On Mon, 22 May 2006 19:51:33 +0800 [EMAIL PROTECTED] wrote: > Hi, > I want to transmit data between host A and host B. The link > between these two hosts is really bad: PING reports 30% packet loss > and about 60 ms return delay. This means if timed out for 1 second, > the data must have been lost. > I keep "net.inet.tcp.rexmit_min" and "net.inet.tcp.rexmit_slop" > untouched. But TCPDUMP tells me that if some data are lost, > re-transmission will be done 64 seconds after last transmission! > How to quicken TCP re-transmission? > How to tune "net.inet.tcp.rexmit_min" and > "net.inet.tcp.rexmit_slop"?
You can take a look at SCPS - http://www.scps.org/ Their protocol is used on lossy links with big latency and packet loss (such as satellites) and overcomes shortcomings of TCP. It works with divert mechanism of FreeBSD and I ported the tap device part as well to both NetBSD / FreeBSD (experimental). Cheers, Marcin. _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
