{"id":97068,"date":"2026-08-29T01:41:55","date_gmt":"2026-08-28T17:41:55","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/97068.html"},"modified":"2026-08-29T01:41:55","modified_gmt":"2026-08-28T17:41:55","slug":"kkce-%e5%9c%a8%e7%ba%bftcping%e3%80%81tcping%e6%a3%80%e6%b5%8b%e3%80%81%e5%85%8d%e8%b4%b9tcping-%e5%bf%ab%e5%bf%ab%e6%b5%8b","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/97068.html","title":{"rendered":"KKCE: \u5728\u7ebfTCPing\u3001TCPING\u68c0\u6d4b\u3001\u514d\u8d39TCPING-\u5feb\u5feb\u6d4b"},"content":{"rendered":"<h3>\u4e00\u3001\u5f15\u8a00&#xff1a;\u4e3a\u4ec0\u4e48 TCPing \u5ef6\u8fdf 30ms&#xff0c;\u5c0f\u63a5\u53e3 TTFB \u5374\u8981 180ms&#xff1f;<\/h3>\n<p>\u5728 Web \u6027\u80fd\u4f18\u5316\u4e2d&#xff0c;\u6211\u4eec\u5e38\u4ee5\u4e3a\u53ea\u8981 tcping \u76ee\u6807:443 \u663e\u793a RTT 30ms\u3001Port is open&#xff0c;\u9996\u5305\u65f6\u95f4\u5c31\u5e94\u8be5\u662f&#034;30ms &#043; \u670d\u52a1\u7aef\u5904\u7406&#034;\u3002\u8fd0\u7ef4\u5728 KKCE \u5728\u7ebfTCPing\u200b \u770b\u5230\u6b27\u6d32\u8282\u70b9 RTT 30ms \u7a33\u5982\u6cf0\u5c71&#xff0c;\u4fbf\u8ba4\u4e3a&#034;\u94fe\u8def\u6781\u4f73&#xff0c;TTFB \u9ad8\u4e00\u5b9a\u662f\u5e94\u7528\u6162&#034;\u3002\u4f46\u7528 www.kkce.com \u7684 &#034;\u7f51\u7ad9\u6d4b\u901f&#034;\u200b \u5bf9\u540c\u4e00\u63a5\u53e3\u6d4b\u4e00\u4e2a 16KB \u7684 JSON&#xff0c;\u5374\u53d1\u73b0 TTFB \u9ad8\u8fbe 180ms&#xff0c;\u800c 1 \u5b57\u8282\u63a2\u9488 TTFB \u4ec5 35ms\u3002\u8fd9\u79cd&#034;TCPing \u5feb\u3001\u5c0f\u6587\u4ef6\u5feb\u3001\u5927\u4e00\u70b9\u9996\u5305\u6162&#034;\u7684\u73b0\u8c61&#xff0c;\u76f4\u63a5\u66b4\u9732\u4e86 TCP \u521d\u59cb\u62e5\u585e\u7a97\u53e3&#xff08;initcwnd&#xff09;\u8fc7\u5c0f\u5bfc\u81f4\u7684\u6162\u542f\u52a8\u591a\u8f6e\u6b21\u53d1\u5c04\u2014\u2014\u670d\u52a1\u5668\u5185\u6838\u7b2c\u4e00\u53e3\u53ea\u80fd\u5582 3~4 \u4e2a MSS&#xff0c;16KB \u8981\u5206 5 \u4e2a RTT \u624d\u53d1\u5b8c&#xff0c;\u7eaf\u63e1\u624b\u5feb\u7684 TCPing \u5b8c\u5168\u6d4b\u4e0d\u51fa\u8fd9\u79cd\u4f20\u8f93\u5c42\u9965\u997f\u3002<\/p>\n<p>\u95ee\u9898\u5f80\u5f80\u4e0d\u5728\u5e94\u7528\u4ee3\u7801&#xff0c;\u4e5f\u4e0d\u5728\u94fe\u8def RTT&#xff0c;\u800c\u5728 Linux \u5185\u6838 initcwnd \u4e0e CDN \u8fb9\u7f18\u8986\u76d6\u7b56\u7565&#xff1a;\u65e7\u5185\u6838\u9ed8\u8ba4 initcwnd&#061;3&#xff0c;\u6216 CDN \u8fb9\u7f18\u8282\u70b9\u91cd\u7f6e\u4e86\u7a97\u53e3&#xff0c;\u4f7f\u9996\u5c4f HTML\/API \u54cd\u5e94\u88ab\u6162\u542f\u52a8\u62d6\u6162\u3002\u5e38\u89c4 TCPing \u53ea\u53d1\u4e00\u4e2a SYN \u6d4b\u63e1\u624b\u5f80\u8fd4&#xff0c;\u4e0d\u6d89\u53ca\u6570\u636e\u4f20\u8f93&#xff0c;\u81ea\u7136\u770b\u4e0d\u5230 initcwnd \u7684\u74f6\u9888\u3002\u672c\u6587\u5c06\u6559\u4f60\u7528 KKCE \u7684 &#034;\u5728\u7ebfTCPin&#034;&#xff08;\u5168\u7403 3000&#043; \u8282\u70b9&#xff09;\u7ed3\u5408 &#034;\u7f51\u7ad9\u6d4b\u901f&#034;\u3001&#034;\u6279\u91cfTCPing&#034;\u3001&#034;\u8def\u7531\u67e5\u8be2&#034;\u200b \u4e0e &#034;IP\u67e5\u8be2&#034;&#xff0c;\u95f4\u63a5\u91cf\u5316 TCP \u521d\u59cb\u7a97\u53e3\u74f6\u9888&#xff0c;\u800c\u4e0d\u662f\u88ab&#034;TCPing 30ms&#034;\u9ebb\u75f9\u3002<\/p>\n<p style=\"text-align:center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260828174153-6a91c861ddb1d.png\" \/><\/p>\n<h3>\u4e8c\u3001TCP \u521d\u59cb\u7a97\u53e3\u4e0e TCPing \u7684\u6280\u672f\u8fb9\u754c<\/h3>\n<h4>2.1 initcwnd \u51b3\u5b9a&#034;\u7b2c\u4e00\u53e3\u996d&#034;\u591a\u5927<\/h4>\n<p>TCP \u4e09\u6b21\u63e1\u624b\u5b8c\u6210\u540e\u8fdb\u5165\u6162\u542f\u52a8&#xff0c;\u7b2c\u4e00\u4e2a RTT \u5185\u80fd\u53d1\u7684\u6570\u636e\u91cf &#061; initcwnd \u00d7 MSS&#xff08;MSS \u901a\u5e38 1460 \u5b57\u8282&#xff09;\u3002<\/p>\n<ul>\n<li>initcwnd&#061;3 \u2192 \u9996 RTT \u53d1 ~4.2KB&#xff0c;16KB \u8981 ~5 RTT \u53d1\u5b8c<\/li>\n<li>initcwnd&#061;10&#xff08;Linux 3.0&#043; \u9ed8\u8ba4&#xff09;\u2192 \u9996 RTT \u53d1 ~14.6KB&#xff0c;16KB \u7ea6 2 RTT \u53d1\u5b8c<\/li>\n<li>\u8de8\u6d0b RTT 30ms \u65f6&#xff0c;5 RTT &#061; 150ms \u989d\u5916\u5ef6\u8fdf&#xff0c;\u6b63\u597d\u89e3\u91ca TTFB 180ms vs 35ms \u7684\u5dee\u503c<\/li>\n<\/ul>\n<h4>2.2 \u4e3a\u4ec0\u4e48 TCPing \u6d4b\u4e0d\u51fa<\/h4>\n<p>TCPing \u6d41\u7a0b&#xff1a;\u53d1 SYN \u2192 \u6536 SYN-ACK \u2192 \u8bb0\u65f6 \u2192 \u53d1 RST\u3002\u5b83\u53ea\u6d4b\u63e1\u624b RTT&#xff0c;\u4e0d\u4f20\u6570\u636e&#xff0c;\u56e0\u6b64&#xff1a;<\/p>\n<ul>\n<li>initcwnd&#061;3 \u548c initcwnd&#061;10 \u7684 TCPing \u7ed3\u679c\u5b8c\u5168\u4e00\u81f4<\/li>\n<li>TCPing \u901a \u2260 \u9996\u5305\u5feb&#xff0c;\u53ea\u8bc1\u660e\u7aef\u53e3\u6d3b\u3001\u63e1\u624b\u94fe\u8def\u901a<\/li>\n<\/ul>\n<h4>2.3 \u4e3a\u4ec0\u4e48\u5fc5\u987b\u5168\u7403 3000&#043; \u8282\u70b9<\/h4>\n<p>\u5355\u70b9\u6d4b\u901f\u53ea\u80fd\u770b\u5230&#034;\u4f60\u8fd9\u6761\u5bbd\u5e26\u5230\u670d\u52a1\u5668&#034;\u7684 TTFB&#xff1b;\u53ea\u6709\u4ece \u5168\u7403 3000&#043; \u8282\u70b9&#xff08;\u7535\u4fe1\/\u79fb\u52a8\/\u8054\u901a\/\u6559\u80b2\u7f51\/\u591a\u7ebf\/\u6d77\u5916&#xff09;\u5e76\u53d1\u6d4b\u901f&#xff0c;\u624d\u80fd\u533a\u5206&#xff1a;<\/p>\n<ul>\n<li>\u5168\u8282\u70b9&#034;\u0394TTFB\/RTT&#034;\u90fd\u504f\u5927 \u2192 \u670d\u52a1\u7aef initcwnd \u5168\u5c40\u5c0f<\/li>\n<li>\u4ec5\u6d77\u5916\u8282\u70b9\u504f\u5927\u3001\u56fd\u5185\u6b63\u5e38 \u2192 \u6d77\u5916 CDN \u8fb9\u7f18\u8986\u76d6\u4e86\u7a97\u53e3&#xff0c;\u6216\u8de8\u6d0b RTT \u653e\u5927\u6162\u542f\u52a8<\/li>\n<li>\u4ec5\u67d0\u8fd0\u8425\u5546\u504f\u5927 \u2192 \u8be5\u65b9\u5411\u4e2d\u95f4\u76d2&#xff08;LB\/\u9632\u706b\u5899&#xff09;\u91cd\u7f6e\u4e86\u7a97\u53e3<\/li>\n<\/ul>\n<h3>\u4e09\u3001\u5229\u7528 KKCE \u5168\u7403 3000&#043; \u8282\u70b9\u77e9\u9635\u5ba1\u8ba1 initcwnd<\/h3>\n<p>KKCE&#xff08;\u5feb\u5feb\u6d4b&#xff0c;www.kkce.com&#xff09;\u662f\u7efc\u5408\u7f51\u7edc\u68c0\u6d4b\u5e73\u53f0&#xff0c;&#034;\u5728\u7ebfTCPing&#034;\u652f\u6301 IPv4\/IPv6\u3001\u6307\u5b9a\u7aef\u53e3\u3001\u5168\u7403 3000&#043; \u63a2\u6d4b\u8282\u70b9\u5e76\u53d1&#xff0c;\u8282\u70b9\u5bc6\u5ea6\u8d85\u8fc7\u5e02\u9762\u6240\u6709\u5e73\u53f0\u3002\u5e73\u53f0\u540c\u65f6\u63d0\u4f9b \u7f51\u7ad9\u6d4b\u901f&#xff08;\u5feb\u901f\/\u7f13\u6162\/\u5b8c\u6574\u622a\u56fe&#xff0c;\u9ad8\u7ea7\u9009\u9879\u542b\u6307\u5b9a\u89e3\u6790\u3001\u6307\u5b9a DNS\u3001UA\u3001Cookies\u3001Method\u3001Referer\u3001\u91cd\u5b9a\u5411&#xff09;\u3001\u6279\u91cfTCPing&#xff08;\u5b9a\u65f6\u591a\u76ee\u6807\u5de1\u68c0&#xff09;\u3001\u5728\u7ebfPing\u3001\u8def\u7531\u67e5\u8be2&#xff08;IPv4\/IPv6&#xff09;\u3001MTR\u53bb\u7a0b\u3001IP\u67e5\u8be2\u3001SSL\u68c0\u6d4b\u3001HTTP3\u68c0\u6d4b\u3001DNS\u67e5\u8be2\u3001Whois\u67e5\u8be2\u3001\u6279\u91cfPing\u3001\u6279\u91cfHTTP(S)\u200b \u7b49&#xff0c;\u662f TCP \u6027\u80fd\u5ba1\u8ba1\u7684\u745e\u58eb\u519b\u5200\u3002<\/p>\n<h4>3.1 \u5728\u7ebfTCPing&#xff1a;\u6d4b\u63e1\u624b\u57fa\u7ebf RTT<\/h4>\n<li>\u64cd\u4f5c&#xff1a;www.kkce.com \u2192 &#034;\u5728\u7ebfTCPing&#034;\u200b \u2192 \u8f93 \u57df\u540d:443 \u6216 IP:443 \u2192 \u8282\u70b9\u5168\u9009&#xff08;\u5168\u7403 3000&#043;&#xff09;\u2192 \u6267\u884c\u3002<\/li>\n<li>\u770b\u4ec0\u4e48&#xff1a;\u8bb0\u5f55\u5404\u8282\u70b9 RTT&#xff08;\u5982\u6b27\u6d32 30ms\u3001\u5317\u4eac 18ms&#xff09;&#xff0c;\u8fd9\u662f\u540e\u7eed \u0394T \u8ba1\u7b97\u7684\u5206\u6bcd\u3002<\/li>\n<h4>3.2 \u7f51\u7ad9\u6d4b\u901f&#xff1a;\u7528\u5927\u5c0f\u6587\u4ef6\u53cd\u63a8\u7a97\u53e3<\/h4>\n<li>\u64cd\u4f5c&#xff1a;&#034;\u7f51\u7ad9\u6d4b\u901f&#034;\u200b \u9ad8\u7ea7\u9009\u9879 \u6307\u5b9a\u89e3\u6790\u200b \u586b\u6e90\u7ad9 IP&#xff08;\u6392\u9664 CDN \u5e72\u6270&#xff09;&#xff0c;\u5206\u522b\u6d4b&#xff1a;\n<ul>\n<li>1 \u5b57\u8282\u63a2\u9488 URL&#xff08;TTFB\u2248RTT&#043;\u5904\u7406&#xff09;<\/li>\n<li>16KB \u9759\u6001 JSON&#xff08;TTFB \u542b\u6162\u542f\u52a8\u8f6e\u6b21&#xff09;<\/li>\n<\/ul>\n<\/li>\n<li>\u8ba1\u7b97&#xff1a;\u0394T &#061; \u5927\u6587\u4ef6TTFB &#8211; \u5c0f\u6587\u4ef6TTFB&#xff0c;\u8f6e\u6b21 \u2248 \u0394T \/ RTT\u3002\n<ul>\n<li>\u0394T\/RTT \u2248 2 \u2192 initcwnd\u224810<\/li>\n<li>\u0394T\/RTT \u2248 5 \u2192 initcwnd\u22483<\/li>\n<\/ul>\n<\/li>\n<h4>3.3 \u6279\u91cfTCPing&#xff1a;\u6301\u7eed\u770b\u63e1\u624b\u6296\u52a8<\/h4>\n<li>\u64cd\u4f5c&#xff1a;&#034;\u6279\u91cfTCPing&#034;\u200b \u540c\u76ee\u6807\u6bcf 10s \u4e00\u91c7&#xff0c;\u6301\u7eed 10min\u3002<\/li>\n<li>\u76ee\u7684&#xff1a;\u786e\u8ba4 RTT \u672c\u8eab\u7a33&#xff0c;\u6392\u9664&#034;\u7f51\u7edc\u6296\u5bfc\u81f4 TTFB \u9ad8&#034;\u7684\u8bef\u5224&#xff0c;\u628a\u9505\u9501\u5b9a\u5230\u4f20\u8f93\u5c42\u3002<\/li>\n<h4>3.4 \u8def\u7531\u67e5\u8be2 &#043; IP\u67e5\u8be2&#xff1a;\u5b9a\u4f4d\u4e2d\u95f4\u76d2\u6539\u7a97\u53e3<\/h4>\n<li>\u64cd\u4f5c&#xff1a;\u5bf9\u6d77\u5916\u6162\u8282\u70b9\u8dd1 &#034;\u8def\u7531\u67e5\u8be2&#034;&#xff0c;\u628a\u8def\u5f84\u4e2d LB\/\u9632\u706b\u5899 IP \u4e22\u8fdb &#034;IP\u67e5\u8be2&#034;\u3002<\/li>\n<li>\u76ee\u7684&#xff1a;\u82e5\u67d0\u4e91 LB \u540e TTFB \u7a81\u589e\u4e14 \u0394T\/RTT \u5f02\u5e38 \u2192 \u8be5 LB \u53ef\u80fd\u91cd\u7f6e initcwnd\u3002<\/li>\n<h3>\u56db\u3001\u5b9e\u6218&#xff1a;\u51fa\u6d77 API&#034;\u6b27\u6d32 TTFB 180ms&#xff0c;TCPing \u5374 30ms&#034;<\/h3>\n<p>\u80cc\u666f&#xff1a;\u67d0\u51fa\u6d77 API \u6b27\u6d32\u7528\u6237\u6295\u8bc9\u9996\u5305\u6162\u3002KKCE \u5728\u7ebfTCPing\u200b \u6d4b 443&#xff1a;\u6b27\u6d32\u8282\u70b9 RTT 30ms\u3001Port is open\u3002\u4f46 \u7f51\u7ad9\u6d4b\u901f&#xff08;\u6307\u5b9a\u89e3\u6790\u5230\u6e90\u7ad9&#xff09;\u6d4b 16KB JSON&#xff1a;TTFB 180ms&#xff1b;\u6d4b 1 \u5b57\u8282\u63a2\u9488&#xff1a;TTFB 35ms\u3002<\/p>\n<ul>\n<li>\u0394T &#061; 145ms&#xff0c;\u0394T\/RTT &#061; 145\/30 \u2248 4.8 \u2192 \u63a8\u65ad initcwnd\u22483<\/li>\n<li>\u6279\u91cfTCPing 10 \u5206\u949f RTT \u7a33\u6001 29~31ms \u2192 \u7f51\u7edc\u5c42\u65e0\u8d23<\/li>\n<li>\u8def\u7531\u67e5\u8be2&#xff1a;\u6b27\u6d32\u2192\u6e90\u7ad9\u8def\u5f84\u65e0\u5f02\u5e38\u8df3&#xff1b;IP\u67e5\u8be2 \u786e\u8ba4\u6e90\u7ad9\u4e3a\u4e91 ECS \u5355\u5b9e\u4f8b \u6839\u56e0&#xff1a;ECS \u5185\u6838 net.ipv4.tcp_initcwnd \u672a\u663e\u5f0f\u8bbe&#xff0c;\u7ee7\u627f\u65e7\u9ed8\u8ba4\u503c 3&#xff08;\u6216\u7ecf\u67d0\u4e2d\u95f4\u7ec4\u4ef6\u88ab\u91cd\u7f6e&#xff09;&#xff0c;16KB \u54cd\u5e94\u8de8\u6d0b\u9700 5 RTT \u53d1\u5b8c\u3002 \u4f18\u5316&#xff1a;<\/li>\n<li>\u6e90\u7ad9\u6267\u884c ip route change default initcwnd 10 initrwnd 10<\/li>\n<li>\u786e\u8ba4 CDN \u8fb9\u7f18\u672a\u8986\u76d6\u7a97\u53e3&#xff08;\u90e8\u5206 CDN \u9ed8\u8ba4 initcwnd 10&#xff0c;\u4f46\u56de\u6e90\u5230\u6e90\u7ad9\u8fd9\u6bb5\u4ecd\u53d7\u6e90\u7ad9\u63a7\u5236&#xff09;<\/li>\n<li>\u7528 KKCE \u6279\u91cfHTTP(S)\u200b \u5bf9 16KB \u63a5\u53e3\u505a\u6d77\u5916\u8282\u70b9\u6bcf\u65e5\u57fa\u7ebf&#xff0c;\u0394T\/RTT&gt;3 \u544a\u8b66 \u590d\u6d4b&#xff1a;\u6b27\u6d32 16KB TTFB \u964d\u81f3 95ms&#xff08;\u0394T\u224860ms&#xff0c;\u7ea6 2 RTT&#xff09;&#xff0c;TCPing RTT \u4e0d\u53d8\u4ecd 30ms\u3002<\/li>\n<\/ul>\n<h3>\u4e94\u3001TCP \u521d\u59cb\u7a97\u53e3\u74f6\u9888\u5ba1\u8ba1\u6e05\u5355<\/h3>\n<li>\u5168\u7403\u8282\u70b9\u5728\u7ebfTCPing&#xff1a;\u7528 KKCE \u5728\u7ebfTCPing&#xff08;3000&#043; 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