{"id":209152,"date":"2025-09-30T05:46:25","date_gmt":"2025-09-29T21:46:25","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209152\/"},"modified":"2025-09-30T05:46:26","modified_gmt":"2025-09-29T21:46:26","slug":"vps-209","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209152\/","title":{"rendered":"\u9999\u6e2fVPS\u89c6\u9891\u5361\u987f\u7ec8\u7ed3\u672f\uff1a7\u6b65\u5b9e\u6218\u4f18\u5316\u8ba9\u64ad\u653e\u7a33\u5b9a\u6d41\u7545"},"content":{"rendered":"<p>\u968f\u7740\u5728\u7ebf\u89c6\u9891\u3001\u76f4\u64ad\u548c\u8fdc\u7a0b\u4f1a\u8bae\u7684\u666e\u53ca\uff0c\u7f51\u7ad9\u3001\u5e94\u7528\u7684\u64ad\u653e\u4f53\u9a8c\u5df2\u6210\u4e3a\u7528\u6237\u7559\u5b58\u7684\u5173\u952e\u6307\u6807\u3002\u5c24\u5176\u662f\u9009\u62e9\u6d77\u5916\u673a\u623f\u90e8\u7f72\u65f6\uff0c\u6bd4\u5982\u9999\u6e2fVPS\u3001\u7f8e\u56fdVPS\u6216\u66f4\u8fdc\u7684\u7f8e\u56fd\u670d\u52a1\u5668\uff0c\u7f51\u7edc\u6296\u52a8\u3001\u4e22\u5305\u548c\u5e26\u5bbd\u6ce2\u52a8\u90fd\u53ef\u80fd\u5bfc\u81f4\u89c6\u9891\u5361\u987f\u3001\u7f13\u51b2\u9891\u7e41\u3002\u672c\u6587\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u548c\u5f00\u53d1\u8005\uff0c\u63d0\u4f9b\u4e00\u5957\u201c7\u6b65\u5b9e\u6218\u4f18\u5316\u6cd5\u201d\uff0c\u4ece\u5e95\u5c42\u7f51\u7edc\u5230\u5e94\u7528\u5c42\u7f16\u7801\u4e0e\u5206\u53d1\uff0c\u5168\u65b9\u4f4d\u89e3\u51b3\u9999\u6e2fVPS\u89c6\u9891\u5361\u987f\u95ee\u9898\uff0c\u786e\u4fdd\u64ad\u653e\u7a33\u5b9a\u6d41\u7545\u3002<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u4f1a\u5361\u987f\u2014\u2014\u6838\u5fc3\u539f\u7406\u5256\u6790<\/h2>\n<p>\u8981\u6709\u6548\u4fee\u590d\u5361\u987f\uff0c\u9996\u5148\u8981\u7406\u89e3\u4ea7\u751f\u5361\u987f\u7684\u51e0\u5927\u6839\u6e90\uff1a<\/p>\n<ul>\n<li><strong>\u7f51\u7edc\u5e26\u5bbd\u4e0d\u8db3\u6216\u4e0d\u7a33\u5b9a<\/strong>\uff1a\u77ac\u65f6\u5e26\u5bbd\u74f6\u9888\u4f1a\u5bfc\u81f4\u64ad\u653e\u5668\u65e0\u6cd5\u6301\u7eed\u62c9\u53d6\u6570\u636e\u3002<\/li>\n<li><strong>\u5ef6\u8fdf\u4e0e\u6296\u52a8\uff08jitter\uff09<\/strong>\uff1a\u9ad8\u5ef6\u8fdf\u6216\u4e0d\u7a33\u5b9a\u5ef6\u8fdf\u4f1a\u7834\u574f\u64ad\u653e\u7f13\u51b2\u7b56\u7565\uff0c\u5c24\u5176\u662f\u5b9e\u65f6\u6027\u8981\u6c42\u9ad8\u7684\u573a\u666f\uff08\u5982WebRTC\u3001\u4f4e\u5ef6\u8fdfHLS\uff09\u3002<\/li>\n<li><strong>\u4e22\u5305\u4e0e\u91cd\u4f20<\/strong>\uff1aTCP\u91cd\u4f20\u673a\u5236\u4f1a\u5ef6\u957f\u6570\u636e\u5230\u8fbe\u65f6\u95f4\uff0cUDP\u6d41\u5a92\u4f53\u5728\u4e22\u5305\u65f6\u8868\u73b0\u66f4\u5dee\u3002<\/li>\n<li><strong>\u670d\u52a1\u5