Hi Sean Sean Hefty wrote on Thu, 19 Nov 2009 at 11:53:56
>> can't anyone get async modify QP today on any platform by just doing >> the operation in another thread (or thread pool)? It seems that the >> operations themselves are heavy enough that thread dispatch, locking >> etc is going to be significant overhead. > > On WinOF this is basically how things are implemented anyway. The lower > level drivers are ports of the Linux drivers and do everything > synchronously. The kernel uverbs equivalent just queues the modify calls > to a kernel thread pool. It's not as efficient as it could be, since it > ends up adding two context switches, but works. > > I could try adding threads to the librdmacm, move the modify calls to > those threads, and see if there's any difference. You'll still need to have the kernel thread pool to support WinVerbs (at least on Windows.) -Fab _______________________________________________ ewg mailing list ewg@lists.openfabrics.org http://lists.openfabrics.org/cgi-bin/mailman/listinfo/ewg
