We have an application where multiple clients are downloading files from a QNX based file server.

It is running QNX 6.3.2, using io-net.

In reviewing wireshark data, it appears as though the QNX system, even though it is sending data to multiple clients, 
will send a burst of packets to one client, wait for an acknowledgement before sending data to any other client.

We've noticed on other OS's (Windows for example) will send a burst of packets to one client, then immediately send data
 to the next client w/o waiting for the first to respond.

If we have say a number of gigabit clients and one 100Mbit client connected to the QNX box, the 100Mbit client seems to 
cause  overall  throughput to drop for this reason.

What can we do to get QNX to send data to everyone while waiting for ack's?

Thanks
Kevin