RE: [RFC] rdma/uverbs: Sketch for an ioctl framework

Hefty, Sean
2016-05-25T22:24:19Z

> Are you hearing people object to number of fds? I've never thought of
> it as such a big deal, epoll makes it very painless to deal with.. Do
> people have scaling issues?

This was an item brought up in the ofiwg requirement gathering phase. Epoll is nice, and it's what libfabric uses internally to hide multiple fd's, but there are still more resources involved, plus additional overhead processing the events. Exascale is one big scaling issue, and large core count systems exacerbate the problems.

- Sean