{"id":210213,"date":"2025-10-24T08:38:31","date_gmt":"2025-10-24T00:38:31","guid":{"rendered":"https:\/\/www.server.hk\/blog\/210213\/"},"modified":"2025-10-24T08:38:32","modified_gmt":"2025-10-24T00:38:32","slug":"cdn-vr-ar","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/210213\/","title":{"rendered":"CDN\u8d4b\u80fdVR\/AR\uff1a\u4f4e\u5ef6\u8fdf\u5b9e\u65f6\u6e32\u67d3\u4e0e\u8fb9\u7f18\u667a\u80fd\u7684\u65b0\u8fdb\u5c55"},"content":{"rendered":"<p>\u968f\u7740VR\/AR\u5e94\u7528\u4ece\u5b9e\u9a8c\u5ba4\u8d70\u5411\u5546\u4e1a\u5316\u4e0e\u89c4\u6a21\u5316\u90e8\u7f72\uff0c<strong>\u5b9e\u65f6\u6e32\u67d3\u4e0e\u4f4e\u5ef6\u8fdf\u4f20\u8f93<\/strong>\u6210\u4e3a\u80fd\u5426\u63d0\u4f9b\u6c89\u6d78\u5f0f\u4f53\u9a8c\u7684\u5173\u952e\u74f6\u9888\u3002\u4f20\u7edf\u7684\u4e2d\u5fc3\u5316\u4e91\u6e32\u67d3\u5728\u9762\u5bf9\u5730\u7406\u5206\u5e03\u5e7f\u6cdb\u7684\u7528\u6237\u3001\u5e26\u5bbd\u6ce2\u52a8\u548c\u4e25\u683c\u7684\u5ef6\u8fdf\u4e0a\u9650\uff08\u901a\u5e38\u8981\u6c42\u7aef\u5230\u7aef\u5ef6\u8fdf\u4f4e\u4e8e20ms\uff09\u65f6\uff0c\u5f80\u5f80\u529b\u4e0d\u4ece\u5fc3\u3002\u8fd1\u5e74\u6765\uff0c\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u4e0e\u8fb9\u7f18\u8ba1\u7b97\u6280\u672f\u7684\u7ed3\u5408\uff0c\u4e3aVR\/AR\u573a\u666f\u5e26\u6765\u4e86\u65b0\u7684\u6280\u672f\u8def\u5f84\uff1a\u901a\u8fc7\u5728\u7f51\u7edc\u8fb9\u7f18\u63d0\u4f9b\u6e32\u67d3\u80fd\u529b\u3001\u667a\u80fd\u7f13\u5b58\u4e0e\u4f20\u8f93\u4f18\u5316\uff0c\u5b9e\u73b0\u66f4\u4f4e\u7684\u6296\u52a8\u3001\u66f4\u77ed\u7684\u9996\u5e27\u65f6\u95f4\u548c\u66f4\u7a33\u5b9a\u7684\u4ea4\u4e92\u4f53\u9a8c\u3002\u672c\u6587\u4ece\u539f\u7406\u3001\u6280\u672f\u5b9e\u73b0\u3001\u5e94\u7528\u573a\u666f\u3001\u4f18\u52bf\u5bf9\u6bd4\u4e0e\u9009\u8d2d\u5efa\u8bae\u4e94\u4e2a\u7ef4\u5ea6\uff0c\u6df1\u5165\u8bb2\u89e3CDN\u5982\u4f55\u8d4b\u80fdVR\/AR\uff0c\u5e76\u7ed3\u5408\u591a\u5730\u533a\u670d\u52a1\u5668\u8d44\u6e90\u7684\u90e8\u7f72\u8003\u8651\uff0c\u5e2e\u52a9\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\u505a\u51fa\u6280\u672f\u51b3\u7b56\u3002