{"id":10006553,"date":"2022-09-20T19:55:56","date_gmt":"2022-09-20T11:55:56","guid":{"rendered":"https:\/\/ityet.com\/?p=10006553"},"modified":"2022-09-20T19:55:56","modified_gmt":"2022-09-20T11:55:56","slug":"%e6%80%a7%e8%83%bd%e9%80%8f%e6%98%8e%e6%8f%90%e5%8d%87-50%ef%bc%81smc-erdma-%e4%ba%91%e4%b8%8a%e8%b6%85%e5%a4%a7%e8%a7%84%e6%a8%a1%e9%ab%98%e6%80%a7%e8%83%bd%e7%bd%91%e7%bb%9c%e5%8d%8f%e8%ae%ae","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006553","title":{"rendered":"\u6027\u80fd\u900f\u660e\u63d0\u5347 50%\uff01SMC + ERDMA \u4e91\u4e0a\u8d85\u5927\u89c4\u6a21\u9ad8\u6027\u80fd\u7f51\u7edc\u534f\u8bae\u6808"},"content":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0\u65b0\u7684\u534f\u8bae\u6808\u662f\u4e0d\u662f\u91cd\u65b0\u53d1\u660e\u8f6e\u5b50\uff1f\u4e00\u4e2a\u534f\u8bae\u6808\u80fd\u5426\u89e3\u51b3\u6240\u6709\u95ee\u9898\uff1f\u9002\u914d\u6240\u6709\u573a\u666f\uff1f\u7f16\u8005\u6309\uff1a\u5f53\u524d\u5185\u6838\u7f51\u7edc\u534f\u8bae\u6808\u6709\u4ec0\u4e48\u95ee\u9898\uff1f\u65b0\u7684\u534f\u8bae\u6808\u662f\u4e0d\u662f\u91cd\u65b0\u53d1\u660e\u8f6e\u5b50\uff1f\u4e00\u4e2a\u534f\u8bae\u6808\u80fd\u5426\u89e3\u51b3\u6240\u6709\u95ee\u9898\uff1f\u9002\u914d\u6240\u6709\u573a\u666f\uff1f\u672c\u6587\u6574\u7406\u81ea\u00a02022 \u5e74\u963f\u91cc\u5df4\u5df4\u5f00\u6e90\u5f00\u653e\u5468\u6280\u672f\u6f14\u8bb2\uff0c\u8fd9\u91cc\u6211\u4eec\u5c06\u81ea\u5df1\u7684\u601d\u8003\u5206\u4eab\u51fa\u6765\uff0c\u548c\u5927\u5bb6\u4e00\u8d77\u4ea4\u6d41\u3002\u89c6\u9891\u56de\u653e\u5df2\u4e0a\u7ebf\u81f3\u9f99\u8725\u5b98\u7f51\uff08\u9996\u9875-\u52a8\u6001-\u89c6\u9891\uff09\uff0c\u6b22\u8fce\u5927\u5bb6\u89c2\u770b\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516723\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u672c\u6587\u4e3b\u8981\u5206\u4e3a\u4e09\u90e8\u5206\uff1a\u7b2c\u4e00\u90e8\u5206\u662f\u6211\u4eec\u4e3a\u4ec0\u4e48\u9700\u8981\u4e00\u4e2a\u65b0\u7684\u5185\u6838\u7f51\u7edc\u534f\u8bae\u6808\uff0c\u6211\u4eec\u662f\u4e0d\u662f\u5728\u91cd\u590d\u53d1\u660e\u8f6e\u5b50\uff1f\u7b2c\u4e8c\u90e8\u5206\u662f SMC + ERDMA \u7684\u539f\u7406\u3001\u4f18\u52a3\u7b49\u7b49\uff0c\u5feb\u901f\u4e3a\u5927\u5bb6\u4e86\u89e3 SMC \u6280\u672f\u3002\u7b2c\u4e09\u90e8\u5206\u662f SMC-R \u5728\u7f51\u6613 Curve \u5206\u5e03\u5f0f\u7cfb\u7edf\u7684\u5b9e\u8df5\u3002\u00a0\u4e00\u3001\u6211\u4eec\u4e3a\u4ec0\u4e48\u9700\u8981\u4e00\u4e2a\u65b0\u7684\u5185\u6838\u7f51\u7edc\u534f\u8bae\u6808\uff1f\u5f53\u524d\u5185\u6838\u7f51\u7edc\u534f\u8bae\u6808\u6709\u4ec0\u4e48\u95ee\u9898\uff1f\u65b0\u7684\u534f\u8bae\u6808\u662f\u4e0d\u662f\u91cd\u65b0\u53d1\u660e\u8f6e\u5b50\uff1f\u4e00\u4e2a\u534f\u8bae\u6808\u80fd\u5426\u89e3\u51b3\u6240\u6709\u95ee\u9898\uff1f\u9002\u914d\u6240\u6709\u573a\u666f\uff1f\u8fd9\u91cc\u6211\u4eec\u5c06\u81ea\u5df1\u7684\u601d\u8003\u5206\u4eab\u51fa\u6765\uff0c\u548c\u5927\u5bb6\u4e00\u8d77\u4ea4\u6d41\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516724\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u9996\u5148\u6211\u60f3\u8981\u629b\u51fa\u4e00\u4e2a\u89c2\u70b9\uff0c\u6ca1\u6709\u4e00\u4e2a\u7f51\u7edc\u6808\u662f\u4e07\u80fd\u7684\uff0c\u4e4b\u4e8e\u6b64\u6ca1\u6709\u94f6\u5f39\u3002\u8981\u8c08\u73b0\u72b6\uff0c\u79bb\u4e0d\u5f00\u80cc\u666f\uff1a\u7b2c\u4e00\u662f 100G\/400G \u7f51\u7edc\u7684\u666e\u53ca\uff0c\u6b64\u65f6 CPU \u662f\u74f6\u9888\u3002\u7b2c\u4e8c\u662f\u4e91\u3001\u89c4\u6a21\uff0c\u5f53\u524d\u8d8a\u6765\u8d8a\u591a\u7684\u4e1a\u52a1\u8fc1\u79fb\u5230\u4e91\u4e0a\uff0c\u4e91\u4e0a\u652f\u6301\u4f20\u7edf RDMA \u7f51\u5361\u6210\u672c\u5f88\u9ad8\u3002\u7b2c\u4e09\u662f DPU\uff0c\u786c\u4ef6\u5378\u8f7d\uff0c\u627f\u63a5\u7b2c\u4e00\u70b9\uff0cCPU \u6210\u4e3a\u74f6\u9888\u540e\uff0c\u662f\u5426\u53ef\u4ee5\u8ba9\u7f51\u7edc\u6808\u5c06\u8d8a\u6765\u8d8a\u591a\u7684\u903b\u8f91\u5378\u8f7d\u5230\u7f51\u5361\u548c DPU \u4e0a\uff0c\u8ba9 CPU \u505a\u66f4\u591a\u66f4\u91cd\u8981\u7684\u4e8b\u60c5\u3002\u00a0\u6211\u4eec\u5982\u4f55\u5e73\u8861\u541e\u5410\u548c\u65f6\u5ef6\uff1f\u6216\u8005\u8bf4\u5982\u4f55\u7528\u6700\u5c11\u7684 CPU \u8fbe\u5230\u76f8\u540c\u7684\u541e\u5410\uff0c\u5982\u4f55\u5c3d\u53ef\u80fd\u5730\u964d\u4f4e\u65f6\u5ef6\u3002\u9996\u5148 Linux \u5185\u6838\u7684\u7f51\u7edc\u6808\u503e\u5411\u4e8e\u541e\u5410\uff0c\u800c\u4e0d\u662f\u65f6\u5ef6\u3002\u63d0\u5347\u541e\u5410\u5f88\u91cd\u7684\u4e00\u70b9\u662f\uff0c\u964d\u4f4e\u62f7\u8d1d\u7684\u5f00\u9500\u3002\u5728\u5927\u5305\u541e\u5410\u7684\u573a\u666f\uff0c\u6211\u4eec\u5f88\u5bb9\u6613\u770b\u5230\u62f7\u8d1d\u5360\u636e\u4e86 CPU \u7684\u7edd\u5927\u90e8\u5206\u65f6\u95f4\u3002\u800c\u4e14\u5185\u6838\u7f51\u7edc\u6808\u7684 context switch \u5f00\u9500\uff0c\u62f7\u8d1d\u5f00\u9500\u4e5f\u4f1a\u589e\u52a0\u989d\u5916\u7684\u65f6\u5ef6\u3002\u00a0\u90a3\u4e48\u8fd9\u4e2a\u95ee\u9898\u53d8\u6210\u4e86\u9009\u62e9\u5728\u5185\u6838\u6001\u8fd8\u662f\u7528\u6237\u6001\u5b9e\u73b0\u4e00\u4e2a\u7f51\u7edc\u6808\uff1f\u6211\u60f3\u5f88\u591a\u5e94\u7528\uff0c\u6216\u8005\u8bf4\u4e91\u4e0a 99% \u4ee5\u4e0a\u7684\u5e94\u7528\u4f7f\u7528\u7684\u662f socket \u63a5\u53e3\uff0c\u5982\u679c\u4fb5\u5165\u6027\u6539\u9020\uff0c\u5bf9\u4e8e\u7528\u6237\u6001\u65b9\u6848\u6700\u5927\u7684\u58c1\u5792\u3002\u6bd4\u5982 DPDK \u7b49\uff0c\u6b64\u65f6\u4e0d\u4ec5\u4ec5\u662f\u6539\u9020\u6210\u672c\uff0c\u4e5f\u5305\u62ec\u4e86\u8fd0\u7ef4\u6210\u672c\u3001\u90e8\u7f72\u6210\u672c\u7b49\u7b49\u3002\u5f53\u7136\u7528\u6237\u6001\u4e5f\u53ef\u4ee5\u52ab\u6301 socket \u5b9e\u73b0\u7528\u6237\u6001\u534f\u8bae\u6808\uff0c\u4f46\u6b64\u65f6 zero copy \u7b49\u4f18\u52bf\u4e0d\u5728\u3002\u5e76\u4e14\u540c\u6837\u9700\u8981\u6539\u9020\uff0c\u6b64\u5904\u7684\u6539\u9020\u662f\u8fd0\u7ef4\u6539\u9020\uff0c\u8c03\u5ea6\u6539\u9020\u548c\u73af\u5883\u6539\u9020\uff0c\u8fd9\u4e5f\u662f\u989d\u5916\u7684\u6210\u672c\u3002\u6b64\u65f6\u7528\u6237\u6001\u7684\u4f18\u52bf\u4e5f\u4e0d\u518d\u663e\u8457\u3002\u00a0\u8f6f\u4ef6 vs \u786c\u4ef6\u5378\u8f7d\uff1f\u4e00\u5f00\u59cb Linux \u7f51\u7edc\u6808\uff0c\u4f8b\u5982 TCP \u534f\u8bae\u662f\u4ece\u7eaf\u8f6f\u4ef6\u5b9e\u73b0\u5230\u8d8a\u6765\u8d8a\u591a\u7684\u5c06\u529f\u80fd\u5378\u8f7d\u5230\u7f51\u5361\uff0c\u751a\u81f3 TOE \u5b8c\u5168\u5378\u8f7d\u5230\u7f51\u5361\u3002\u5982\u679c\u63d0\u5230\u5378\u8f7d\u5230\u7f51\u5361\uff0c\u662f\u4e0d\u662f\u53ef\u4ee5\u7528\u4e00\u79cd\u66f4\u52a0\u6210\u719f\u7684\u786c\u4ef6\u5378\u8f7d\u65b9\u6848\uff1f\u4e5f\u5c31\u662f RDMA\uff0c\u4e5f\u5c31\u662f\u4f20\u7edf\u4ee5\u592a\u7f51\u5361 vs RDMA \u7f51\u5361\uff0c\u90e8\u5206\u5378\u8f7d\u5230\u6210\u719f\u7684\u5b8c\u5168\u5378\u8f7d\u3002RDMA \u7f51\u7edc\u672c\u8eab\u6709\u89c4\u6a21\u7684\u9650\u5236\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u5c0f\u89c4\u6a21\u628a RDMA \u7f51\u7edc\u73a9\u5f97\u5f88\u597d\u3002\u90a3\u662f\u5426\u6709\u4e00\u79cd\u5927\u89c4\u6a21 RDMA \u7684\u80fd\u529b\u3002\u6211\u4eec\u73b0\u5728\u770b\u5230\u7684\u662f\u963f\u91cc\u4e91\u53d1\u5e03\u7684 ERDMA \u7f51\u7edc\uff0c\u4e00\u79cd\u666e\u60e0\u3001\u9ad8\u6027\u80fd\u3001\u5b8c\u5168\u517c\u5bb9 RDMA \u7684\u751f\u6001\u3002\u6211\u4eec\u501f\u52a9 SMC + ERDMA \u53ef\u4ee5\u5b9e\u73b0\u786c\u4ef6\u5378\u8f7d RDMA \u3001\u5927\u89c4\u6a21\u90e8\u7f72\uff0c\u4e8c\u8005\u76f8\u8f85\u76f8\u6210\u3002\u00a0\u5f00\u7bb1\u5373\u7528 vs \u5e94\u7528\u6539\u9020\uff1f\u4e0a\u9762\u5df2\u7ecf\u63d0\u5230\u4e00\u90e8\u5206\uff0c\u4e91\u4e0a 99% \u7684\u5e94\u7528\u4f7f\u7528\u7684\u662f socket \u63a5\u53e3\u7f16\u7a0b\uff0cTCP \u8fdb\u884c\u901a\u4fe1\u3002\u7edd\u5927\u90e8\u5206\u5e94\u7528\u4e0d\u53ef\u80fd\u6295\u5165\u5927\u91cf\u6210\u672c\u6539\u9020\u9002\u914d\u65b0\u7684\u7f51\u7edc\u6808\uff0c\u5176\u4e2d\u5305\u62ec\u5f00\u53d1\u6210\u672c\uff0c\u6d4b\u8bd5\u6210\u672c\uff08\u65b0\u7684\u534f\u8bae\u6808\u53ef\u80fd\u4f1a\u6709\u5404\u79cd\u95ee\u9898\uff09\uff0c\u90e8\u7f72\u548c\u8fd0\u7ef4\u6210\u672c\uff08\u4f8b\u5982 DPDK \u73af\u5883\uff0c\u989d\u5916\u8f6f\u4ef6\u5305\u7684\u7ef4\u62a4\uff09\u7b49\u3002\u6b64\u65f6\u8fd8\u4f1a\u8ba9\u5e94\u7528\u7262\u7262\u7ed1\u5b9a\u5728\u67d0\u4e2a\u7f51\u7edc\u6808\u4e4b\u4e0a\uff0c\u540e\u7eed\u8fc1\u79fb\uff0c\u6216\u8005\u9047\u5230\u73af\u5883\u4e0d\u652f\u6301\u7684\u60c5\u51b5\u4e0b\uff0c\u6210\u672c\u66f4\u9ad8\u3002\u6240\u4ee5\u6211\u4eec\u5206\u6790\u540e\uff0c\u5f97\u51fa\u7684\u7ed3\u8bba\u662f\uff0c\u5f53\u524d\u9700\u8981\u4e00\u4e2a\u517c\u5bb9 socket \u63a5\u53e3\uff0c\u53ef\u4ee5\u900f\u660e\u66ff\u6362\u4f20\u7edf TCP \u5e94\u7528\u7684\uff0c\u786c\u4ef6\u5378\u8f7d\u7684\u7f51\u7edc\u6808\u3002\u5229\u7528\u4e91\u4e0a\u5927\u89c4\u6a21\u90e8\u7f72\u3001DPU \u786c\u4ef6\u5378\u8f7d\u3001\u8fbe\u6210 100G\/400G \u7f51\u7edc\u7684\u5168\u65b0\u7f51\u7edc\u6808\u3002\u00a0\u4e8c\u3001\u5171\u4eab\u5185\u5b58\u901a\u4fe1 SMC\u6709\u4e00\u70b9\u5f88\u91cd\u8981\uff0c\u524d\u9762\u6211\u4eec\u6ca1\u6709\u8ba8\u8bba\uff0c\u4e5f\u5c31\u662f\u6240\u8c13\u7684\u6570\u636e\u901a\u4fe1\u6a21\u578b\u3002IPC \u8fdb\u7a0b\u95f4\u901a\u4fe1\uff0cTCP \u4e5f\u662f\u8fdb\u7a0b\u95f4\u901a\u4fe1\u7684\u4e00\u79cd\u3002\u6211\u4eec\u6309\u7167\u7b2c\u4e00\u6027\u539f\u7406\uff0c\u62c6\u5206\u6210\u4e0d\u540c\u7684\u4e0d\u53ef\u62c6\u5206\u7684\u6570\u636e\u901a\u4fe1\u6a21\u578b\u3002\u5bf9\u6bd4\u8fd9\u51e0\u79cd\u6a21\u578b\u6700\u4f73\u5b9e\u8df5\u4e0b\u53ef\u80fd\u7684\u6027\u80fd\u6570\u636e\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516725\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u5e38\u89c1\u7684\u662f\u57fa\u4e8e\u5305\u7684\u901a\u4fe1\u6a21\u578b\uff0c\u4f8b\u5982\u6700\u5178\u578b\u7684 TCP\uff0cTCP loopback \u6027\u80fd\u4e0d\u662f\u7279\u522b\u7406\u60f3\uff0c\u4f46\u662f\u6613\u7528\u6027\u6bcb\u5eb8\u7f6e\u7591\u3002\u6211\u4eec\u4e4b\u524d\u6709\u63d0\u5230\uff0c\u7edd\u5927\u591a\u6570\u5e94\u7528\u4f7f\u7528\u7684\u662f socket \u7f16\u7a0b\uff0c\u5176\u6b21\u662f\u5171\u4eab\u5185\u5b58\uff0c\u8fd9\u4e2a\u5728\u672c\u673a\u7ef4\u5ea6\u7684 IPC \u901a\u4fe1\u4e2d\uff0c\u4e5f\u662f\u4e00\u79cd\u975e\u5e38\u5e38\u89c1\u7684\u65b9\u5f0f\u3002\u5171\u4eab\u5185\u5b58\u5b9e\u73b0\u5343\u5dee\u4e07\u522b\uff0c\u4f46\u662f\u603b\u4f53\u6765\u770b\uff0c\u6027\u80fd\u8fdc\u8fdc\u8d85\u8fc7\u4e0a\u9762\u51e0\u79cd\u65b9\u5f0f\uff0c\u4f46\u662f\u6613\u7528\u6027\u582a\u5fe7\uff0c\u7b2c\u4e00\u662f\u63d0\u5230\u7684\u5b9e\u73b0\u65b9\u5f0f\u4e0d\u540c\u3001\u5e93\u4e0d\u540c\u3001\u63a5\u53e3\u4e0d\u540c\uff0c\u548c\u8bed\u8a00\u548c\u8fd0\u884c\u65f6\u7ed1\u5b9a\uff0c\u5bfc\u81f4\u5927\u90e8\u5206\u5171\u4eab\u5185\u5b58\u7684\u5b9e\u73b0\u4e0d\u5177\u5907\u8de8\u8d8a\u5e94\u7528\u7684\u666e\u9002\u6027\u3002\u6211\u4eec\u5feb\u901f\u56de\u987e\u4e00\u4e0b\u5171\u4eab\u5185\u5b58\u901a\u4fe1\u7684\u6a21\u578b\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516726\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u5de6\u8fb9\u7684\u56fe\u4e2d\uff0c\u4e0b\u9762\u4e0d\u540c\u989c\u8272\u7684\u65b9\u5757\u4ee3\u8868\u4e0d\u540c\u7684\u5185\u5b58\uff0c\u5206\u522b\u5206\u6210 sender \u548c reciver \u89d2\u8272\u3002\u9996\u5148\u53d1\u9001\u65b9\u5199\u5165\u6570\u636e\u5230\u8fd9\u4e00\u5757\u5171\u4eab\u5185\u5b58\uff0c\u4e4b\u540e\u901a\u8fc7\u67d0\u79cd\u65b9\u5f0f\uff0c\u901a\u77e5\u63a5\u6536\u65b9\u6570\u636e\u5199\u5230\u4e86\u54ea\u91cc\u3001\u504f\u79fb\u91cf\u662f\u591a\u5c11\uff0c\u5176\u6b21\u63a5\u6536\u65b9\u6309\u7167\u6e38\u6807\u4f4d\u7f6e\u8bfb\u53d6\u6216\u8005\u62f7\u8d1d\u8d70\u8fd9\u4e00\u5757\u5185\u5b58\u4e0a\u7684\u6570\u636e\uff0c\u4e4b\u540e\u901a\u77e5\u53d1\u9001\u65b9\uff0c\u672c\u5730\u5df2\u7ecf\u8bfb\u53d6\u5b8c\u6210\uff0c\u4e0b\u6b21\u5199\u6570\u636e\u53ef\u4ee5\u4ece\u67d0\u67d0\u4f4d\u7f6e\u5f00\u59cb\u3002\u8fd9\u6837\u4e00\u6b21\u7b80\u5355\u7684\u6570\u636e\u901a\u4fe1\u5c31\u5b8c\u6210\uff0c\u540c\u65f6\u662f zero copy\uff0c\u8fd9\u91cc\u662f\u5355\u5411\uff0c\u5982\u679c\u662f\u53cc\u5411\uff0c\u53ea\u9700\u8981\u7ef4\u62a4\u4e24\u4e2a\u5185\u5b58\u533a\u57df\u5373\u53ef\u3002\u90a3\u4e48\u662f\u5426\u6709\u4e00\u79cd\u6280\u672f\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u642c\u8fd0\u5185\u5b58\uff0c\u8ba9\u4e0b\u9762\u4e24\u4e2a\u65b9\u6846\u7684\u5185\u5b58\u4fdd\u6301\u540c\u6b65\uff0c\u4ece\u5355\u673a\u5171\u4eab\u5185\u5b58\u5230\u8fdc\u7aef\u5171\u4eab\u5185\u5b58\uff1f\u7b54\u6848\u4e5f\u5c31\u662f\u4e4b\u524d\u63d0\u5230\u7684 RDMA\uff0cRDMA \u672c\u8eab\u5c31\u662f\u8fdc\u7aef\u76f4\u63a5\u5185\u5b58\u65b9\u6848\u7684\u7f29\u5199\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516727\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u524d\u9762 4 \u6b65\u6211\u4eec\u53ef\u4ee5\u5b8c\u6210\u672c\u5730\u7684\u5171\u4eab\u5185\u5b58\u901a\u4fe1\uff0c\u57fa\u4e8e RDMA\uff0c\u6211\u4eec\u7684\u6570\u636e\u6a21\u578b\u53ea\u9700\u8981\u4e00\u4e2a\u6bd4\u8f83\u5c0f\u7684\u6539\u52a8\uff0c\u4e5f\u5c31\u662f\u5728\u7b2c\u4e8c\u6b65\uff0c\u901a\u8fc7 