[openib-general] Immediate data question

[Tang, Changqing]

>     Changqing> 	Does this pending SEND_WITH_IMM message 
> affect the
>     Changqing> performance of the receiver process ? Is this message
>     Changqing> buffered in the receiver's HCA, or the sender retry and
>     Changqing> get RNR ack until receiver posts a receive ?
> 
> If no receive is pending, then the responder sends an RNR NAK 
> and the sender will wait for the RNR timeout and retry, etc.

What I mean is that, is there any performance penalty for receiver's
overall performance if RNR happens continuously on one of the QP ?

--CQ


> 
>  - R.
>