Re:Turtles on the Wire: Understanding How the OS Uses the Mo...
by ra1n85 on Monday April 03, 2017 @11:16AM
(#14023357)
Flow-control as in ECN or Ethernet/pause?
Loss is inevitable in most cloud network fabrics due to the use of shallow buffer commodity ASICs, the amount of fan-in, and the reliance on tenants to use the network in a typical manner (don't fragment, don't encap, preserve entropy).
RDMA is going to be tough - microseconds count, you can't wait for TCP to retrans, and UDP doesn't provide the reliability needed. A new transport protocol is likely the answer.
Loss is inevitable in most cloud network fabrics due to the use of shallow buffer commodity ASICs, the amount of fan-in, and the reliance on tenants to use the network in a typical manner (don't fragment, don't encap, preserve entropy).
RDMA is going to be tough - microseconds count, you can't wait for TCP to retrans, and UDP doesn't provide the reliability needed. A new transport protocol is likely the answer.