> > 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?
> 
i did the sysctl on the client/sender :-)

> > 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


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