> > Could it be that some kind of Spectre mitigation is active? I just read > about > some massive performance problems in Kernel 5.19+ on Skylake CPUs. Stable > gentoo kernel was upgraded to 6.1 recently, which could also be affected > by > this problem. > See https://lkml.iu.edu/hypermail/linux/kernel/2209.1/02248.html > > Try turning the mitigations off or revert to a 5.15.x kernel. >
I have one skylake and its now running 6.2 with retbleed=stuff. The others are AMD. I will try 5.15.x. I have .configs from that time so it will rule kernel stuff in/out.
