f51\u5361\uff0c\u6bcf\u4e2a\u530564\u5b57\u8282\uff0c\u8fd9\u5c31\u9700\u89812000\u4e07PPS\uff08\u6ce8\uff1a\u4ee5\u592a\u7f51\u4e07\u5146\u7f51\u5361\u901f\u5ea6\u4e0a\u9650\u662f1488\u4e07PPS\uff0c\u56e0\u4e3a\u6700\u5c0f\u5e27\u5927\u5c0f\u4e3a84B\u300aBandwidth, Packets Per Second, and Other Network Performance Metrics<\/a>\u300b\uff09\uff0c100G\u662f2\u4ebfPPS\uff0c\u5373\u6bcf\u4e2a\u5305\u7684\u5904\u7406\u8017\u65f6\u4e0d\u80fd\u8d85\u8fc750\u7eb3\u79d2\u3002\u800c\u4e00\u6b21Cache Miss\uff0c\u4e0d\u7ba1\u662fTLB\u3001\u6570\u636eCache\u3001\u6307\u4ee4Cache\u53d1\u751fMiss\uff0c\u56de\u5185\u5b58\u8bfb\u53d6\u5927\u7ea665\u7eb3\u79d2\uff0cNUMA\u4f53\u7cfb\u4e0b\u8de8Node\u901a\u8baf\u5927\u7ea640\u7eb3\u79d2\u3002\u6240\u4ee5\uff0c\u5373\u4f7f\u4e0d\u52a0\u4e0a\u4e1a\u52a1\u903b\u8f91\uff0c\u5373\u4f7f\u7eaf\u6536\u53d1\u5305\u90fd\u5982\u6b64\u8270\u96be\u3002\u6211\u4eec\u8981\u63a7\u5236Cache\u7684\u547d\u4e2d\u7387\uff0c\u6211\u4eec\u8981\u4e86\u89e3\u8ba1\u7b97\u673a\u4f53\u7cfb\u7ed3\u6784\uff0c\u4e0d\u80fd\u53d1\u751f\u8de8Node\u901a\u8baf\u3002<\/p>\n

\u4ece\u8fd9\u4e9b\u6570\u636e\uff0c\u6211\u5e0c\u671b\u53ef\u4ee5\u76f4\u63a5\u611f\u53d7\u4e00\u4e0b\u8fd9\u91cc\u7684\u6311\u6218\u6709\u591a\u5927\uff0c\u7406\u60f3\u548c\u73b0\u5b9e\uff0c\u6211\u4eec\u9700\u8981\u4ece\u4e2d\u5e73\u8861\u3002\u95ee\u9898\u90fd\u6709\u8fd9\u4e9b<\/p>\n

1.\u4f20\u7edf\u7684\u6536\u53d1\u62a5\u6587\u65b9\u5f0f\u90fd\u5fc5\u987b\u91c7\u7528\u786c\u4e2d\u65ad\u6765\u505a\u901a\u8baf\uff0c\u6bcf\u6b21\u786c\u4e2d\u65ad\u5927\u7ea6\u6d88\u8017100\u5fae\u79d2\uff0c\u8fd9\u8fd8\u4e0d\u7b97\u56e0\u4e3a\u7ec8\u6b62\u4e0a\u4e0b\u6587\u6240\u5e26\u6765\u7684Cache Miss\u3002<\/p>\n

2.\u6570\u636e\u5fc5\u987b\u4ece\u5185\u6838\u6001\u7528\u6237\u6001\u4e4b\u95f4\u5207\u6362\u62f7\u8d1d\u5e26\u6765\u5927\u91cfCPU\u6d88\u8017\uff0c\u5168\u5c40\u9501\u7ade\u4e89\u3002<\/p>\n

3.\u6536\u53d1\u5305\u90fd\u6709\u7cfb\u7edf\u8c03\u7528\u7684\u5f00\u9500\u3002<\/p>\n

4.\u5185\u6838\u5de5\u4f5c\u5728\u591a\u6838\u4e0a\uff0c\u4e3a\u53ef\u5168\u5c40\u4e00\u81f4\uff0c\u5373\u4f7f\u91c7\u7528Lock Free\uff0c\u4e5f\u907f\u514d\u4e0d\u4e86\u9501\u603b\u7ebf\u3001\u5185\u5b58\u5c4f\u969c\u5e26\u6765\u7684\u6027\u80fd\u635f\u8017\u3002<\/p>\n

5.\u4ece\u7f51\u5361\u5230\u4e1a\u52a1\u8fdb\u7a0b\uff0c\u7ecf\u8fc7\u7684\u8def\u5f84\u592a\u957f\uff0c\u6709\u4e9b\u5176\u5b9e\u672a\u5fc5\u8981\u7684\uff0c\u4f8b\u5982netfilter\u6846\u67b6\uff0c\u8fd9\u4e9b\u90fd\u5e26\u6765\u4e00\u5b9a\u7684\u6d88\u8017\uff0c\u800c\u4e14\u5bb9\u6613Cache Miss\u3002<\/p>\n

