Comment 26 for bug 1833281

So overall, this seems to indicate a regression between kernel 4.10.x (I'm pretty sure I tested all ok with 4.10.15?) and the newer 4.11 and 4.12 builds.

I made contact with Rik van Riel and Ying Huang (which I will attempt to add to this as a CC for comment?) - they don't believe it is a swapping issue - however Rik seems to believe that:

> > There is ZERO swap space in use.
> >
> > In other words, it is not actually swapping,
> > but thrashing through the page cache.

You may want to email the people who worked on page cache
replacement stuff recently, and the linux-mm mailing list
as well.