Hi Josh,

On Fri, Jul 3, 2020 at 2:14 AM Josh Hunt [off-list ref] wrote:
{snip}

Initial results with Cong's patch look promising, so far no stalls. We
will let it run over the long weekend and report back on Tuesday.

Paolo - I have concerns about possible performance regression with the
change as well. If you can gather some data that would be great. If
things look good with our low throughput test over the weekend we can
also try assessing performance next week.

We met possibly the same problem when testing nvidia/mellanox's
GPUDirect RDMA product, we found that changing NET_SCH_DEFAULT to
DEFAULT_FQ_CODEL mitigated the problem, having no idea why. Maybe you
can also have a try?

Besides, our testing is pretty complex, do you have a quick test to
reproduce it?

-- 
Thanks,
Jike