Bill Davidsen wrote: > Al Boldi wrote: > >Toby DiPasquale wrote: > >>On 9/19/05, Al Boldi <a1426z@xxxxxxxxx> wrote: > >>>>>Pure TCP. How do you unlimit the TCP connection? > > > >The system is idle. > >One connection gets ~70% throughput. > >Two connections get ~90% total throughput. > > > >>>Window size maybe. > >>>Is this tunable per connection? > >> > >>Yes, but not to the level you might want. See W. Richard Stevens' UNIX > >>Network Programming for the particular socket options that can be > >>played with (TCP_MAXSEG and TCP_WINDOW_CLAMP, in this case; man 7 tcp > >>will also be enlightening). > > > >Good info! > > To some degree you ARE tuning the window size with multiple streams, the > number of unacknowledged bytes will be the sum of all streams. This > problem gets worse with long latency times, getting throughput up > locally is usually possible, while getting good transfer rates over high > latency links is much harder. Very true! It also seems that transfer rates are sensitive to latency fluctuations due to system load. Is there a way to buffer this? Thanks! -- Al - : 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