\u4e09\u3001DPDK\u7684\u57fa\u672c\u539f\u7406<\/strong><\/p>\n

\u4ece\u524d\u9762\u7684\u5206\u6790\u53ef\u4ee5\u5f97\u77e5IO\u5b9e\u73b0\u7684\u65b9\u5f0f\u3001\u5185\u6838\u7684\u74f6\u9888\uff0c\u4ee5\u53ca\u6570\u636e\u6d41\u8fc7\u5185\u6838\u5b58\u5728\u4e0d\u53ef\u63a7\u56e0\u7d20\uff0c\u8fd9\u4e9b\u90fd\u662f\u5728\u5185\u6838\u4e2d\u5b9e\u73b0\uff0c\u5185\u6838\u662f\u5bfc\u81f4\u74f6\u9888\u7684\u539f\u56e0\u6240\u5728\uff0c\u8981\u89e3\u51b3\u95ee\u9898\u9700\u8981\u7ed5\u8fc7\u5185\u6838\u3002\u6240\u4ee5\u4e3b\u6d41\u89e3\u51b3\u65b9\u6848\u90fd\u662f\u65c1\u8def\u7f51\u5361IO\uff0c\u7ed5\u8fc7\u5185\u6838\u76f4\u63a5\u5728\u7528\u6237\u6001\u6536\u53d1\u5305\u6765\u89e3\u51b3\u5185\u6838\u7684\u74f6\u9888\u3002<\/p>\n

Linux\u793e\u533a\u4e5f\u63d0\u4f9b\u4e86\u65c1\u8def\u673a\u5236Netmap<\/a>\uff0c\u5b98\u65b9\u6570\u636e10G\u7f51\u53611400\u4e07PPS\uff0c\u4f46\u662fNetmap\u6ca1\u5e7f\u6cdb\u4f7f\u7528\u3002\u5176\u539f\u56e0\u6709\u51e0\u4e2a\uff1a<\/p>\n

1.Netmap\u9700\u8981\u9a71\u52a8\u7684\u652f\u6301\uff0c\u5373\u9700\u8981\u7f51\u5361\u5382\u5546\u8ba4\u53ef\u8fd9\u4e2a\u65b9\u6848\u3002<\/p>\n

2.Netmap\u4ecd\u7136\u4f9d\u8d56\u4e2d\u65ad\u901a\u77e5\u673a\u5236\uff0c\u6ca1\u5b8c\u5168\u89e3\u51b3\u74f6\u9888\u3002<\/p>\n

3.Netmap\u66f4\u50cf\u662f\u51e0\u4e2a\u7cfb\u7edf\u8c03\u7528\uff0c\u5b9e\u73b0\u7528\u6237\u6001\u76f4\u63a5\u6536\u53d1\u5305\uff0c\u529f\u80fd\u592a\u8fc7\u539f\u59cb\uff0c\u6ca1\u5f62\u6210\u4f9d\u8d56\u7684\u7f51\u7edc\u5f00\u53d1\u6846\u67b6\uff0c\u793e\u533a\u4e0d\u5b8c\u5584\u3002<\/p>\n

\u90a3\u4e48\uff0c\u6211\u4eec\u6765\u770b\u770b\u53d1\u5c55\u4e86\u5341\u51e0\u5e74\u7684DPDK\uff0c\u4eceIntel\u4e3b\u5bfc\u5f00\u53d1\uff0c\u5230\u534e\u4e3a\u3001\u601d\u79d1\u3001AWS\u7b49\u5927\u5382\u5546\u7684\u52a0\u5165\uff0c\u6838\u5fc3\u73a9\u5bb6\u90fd\u5728\u8be5\u5708\u5b50\u91cc\uff0c\u62e5\u6709\u5b8c\u5584\u7684\u793e\u533a\uff0c\u751f\u6001\u5f62\u6210\u95ed\u73af\u3002\u65e9\u671f\uff0c\u4e3b\u8981\u662f\u4f20\u7edf\u7535\u4fe1\u9886\u57df3\u5c42\u4ee5\u4e0b\u7684\u5e94\u7528\uff0c\u5982\u534e\u4e3a\u3001\u4e2d\u56fd\u7535\u4fe1\u3001\u4e2d\u56fd\u79fb\u52a8\u90fd\u662f\u5176\u65e9\u671f\u4f7f\u7528\u8005\uff0c\u4ea4\u6362\u673a\u3001\u8def\u7531\u5668\u3001\u7f51\u5173\u662f\u4e3b\u8981\u5e94\u7528\u573a\u666f\u3002\u4f46\u662f\uff0c\u968f\u7740\u4e0a\u5c42\u4e1a\u52a1\u7684\u9700\u6c42\u4ee5\u53caDPDK\u7684\u5b8c\u5584\uff0c\u5728\u66f4\u9ad8\u7684\u5e94\u7528\u4e5f\u5728\u9010\u6b65\u51fa\u73b0\u3002<\/p>\n

DPDK\u65c1\u8def\u539f\u7406\uff1a<\/p>\n

\"img\"\u56fe\u7247\u5f15\u81eaJingjing Wu\u7684\u6587\u6863\u300aFlow Bifurcation on Intel\u00ae Ethernet Controller X710\/XL710\u300b<\/p>\n

\u5de6\u8fb9\u662f\u539f\u6765\u7684\u65b9\u5f0f\u6570\u636e\u4ece \u7f51\u5361 -> \u9a71\u52a8 -> \u534f\u8bae\u6808 -> Socket\u63a5\u53e3 -> \u4e1a\u52a1<\/p>\n

\u53f3\u8fb9\u662fDPDK\u7684\u65b9\u5f0f\uff0c\u57fa\u4e8eUIO\uff08Userspace I\/O\uff09\u65c1\u8def\u6570\u636e\u3002\u6570\u636e\u4ece \u7f51\u5361 -> DPDK\u8f6e\u8be2\u6a21\u5f0f-> DPDK\u57fa\u7840\u5e93 -> \u4e1a\u52a1<\/p>\n

\u7528\u6237\u6001\u7684\u597d\u5904\u662f\u6613\u7528\u5f00\u53d1\u548c\u7ef4\u62a4\uff0c\u7075\u6d3b\u6027\u597d\u3002\u5e76\u4e14Crash\u4e5f\u4e0d\u5f71\u54cd\u5185\u6838\u8fd0\u884c\uff0c\u9c81\u68d2\u6027\u5f3a\u3002<\/p>\n

