I would suggest you look at the tcp congestion avoidance. http://www.mjmwired.net/kernel/Documentation/networking/tcp.txt The Westwood algorithm: Quote "Its authors claim that Westwood is especially good for wireless links or other situations where the loss of an occasional packet may have nothing to do with congestion. " see # cat /proc/sys/net/ipv4/tcp_available_congestion_control Cheers, Pieter E Smit On Thu, Dec 10, 2009 at 11:46 PM, Randy Macleod <macleodr@xxxxxxxxxx> wrote: > Mathew, > > Matthew Hodgson wrote: >> I've got a dedicated 1000Mbps link between two sites with a rtt of 7ms, >> which seems to be dropping about 1 in 20000 packets (MTU of 1500 bytes). >> I've got identical boxes at either end of the link running 2.6.27 >> (e1000e 0.3.3.3-k6), and I've been trying to saturate the link with TCP >> transfers in spite of the packet loss. > > Sorry for the late reply... > > If you just want to avoid the dramatic impact of dropped packets > due to something in the network getting overloaded, > you might consider: > http://www.gridmpi.org/pspacer-1.0/README.en.html > > <quote> > PSPacer achieves precise network bandwidth control and smoothing of > bursty traffic without any special hardware. It is implemented as a > Linux loadable kernel module, i.e. a classful queuing discipline (Qdisc) > module available for traffic control with tc (8) command. > > ... > (2) PSPacer uses the IEEE 802.3x PAUSE frame as a gap between packets. > > </quote> > > Always seemed like a cool idea although I haven't tried it myself. > > Hope this isn't too late to help. > > // Randy > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-net" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
