Re: NFS: 82ms wakeup latency 4.14-rc4

From: Mike Galbraith
Date: Mon Dec 18 2017 - 12:00:25 EST


On Mon, 2017-12-18 at 11:35 -0500, J. Bruce Fields wrote:
>
> Like I say, I don't really understand the issues here, so it's more a
> question than an objection.... (I don't know any reason a
> cond_resched() would be bad there.)

Think of it this way: what all can be queued up behind that kworker
that is hogging CPU for huge swaths of time?  It's not only userspace
that suffers.

-Mike