Comment # 153 on bug 1112824 from Dead Mozay

(In reply to Timo Jyrinki from comment #152)
> Thanks everyone for your continued investigations. Let's not despair, the
> solutions are there somewhere :)
> 
> (In reply to Dead Mozay from comment #151)
> > there is definitely progress, but visually almost nothing changes.
> 
> In your going through GNOME stack patches, did you find anything suspicious
> we're carrying that might be causing performance drops and should be dropped
> if not upstreamed? And dropping non-upstreamable patches is a good idea
> overall.

Unfortunately, I did not find anything concrete, except for the regressions in
mozjs60, which are corrected by a regular update to a more recent version of
this library, I also noticed a strange sqlite behavior, but after a while it
disappeared, apparently then some background operations went, and the
tracker-miners also behave the same way, after turning off the PC, it began to
work quietly, when turned on, I constantly howled even in idle time. but all
this did not lead to the desired result, Is that update mozjs fixed some
animations

> I wouldn't (necessarily, unless having fun of course) spend time on doing
> things other distributions aren't doing, but finding the differences.
> 
> Surely that's yet another part of the equation, but I've also tweaked my
> performance policies to be balance_performance which matches other
> distributions. And I've disabled hyperthreading, and using
> spectre_v2=retpoline. All of that makes things better, but not comparable to
> other distros.

For my PC and laptop, only the disabling of hyper threading is relevant now,
the rest is no longer affected

> It's nice though that Phoronix confirms that we're not all crazy.

I agree, when I started saying almost a year ago that there was a problem in
GNOME, no one believed me, everyone claimed that everything was fine, then I
decided that the problem could be in my hardware, but later at the presentation
on the release day Leap 15 showed a laptop with installed Leap 15, and there it
was already clear that lags are present, these lags were caused by the enabled
SMT, then everything started with them, the performance drop was already
noticeable in GNOME 3.28, but there is also an interesting point, GNOME 3.26
and 3.28 are susceptible to memory leakage but openSUSE is the only Linux
distribution the tributary was at that time where there were no memory leaks in
GNOME 3.28, but there was a performance drop, I then considered that a patch
was corrected for leaks, but slightly degrading performance, I hoped that with
the next release it would be better, but as it turned out worse