> combining > sysctl net.inet.tcp.sendspace=131072 > and > sysctl net.inet.tcp.inflight.enable=0 > > did the trick! Congratulations! But I wonder why the throughput of FreeBSD=>Linux was almost equal to that of Linux=>FreeBSD. If the settings above improves the throughput of FreeBSD=>FreeBSD, the throughput of FreeBSD=>Linux would also be improved with them. Is it improved? > now can someone remind me what inflight does? In my understanding, it tries to estimate bandwidth-delay product and tries to avoid injecting too much data segments into networks. So, if it underestimates bandwidth-delay product, throughtput may be reduced. Regards, Noritoshi Demizu _______________________________________________ freebsd-stable@xxxxxxxxxxx mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscribe@xxxxxxxxxxx"