668\u8d44\u6e90\u4e0d\u8db3<\/strong>\uff1aCPU\u3001\u5185\u5b58\u6216\u78c1\u76d8IO\u88ab\u6253\u6ee1\uff0c\u5bfc\u81f4\u8f6c\u7801\u6216\u5206\u53d1\u7ebf\u7a0b\u963b\u585e\u3002<\/li>\n<li><strong>\u5e94\u7528\u5c42\u7f16\u7801\u4e0e\u5c01\u88c5\u4e0d\u5f53<\/strong>\uff1a\u7801\u7387\u8fc7\u9ad8\u3001\u5173\u952e\u5e27\u95f4\u9694\u8bbe\u7f6e\u4e0d\u5408\u7406\u6216\u5206\u7247\u7b56\u7565\u4e0d\u4f73\uff0c\u90fd\u4f1a\u5f71\u54cd\u64ad\u653e\u987a\u6ed1\u3002<\/li>\n<\/ul>\n<h2>7\u6b65\u5b9e\u6218\u4f18\u5316\u65b9\u6cd5<\/h2>\n<h3>\u6b65\u9aa41\uff1a\u8bc4\u4f30\u5e76\u5347\u7ea7\u57fa\u7840\u7f51\u7edc\u94fe\u8def<\/h3>\n<p>\u9996\u8981\u5de5\u4f5c\u662f\u91cf\u5316\u95ee\u9898\u3002\u4f7f\u7528 tools\uff08iperf3\u3001mtr\/traceroute\u3001ping\uff09\u8fdb\u884c\u5e26\u5bbd\u3001\u4e22\u5305\u4e0e\u6296\u52a8\u6d4b\u8bd5\u3002\u82e5\u53d1\u73b0\u5728\u9999\u6e2fVPS\u5230\u76ee\u6807\u7528\u6237\u7fa4\uff08\u4f8b\u5982\u4e2d\u56fd\u5927\u9646\u3001\u4e1c\u5357\u4e9a\u6216\u5317\u7f8e\uff09\u7684\u8def\u5f84\u4e0a\u5b58\u5728\u4e22\u5305\u6216\u9ad8\u5ef6\u8fdf\uff0c\u5e94\u8003\u8651\uff1a<\/p>\n<ul>\n<li>\u9009\u62e9\u66f4\u4f18\u51fa\u53e3\uff1a\u9999\u6e2f\u670d\u52a1\u5668\u901a\u5e38\u6709\u76f4\u8fde\u4e2d\u56fd\u5927\u9646\u7684\u4f18\u8d28\u94fe\u8def\uff0c\u4f18\u5148\u9009\u62e9\u591a\u7ebfBGP\u6216\u76f4\u8fde\u8fd0\u8425\u5546\u7684\u673a\u623f\u3002<\/li>\n<li>\u5347\u7ea7\u5e26\u5bbd\u4e0e\u5cf0\u503c\u627f\u8bfa\uff08Burst\uff09\u7b56\u7565\uff0c\u907f\u514d\u7a81\u53d1\u6d41\u91cf\u65f6\u88ab\u9650\u901f\u3002<\/li>\n<li>\u5bf9\u4e8e\u8de8\u592a\u5e73\u6d0b\u573a\u666f\uff0c\u53ef\u6bd4\u8f83\u7f8e\u56fdVPS\u4e0e\u9999\u6e2fVPS\u5728\u76ee\u6807\u7528\u6237\u4fa7\u7684\u5ef6\u8fdf\u5dee\u5f02\uff0c\u9009\u62e9\u66f4\u9760\u8fd1\u7528\u6237\u7684\u673a\u623f\u3002<\/li>\n<\/ul>\n<h3>\u6b65\u9aa42\uff1a\u5f00\u542f\u5e76\u8c03\u4f18TCP\u4e0e\u5185\u6838\u53c2\u6570<\/h3>\n<p>\u5bf9\u4e8e\u57fa\u4e8eTCP\u4f20\u8f93\u7684\u6d41\u5a92\u4f53\uff08\u5982HLS\u3001DASH\u7684\u521d\u59cb\u4e0b\u8f7d\uff09\uff0c<strong>\u5185\u6838\u7f51\u7edc\u53c2\u6570\u5bf9\u541e\u5410\u548c\u7a33\u5b9a\u6027\u81f3\u5173\u91cd\u8981<\/strong>\u3002\u5efa\u8bae\u5728Linux\uff08\u4f8b\u5982Debian\/Ubuntu\/CentOS\uff09\u4e0a\u8c03\u6574\uff1a<\/p>\n<ul>\n<li>\u589e\u5927socket\u7f13\u51b2\u533a\uff1anet.core.rmem_max\u3001net.core.wmem_max\u3001net.ipv4.tcp_rmem\u3001net.ipv4.tcp_wmem\u3002<\/li>\n<li>\u542f\u7528TCP\u5feb\u901f\u5f00\u542f\uff08TCP Fast