On Wed, Oct 28, 2020 at 02:48:01PM +0100, Jinpu Wang wrote: > On Wed, Oct 28, 2020 at 2:44 PM Jason Gunthorpe <jgg@xxxxxxxxxx> wrote: > > > > On Tue, Oct 13, 2020 at 09:43:42AM +0200, Jack Wang wrote: > > > Currently ipoib choose cq completion vector based on port number, > > > when HCA only have one port, all the interface recv queue completion > > > are bind to cq completion vector 0. > > > > > > To better distribute the load, use same method as __ib_alloc_cq_any > > > to choose completion vector, with the change, each interface now use > > > different completion vectors. > > > > > > Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxx> > > > Reviewed-by: Gioh Kim <gi-oh.kim@xxxxxxxxxxxxxxx> > > > drivers/infiniband/ulp/ipoib/ipoib_verbs.c | 4 ++-- > > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > If you care about IPoIB performance you should be using the > > accelerated IPoIB stuff, the drivers implementing that all provide > > much better handling of CQ affinity. > > > > What scenario does this patch make a difference? > > AFAIK the enhance mode is only for datagram mode, we are using connected mode. And you are using child interfaces or multiple cards? Jason