RDMA write \u5b9e\u73b0\u5185\u5b58\u4ece\u672c\u5730\u540c\u6b65\u5230\u8fdc\u7aef\u3002\u8fd9\u6837\u672c\u5730\u548c\u8fdc\u7aef\u7ef4\u62a4\u5185\u5b58\u4e0a\u7684\u6570\u636e\u53ef\u4ee5\u4fdd\u6301\u4e00\u81f4\uff0c\u540c\u65f6\u901a\u8fc7 RDMA send \u4f5c\u4e3a\u6d88\u606f\u901a\u77e5\u673a\u5236\u3001\u901a\u77e5\u6e38\u6807\u66f4\u65b0\u3002\u540c\u65f6\u4e5f\u53ef\u4ee5\u5b9e\u73b0 zero copy \u786c\u4ef6\u5378\u8f7d\u3002\u57fa\u4e8e\u4e0a\u9762\u7684\u5206\u6790\uff0c\u6211\u4eec\u662f\u4e0d\u662f\u53ef\u4ee5\u57fa\u4e8e\u5171\u4eab\u5185\u5b58\u540c\u65f6\u517c\u5bb9 socket\uff0c\u57fa\u4e8eRDMA \u786c\u4ef6\u5378\u8f7d\u5b9e\u73b0\u8fd9\u6837\u4e00\u4e2a\u53ef\u80fd\u9ad8\u6027\u80fd\u7684\u7f51\u7edc\u6808\u5462\uff1f\u7b54\u6848\u662f\u80af\u5b9a\u7684\uff0c\u901a\u8fc7 SMC + ERDMA \u6784\u5efa\u4e91\u4e0a\u9ad8\u6027\u80fd\u7f51\u7edc\u6808\uff0c\u4e3a\u4ec0\u4e48\u8bf4 SMC + ERDMA \u53ef\u4ee5\u6ee1\u8db3\u4e0a\u9762\u6211\u4eec\u7684\u7ed3\u8bba\u5462\uff1f\u9996\u5148\uff0c\u6211\u4eec\u5feb\u901f\u4e86\u89e3\u4e00\u4e0b SMC\u3002\u00a0<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516728\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>SMC \u662f IBM \u5f00\u6e90\u5230 Linux \u4ee3\u7801\u4e2d\uff0c\u540c\u65f6 IBM \u4e5f\u4e00\u540c\u63d0\u51fa\u4e86 IETF RFC 7609\uff0c\u4f5c\u4e3a\u63cf\u8ff0 SMC-R \u534f\u8bae\u662f\u5982\u4f55\u5b9e\u73b0\u7684\u3002\u9996\u5148\u5728\u4e0a\u6e38\u793e\u533a\u4e2d\uff0c\u9f99\u8725\u793e\u533a\u4e3a\u4e0a\u6e38\u8d21\u732e\u7684\u8865\u4e01\u6570\u6392\u7b2c\u4e8c\uff0c\u5176\u6b21\uff0cSMC \u672c\u8eab\u4e5f\u662f\u4e00\u79cd\u534f\u8bae\uff0cLinux \u4e0b\u4e3a AF_SMC\uff0c\u53ef\u4ee5\u76f4\u63a5\u5728 socket \u4e2d\u5236\u5b9a\u4f7f\u7528\uff0c\u6ca1\u6709\u5176\u4ed6\u7279\u6b8a\u7684 hack \u6216\u8005 tricky \u7684\u5b9e\u73b0\uff0c\u548c TCP \u7b49\u4ef7\u3002\u6a21\u578b\u91c7\u7528\u4e86\u5171\u4eab\u5185\u5b58\u6280\u672f\uff0c\u7ed3\u5408 RDMA \u53ef\u4ee5\u5b9e\u73b0\u4e00\u6b21\u62f7\u8d1d\uff0c\u786c\u4ef6\u5378\u8f7d\u7684\u6027\u80fd\u3002\u540c\u65f6\u6700\u4e3a\u91cd\u8981\u7684\u662f\uff0cSMC \u672c\u8eab\u662f\u4e00\u79cd\u6df7\u5408\u534f\u8bae\uff0cSMC \u534f\u8bae\u672c\u8eab\uff0c\u9700\u8981\u501f\u52a9\u67d0\u79cd\u66f4\u901a\u7528\u7684\u534f\u8bae\u5efa\u7acb RDMA \u94fe\u63a5\uff0c\u540c\u65f6\u8fd8\u9700\u8981\u63d0\u4f9b\u4e00\u79cd fallback \u56de\u9000\u673a\u5236\uff0c\u5982\u679c\u6ca1\u6709 RDMA \u652f\u6301\uff0c\u53ef\u4ee5\u900f\u660e\u56de\u9000\u5230 TCP\u3002\u6700\u540e\uff0cSMC \u517c\u5bb9 socket\uff0c\u53ef\u4ee5\u900f\u660e\u66ff\u6362\u6240\u6709\u7684 TCP \u5e94\u7528\uff0c\u5e94\u7528\u65e0\u9700\u6539\u9020\uff0c\u4e5f\u65e0\u9700\u914d\u7f6e\uff0c\u5373\u53ef\u4eab\u53d7 SMC \u5e26\u6765\u7684\u6027\u80fd\u52a0\u901f\u3002\u901a\u8fc7\u4e0a\u8ff0\u7279\u6027\uff0c\u6700\u5927\u5316\u517c\u987e\u6027\u80fd\u548c\u751f\u6001\u3002SMC \u53ef\u4ee5\u5728\u4e91\u4e0a\u9ad8\u6027\u80fd\u548c\u5927\u89c4\u6a21\u90e8\u7f72\uff0c\u4e5f\u79bb\u4e0d\u5f00\u963f\u91cc\u4e91\u7684 ERDMA\u3002ERDMA \u5b8c\u5168\u517c\u5bb9 RDMA \u751f\u6001\uff0c\u517c\u5bb9 verbs \u63a5\u53e3\uff0cverbs \u5e94\u7528\u53ef\u4ee5\u65e0\u9700\u6539\u9020\u3002\u540c\u65f6\u4e91\u4e0a\u7684 ERDMA \u5177\u5907\u8d85\u5927\u89c4\u6a21\u90e8\u7f72\u7684\u80fd\u529b\uff0c\u89e3\u51b3\u4e86\u4f20\u7edf RDMA \u7f51\u7edc\u7684\u90e8\u7f72\u96be\u9898\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516729\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>SMC \u4f7f\u7528 verbs \u63a5\u53e3\uff0c\u53ef\u4ee5\u5728\u4e91\u4e0a\u76f4\u63a5\u4f7f\u7528 ERDMA\uff0c\u4ece\u800c\u5b9e\u73b0\u786c\u4ef6\u5378\u8f7d\uff0c\u9ad8\u6027\u80fd\u7684\u7f51\u7edc\u6808 SMC \u662f\u5982\u4f55\u4f7f\u7528 RDMA \u7684\uff1f<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516731\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>SMC \u9996\u5148\u4f7f\u7528 TCP \u5e26\u5b8c\u5efa\u8fde\uff0c\u4f7f\u6574\u4e2a RDMA \u94fe\u8def\u53ef\u7528\uff0c\u6b64\u65f6 TCP \u94fe\u63a5\u53ef\u4ee5\u7528\u4e8e\u56de\u9000\uff0c\u4efb\u4f55 RDMA \u7684\u95ee\u9898\u90fd\u53ef\u4ee5\u987a\u5229\u56de\u9000\u5230 TCP\uff0c\u786e\u4fdd SMC \u94fe\u63a5\u7684\u53ef\u7528\u3002\u5176\u6b21 RDMA \u8d1f\u8d23\u6574\u4e2a\u6570\u636e\u7684\u901a\u4fe1\uff0c\u5728\u5185\u6838\u6001\u662f zero copy\u3002SMC \u6709\u4e00\u6b21\u7528\u6237\u6001-\u5185\u6838\u6001\u62f7\u8d1d\u3002RDMA \u6280\u672f\u7684\u53e6\u4e00\u4e2a\u95ee\u9898\u662f\u94fe\u63a5\u7684\u89c4\u6a21\uff0c\u7279\u522b\u662f RC \u6a21\u5f0f\u4e0b\uff0c\u94fe\u63a5\u7684\u89c4\u6a21\u4e0d\u662f\u5f88\u5927\u3002SMC \u901a\u8fc7 linkgroup\uff0c\u5c06 N \u4e2a\u94fe\u63a5\u6620\u5c04\u5230 1 \u4e2a\u6216\u591a\u4e2a RDMA QP \u4e4b\u4e0a\uff0c\u5145\u5206\u590d\u7528 QP \u8d44\u6e90\uff0c\u4e5f\u52a0\u5feb\u4e86\u63a7\u5236\u8def\u5f84\u521b\u5efa QP \u6162\u7684\u95ee\u9898\uff0c\u6700\u91cd\u8981\u4e5f\u5177\u5907\u4e86 linkgroup \u591a QP \u7684\u5bb9\u707e\u9ad8\u53ef\u7528\u7684\u80fd\u529b\u3002\u6700\u540e SMC \u652f\u6301 RoCE v1\/v2\uff0c\u9f99\u8725\u7248\u672c\u8fd8\u652f\u6301 ERDMA\uff0c\u786e\u4fdd SMC \u65e2\u53ef\u4ee5\u4f7f\u7528\u5728\u4e91\u4e0a\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5728\u6570\u636e\u4e2d\u5fc3\u5185\u90e8\u3002\u6211\u4eec\u591a\u6b21\u63d0\u5230\u4e86 SMC \u57fa\u4e8e TCP \u94fe\u63a5\u5efa\u8fde\uff0c\u90a3\u4e48 SMC \u662f\u600e\u4e48\u505a\u7684\uff1f<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516732\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u9996\u5148 SMC \u672c\u8eab\u662f\u4e00\u79cd\u6df7\u5408\u534f\u8bae\uff0c\u534f\u8bae\u5e95\u5c42\u5305\u62ec TCP \u548c RDMA\uff0c\u5145\u5206\u8fd0\u7528 TCP \u901a\u7528\u3001\u517c\u5bb9\u3001\u53ef\u8fbe\u7387\u9ad8\u3001RDMA \u9ad8\u6027\u80fd\u7684\u4f18\u52bf\u3002\u540c\u65f6\u8fd9\u4e00\u6761 TCP \u94fe\u63a5\u4e5f\u53ef\u4ee5\u5e2e\u52a9 RDMA \u4e0d\u53ef\u7528\u6216\u8005\u5efa\u8fde\u9519\u8bef\u540e\uff0c\u5feb\u901f\u56de\u9000\u5230 TCP \u6a21\u5f0f\uff0c\u5bf9\u4e8e\u5e94\u7528\u5b8c\u5168\u900f\u660e\u3002SMC \u901a\u8fc7 TCP SYN \u5305\u4e2d\u7684\u7279\u5b9a\u7684 TCP options \u6807\u6ce8\u662f\u5426\u652f\u6301 SMC \u80fd\u529b\u3002\u5982\u679c\u652f\u6301\u4f1a\u63a5\u4e0b\u6765\u4ea4\u6362 RDMA \u5efa\u8fde\u6240\u9700\u7684\u4fe1\u606f\uff0cSMC \u517c\u5bb9 socket \u4e4b\u540e\uff0c\u662f\u5982\u4f55\u900f\u660e\u66ff\u6362 TCP\uff1f<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516733\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u9996\u5148 AF_SMC \u548c AF_INET \u662f\u5728\u540c\u4e00\u5c42\u7ea7\u3002\u5bf9\u5916\u66b4\u9732\u7684\u63a5\u53e3\u548c\u6027\u80fd\u5b8c\u5168\u4e00\u81f4\uff0c\u5e94\u7528\u53ef\u4ee5\u5728\u521b\u5efa socket \u7684\u65f6\u5019\u76f4\u63a5\u4f7f\u7528 AF_SMC\uff0c\u4e0e\u4f7f\u7528 TCP \u65f6\u5b8c\u5168\u4e00\u81f4\u3002\u5e94\u7528\u4e0d\u4ec5\u53ef\u4ee5\u663e\u793a\u7684\u5236\u5b9a AF_SMC\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528 smc_run \u547d\u4ee4\uff0c\u5feb\u901f\u5c06 TCP \u66ff\u6362\u6210 SMC\uff0c\u5982\u5de6\u56fe\u6240\u793a\uff0c\u4efb\u4f55\u5e94\u7528\u90fd\u53ef\u4ee5\u900f\u660e\u6539\u9020\uff0c\u65e0\u9700\u4efb\u4f55\u9002\u914d\uff0cSMC \u6a21\u5757\u4e5f\u4f1a\u81ea\u52a8\u8f7d\u5165\u5230\u5185\u6838\u3002\u5176\u6b21\u652f\u6301 netns \u7ef4\u5ea6\u7684\u66ff\u6362\uff0c\u652f\u6301\u5bb9\u5668\u573a\u666f\u4e0b\u7684\u52a0\u901f\u3002\u4e5f\u652f\u6301 eBPF \u7684\u7b56\u7565\u66ff\u6362\uff0c\u901a\u8fc7 eBPF \u7f16\u5199\u89c4\u5219\u5339\u914d\u6240\u9700\u7684\u5e94\u7528\u7279\u5f81\uff0c\u9009\u62e9\u6027\u7684\u66ff\u6362\u6210 SMC\u3002\u5bf9\u4e8e\u4e00\u4e9b\u4e0d\u91cd\u8981\uff0c\u4e0d\u60f3\u8981\u5360\u7528 SMC \u8d44\u6e90\uff0c\u6216\u8005\u4e0d\u9002\u5408 SMC \u7684\u573a\u666f\uff0c\u53ef\u4ee5\u4f7f\u7528\u8fd9\u79cd\u65b9\u5f0f\u3002SMC \u56de\u9000\u673a\u5236\uff0c\u4e5f\u662f SMC \u4e3a\u4ec0\u4e48\u80fd\u591f\u66ff\u6362 TCP \u91cd\u8981\u7684\u4e00\u4e2a\u7279\u6027\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516734\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u4e0a\u56fe\u5de6\u8fb9\u53ef\u4ee5\u770b\u5230\uff0cSMC \u9996\u5148\u521b\u5efa TCP \u94fe\u63a5\uff0c\u7ecf\u8fc7 TCP \u7684\u63e1\u624b\u540e\uff0c\u624d\u4f1a\u8fdb\u884c SMC \u63e1\u624b\u3002\u5982\u4e4b\u524d\u6240\u63d0\u5230\u7684\u662f\uff0cSMC \u662f\u6df7\u5408\u534f\u8bae\uff0c\u5728 RDMA \u5efa\u8fde\u5931\u8d25\u540e\uff0c\u53ef\u4ee5\u5feb\u901f\u900f\u660e\u7684\u5207\u56de\u5230 