At 05:02 PM 5/20/2008, Roland Dreier wrote: > > > The idea is that for selective > > signaling QPs, before you stamp the WQE, you read the value of the DS > > field which denotes the effective size of the descriptor as used in the > > previous post, and stamp only that area, relying on the fact that the > > rest of the descriptor is already stamped. > >Does it make a measurable difference? If so then it seems like a good idea.
I'll be happy to try it, but I bet it'll be hard to measure the difference with a storage workload. It sounds like a bit of a micro-optimization at the HCA interface, avoiding a few DMA cycles? I didn't see a URL so let me know if so. Tom. _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