DPDK\u652f\u6301\u7684CPU\u4f53\u7cfb\u67b6\u6784\uff1ax86\u3001ARM\u3001PowerPC\uff08PPC\uff09<\/p>\n

DPDK\u652f\u6301\u7684\u7f51\u5361\u5217\u8868\uff1ahttps:\/\/core.dpdk.org\/supported\/<\/a>\uff0c\u6211\u4eec\u4e3b\u6d41\u4f7f\u7528Intel 82599\uff08\u5149\u53e3\uff09\u3001Intel x540\uff08\u7535\u53e3\uff09<\/p>\n

\u56db\u3001DPDK\u7684\u57fa\u77f3UIO<\/strong><\/p>\n

\u4e3a\u4e86\u8ba9\u9a71\u52a8\u8fd0\u884c\u5728\u7528\u6237\u6001\uff0cLinux\u63d0\u4f9bUIO<\/a>\u673a\u5236\u3002\u4f7f\u7528UIO\u53ef\u4ee5\u901a\u8fc7read\u611f\u77e5\u4e2d\u65ad\uff0c\u901a\u8fc7mmap\u5b9e\u73b0\u548c\u7f51\u5361\u7684\u901a\u8baf\u3002<\/p>\n

UIO\u539f\u7406\uff1a<\/strong><\/p>\n

\"img\"<\/p>\n

\u8981\u5f00\u53d1\u7528\u6237\u6001\u9a71\u52a8\u6709\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n

1.\u5f00\u53d1\u8fd0\u884c\u5728\u5185\u6838\u7684UIO\u6a21\u5757\uff0c\u56e0\u4e3a\u786c\u4e2d\u65ad\u53ea\u80fd\u5728\u5185\u6838\u5904\u7406<\/p>\n

2.\u901a\u8fc7\/dev\/uioX\u8bfb\u53d6\u4e2d\u65ad<\/p>\n

3.\u901a\u8fc7mmap\u548c\u5916\u8bbe\u5171\u4eab\u5185\u5b58<\/p>\n

\u4e94\u3001DPDK\u6838\u5fc3\u4f18\u5316\uff1aPMD<\/strong><\/p>\n

DPDK\u7684UIO\u9a71\u52a8\u5c4f\u853d\u4e86\u786c\u4ef6\u53d1\u51fa\u4e2d\u65ad\uff0c\u7136\u540e\u5728\u7528\u6237\u6001\u91c7\u7528\u4e3b\u52a8\u8f6e\u8be2\u7684\u65b9\u5f0f\uff0c\u8fd9\u79cd\u6a21\u5f0f\u88ab\u79f0\u4e3aPMD<\/a>\uff08Poll Mode Driver\uff09\u3002<\/p>\n

UIO\u65c1\u8def\u4e86\u5185\u6838\uff0c\u4e3b\u52a8\u8f6e\u8be2\u53bb\u6389\u786c\u4e2d\u65ad\uff0cDPDK\u4ece\u800c\u53ef\u4ee5\u5728\u7528\u6237\u6001\u505a\u6536\u53d1\u5305\u5904\u7406\u3002\u5e26\u6765Zero Copy\u3001\u65e0\u7cfb\u7edf\u8c03\u7528\u7684\u597d\u5904\uff0c\u540c\u6b65\u5904\u7406\u51cf\u5c11\u4e0a\u4e0b\u6587\u5207\u6362\u5e26\u6765\u7684Cache Miss\u3002<\/p>\n

\u8fd0\u884c\u5728PMD\u7684Core\u4f1a\u5904\u4e8e\u7528\u6237\u6001CPU100%\u7684\u72b6\u6001<\/p>\n

\"img\"<\/p>\n

\u7f51\u7edc\u7a7a\u95f2\u65f6CPU\u957f\u671f\u7a7a\u8f6c\uff0c\u4f1a\u5e26\u6765\u80fd\u8017\u95ee\u9898\u3002\u6240\u4ee5\uff0cDPDK\u63a8\u51faInterrupt DPDK\u6a21\u5f0f\u3002<\/p>\n

Interrupt DPDK\uff1a<\/strong><\/p>\n

\"img\"\u56fe\u7247\u5f15\u81eaDavid Su\/Yunhong Jiang\/Wei Wang\u7684\u6587\u6863\u300aTowards Low Latency Interrupt Mode DPDK\u300b<\/p>\n

\u5b83\u7684\u539f\u7406\u548cNAPI<\/a>\u5f88\u50cf\uff0c\u5c31\u662f\u6ca1\u5305\u53ef\u5904\u7406\u65f6\u8fdb\u5165\u7761\u7720\uff0c\u6539\u4e3a\u4e2d\u65ad\u901a\u77e5\u3002\u5e76\u4e14\u53ef\u4ee5\u548c\u5176\u4ed6\u8fdb\u7a0b\u5171\u4eab\u540c\u4e2aCPU Core\uff0c\u4f46\u662fDPDK\u8fdb\u7a0b\u4f1a\u6709\u66f4\u9ad8\u8c03\u5ea6\u4f18\u5148\u7ea7\u3002<\/p>\n

\u516d\u3001DPDK\u7684\u9ad8\u6027\u80fd\u4ee3\u7801\u5b9e\u73b0<\/strong><\/p>\n

1.<\/strong>\u00a0\u91c7\u7528<\/strong>HugePage<\/strong><\/a>\u51cf\u5c11TLB Miss<\/strong><\/p>\n

