Date: Wed, 24 Jan 2001 11:08:04 -0500 (EST) From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> To: Tatsuhiko Terai <genuine@ma4.justnet.ne.jp> Cc: freebsd-net@FreeBSD.ORG Subject: estimation of RTT,RTO from tcpcb parameter Message-ID: <200101241608.LAA61455@khavrinen.lcs.mit.edu> In-Reply-To: <3A6EFB83208.3FA9GENUINE@ma4.justnet.ne.jp> References: <3A6EFB83208.3FA9GENUINE@ma4.justnet.ne.jp>
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<<On Thu, 25 Jan 2001 00:57:55 +0900, Tatsuhiko Terai <genuine@ma4.justnet.ne.jp> said: > I know that UNIX is not allowed floating point calculation > in the kernel, so RTT estimator is implemented as using int. > However, I don't know the method of calculation of the now RTT, RTO > using t_srtt, t_rttvar in kernel tcpcb and so on. See the function tcp_xmit_timer() in netinet/tcp_input.c. -GAWollman To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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