<\/p>\n<h2>CDN\u4e0e\u8fb9\u7f18\u667a\u80fd\u5728VR\/AR\u4e2d\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>\u8981\u7406\u89e3CDN\u5982\u4f55\u63d0\u5347VR\/AR\u4f53\u9a8c\uff0c\u987b\u628a\u63e1\u4e24\u4e2a\u6838\u5fc3\uff1a<strong>\u6e32\u67d3\u5206\u5c42<\/strong>\u4e0e<strong>\u4f20\u8f93\u65f6\u5ef6\u63a7\u5236<\/strong>\u3002<\/p>\n<h3>\u6e32\u67d3\u5206\u5c42\u4e0e\u6d41\u5f0f\u4f20\u8f93<\/h3>\n<p>\u5bf9\u4e8e\u5b9e\u65f6\u4e91\u6e32\u67d3\uff08Cloud 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AI\uff09\uff1a\u5728\u8fb9\u7f18\u5b9e\u73b0\u9884\u6d4b\u6027\u6e32\u67d3\uff08\u4f8b\u5982\u57fa\u4e8e\u773c\u52a8\u6570\u636e\u9884\u6d4b\u4e0b\u4e00\u89c6\u89d2\uff09\u3001\u8fd0\u52a8\u8865\u507f\u4e0e\u5e27\u63d2\u503c\uff0c\u63d0\u524d\u51c6\u5907\u6e32\u67d3\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<h2>\u5173\u952e\u6280\u672f\u7ec6\u8282\u4e0e\u5b9e\u73b0\u8981\u70b9<\/h2>\n<h3>\u7f51\u7edc\u4f20\u8f93\u4e0e\u534f\u8bae\u4f18\u5316<\/h3>\n<p>\u5728\u7f51\u7edc\u5c42\u9762\uff0cVR\/AR\u5bf9\u65f6\u5ef6\u4e0e\u7a33\u5b9a\u6027\u7684\u9700\u6c42\u8fdc\u9ad8\u4e8e\u6d41\u5a92\u4f53\u3002\u5e38\u89c1\u7684\u4f18\u5316\u624b\u6bb5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u91c7\u7528QUIC\/HTTP\/3\u4e0eUDP-based WebRTC<\/strong>\uff1a\u76f8\u8f83TCP\uff0cQUIC\u7ed3\u5408\u62e5\u585e\u63a7\u5236\u4e0e\u591a\u8def\u590d\u7528\u51cf\u5c11\u4e86\u961f\u5934\u963b\u585e\uff0c\u9002\u5408\u4f4e\u5ef6\u8fdf\u5b9e\u65f6\u6d41\u3002<\/li>\n<li><strong>\u534f\u8bae\u6808\u8c03\u6574<\/strong>\uff1a\u5f00\u542fECN\u3001\u8bbe\u7f6e\u5408\u7406\u7684MTU\u3001\u542f\u7528SACK\u4e0e\u5feb\u901f\u91cd\u4f20\uff0c\u6709\u52a9\u4e8e\u5728\u4e22\u5305\u65f6\u5feb\u901f\u6062\u590d\u3002<\/li>\n<li><strong>Forward Error Correction\uff08FEC\uff09\u4e0e\u5197\u4f59\u7b56\u7565<\/strong>\uff1a\u5728\u6781\u7aef\u4e22\u5305\u65f6\uff0c\u901a\u8fc7\u5197\u4f59\u5305\u964d\u4f4e\u91cd\u4f20\u5e26\u6765\u7684\u5ef6\u8fdf\u3002<\/li>\n<li><strong>\u5ef6\u8fdf\u9884\u7b97\u5206\u914d<\/strong>\uff1a\u5c06\u7aef\u5230\u7aef\u9884\u7b97\u7ec