> On Tue, Oct 18, 2016 at 09:34:33AM -0500, Steve Wise wrote: > > > 1) we believe the iSER + RW API correctly sizes the SQ, yet we're seeing SQ > > overflows. So the SQ sizing needs more investigation. > > NFS had this sort of problem - in that case it was because the code > was assuming that a RQ completion implied SQ space - that is not > legal, only direct completions from SQ WCs can guide available space > in the SQ.. > Agreed. And this could be the case Bharat is hitting. (I wonder if there is a clever way we can tell?) I don't see I the code that isert flow controls SQ WR submission based on SQ completions. It would be nice to have some core API, maybe in rdma-rw, that could handle this by queuing and processing when the SQ has resources... Steve. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
