[openib-general] How do we prevent starvation say between TCP over IPOIB / and SRP traffic ?

[Richard Frank]

This discussion assumes a single fabric (e.g IB, or iWARP, etc) for
network and file I/O between a set of nodes sharing storage.

On Wed, 2006-04-19 at 12:38 -0400, Richard Frank wrote:
> Some application level protocols - require higher QoS levels than others
> - for various communication and I/O operations. 
> 
> For example, cluster inter-node health msgs have fixed latency
> requirements that if exceeded may result in unexpected node removals
> from the cluster. 
> 
> Are there any mechanisms available to the client process to manage the
> QoS level for the various supported ULPs (SDP,TCP,UDP,RDS,SRP,iSER,etc)
> either at the ULP level or some combination of process and ULP - or
> perhaps even at the connection level ?
> 
> Using the same example, the cluster node monitors might set the
> priority / QoS level of the heart beats to be more important than normal
> SRP/iSER traffic to ensure no starvation ?
> 
> 
> 
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