> > Trying to limit the number of QPs that an app can allocate, > > therefore, just limits how much of the address space an app can use. > > There's no clear link between QP limits and HW resource limits, > > unless you assume a very specific underlying implementation. > > Isn't that the point though? We have several vendors with hardware > that does impose hard limits on specific resources. There is no way to > avoid that, and ultimately, those exact HW resources need to be > limited.
My point is that limiting the number of QPs that an app can allocate doesn't necessarily mean anything. Is allocating 1000 QPs with 1 entry each better or worse than 1 QP with 10,000 entries? Who knows? > If we want to talk about abstraction, then I'd suggest something very > general and simple - two limits: > '% of the RDMA hardware resource pool' (per device or per ep?) > 'bytes of kernel memory for RDMA structures' (all devices) Yes - this makes more sense to me. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
