[openib-general] QP with large starting sequence adds latency to RDMA READ???

[Hal Rosenstock]

On Tue, 2005-09-20 at 19:22, Arlin Davis wrote:
> I just noticed some RDMA read performance issues that seem to be related 
> to the QP starting sequence number. If I set the starting sequence to 1 
> then all is fine but if I set it to 0x10000 then it seems to add ~40us 
> to my 32KB RDMA read operation (polling for completions). Has anyone 
> seen anything like this?
> 
> I am running a PCI-e HCA adapter in a EM64T server.
> 
> RDMA writes and message sends seem to be unaffected.

What application/ULP are you running ?

-- Hal