Open\uff09\u4ee5\u51cf\u5c11\u63e1\u624b\u5ef6\u8fdf\u3002<\/li>\n<li>\u4f7f\u7528TCP\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u5982<b>TCP BBR<\/b>\uff08bbr\u5bf9\u9ad8\u5e26\u5bbd\u5ef6\u8fdf\u79ef\u94fe\u8def\u7279\u522b\u6709\u6548\uff09\uff0c\u5728\u5185\u6838\u652f\u6301\u4e0b\u5207\u6362\uff1asysctl -w net.ipv4.tcp_congestion_control=bbr\u3002<\/li>\n<li>\u8c03\u8282net.ipv4.tcp_no_metrics_save\u7b49\u4ee5\u907f\u514d\u65e7\u8fde\u63a5\u4fe1\u606f\u5e72\u6270\u3002<\/li>\n<\/ul>\n<h3>\u6b65\u9aa43\uff1a\u4f18\u5316MTU\u4e0e\u907f\u514d\u5206\u7247<\/h3>\n<p>\u4e0d\u5408\u7406\u7684MTU\u4f1a\u5bfc\u81f4\u5206\u7247\uff0c\u4ece\u800c\u589e\u52a0\u4e22\u5305\u98ce\u9669\u4e0e\u91cd\u4f20\u3002\u901a\u8fc7ping -M do -s \u6765\u6d4b\u8bd5\u94fe\u8def\u652f\u6301\u7684\u6700\u5927\u5305\uff0c\u786e\u4fddVPS\u4e0e\u4e0a\u6e38\u8def\u7531\u5668MTU\u4e00\u81f4\u3002\u5e38\u89c1\u505a\u6cd5\u662f\u5728\u865a\u62df\u5316\u73af\u5883\u4e0b\u5c06MTU\u8bbe\u7f6e\u4e3a1500\u6216\u6839\u636e\u8fd0\u8425\u5546\u5efa\u8bae\u4f7f\u7528\u66f4\u5408\u9002\u503c\u3002<\/p>\n<h3>\u6b65\u9aa44\uff1a\u90e8\u7f72\u8fb9\u7f18\u7f13\u5b58\u4e0eCDN\u7b56\u7565<\/h3>\n<p>\u5bf9\u4e8e\u70b9\u64ad\u548c\u76f4\u64ad\u7684\u6df7\u5408\u573a\u666f\uff0c\u5408\u7406\u7684\u7f13\u5b58\u4e0e\u5206\u53d1\u7b56\u7565\u80fd\u663e\u8457\u964d\u4f4e\u539f\u7ad9\u538b\u529b\u5e76\u51cf\u5c11\u7528\u6237\u611f\u77e5\u5ef6\u8fdf\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u591a\u7ea7\u7f13\u5b58\uff1a\u5728\u9999\u6e2fVPS\u4f5c\u4e3a\u6e90\u7ad9\uff0c\u914d\u5408\u5c31\u8fd1\u7684CDN\u8282\u70b9\u5206\u53d1HLS\/DASH\u5206\u7247\u3002<\/li>\n<li>\u5bf9\u9759\u6001\u5206\u7247\u6216\u5e38\u89c1\u7801\u7387\u542f\u7528\u957f\u7f13\u5b58\uff0c\u52a8\u6001\u5185\u5bb9\u4f7f\u7528\u77edTTL\u5e76\u7ed3\u5408\u9884\u70ed\u7b56\u7565\u3002<\/li>\n<li>\u82e5\u76ee\u6807\u7528\u6237\u96c6\u4e2d\u5728\u7f8e\u56fd\uff0c\u53ef\u8003\u8651\u5728\u7f8e\u56fdVPS\u6216\u7f8e\u56fd\u670d\u52a1\u5668\u4e0a\u90e8\u7f72\u8fb9\u7f18\u56de\u6e90\uff0c\u63d0\u9ad8\u8de8\u6d0b\u8bbf\u95ee\u7a33\u5b9a\u6027\u3002<\/li>\n<\/ul>\n<h3>\u6b65\u9aa45\uff1a\u5e94\u7528\u5c42\u7f16\u7801\u4e0e\u5206\u8fa8\u7387\u81ea\u9002\u5e94\uff08ABR\uff09<\/h3>\n<p>\u5408\u7406\u7684\u7f16\u7801\u7b56\u7565\u76f4\u63a5\u5f71\u54cd\u5e26\u5bbd\u5360\u7528\u548c\u64ad\u653e\u6d41\u7545\u5ea6\uff1a<\/p>\n<ul>\n<li>\u91c7\u7528<strong>\u591a\u7801\u7387\u7f16\u7801\uff08ABR\uff09<\/strong>\uff1a\u6839\u636e\u7528\u6237\u5e26\u5bbd\u4e0e\u89e3\u7801\u80fd\u529b\u63d0\u4f9b\u591a\u6863\u7801\u7387\uff08\u4f8b\u5982360p@500kbps\u3001720p@2500kbps\u30011