6\u5316\u4e3a\u4f20\u8f93\uff08\u7f51\u7edc\uff09+\u6e32\u67d3\uff08GPU\uff09+\u7f16\u7801\uff08\u7f16\u7801\u5668\uff09+\u89e3\u7801\uff08\u5ba2\u6237\u7aef\uff09\u7b49\u6a21\u5757\uff0c\u5206\u914d\u5e76\u6301\u7eed\u6d4b\u91cf\u6bcf\u90e8\u5206\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h3>\u8fb9\u7f18GPU\u4e0e\u865a\u62df\u5316\u6280\u672f<\/h3>\n<p>\u8fb9\u7f18\u8282\u70b9\u9700\u8981\u63d0\u4f9b\u5f3a\u5927\u7684GPU\u80fd\u529b\uff0c\u540c\u65f6\u4fdd\u8bc1\u591a\u79df\u6237\u73af\u5883\u7684\u9694\u79bb\u4e0e\u4f4e\u5f00\u9500\uff1a<\/p>\n<ul>\n<li><strong>GPU\u76f4\u901a\uff08PCIe Passthrough \/ SR-IOV\uff09<\/strong>\uff1a\u51cf\u5c11\u865a\u62df\u5316\u5f00\u9500\uff0c\u63d0\u5347\u6e32\u67d3\u6027\u80fd\u548c\u5e27\u7387\u7a33\u5b9a\u6027\u3002<\/li>\n<li><strong>GPU\u865a\u62df\u5316\u4e0e\u5171\u4eab\uff08MIG\u3001vGPU\uff09<\/strong>\uff1a\u9488\u5bf9\u8f7b\u91cf\u7ea7\u4f1a\u8bdd\u91c7\u7528GPU\u5206\u7247\uff08\u5982NVIDIA 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Rendering\uff08\u773c\u52a8\u805a\u7126\u6e32\u67d3\uff09<\/strong>\uff1a\u7ed3\u5408\u773c\u52a8\u8ffd\u8e2a\u8bbe\u5907\uff0c\u8fb9\u7f18\u53ea\u5bf9\u6ce8\u89c6\u533a\u57df\u9ad8\u8d28\u91cf\u6e32\u67d3\uff0c\u5176\u4ed6\u533a\u57df\u964d\u91c7\u6837\u3002<\/li>\n<li><strong>\u591a\u7ea7\u6e32\u67d3\u6d41\u6c34\u7ebf<\/strong>\uff1a\u5148\u5feb\u901f\u6e32\u67d3\u4f4e\u8d28\u5e27\u5e76\u7acb\u5373\u53d1\u9001\uff08\u964d\u4f4e\u9996\u5305\u5ef6\u8fdf\uff09\uff0c\u968f\u540e\u589e\u91cf\u53d1\u9001\u9ad8\u8d28\u91cf\u7ec6\u8282\uff08\u6e10\u8fdb\u5f0f\u7ec6\u5316\uff09\u3002<\/li>\n<li><strong>\u65f6\u95f4\u91cd\u6295\u5f71\uff08Time Reprojection \/ Motion Compensation\uff09<\/strong>\uff1a\u5ba2\u6237\u7aef\u57fa\u4e8e\u4e0a\u4e00\u5e27\u4e0e\u4f20\u611f\u5668\u6570\u636e\u5bf9\u5f53\u524d\u5e27\u8fdb\u884c\u9884\u6d4b\u4e0e\u4fee\u6b63\uff0c\u964d\u4f4e\u5ef6\u8fdf\u611f\u3002<\/li>\n<li><strong>\u53ef\u4f38\u7f29\u89c6\u9891\u7f16\u7801\uff08Scalable Video