\u9ed8\u8ba4\u4e0bLinux\u91c7\u75284KB\u4e3a\u4e00\u9875\uff0c\u9875\u8d8a\u5c0f\u5185\u5b58\u8d8a\u5927\uff0c\u9875\u8868\u7684\u5f00\u9500\u8d8a\u5927\uff0c\u9875\u8868\u7684\u5185\u5b58\u5360\u7528\u4e5f\u8d8a\u5927\u3002CPU\u6709TLB<\/a>\uff08Translation Lookaside Buffer\uff09\u6210\u672c\u9ad8\u6240\u4ee5\u4e00\u822c\u5c31\u53ea\u80fd\u5b58\u653e\u51e0\u767e\u5230\u4e0a\u5343\u4e2a\u9875\u8868\u9879\u3002\u5982\u679c\u8fdb\u7a0b\u8981\u4f7f\u752864G\u5185\u5b58\uff0c\u521964G\/4KB=16000000\uff08\u4e00\u5343\u516d\u767e\u4e07\uff09\u9875\uff0c\u6bcf\u9875\u5728\u9875\u8868\u9879\u4e2d\u5360\u752816000000 * 4B=62MB\u3002\u5982\u679c\u7528HugePage\u91c7\u75282MB\u4f5c\u4e3a\u4e00\u9875\uff0c\u53ea\u970064G\/2MB=2000\uff0c\u6570\u91cf\u4e0d\u5728\u540c\u4e2a\u7ea7\u522b\u3002<\/p>\n

\u800cDPDK\u91c7\u7528HugePage\uff0c\u5728x86-64\u4e0b\u652f\u63012MB\u30011GB\u7684\u9875\u5927\u5c0f\uff0c\u51e0\u4f55\u7ea7\u7684\u964d\u4f4e\u4e86\u9875\u8868\u9879\u7684\u5927\u5c0f\uff0c\u4ece\u800c\u51cf\u5c11TLB-Miss\u3002\u5e76\u63d0\u4f9b\u4e86\u5185\u5b58\u6c60\uff08Mempool\uff09\u3001MBuf\u3001\u65e0\u9501\u73af\uff08Ring\uff09\u3001Bitmap\u7b49\u57fa\u7840\u5e93\u3002\u6839\u636e\u6211\u4eec\u7684\u5b9e\u8df5\uff0c\u5728\u6570\u636e\u5e73\u9762\uff08Data Plane\uff09\u9891\u7e41\u7684\u5185\u5b58\u5206\u914d\u91ca\u653e\uff0c\u5fc5\u987b\u4f7f\u7528\u5185\u5b58\u6c60\uff0c\u4e0d\u80fd\u76f4\u63a5\u4f7f\u7528rte_malloc\uff0cDPDK\u7684\u5185\u5b58\u5206\u914d\u5b9e\u73b0\u975e\u5e38\u7b80\u964b\uff0c\u4e0d\u5982ptmalloc\u3002<\/p>\n

2.<\/strong>\u00a0SNA\uff08Shared-nothing Architecture\uff09<\/strong><\/p>\n

\u8f6f\u4ef6\u67b6\u6784\u53bb\u4e2d\u5fc3\u5316\uff0c\u5c3d\u91cf\u907f\u514d\u5168\u5c40\u5171\u4eab\uff0c\u5e26\u6765\u5168\u5c40\u7ade\u4e89\uff0c\u5931\u53bb\u6a2a\u5411\u6269\u5c55\u7684\u80fd\u529b\u3002NUMA\u4f53\u7cfb\u4e0b\u4e0d\u8de8Node\u8fdc\u7a0b\u4f7f\u7528\u5185\u5b58\u3002<\/p>\n

3.<\/strong>\u00a0SIMD\uff08Single Instruction Multiple Data\uff09<\/strong><\/p>\n

\u4ece\u6700\u65e9\u7684mmx\/sse\u5230\u6700\u65b0\u7684avx2\uff0cSIMD\u7684\u80fd\u529b\u4e00\u76f4\u5728\u589e\u5f3a\u3002DPDK\u91c7\u7528\u6279\u91cf\u540c\u65f6\u5904\u7406\u591a\u4e2a\u5305\uff0c\u518d\u7528\u5411\u91cf\u7f16\u7a0b\uff0c\u4e00\u4e2a\u5468\u671f\u5185\u5bf9\u6240\u6709\u5305\u8fdb\u884c\u5904\u7406\u3002\u6bd4\u5982\uff0cmemcpy\u5c31\u4f7f\u7528SIMD\u6765\u63d0\u9ad8\u901f\u5ea6\u3002<\/p>\n

SIMD\u5728\u6e38\u620f\u540e\u53f0\u6bd4\u8f83\u5e38\u89c1\uff0c\u4f46\u662f\u5176\u4ed6\u4e1a\u52a1\u5982\u679c\u6709\u7c7b\u4f3c\u6279\u91cf\u5904\u7406\u7684\u573a\u666f\uff0c\u8981\u63d0\u9ad8\u6027\u80fd\uff0c\u4e5f\u53ef\u770b\u770b\u80fd\u5426\u6ee1\u8db3\u3002<\/p>\n