TCP\u3002\u540c\u65f6\u4e5f\u63d0\u4f9b\u4e86\u5404\u79cd\u9519\u8bef\u7801\uff0c\u5e2e\u52a9\u5e94\u7528\u6392\u67e5\u95ee\u9898\uff0c\u4f8b\u5982 RDMA \u7f51\u5361\u95ee\u9898\uff0c\u8fd8\u662f\u8d44\u6e90\u95ee\u9898\u7b49\u3002\u8c08\u4e86\u8fd9\u4e48\u591a SMC \u81ea\u8eab\u7684\u7279\u6027\uff0c\u90a3\u4e48 SMC \u7684\u6027\u80fd\u5982\u4f55\uff1f\u4e0b\u9762\u7684\u6d4b\u8bd5\u662f\u5728\u963f\u91cc\u4e91\u4e0a ERDMA \u7f51\u5361\u548c SMC \u5bf9\u6bd4 TCP \u7684\u6027\u80fd\u3002\u00a0<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516735\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u4f8b\u5982\u5e38\u89c1\u7684 netperf microbenchmark \u6709\u4e00\u500d\u4ee5\u4e0a\u7684\u6027\u80fd\u63d0\u5347\u3002Redis \u548c Netty \u8fd9\u79cd\u5e38\u89c1\u7684\u57fa\u7840\u7ec4\u4ef6\u6709 30% \u5230 50% \u7684 QPS \u63d0\u5347\uff0c\u65f6\u5ef6\u4e5f\u663e\u8457\u4e0b\u964d\u3002NGINX \u4e5f\u6709 40% \u5de6\u53f3\u7684\u6027\u80fd\u63d0\u5347\u3002\u8fd9\u4e9b\u6027\u80fd\u63d0\u5347\uff0c\u90fd\u662f\u5728\u5e94\u7528\u65e0\u9700\u4efb\u4f55\u6539\u9020\uff0c\u900f\u660e\u66ff\u6362\u6210 SMC \u4e0b\u8fdb\u884c\u7684\u6d4b\u8bd5\u3002\u63a5\u4e0b\u6765\u6211\u4eec\u804a\u4e00\u4e0b\u6211\u4eec\u9f99\u8725\u793e\u533a\u5728 SMC \u4e0a\u6240\u505a\u7684\u5de5\u4f5c\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516736\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>2021 \u5e74 11 \u6708\u5f00\u59cb\u5728\u793e\u533a\u5bc6\u5207\u53c2\u4e0e\u5f00\u53d1\u548c\u7a33\u5b9a\u6027\u5de5\u4f5c\uff0c\u5f53\u524d\u8d21\u732e\u5171\u8ba1 70 \u591a\u4e2a\u8865\u4e01\uff0c\u6392\u5728 IBM \u4e4b\u540e\u4e3a\u7b2c\u4e8c\u3002\u9996\u5148\u6211\u4eec\u4ece\u5934\u5230\u5c3e\u4f18\u5316\u4e86 SMC \u7684\u6027\u80fd\uff0c\u5305\u62ec\u77ed\u94fe\u63a5\u6027\u80fd\uff0c\u5305\u62ec\u541e\u5410\u548c\u4e00\u4e9b syscall\uff0cCQ \u4e2d\u65ad\u6253\u6563\u7b49\u4f18\u5316\uff0c\u6700\u7ec8 microbenchmark \u7efc\u5408\u6027\u80fd\u63d0\u5347\u4e86 357%\uff0c\u8fd9\u91cc\u662f\u5bf9\u6bd4\u7684 SMC \u4e4b\u524d\u7684\u7248\u672c\uff0c\u5bf9\u6bd4 TCP \u53ef\u4ee5\u53c2\u8003\u521a\u624d\u7684\u6570\u636e\u3002\u5176\u6b21\u662f\u66f4\u591a\u7684\u573a\u666f\u652f\u6301\uff0c\u5305\u62ec\u4e91\u539f\u751f\u3001ERDMA\u3001\u5bb9\u5668\u7f51\u7edc\u7b49\u7b49\uff0c\u62d3\u5bbd\u4e86\u4e0a\u6e38\u793e\u533a SMC \u7684\u4f7f\u7528\u573a\u666f\u3002\u6700\u91cd\u8981\u7684\u662f\uff0c\u6781\u5927\u5730\u63d0\u5347\u4e86\u7a33\u5b9a\u6027\uff0c\u6211\u4eec\u4e00\u76f4\u5728\u6301\u7eed\u770b\u62a4\u4e0a\u6709\u793e\u533a\uff0c\u89e3\u51b3\u4e86\u6570\u5341\u4e2a panic \u95ee\u9898\uff0c\u5f7b\u5e95\u89e3\u51b3\u4e86\u9057\u7559\u7684 link \u548c linkgroup \u95ee\u9898\uff0c\u540c\u65f6\u4e5f\u5728\u6301\u7eed\u770b\u62a4 SMC\u3002\u9f99\u8725\u793e\u533a\u6211\u4eec\u6709 CI\/CD \u6301\u7eed\u4e0d\u65ad\u7684\u6d4b\u8bd5\uff0c\u80fd\u591f\u6210\u4e3a\u4e00\u4e2a\u4ea7\u54c1\u7ea7\u522b\u7684\u534f\u8bae\u6808\u3002\u5927\u5bb6\u53ef\u4ee5\u8bbf\u95ee\u6211\u4eec\u7684\u4ed3\u5e93\uff08\u5730\u5740\u89c1\u6587\u672b\uff09\uff0c\u4f7f\u7528 HPN \u4e2d\u6211\u4eec\u4e0d\u65ad\u4f18\u5316\u7684 SMC \u7248\u672c\u3002\u00a0<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516737\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u63a5\u4e0b\u6765\u6211\u4eec\u8c08\u4e00\u8c08 SMC \u7684\u672a\u6765\u3002\u56de\u5230\u5206\u4eab\u7684\u5f00\u59cb\uff0cSMC \u540c\u6837\u4e5f\u4e0d\u662f\u94f6\u5f39\u3002SMC \u57fa\u4e8e RDMA \u6280\u672f\uff0c\u672c\u8eab\u4e5f\u6709 RDMA \u5f15\u5165\u7684\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\u3002\u7b2c\u4e00\u662f\u5185\u5b58\u6d88\u8017\uff0cSMC \u672c\u8eab\u9700\u8981\u4e00\u81f4\u7ef4\u62a4\u4e00\u5757\u6bd4\u8f83\u5927\u7684\u8fde\u7eed\u5185\u5b58\u533a\u57df\uff0c\u7528\u6765\u5b9e\u73b0\u5171\u4eab\u5185\u5b58\u901a\u4fe1\uff0c\u5185\u5b58\u6d88\u8017\u663e\u8457\u5927\u4e8e TCP\u3002\u5176\u6b21\u662f SMC \u7684\u5efa\u8fde\u6027\u80fd\uff0c\u8fd8\u662f\u4f1a\u53d7\u5236\u4e8e RDMA RC \u6a21\u5f0f\u7684\u5efa\u8fde\u6027\u80fd\uff0c\u8fd9\u4e00\u5757\u6211\u4eec\u4f1a\u6301\u7eed\u4e0d\u65ad\u7684\u4f18\u5316\uff0c\u76f8\u5173\u4f18\u5316\u6211\u4eec\u4f1a\u9646\u7eed\u63a8\u9001\u5230\u793e\u533a\u3002\u5176\u6b21\u662f\u7a33\u5b9a\u6027\uff0cSMC \u4e0d\u540c\u4e8e TCP \u5728\u4e1a\u754c\u5e7f\u6cdb\u4f7f\u7528\u591a\u5e74\u3002\u6709\u5f88\u591a\u95ee\u9898\u6ca1\u6709\u88ab\u53d1\u73b0\uff0c\u6211\u4eec\u5f53\u524d\u4e5f\u5728\u501f\u52a9 SMC CI\/CD \u5e2e\u52a9\u6211\u4eec\u53d1\u73b0\u95ee\u9898\u3002\u4e09\u3001SMC-R \u5728\u7f51\u6613 Curve \u5b58\u50a8\u7cfb\u7edf\u7684\u5b9e\u8df5<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516738\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u9996\u5148\u4ecb\u7ecd\u4e00\u4e0b Curve\u3002Curve \u662f\u4e00\u4e2a\u5f00\u6e90\u5206\u5e03\u5f0f\u5b58\u50a8\u7cfb\u7edf\uff0c\u53ef\u5bf9\u63a5 OpenStack \u5e73\u53f0\u4e3a\u4e91\u4e3b\u673a\u63d0\u4f9b\u9ad8\u6027\u80fd\u5757\u5b58\u50a8\u670d\u52a1\uff0c\u53ef\u5bf9\u63a5 Kubernetes \u4e3a\u5176\u63d0\u4f9b\u6301\u4e45\u5316\u5b58\u50a8\u5377\uff0c\u53ef\u5bf9\u63a5 PolarFS \u4f5c\u4e3a\u4e91\u539f\u751f\u6570\u636e\u5e93\u7684\u9ad8\u6027\u80fd\u5b58\u50a8\u5e95\u5ea7\u3002Curve \u5728\u6027\u80fd\u3001\u8fd0\u7ef4\u3001\u7a33\u5b9a\u6027\u3001\u5de5\u7a0b\u5b9e\u8df5\u8d28\u91cf\u4e0a\u90fd\u4f18\u4e8e Ceph\u3002\u4e0b\u9762\u4ecb\u7ecd Curve \u7684\u7f51\u7edc\u901a\u4fe1\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516739\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u901a\u4fe1\u8fc7\u7a0b\u4e3a\u7531 leader \u5411 follower \u53d1\u8d77 RPC \u8fdb\u884c\u6570\u636e\u62f7\u8d1d\u3002\u7279\u70b9\u662f\uff1a\u7f51\u7edc\u901a\u4fe1\u9891\u7e41\u3001\u7f51\u7edc\u901a\u9053\u7a33\u5b9a\u3001\u7f51\u7edc\u4f20\u8f93\u65f6\u5ef6\u5c0f\u3001RPC \u65f6\u5ef6\u5360\u6bd4\u4e0d\u4f4e\u3002\u56e0\u6b64\u6211\u4eec\u8c03\u7814\u4e86\u51e0\u79cd\u7f51\u7edc\u52a0\u901f\u9009\u578b\uff1a\u5176\u4e2d SMC-R \u53ef\u4ee5\u5b9e\u73b0\u900f\u660e\u66ff\u6362\uff0c\u65e0\u4fb5\u5165\uff0c\u5e76\u4e14\u63d0\u4f9b\u8f83\u597d\u7684\u6027\u80fd\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516740\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u6211\u4eec\u4f7f\u7528 SMC-R \u6539\u9020\u4e86 Curve \u5e76\u4f7f\u80fd\u3002\u540c\u65f6\u6269\u5c55\u4e86\u9ed1\u540d\u5355\u3001\u8d44\u6e90\u76d1\u63a7\u548c\u8bfb\u53d6\u901f\u5ea6\u76d1\u63a7\u7b49\u80fd\u529b\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516741\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u6211\u4eec\u4f7f\u7528 Curve E2E \u6d4b\u8bd5\uff0c\u5728 3 Volume \u00a0256 depth randwrite case \u4e0b\uff0c\u5bf9\u6bd4 TCP \u63d0\u5347\u4e86 18.5% \u7684\u6027\u80fd\u3002\u6700\u540e\uff0c\u4ee5\u4e0a\u4e3a\u5927\u5bb6\u4ecb\u7ecd\u4e86\u6211\u4eec\u4e3a\u4ec0\u4e48\u9700\u8981 SMC\uff0cSMC \u7684\u539f\u7406\u548c\u6027\u80fd\u4ee5\u53ca SMC \u5728\u7f51\u6613 Curve \u7684\u6700\u4f73\u5b9e\u8df5\u3002\u5bf9\u4e8e SMC \u800c\u8a00\u6700\u91cd\u8981\u7684\u662f\u793e\u533a\u548c\u751f\u6001\uff0c\u5728\u6b64\u6b22\u8fce\u5927\u5bb6\u4f7f\u7528\u5e76\u53c2\u4e0e\u9f99\u8725\u793e\u533a\u548c SMC \u793e\u533a\uff0c\u4e00\u540c\u6253\u9020 SMC \u9ad8\u6027\u80fd\u7f51\u7edc\u534f\u8bae\u6808\u3002\u00a0\u76f8\u5173\u94fe\u63a5\u5730\u5740\uff1a\u9ad8\u6027\u80fd\u7f51\u7edc SIG \u5730\u5740\uff1a\u00a0<a href=\"https:\/\/link.segmentfault.com\/?enc=JGaEDy81h6wcWCLl9I5ABw%3D%3D.V9dn%2Fk030Tu%2F5gtQlQDuVaicUmn4Iz6FQBNZBgcaksxjwGZJEhQijGWn3KjqLs1w\" rel=\"nofollow\">https:\/\/openanolis.cn\/sig\/hig&#8230;<\/a>\u4ee3\u7801\u4ed3\u5e93\u94fe\u63a5\uff1a\u00a0<a href=\"https:\/\/link.segmentfault.com\/?enc=p%2BN7edij5FtVSWqBhaq%2Fcg%3D%3D.jj%2Bx0BA9D9jfTy8kOojz8Q4ax3kiTpvFafMmyZO2rY%2FqUyuQCRCH0EEqRLDQrpeS\" rel=\"nofollow\">https:\/\/gitee.com\/anolis\/hpn-&#8230;<\/a>\u5f80\u671f\u6280\u672f\u6587\u7ae0\u53c2\u8003\uff1a\u00a01\u3001\u6027\u80fd\u63d0\u5347 57% \uff0cSMC-R \u900f\u660e\u52a0\u901f TCP \u5b9e\u6218\u89e3\u67902\u3001SMC-R\u8ba9\u7f51\u7edc\u6027\u80fd\u63d0\u534720%\u00a03\u3001\u7cfb\u5217\u89e3\u8bfbSMC-R\uff08\u4e00\uff09\uff1a\u900f\u660e\u65e0\u611f\u63d0\u5347\u4e91\u4e0aTCP\u5e94\u7528\u7f51\u7edc\u6027\u80fd4\u3001\u7cfb\u5217\u89e3\u8bfbSMC-R\uff08\u4e8c\uff09\uff1a\u878d\u5408TCP\u4e0eRDMA\u7684SMC-R\u901a\u4fe1\u00a0\u2014\u2014 \u5b8c \u2014\u2014\u52a0\u5165\u9f99\u8725\u793e\u7fa4\u00a0\u52a0\u5165\u5fae\u4fe1\u7fa4\uff1a\u6dfb\u52a0\u793e\u533a\u52a9\u7406-\u9f99\u8725\u793e\u533a\u5c0f\u9f99\uff08\u5fae\u4fe1\uff1aopenanolis_assis\uff09\uff0c\u5907\u6ce8\u3010\u9f99\u8725\u3011\u4e0e\u4f60\u540c\u5728\uff1b\u52a0\u5165\u9489\u9489\u7fa4\uff1a\u626b\u63cf\u4e0b\u65b9\u9489\u9489\u7fa4\u4e8c\u7ef4\u7801\u3002\u6b22\u8fce\u5f00\u53d1\u8005\/\u7528\u6237\u52a0\u5165\u9f99\u8725\u793e\u533a\uff08OpenAnolis\uff09\u4ea4\u6d41\uff0c\u5171\u540c\u63a8\u8fdb\u9f99\u8725\u793e\u533a\u7684\u53d1\u5c55\uff0c\u4e00\u8d77\u6253\u9020\u4e00\u4e2a\u6d3b\u8dc3\u7684\u3001\u5065\u5eb7\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edf\u751f\u6001\uff01<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042516742\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u5173\u4e8e\u9f99\u8725\u793e\u533a\u00a0\u9f99\u8725\u793e\u533a\uff08OpenAnolis\uff09\u662f\u7531\u4f01\u4e1a\u5355\u4f4d\u3001\u4e8b\u4e1a\u5355\u4f4d\u3001\u793e\u4f1a\u56e2\u4f53\u3001\u4e2a\u4eba\u7b49\u5728\u5171\u5efa\u3001\u5171\u6cbb\u3001\u5171\u4eab\u7684\u57fa\u7840\u4e0a\u7ec4\u6210\u7684\u975e\u8425\u5229\u6027\u5f00\u6e90\u793e\u533a\u3002\u9f99\u8725\u793e\u533a\u6210\u7acb\u4e8e 2020 \u5e74 9 \u6708\uff0c\u65e8\u5728\u6784\u5efa\u4e00\u4e2a\u5f00\u653e\u3001\u5e73\u7b49\u3001\u534f\u4f5c\u3001\u521b\u65b0\u7684 Linux \u4e0a\u6e38\u53d1\u884c\u7248\u793e\u533a\u53ca\u521b\u65b0\u5e73\u53f0\u3002\u00a0\u9f99\u8725\u793e\u533a\u6210\u7acb\u7684\u77ed\u671f\u76ee\u6807\u662f\u5f00\u53d1\u9f99\u8725\u64cd\u4f5c\u7cfb\u7edf(Anolis OS)\u4f5c\u4e3a CentOS \u505c\u670d\u540e\u7684\u5e94\u5bf9\u65b9\u6848\uff0c\u6784\u5efa\u4e00\u4e2a\u517c\u5bb9\u56fd\u9645 Linux \u4e3b\u6d41\u5382\u5546\u7684\u793e\u533a\u53d1\u884c\u7248\u3002\u4e2d\u957f\u671f\u76ee\u6807\u662f\u63a2\u7d22\u6253\u9020\u4e00\u4e2a\u9762\u5411\u672a\u6765\u7684\u64cd\u4f5c\u7cfb\u7edf\uff0c\u5efa\u7acb\u7edf\u4e00\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edf\u751f\u6001\uff0c\u5b75\u5316\u521b\u65b0\u5f00\u6e90\u9879\u76ee\uff0c\u7e41\u8363\u5f00\u6e90\u751f\u6001\u3002\u00a0\u76ee\u524d\uff0cAnolis OS 8.6\u00a0\u5df2\u53d1\u5e03\uff0c\u66f4\u591a\u9f99\u8725\u81ea\u7814\u7279\u6027\uff0c\u652f\u6301 X86_64 \u3001RISC-V\u3001Arm64\u3001LoongArch \u67b6\u6784\uff0c\u5b8c\u5584\u9002\u914d Intel\u3001\u5146\u82af\u3001\u9cb2\u9e4f\u3001\u9f99\u82af\u7b49\u82af\u7247\uff0c\u5e76\u63d0\u4f9b\u5168\u6808\u56fd\u5bc6\u548c\u673a\u5bc6\u8ba1\u7b97\u652f\u6301\u3002\u6b22\u8fce\u4e0b\u8f7d\uff1a\u00a0<a href=\"https:\/\/link.segmentfault.com\/?enc=%2FiVVNBSSRuNDdnpGsqhuvg%3D%3D.00K4pTyrRNNULLUdRxuoE5Xv0UEvqdo1WNABGN8FoMo%3D\" rel=\"nofollow\">https:\/\/openanolis.cn\/download<\/a>\u00a0\u52a0\u5165\u6211\u4eec\uff0c\u4e00\u8d77\u6253\u9020\u9762\u5411\u672a\u6765\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edf\uff01\u00a0<a href=\"https:\/\/link.segmentfault.com\/?enc=Lz9F9V%2BbNXkF3ih6slBwTg%3D%3D.AgNYQM55tbFBRjdjXjYChfc%2BXcBXkSVxOqzRpwhxDTg%3D\" rel=\"nofollow\">https:\/\/openanolis.cn<\/a>\u539f\u6587\u94fe\u63a5\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=XMFwSxX40H8B5E4%2B7eZNcg%3D%3D.DPd69%2BZOPoOflHnQt%2BtQq0DJQybwuwZzFFurv7iD66aaEMwNOCDB%2BksTmIWYUNho\" rel=\"nofollow\">https:\/\/click.aliyun.com\/m\/10&#8230;<\/a>\u672c\u6587\u4e3a\u963f\u91cc\u4e91\u539f\u521b\u5185\u5bb9\uff0c\u672a\u7ecf\u5141\u8bb8\u4e0d\u5f97\u8f6c\u8f7d\u3002<\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000042516721\">https:\/\/segmentfault.com\/a\/1190000042516721<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0\u65b0\u7684\u534f\u8bae\u6808\u662f\u4e0d\u662f\u91cd\u65b0\u53d1\u660e\u8f6e\u5b50\uff1f\u4e00\u4e2a\u534f\u8bae\u6808\u80fd\u5426\u89e3\u51b3\u6240\u6709\u95ee\u9898\uff1f\u9002\u914d\u6240\u6709\u573a\u666f\uff1f\u7f16\u8005\u6309\uff1a\u5f53\u524d\u5185\u6838\u7f51\u7edc\u534f\u8bae\u6808\u6709\u4ec0 [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-10006553","post","type-post","status-publish","format-standard","hentry"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006553","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10006553"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006553\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10006553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10006553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10006553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}