Coding, SVC\uff09<\/strong>\uff1a\u5141\u8bb8\u4e0d\u540c\u5e26\u5bbd\u4e0b\u9009\u62e9\u4e0d\u540c\u8d28\u91cf\u5c42\u6b21\uff0c\u8fb9\u7f18\u6309\u5e26\u5bbd\u9650\u5236\u88c1\u526a\u3002<\/li>\n<\/ul>\n<h2>\u5178\u578b\u5e94\u7528\u573a\u666f\u4e0e\u90e8\u7f72\u7b56\u7565<\/h2>\n<p>CDN+\u8fb9\u7f18\u667a\u80fd\u7684\u6280\u672f\u7ec4\u5408\u5728\u591a\u79cdVR\/AR\u573a\u666f\u4e2d\u5177\u6709\u660e\u663e\u4f18\u52bf\uff1a<\/p>\n<h3>\u8fdc\u7a0b\u5de5\u4e1a\u53ef\u89c6\u5316\u4e0e\u534f\u540c<\/h3>\n<p>\u5de5\u4e1a\u8fdc\u7a0b\u652f\u6301\u3001\u5de5\u7a0b\u8bbe\u8ba1\u8bc4\u5ba1\u7b49\u573a\u666f\u9700\u8981\u9ad8\u5206\u8fa8\u7387\u4e0e\u7cbe\u786e\u7684\u540c\u6b65\u3002\u5c06\u6e32\u67d3\u80fd\u529b\u90e8\u7f72\u5728\u9760\u8fd1\u5de5\u5382\u6216\u4f01\u4e1a\u7684\u8fb9\u7f18\u8282\u70b9\uff0c\u53ef\u4ee5\u51cf\u5c11\u4ea4\u4e92\u5ef6\u8fdf\u5e76\u4fdd\u8bc1\u6570\u636e\u4e3b\u6743\uff08\u4f8b\u5982\u5728\u9999\u6e2f\u670d\u52a1\u5668\u6216\u65e5\u672c\u670d\u52a1\u5668\u90e8\u7f72\u8fb9\u7f18\u8282\u70b9\u4ee5\u670d\u52a1\u4e9a\u592a\u5ba2\u6237\uff09\u3002<\/p>\n<h3>\u4e91\u6e38\u620f\u5f0fVR\u4e0e\u793e\u4ea4\u5143\u5b87\u5b99<\/h3>\n<p>\u5bf9\u5ef6\u8fdf\u6781\u654f\u611f\u7684\u591a\u4eba\u4ea4\u4e92\u73af\u5883\u9700\u8981\u5e7f\u57df\u4f4e\u5ef6\u8fdf\u8fde\u901a\u3002\u6b64\u65f6\u53ef\u5728\u5168\u7403CDN POP\uff08\u4f8b\u5982\u9999\u6e2f\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761\u3001\u7f8e\u56fd\u7b49\uff09\u90e8\u7f72\u6e32\u67d3\u96c6\u7fa4\uff0c\u5e76\u7ed3\u5408Anycast\u4e0e\u667a\u80fd\u5206\u6d41\u5b9e\u73b0\u8fde\u901a\u6027\u4f18\u5316\u3002<\/p>\n<h3>\u79fb\u52a8AR\u4e0e5G\u8fb9\u7f18\u534f\u540c<\/h3>\n<p>\u79fb\u52a8\u7ec8\u7aef\u901a\u8fc75G\u63a5\u5165\u65f6\uff0c\u53ef\u5229\u7528\u8fd0\u8425\u5546\u4fa7\u7684MEC\u8282\u70b9\u6765\u627f\u62c5\u90e8\u5206\u6e32\u67d3\u6216\u63a8\u7406\u4efb\u52a1\uff0c\u8fdb\u4e00\u6b65\u7f29\u51cf\u6700\u540e\u4e00\u516c\u91cc\u5ef6\u8fdf\u3002\u5bf9\u4e8e\u6df7\u5408\u73b0\u5b9e\uff08MR\uff09\u8bbe\u5907\uff0c\u667a\u80fd\u8fb9\u7f18\u8fd8\u53ef\u4ee5\u5904\u7406\u590d\u6742\u7684SLAM\u4e0e\u8bed\u4e49\u7406\u89e3\u4efb\u52a1\u3002<\/p>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\uff1a\u4e2d\u5fc3\u5316\u4e91 