4.<\/strong>\u00a0\u4e0d\u4f7f\u7528\u6162\u901fAPI<\/strong><\/p>\n

\u8fd9\u91cc\u9700\u8981\u91cd\u65b0\u5b9a\u4e49\u4e00\u4e0b\u6162\u901fAPI\uff0c\u6bd4\u5982\u8bf4gettimeofday\uff0c\u867d\u7136\u572864\u4f4d\u4e0b\u901a\u8fc7vDSO<\/a>\u5df2\u7ecf\u4e0d\u9700\u8981\u9677\u5165\u5185\u6838\u6001\uff0c\u53ea\u662f\u4e00\u4e2a\u7eaf\u5185\u5b58\u8bbf\u95ee\uff0c\u6bcf\u79d2\u4e5f\u80fd\u8fbe\u5230\u51e0\u5343\u4e07\u7684\u7ea7\u522b\u3002\u4f46\u662f\uff0c\u4e0d\u8981\u5fd8\u8bb0\u4e86\u6211\u4eec\u572810GE\u4e0b\uff0c\u6bcf\u79d2\u7684\u5904\u7406\u80fd\u529b\u5c31\u8981\u8fbe\u5230\u51e0\u5343\u4e07\u3002\u6240\u4ee5\u5373\u4f7f\u662fgettimeofday\u4e5f\u5c5e\u4e8e\u6162\u901fAPI\u3002DPDK\u63d0\u4f9bCycles<\/a>\u63a5\u53e3\uff0c\u4f8b\u5982rte_get_tsc_cycles\u63a5\u53e3\uff0c\u57fa\u4e8eHPET\u6216TSC\u5b9e\u73b0\u3002<\/p>\n

\u5728x86-64\u4e0b\u4f7f\u7528RDTSC\u6307\u4ee4\uff0c\u76f4\u63a5\u4ece\u5bc4\u5b58\u5668\u8bfb\u53d6\uff0c\u9700\u8981\u8f93\u51652\u4e2a\u53c2\u6570\uff0c\u6bd4\u8f83\u5e38\u89c1\u7684\u5b9e\u73b0\uff1a<\/p>\n

