Selecting flows to reroute based on bytes remaining as an indicator

A computing system operating in a network fabric including ingress ports and intermediate ports, the computing system comprising:

• a processing resource;
• and
• a storage device storing instructions which when executed by the processing resource comprise instructions to:
• receive, by an ingress port, a first packet of a flow;
• store, in a data structure, a number of bytes remaining in the flow to be transmitted;
• update the number of bytes remaining in the flow in response to receiving from a source of the flow additional messages of the flow and from a destination of the flow acknowledgments (ACKs) corresponding to previously transmitted packets of the flow;
• identify, based on mid-fabric congestion detected by the intermediate ports, a plurality of candidate flows to be rerouted;
• select a first flow from the candidate flows based on a respective number of bytes remaining in the flow, the first flow associated with a first path;
• and
• reroute the first flow to a new path.

A non-transitory computer-readable medium storing instructions which when executed by at least one processing resource comprise instructions to:

• receive, by an ingress port, a first packet of a flow;
• store, in a data structure, a number of bytes remaining in the flow to be transmitted;
• update the number of bytes remaining in the flow in response to receiving from a source of the flow additional messages of the flow and from a destination of the flow acknowledgments (ACKs) corresponding to previously transmitted packets of the flow;
• identify, based on mid-fabric congestion detected by intermediate ports, a plurality of candidate flows to be rerouted;
• select a first flow from the candidate flows based on a respective number of bytes remaining in the flow, wherein the first flow is associated with a first path;
• and
• reroute the first flow to a new path.