[openib-general] [ANNOUNCE] Contribute RDS (ReliableDatagramSockets) to OpenIB

[Rimmer, Todd]

> Bob wrote,
> Perhaps if tunneling udp packets over RC connections rather than
> UD connections provides better performance, as was seen in the RDS
> experiment, then why not just convert
> IPoIB to use a connected model (rather than datagrams)
> and then all existing IP upper level
> protocols would could benefit, TCP, UDP, SCTP, ....

This would miss the second major improvement of RDS, namely removing the need for the application to perform timeouts and retries on datagram packets.  If Oracle ran over UDP/IP/IPoIB it would not be guaranteed a loss-less reliable interface.  If UDP/IP/IPoIB provided a loss-less reliable interface it would likely break or affect other UDP applications which are expecting a flow controlled interface.

Todd Rimmer