Comment # 30 on bug 1117833 from Victor Zhestkov

Boris, thanks. I see.
But if I run XOrg and other WM than GNOME, there is no such issue.
I suppose it's not the only issue related to the vulnerability mitigation, but
GNOME also has some issue or issues. Not sure but it could be gnome-shell or
gjs or both. Sometimes there is rather high CPU utilization by gnome-shell and
some messages related to gjs. Probably the issue in GNOME become more
noticeable with vulnerability mitigation issue in the kernel.

And what is the current recommendation about this issue? Avoid using HT and set
spectre_v2=retpoline, right?
I've already tried to turn off all mitigations before, but didn't turn off HT
at that time and as I remember the issue was noticeable on such attempt.

And the other question about vulnerabilities mitigation. What is the best
benchmark to check the difference in performance with different kernel options?
I've seen some benchmarks, but not sure if it was a good idea just to measure
the time of context switches as one of the tests do.