[ofa-general] RFC: location for IB CM statistics

[Raleigh F Rinehart]

Sean Hefty wrote:
> I'd like to start adding some statistical information to the IB CM to help
> identify scalability or connectivity issues.  Some example statistics that I
> would like to expose now are number of retried MADs, unmatched requests, total
> number of connections, etc.  Longer term, additional statistics and information
> on each connection could be added.
>
> I'm looking for ideas on the best way to expose this sort of data.  Any
> thoughts?
>
> - Sean
>
>   
This may be way off on a tangent but some users may also benefit from 
the CM exposing these as to mmapable so that one can do RDMA reads to 
gather them.  This is useful in monitoring a large clusters of IB nodes 
as efficiently as possible.  This type of scenario has been discussed 
and researched (see the OSU paper by Panda et. al.).

-raleigh

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