I tried kernel cmd line option isolcpus= then running the test on the isolated
cpu. It is still faster in the terminal. I tried Ubuntu 18 with the same
binary, can't repeat it. Only repeatable with Fedora 32 with kernel 5.7.7 and
kernel 5.6.14...
__
I am using FC32 on a AMD 3970X with HT off.
I have a program which maps a System V shm segment using huge pages, then
references random locations for 10 seconds to find what the latency of memory
is.
The funny thing is, the latency is better when printing to a terminal (xterm)
under Xwayland,