080p@5000kbps\uff09\u3002<\/li>\n<li>\u8bbe\u7f6e\u5408\u9002\u7684\u5173\u952e\u5e27\u95f4\u9694\uff08GOP\uff09\uff1a\u5bf9\u4e8e\u76f4\u64ad\u5efa\u8bae2\u79d2\u52304\u79d2\u7684GOP\uff0c\u4ee5\u51cf\u5c11\u5207\u6362\u5ef6\u8fdf\u3002<\/li>\n<li>\u4f7f\u7528\u9ad8\u6548\u7f16\u7801\u5668\uff1ax264\/x265\u6216\u786c\u4ef6\u52a0\u901f\uff08NVENC\u3001QuickSync\uff09\u53ef\u5728CPU\u53d7\u9650\u65f6\u4fdd\u8bc1\u8f6c\u7801\u6548\u7387\u3002<\/li>\n<li>\u5b9e\u73b0\u5e27\u4e22\u5f03\u4e0e\u4f4e\u5ef6\u8fdf\u6a21\u5f0f\uff1a\u5728\u7f51\u7edc\u62e5\u585e\u65f6\u4f18\u5148\u4fdd\u8bc1\u97f3\u9891\u8fde\u7eed\u6027\u4e0e\u5173\u952e\u5e27\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<h3>\u6b65\u9aa46\uff1a\u9009\u62e9\u5408\u9002\u7684\u89c6\u9891\u5206\u53d1\u670d\u52a1\u5668\u4e0e\u534f\u8bae<\/h3>\n<p>\u4e0d\u540c\u534f\u8bae\u5728\u6297\u4e22\u5305\u4e0e\u5ef6\u8fdf\u65b9\u9762\u8868\u73b0\u4e0d\u540c\uff1a<\/p>\n<ul>\n<li>HTTP-based\uff08HLS\/DASH\uff09\uff1a\u517c\u5bb9\u6027\u5f3a\uff0c\u4f46\u5ef6\u8fdf\u76f8\u5bf9\u8f83\u9ad8\u3002\u901a\u8fc7\u51cf\u5c11\u5206\u7247\u65f6\u957f\u548c\u4f7f\u7528Low-Latency HLS\/DASH\u53ef\u4ee5\u964d\u4f4e\u5ef6\u8fdf\u3002<\/li>\n<li>WebRTC\uff1a\u9002\u7528\u4e8e\u8d85\u4f4e\u5ef6\u8fdf\u573a\u666f\uff0c\u4f46\u5bf9\u90e8\u7f72\u548c\u5e26\u5bbd\u6296\u52a8\u66f4\u654f\u611f\uff0c\u901a\u5e38\u9700\u8981TURN\/STUN\u4ee5\u53ca\u826f\u597d\u7684\u7f51\u7edc\u63a2\u6d4b\u4e0eNACK\/PLI\u673a\u5236\u3002<\/li>\n<li>RTMP\/RTSP + HLS fallback\uff1a\u5b9e\u65f6\u6027\u4e0e\u517c\u5bb9\u6027\u517c\u987e\uff0c\u9002\u5408\u4f5c\u4e3a\u91c7\u96c6\u4e0a\u884c\u7684\u534f\u8bae\u3002<\/li>\n<li>\u4f7f\u7528\u7a33\u5b9a\u7684\u6d41\u5a92\u4f53\u670d\u52a1\uff08\u5982nginx-rtmp\u3001SRS\u3001Janus\uff09\uff1a\u8fd9\u4e9b\u5f00\u6e90\u670d\u52a1\u652f\u6301\u8f6c\u7801\u3001\u8d1f\u8f7d\u5747\u8861\u4e0e\u591a\u534f\u8bae\u8f6c\u53d1\u3002<\/li>\n<\/ul>\n<h3>\u6b65\u9aa47\uff1a\u76d1\u63a7\u3001\u56de\u653e\u94fe\u8def\u4e0e\u6301\u7eed\u4f18\u5316<\/h3>\n<p>\u4f18\u5316\u4e0d\u662f\u4e00\u6b21\u6027\u7684\u5de5\u4f5c\uff0c\u5fc5\u987b\u5efa\u7acb\u53ef\u89c2\u6d4b\u4f53\u7cfb\uff1a<\/p>\n<ul>\n<li>\u5b9e\u65f6\u76d1\u63a7\uff1a\u91c7\u96c6\u5e26\u5bbd\u3001\u4e22\u5305\u7387\u3001\u5ef6\u8fdf\u3001\u78c1\u76d8IO\u3001\u8f6c\u7801\u5ef6\u65f6\u3001\u64ad\u653e\u7aef\u7f13\u51b2\u6b21\u6570\uff08rebuffering events\uff09\u3002<\/li>\n<li>\u5408\u6210\u76d1\u6d4b\uff08Synthetic 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vs 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