[ofa-general] Re: Incorrect max_sge reported in mthca device query

[Michael S. Tsirkin]

> The application is NFS-RDMA. NFS keeps it's data as non-contiguous
> arrays of pages. So the motivation is that having a larger SGL allows
> you to support larger data transfers with a single operation. 

What operations are you using? RDMA writes?

If yes, it might be cleaner, and might turn out to be
more efficient, to simply post a list of multiple write WRs,
each with a small number of SGEs.

You can use selective signalling to only get a completion
on the last WR on success.


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MST