vs \u8fb9\u7f18CDN\u52a0\u901f<\/h2>\n<p>\u5c06\u4e2d\u5fc3\u5316\u4e91\u6e32\u67d3\u548c\u8fb9\u7f18\u6e32\u67d3\u8fdb\u884c\u5bf9\u6bd4\uff0c\u53ef\u4ee5\u6e05\u6670\u770b\u5230\u9009\u62e9\u6743\u8861\uff1a<\/p>\n<ul>\n<li><strong>\u5ef6\u8fdf\u4e0e\u6296\u52a8\uff1a<\/strong>\u8fb9\u7f18\u8282\u70b9\u80fd\u663e\u8457\u964d\u4f4e\u7f51\u7edc\u5f80\u8fd4\uff0c\u5c24\u5176\u5bf9\u533a\u57df\u7528\u6237\uff08\u5982\u4f7f\u7528\u9999\u6e2fVPS\u6216\u9999\u6e2f\u670d\u52a1\u5668\u7684\u672c\u5730\u5ba2\u6237\uff09\u5ef6\u8fdf\u6536\u76ca\u660e\u663e\u3002\u4e2d\u5fc3\u4e91\u5728\u5168\u7403\u8986\u76d6\u4e0b\u53ef\u80fd\u51fa\u73b0\u8f83\u9ad8\u6296\u52a8\u3002<\/li>\n<li><strong>\u5e26\u5bbd\u4e0e\u6210\u672c\uff1a<\/strong>\u8fb9\u7f18\u6e32\u67d3\u901a\u8fc7foveation\u548c\u5206\u5c42\u4f20\u8f93\u51cf\u5c11\u5e26\u5bbd\u6d88\u8017\uff0c\u4f46\u5206\u6563\u7684\u8fb9\u7f18GPU\u90e8\u7f72\u4f1a\u63d0\u9ad8\u8fd0\u7ef4\u4e0e\u786c\u4ef6\u6210\u672c\u3002\u4e2d\u5fc3\u5316\u90e8\u7f72\u5728\u5927\u89c4\u6a21\u5e76\u53d1\u4e0b\u53ef\u4eab\u53d7\u89c4\u6a21\u5316GPU\u6c60\u7684\u7ecf\u6d4e\u6027\u3002<\/li>\n<li><strong>\u53ef\u6269\u5c55\u6027\u4e0e\u5f39\u6027\uff1a<\/strong>CDN\u7ed3\u5408\u5bb9\u5668\u5316\u4e0e\u81ea\u52a8\u6269\u7f29\u5bb9\u80fd\u66f4\u5feb\u54cd\u5e94\u5c40\u90e8\u6d41\u91cf\u6fc0\u589e\uff1b\u4e2d\u5fc3\u4e91\u5728\u77ed\u65f6\u95f4\u63d0\u4f9b\u8d85\u5927\u8d44\u6e90\u7684\u80fd\u529b\u66f4\u5f3a\uff0c\u4f46\u5730\u7406\u5ef6\u8fdf\u4e0d\u53ef\u5ffd\u7565\u3002<\/li>\n<li><strong>\u5408\u89c4\u4e0e\u6570\u636e\u6cbb\u7406\uff1a<\/strong>\u82e5\u6d89\u53ca\u9690\u79c1\u6216\u5408\u89c4\u8981\u6c42\uff08\u4f8b\u5982\u6570\u636e\u5fc5\u987b\u5b58\u653e\u5728\u7279\u5b9a\u56fd\u5bb6\uff09\uff0c\u53ef\u5728\u5bf9\u5e94\u533a\u57df\uff08\u5982\u65e5\u672c\u670d\u52a1\u5668\u6216\u97e9\u56fd\u670d\u52a1\u5668\uff09\u5e03\u7f6e\u8fb9\u7f18\u8ba1\u7b97\uff0c\u6ee1\u8db3\u672c\u5730\u5316\u8981\u6c42\u3002<\/li>\n<\/ul>\n<h2>\u9009\u8d2d\u5efa\u8bae\uff1a\u5982\u4f55\u4e3aVR\/