static<\/span> inline<\/span> uint64_t<\/span>\r\nrte_rdtsc<\/span>(void<\/span>)<\/span><\/span>{\r\n      uint32_t<\/span> lo, hi;\r\n\r\n      __asm__ __volatile__ (\r\n                 \"rdtsc\"<\/span> : \"=a\"<\/span>(lo), \"=d\"<\/span>(hi)\r\n                 );\r\n\r\n      return<\/span> ((unsigned<\/span> long<\/span> long<\/span>)lo) | (((unsigned<\/span> long<\/span> long<\/span>)hi) << 32<\/span>);\r\n}\r\n<\/code><\/pre>\n
\u8fd9\u4e48\u5199\u903b\u8f91\u6ca1\u9519\uff0c\u4f46\u662f\u8fd8\u4e0d\u591f\u6781\u81f4\uff0c\u8fd8\u6d89\u53ca\u52302\u6b21\u4f4d\u8fd0\u7b97\u624d\u80fd\u5f97\u5230\u7ed3\u679c\uff0c\u6211\u4eec\u770b\u770bDPDK\u662f\u600e\u4e48\u5b9e\u73b0\uff1a<\/p>\n
static<\/span> inline<\/span> uint64_t<\/span>\r\nrte_rdtsc<\/span>(void<\/span>)<\/span><\/span>{\r\n\tunion<\/span> {<\/span>\r\n\t\tuint64_t<\/span> tsc_64;\r\n\t\tstruct<\/span> {<\/span>\r\n\t\t\tuint32_t<\/span> lo_32;\r\n\t\t\tuint32_t<\/span> hi_32;\r\n\t\t};\r\n\t} tsc;\r\n\r\n\tasm<\/span> volatile<\/span>(\"rdtsc\"<\/span> :\r\n\t\t     \"=a\"<\/span> (tsc.lo_32),\r\n\t\t     \"=d\"<\/span> (tsc.hi_32))<\/span><\/span>;\r\n\treturn<\/span> tsc.tsc_64;\r\n}\r\n<\/code><\/pre>\n
\u5de7\u5999\u7684\u5229\u7528C\u7684union\u5171\u4eab\u5185\u5b58\uff0c\u76f4\u63a5\u8d4b\u503c\uff0c\u51cf\u5c11\u4e86\u4e0d\u5fc5\u8981\u7684\u8fd0\u7b97\u3002\u4f46\u662f\u4f7f\u7528tsc\u6709\u4e9b\u95ee\u9898\u9700\u8981\u9762\u5bf9\u548c\u89e3\u51b3<\/code><\/p>\n
    \n
  1. CPU\u4eb2\u548c\u6027\uff0c\u89e3\u51b3\u591a\u6838\u8df3\u52a8\u4e0d\u7cbe\u786e\u7684\u95ee\u9898<\/li>\n
  2. \u5185\u5b58\u5c4f\u969c\uff0c\u89e3\u51b3\u4e71\u5e8f\u6267\u884c\u4e0d\u7cbe\u786e\u7684\u95ee\u9898<\/li>\n
  3. \u7981\u6b62\u964d\u9891\u548c\u7981\u6b62Intel Turbo Boost\uff0c\u56fa\u5b9aCPU\u9891\u7387\uff0c\u89e3\u51b3\u9891\u7387\u53d8\u5316\u5e26\u6765\u7684\u5931\u51c6\u95ee\u9898<\/li>\n<\/ol>\n
    5.<\/strong>\u00a0\u7f16\u8bd1\u6267\u884c\u4f18\u5316<\/strong><\/p>\n
      \n
    1. \u5206\u652f\u9884\u6d4b<\/li>\n<\/ol>\n
      \u73b0\u4ee3CPU\u901a\u8fc7pipeline<\/a>\u3001superscalar<\/a>\u63d0\u9ad8\u5e76\u884c\u5904\u7406\u80fd\u529b\uff0c\u4e3a\u4e86\u8fdb\u4e00\u6b65\u53d1\u6325\u5e76\u884c\u80fd\u529b\u4f1a\u505a\u5206\u652f\u9884\u6d4b<\/a>\uff0c\u63d0\u5347CPU\u7684\u5e76\u884c\u80fd\u529b\u3002\u9047\u5230\u5206\u652f\u65f6\u5224\u65ad\u53ef\u80fd\u8fdb\u5165\u54ea\u4e2a\u5206\u652f\uff0c\u63d0\u524d\u5904\u7406\u8be5\u5206\u652f\u7684\u4ee3\u7801\uff0c\u9884\u5148\u505a\u6307\u4ee4\u8bfb\u53d6\u7f16\u7801\u8bfb\u53d6\u5bc4\u5b58\u5668\u7b49\uff0c\u9884\u6d4b\u5931\u8d25\u5219\u9884\u5904\u7406\u5168\u90e8\u4e22\u5f03\u3002\u6211\u4eec\u5f00\u53d1\u4e1a\u52a1\u6709\u65f6\u5019\u4f1a\u975e\u5e38\u6e05\u695a\u8fd9\u4e2a\u5206\u652f\u662ftrue\u8fd8\u662ffalse\uff0c\u90a3\u5c31\u53ef\u4ee5\u901a\u8fc7\u4eba\u5de5\u5e72\u9884\u751f\u6210\u66f4\u7d27\u51d1\u7684\u4ee3\u7801\u63d0\u793aCPU\u5206\u652f\u9884\u6d4b\u6210\u529f\u7387\u3002<\/p>\n
      #pragma<\/span> once<\/span>\r\n\r\n#if<\/span> !__GLIBC_PREREQ(2, 3)<\/span>\r\n#    if<\/span> !define<\/span> __builtin_expect<\/span>\r\n#        define<\/span> __builtin_expect(x, expected_value) (x)<\/span>\r\n#    endif<\/span><\/span>\r\n#endif<\/span><\/span>\r\n\r\n#if<\/span> !defined(likely)<\/span>\r\n#define<\/span> likely(x) (__builtin_expect(!!(x), 1))<\/span>\r\n#endif<\/span><\/span>\r\n\r\n#if<\/span> !defined(unlikely)<\/span>\r\n#define<\/span> unlikely(x) (__builtin_expect(!!(x), 0))<\/span>\r\n#endif<\/span><\/span><\/code><\/pre>\n
        \n
      1. CPU Cache\u9884\u53d6<\/li>\n<\/ol>\n
        Cache Miss\u7684\u4ee3\u4ef7\u975e\u5e38\u9ad8\uff0c\u56de\u5185\u5b58\u8bfb\u9700\u898165\u7eb3\u79d2\uff0c\u53ef\u4ee5\u5c06\u5373\u5c06\u8bbf\u95ee\u7684\u6570\u636e\u4e3b\u52a8\u63a8\u9001\u7684CPU Cache\u8fdb\u884c\u4f18\u5316\u3002\u6bd4\u8f83\u5178\u578b\u7684\u573a\u666f\u662f\u94fe\u8868\u7684\u904d\u5386\uff0c\u94fe\u8868\u7684\u4e0b\u4e00\u8282\u70b9\u90fd\u662f\u968f\u673a\u5185\u5b58\u5730\u5740\uff0c\u6240\u4ee5CPU\u80af\u5b9a\u662f\u65e0\u6cd5\u81ea\u52a8\u9884\u52a0\u8f7d\u7684\u3002\u4f46\u662f\u6211\u4eec\u5728\u5904\u7406\u672c\u8282\u70b9\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7CPU\u6307\u4ee4\u5c06\u4e0b\u4e00\u4e2a\u8282\u70b9\u63a8\u9001\u5230Cache\u91cc\u3002<\/p>\n
