On Thu, Sep 6, 2018 at 5:43 AM, Johannes Weiner <hannes@xxxxxxxxxxx> wrote: > Peter, do the changes from v3 look sane to you? > > If there aren't any further objections, I was hoping we could get this > lined up for 4.20. That would be excellent. I just retested the latest version at http://git.cmpxchg.org/cgit.cgi/linux-psi.git (Linux 4.18) and the results are great. Test setup: Endless OS GeminiLake N4200 low end laptop 2GB RAM swap (and zram swap) disabled Baseline test: open a handful of large-ish apps and several website tabs in Google Chrome. Results: after a couple of minutes, system is excessively thrashing, mouse cursor can barely be moved, UI is not responding to mouse clicks, so it's impractical to recover from this situation as an ordinary user Add my simple killer: https://gist.github.com/dsd/a8988bf0b81a6163475988120fe8d9cd Results: when the thrashing causes the UI to become sluggish, the killer steps in and kills something (usually a chrome tab), and the system remains usable. I repeatedly opened more apps and more websites over a 15 minute period but I wasn't able to get the system to a point of UI unresponsiveness. Thanks, Daniel
