Comment # 86 on bug 1112824 from Dead Mozay

(In reply to Takashi Iwai from comment #85)
> (In reply to Dead Mozay from comment #84)
> > > Are you testing Fedora kernel with openSUSE user-space stuff?  Or are you
> > > testing Fedora user-space?
> > > 
> > > If Fedora kernel works better with openSUSE user-space, then the point
> > > should be either Fedora's downstream patch or the difference of the kernel
> > > configuration.
> > > 
> > > For the latter case, you can try to build the upstream kernel with Fedora
> > > kernel config and see whether it works.
> > 
> > I tried to build the kernel with the fedora config, I even wrote about it
> > somewhere above, it works better, but there are still some problems,
> 
> If you still have the same performance problem with a self-built upstream
> kernel using the Fedora config, then it's really something else than kernel.
> 
> If something is *improved* by the Fedora kernel config, though, we'd like to
> see the difference.  You can try the following:
> 
> - Boot with Fedora config kernel, copy /proc/config.gz to .config on 4.19.x
> Linux kernel tree, and run "make localmodconfig".  This will give you a
> minimal set of kernel config for the currently running kernel.  Save this
> config to somewhere.
> 
> - Similarly, boot with openSUSE kernel, and do the same.  Now you get two
> kernel configs you can directly compare.

https://bugzilla.opensuse.org/show_bug.cgi?id=1112824#c30 this is fedora
config, I only enabled support BTRFS