http://bugzilla.opensuse.org/show_bug.cgi?id=1112824 http://bugzilla.opensuse.org/show_bug.cgi?id=1112824#c167 --- Comment #167 from Timo Jyrinki <tjyrinki@suse.com> --- With confirming I largely mean the same you do by supporting :) I mean it's confirmed there is a problem somewhere, and like I said I'm aware that this video does not bring anything new to the table regarding fixing the problem. Sometimes a video is just easier to consume than subjective observations over multiple reboots, so I thought it'd be nice to have a direct comparison video. My current best but not necessarily very good guess about the root cause for the main performance degradation is some openSUSE specific patch(es) somewhere in GNOME stack / libraries it uses. I'm also interested to see if there's anything meaningful changing once transition from libmozjs52 to libmozjs60 is complete - but I do see my TW is already using the latter for gnome-shell at least. Regarding some of the different factors you mentioned, I believe it's not something Ubuntu has added, since Fedora (reportedly, I should test at some point myself) performs as well as Ubuntu, and it's unlikely both Fedora and Ubuntu would carry a non-upstreamed critical patch for such a long time. The problem has also persisted for several months, so there has been ample time for all the development versions of the distributions to at least somewhat get "in sync", and all of them have had eg the same upstream GNOME 3.30 stack that is currently in openSUSE Tumbleweed. Some person in this thread has, in addition to the kernel parameters mentioned, tried running Fedora kernel directly in openSUSE without a big help, so it seems the kernel alone does not fix the lagginess. Surely the hyper-threading disabling and IBRS -> retpoline help, but as seen on the video not enough to get on par and no other distribution of course needs to disable hyper-threading. So here's just my summary of my current thinking. When I have extra time I always try to think of something new to try or study, but my main requirement was to get a usable desktop for doing other work with SUSE, which I now have with the workarounds. Something on my mind is to check that 20181015 <-> 20181018 snapshot delta mentioned in comment #160 and see if the difference is as big as what I have there on the video between distributions. -- You are receiving this mail because: You are on the CC list for the bug.