AR\u90e8\u7f72\u9009\u62e9\u670d\u52a1\u5668\u4e0eCDN\u670d\u52a1<\/h2>\n<p>\u7ad9\u957f\u4e0e\u4f01\u4e1a\u5728\u89c4\u5212\u65f6\u5e94\u4ece\u7f51\u7edc\u3001\u7b97\u529b\u3001\u5730\u7406\u4e0e\u6210\u672c\u56db\u4e2a\u7ef4\u5ea6\u8003\u8651\uff1a<\/p>\n<h3>1. \u786e\u5b9a\u5ef6\u8fdf\u76ee\u6807\u4e0e\u7528\u6237\u5206\u5e03<\/h3>\n<p>\u5148\u91cf\u5316\u7aef\u5230\u7aef\u5ef6\u8fdf\u8981\u6c42\uff08\u4f8b\u5982\u4ea4\u4e92\u5f0fVR\u76ee\u6807\u4e3a&lt;20ms\uff0c\u4e91\u6e32\u67d3\u89c6\u9891\u6d41\u53ef\u63a5\u53d730\u201350ms\uff09\uff0c\u5e76\u7edf\u8ba1\u7528\u6237\u5730\u57df\u5206\u5e03\u3002\u4e9a\u6d32\u7528\u6237\u96c6\u4e2d\u5219\u4f18\u5148\u8003\u8651\u9999\u6e2f\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u6216\u65b0\u52a0\u5761\u670d\u52a1\u5668\u7684\u8fb9\u7f18\u8282\u70b9\uff1b\u5168\u7403\u5206\u5e03\u5219\u9700\u5728\u7f8e\u56fd\u670d\u52a1\u5668\u4e0e\u6d77\u5916\u670d\u52a1\u5668\u8282\u70b9\u4e0a\u505a\u5168\u7403PoP\u5e03\u5c40\u3002<\/p>\n<h3>2. \u8bc4\u4f30\u7f51\u7edc\u8d28\u91cf\u4e0e\u8fd0\u8425\u5546\u5408\u4f5c<\/h3>\n<p>\u9009\u62e9\u5177\u5907Anycast\u3001\u76f4\u8fde\u4e3b\u5e72\u4e0e\u591a\u8fd0\u8425\u5546\u63a5\u5165\u7684CDN\u63d0\u4f9b\u5546\u53ef\u4ee5\u51cf\u5c11\u8de8\u5883\u6296\u52a8\u3002\u82e5\u76ee\u6807\u7528\u6237\u591a\u4e3a\u79fb\u52a8\u7aef\uff0c\u4f18\u5148\u8003\u8651\u652f\u63015G MEC\u6216\u4e0e\u8fd0\u8425\u5546\u6709\u5408\u4f5c\u7684\u8fb9\u7f18\u90e8\u7f72\u3002<\/p>\n<h3>3. \u9009\u62e9\u5408\u9002\u7684GPU\u4e0e\u865a\u62df\u5316\u65b9\u6848<\/h3>\n<p>\u6839\u636e\u5e76\u53d1\u4f1a\u8bdd\u6570\u9009\u62e9GPU\u578b\u53f7\u4e0e\u5206\u7247\u7b56\u7565\uff1a\u91cd\u5ea6\u6e32\u67d3\u63a8\u8350\u91c7\u7528\u72ec\u4eabGPU\u6216PCIe Passthrough\uff1b\u8f7b\u91cf\u4f1a\u8bdd\u53ef\u91c7\u7528vGPU\u6216MIG\u5206\u7247\u4ee5\u63d0\u5347\u5229\u7528\u7387\u3002\u540c\u65f6\u5173\u6ce8\u4e91\/\u8fb9\u7f18\u5b9e\u4f8b\u662f\u5426\u652f\u6301NVMe\u9ad8\u901f\u5b58\u50a8\u3001SR-IOV\u7f51\u7edc\u4e0eGPU\u76d1\u63a7API\u3002<\/p>\n<h3>4. 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