Re: [PATCH rdma-next] RDMA/rdmavt: Decouple QP and SGE lists allocations

[Jason Gunthorpe]

On Thu, May 13, 2021 at 03:03:43PM -0400, Dennis Dalessandro wrote:
> On 5/12/21 8:50 AM, Leon Romanovsky wrote:
> > On Wed, May 12, 2021 at 12:25:15PM +0000, Marciniszyn, Mike wrote:
> > > > > Thanks Leon, we'll get this put through our testing.
> > > > 
> > > > Thanks a lot.
> > > > 
> > > > > 
> > > 
> > > The patch as is passed all our functional testing.
> > 
> > Thanks Mike,
> > 
> > Can I ask you to perform a performance comparison between this patch and
> > the following?
> 
> We have years of performance data with the code the way it is. Please
> maintain the original functionality of the code when moving things into the
> core unless there is a compelling reason to change. That is not the case
> here.

Well, making the core do node allocations for metadata on every driver
is a pretty big thing to ask for with no data.

Jason