Comment 2 for bug 1887412

In general we very likely don't have the in-house expertise to track this down all the way, and my attempts to reproduce this on staging have been unsuccessful (not very surprising given the low frequency). I'm working on an upgrade of our nfs-ganesha backport to the latest version from Ubuntu focal in the hope that this helps, but it is possible that we will not be able to make this significantly better.

(It's still better than all the other available options we know of.)