        API\u6587\u6863\uff1ahttps:\/\/doc.dpdk.org\/api\/rte__prefetch_8h.html<\/a><\/p>\n
        static<\/span> inline<\/span> void<\/span> rte_prefetch0<\/span>(const<\/span> volatile<\/span> void<\/span> *p)<\/span><\/span>{\r\n\tasm<\/span> volatile<\/span> (\"prefetcht0 %[p]\"<\/span> : : [p] \"m\"<\/span> (*(const<\/span> volatile<\/span> char<\/span> *)p))<\/span><\/span>;\r\n}\r\n<\/code><\/pre>\n
        #if<\/span> !defined<\/span>(prefetch)\r\n#define<\/span> prefetch<\/span>(x) __builtin_prefetch<\/span>(x)\r\n#endif<\/span><\/code><\/pre>\n
        \u2026\u7b49\u7b49<\/p>\n
          \n
        1. \u5185\u5b58\u5bf9\u9f50<\/li>\n<\/ol>\n
          \u5185\u5b58\u5bf9\u9f50\u67092\u4e2a\u597d\u5904\uff1a<\/p>\n
          l \u907f\u514d\u7ed3\u6784\u4f53\u6210\u5458\u8de8Cache Line\uff0c\u97002\u6b21\u8bfb\u53d6\u624d\u80fd\u5408\u5e76\u5230\u5bc4\u5b58\u5668\u4e2d\uff0c\u964d\u4f4e\u6027\u80fd\u3002\u7ed3\u6784\u4f53\u6210\u5458\u9700\u4ece\u5927\u5230\u5c0f\u6392\u5e8f\u548c\u4ee5\u53ca\u5f3a\u5236\u5bf9\u9f50\u3002\u53c2\u8003\u300aData alignment: Straighten up and fly right<\/a>\u300b<\/p>\n
          #define __rte_packed __attribute__((__packed__<\/span>))\r\n<\/code><\/pre>\n
          l \u591a\u7ebf\u7a0b\u573a\u666f\u4e0b\u5199\u4ea7\u751fFalse sharing<\/a>\uff0c\u9020\u6210Cache Miss\uff0c\u7ed3\u6784\u4f53\u6309Cache Line\u5bf9\u9f50<\/p>\n
          #ifndef<\/span> CACHE_LINE_SIZE<\/span>\r\n#define<\/span> CACHE_LINE_SIZE 64<\/span>\r\n#endif<\/span><\/span>\r\n\r\n#ifndef<\/span> aligined<\/span>\r\n#define<\/span> aligined(a) __attribute__((__aligned__(a)))<\/span>\r\n#endif<\/span><\/span><\/code><\/pre>\n
            \n
          1. \u5e38\u91cf\u4f18\u5316<\/li>\n<\/ol>\n
            \u5e38\u91cf\u76f8\u5173\u7684\u8fd0\u7b97\u7684\u7f16\u8bd1\u9636\u6bb5\u5b8c\u6210\u3002\u6bd4\u5982C++11\u5f15\u5165\u4e86constexp\uff0c\u6bd4\u5982\u53ef\u4ee5\u4f7f\u7528GCC\u7684__builtin_constant_p\u6765\u5224\u65ad\u503c\u662f\u5426\u5e38\u91cf\uff0c\u7136\u540e\u5bf9\u5e38\u91cf\u8fdb\u884c\u7f16\u8bd1\u65f6\u5f97\u51fa\u7ed3\u679c\u3002\u4e3e\u4f8b\u7f51\u7edc\u5e8f\u4e3b\u673a\u5e8f\u8f6c\u6362<\/p>\n
            #define rte_bswap32(x<\/span>) ((uint32_t<\/span>)(__builtin_constant_p<\/span>(x<\/span>) ?\t\t\\\r\n\t\t\t\t   rte_constant_bswap32(x<\/span>) :\t\t\\\r\n\t\t\t\t   rte_arch_bswap32(x<\/span>)))\r\n<\/code><\/pre>\n
            \u5176\u4e2drte_constant_bswap32\u7684\u5b9e\u73b0<\/p>\n
            #define RTE_STATIC_BSWAP32(v) \\<\/span>\r\n\t((((uint32_t)(v)<\/span> &<\/span> UINT32_C(0x000000ff))<\/span> <<<\/span> 24<\/span>)<\/span> |<\/span> \\<\/span>\r\n\t (((uint32_t)(v)<\/span> &<\/span> UINT32_C(0x0000ff00))<\/span> <<<\/span>  8<\/span>)<\/span> |<\/span> \\<\/span>\r\n\t (((uint32_t)(v)<\/span> &<\/span> UINT32_C(0x00ff0000))<\/span> >><\/span>  8<\/span>)<\/span> |<\/span> \\<\/span>\r\n\t (((uint32_t)(v)<\/span> &<\/span> UINT32_C(0xff000000))<\/span> >><\/span> 24<\/span>))<\/span><\/code><\/pre>\n
            5\uff09\u4f7f\u7528CPU\u6307\u4ee4<\/p>\n
            \u73b0\u4ee3CPU\u63d0\u4f9b\u5f88\u591a\u6307\u4ee4\u53ef\u76f4\u63a5\u5b8c\u6210\u5e38\u89c1\u529f\u80fd\uff0c\u6bd4\u5982\u5927\u5c0f\u7aef\u8f6c\u6362\uff0cx86\u6709bswap\u6307\u4ee4\u76f4\u63a5\u652f\u6301\u4e86\u3002<\/p>\n
            static<\/span> inline<\/span> uint64_t<\/span> rte_arch_bswap64<\/span>(uint64_t<\/span> _x)<\/span><\/span>{\r\n\tregister<\/span> uint64_t<\/span> x = _x;\r\n\tasm<\/span> volatile<\/span> (\"bswap %[x]\"<\/span>\r\n\t\t      : [x] \"+r\"<\/span> (x)\r\n\t\t      )<\/span><\/span>;\r\n\treturn<\/span> x;\r\n}\r\n<\/code><\/pre>\n
            \u8fd9\u4e2a\u5b9e\u73b0\uff0c\u4e5f\u662fGLIBC\u7684\u5b9e\u73b0\uff0c\u5148\u5e38\u91cf\u4f18\u5316\u3001CPU\u6307\u4ee4\u4f18\u5316\u3001\u6700\u540e\u624d\u7528\u88f8\u4ee3\u7801\u5b9e\u73b0\u3002\u6bd5\u7adf\u90fd\u662f\u9876\u7aef\u7a0b\u5e8f\u5458\uff0c\u5bf9\u8bed\u8a00\u3001\u7f16\u8bd1\u5668\uff0c\u5bf9\u5b9e\u73b0\u7684\u8ffd\u6c42\u4e0d\u4e00\u6837\uff0c\u6240\u4ee5\u9020\u8f6e\u5b50\u524d\u4e00\u5b9a\u8981\u5148\u4e86\u89e3\u597d\u8f6e\u5b50\u3002<\/p>\n
            \u4e03\u3001DPDK\u751f\u6001<\/strong><\/p>\n
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            \u76ee\u524d\u751f\u6001\u5b8c\u5584\uff0c\u793e\u533a\u5f3a\u5927\uff08\u4e00\u7ebf\u5927\u5382\u652f\u6301\uff09\u7684\u5e94\u7528\u5c42\u5f00\u53d1\u9879\u76ee\u662fFD.io<\/a>\uff08The Fast Data Project\uff09\uff0c\u6709\u601d\u79d1\u5f00\u6e90\u652f\u6301\u7684VPP<\/a>\uff0c\u6bd4\u8f83\u5b8c\u5584\u7684\u534f\u8bae\u652f\u6301\uff0cARP\u3001VLAN\u3001Multipath\u3001IPv4\/v6\u3001MPLS\u7b49\u3002\u7528\u6237\u6001\u4f20\u8f93\u534f\u8baeUDP\/TCP\u6709TLDK<\/a>\u3002\u4ece\u9879\u76ee\u5b9a\u4f4d\u5230\u793e\u533a\u652f\u6301\u529b\u5ea6\u7b97\u6bd4\u8f83\u9760\u8c31\u7684\u6846\u67b6\u3002<\/p>\n
            \u817e\u8baf\u4e91\u5f00\u6e90\u7684F-Stack<\/a>\u4e5f\u503c\u5f97\u5173\u6ce8\u4e00\u4e0b\uff0c\u5f00\u53d1\u66f4\u7b80\u5355\uff0c\u76f4\u63a5\u63d0\u4f9b\u4e86POSIX\u63a5\u53e3\u3002<\/p>\n
            Seastar<\/a>\u4e5f\u5f88\u5f3a\u5927\u548c\u7075\u6d3b\uff0c\u5185\u6838\u6001\u548cDPDK\u90fd\u968f\u610f\u5207\u6362\uff0c\u4e5f\u6709\u81ea\u5df1\u7684\u4f20\u8f93\u534f\u8baeSeastar Native TCP\/IP Stack<\/a>\u652f\u6301\uff0c\u4f46\u662f\u76ee\u524d\u8fd8\u672a\u770b\u5230\u6709\u5927\u578b\u9879\u76ee\u5728\u4f7f\u7528Seastar\uff0c\u53ef\u80fd\u9700\u8981\u586b\u7684\u5751\u6bd4\u8f83\u591a\u3002<\/p>\n
            \u6211\u4eecGBN Gateway\u9879\u76ee\u9700\u8981\u652f\u6301L3\/IP\u5c42\u63a5\u5165\u505aWan\u7f51\u5173\uff0c\u5355\u673a20GE\uff0c\u57fa\u4e8eDPDK\u5f00\u53d1\u3002<\/p>\n
            \u95ee\u7b54<\/strong>
            \n            \u5982\u4f55\u68c0\u67e5\u7f51\u7edc\u8fde\u63a5\uff1f<\/a><\/p>\n
            \u76f8\u5173\u9605\u8bfb<\/strong>
            \n            \u628a\u62a5\u6587\u518d\u6254\u56de\u5185\u6838\uff0cDPDK\u8fd9\u6837\u505a<\/a>
            \n            \u7528DPDK rte_ring\u5b9e\u73b0\u591a\u8fdb\u7a0b\u95f4\u901a\u4fe1<\/a>
            \n            \u4f4e\u4e8e0.01%\u7684\u6781\u81f4Crash\u7387\u662f\u600e\u4e48\u505a\u5230\u7684\uff1f<\/a>
            \n            \u3010\u6bcf\u65e5\u8bfe\u7a0b\u63a8\u8350\u3011\u65b0\u52a0\u5761\u5357\u6d0b\u7406\u5de5\u5927\u5b66\u535a\u58eb\uff0c\u5e26\u4f60\u6df1\u5ea6\u5b66\u4e60NLP\u6280\u672f<\/a><\/p><\/blockquote>\n
            \u6b64\u6587\u5df2\u7531\u4f5c\u8005\u6388\u6743\u817e\u8baf\u4e91+\u793e\u533a\u53d1\u5e03\uff0c\u66f4\u591a\u539f\u6587\u8bf7\u70b9\u51fb<\/a><\/strong><\/p>\n
            \u641c\u7d22\u5173\u6ce8\u516c\u4f17\u53f7\u300c\u4e91\u52a0\u793e\u533a\u300d\uff0c\u7b2c\u4e00\u65f6\u95f4\u83b7\u53d6\u6280\u672f\u5e72\u8d27\uff0c\u5173\u6ce8\u540e\u56de\u590d1024 \u9001\u4f60\u4e00\u4efd\u6280\u672f\u8bfe\u7a0b\u5927\u793c\u5305\uff01<\/strong><\/p>\n
            \u6d77\u91cf\u6280\u672f\u5b9e\u8df5\u7ecf\u9a8c\uff0c\u5c3d\u5728\u4e91\u52a0\u793e\u533a<\/a>\uff01<\/p>\n<\/div>\n
            \u6d77\u91cf\u6280\u672f\u5b9e\u8df5\u7ecf\u9a8c\uff0c\u5c3d\u5728\u4e91\u52a0\u793e\u533a\uff01 https:\/\/cloud.tencent.com\/developer<\/div>\n","protected":false},"excerpt":{"rendered":"
            \u539f\u6587\u5730\u5740   \u4e00\u3001\u7f51\u7edcIO\u7684\u5904<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[118],"class_list":["post-4684","post","type-post","status-publish","format-standard","hentry","tag-02-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4684","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=4684"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4684\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=4684"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=4684"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=4684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
            Google\u5f00\u6e90\u7684cpu_features<\/a>\u53ef\u4ee5\u83b7\u53d6\u5f53\u524dCPU\u652f\u6301\u4ec0\u4e48\u7279\u6027\uff0c\u4ece\u800c\u5bf9\u7279\u5b9aCPU\u8fdb\u884c\u6267\u884c\u4f18\u5316\u3002\u9ad8\u6027\u80fd\u7f16\u7a0b\u6c38\u65e0\u6b62\u5883\uff0c\u5bf9\u786c\u4ef6\u3001\u5185\u6838\u3001\u7f16\u8bd1\u5668\u3001\u5f00\u53d1\u8bed\u8a00\u7684\u7406\u89e3\u8981\u6df1\u5165\u4e14\u4e0e\u65f6\u4ff1\u8fdb\u3002<\/p>\n