Hi, On 23.03.21 10:34, myfreeweb wrote: > None of these should be an issue, but: > > sysctl kern.sched.steal_thresh=1 > > For some reason with the default value of 2, I'm seeing weird stuttering in youtube > videos, games, etc. on a 5950X system. 1 (or 0, IIRC) works fine. yes, finally... Using a Ryzen 1700, Asrock AB350 Pro4 and Radeon RX460 and got that awful micro stuttering all the time; not only under FreeBSD 13.0-ALPHA3 now, but also under FreeBSD 12-STABLE in the past. Occurences were during listening to music using MPV (one-second-*krk*-loops); watching YouTube videos (video hangs for a second but audio continues) and often simply during mouse movements where even MouseKeyPress- and MouseKeyRelease-events just didn't reach the system at all. Setting kern.sched.steal_thresh=0 eliminates these micro stutterings in the whole system. I also would really, really like to know the reason why this parameter has such an impact... Many thanks for the hint and BR, NilsReceived on Tue Mar 23 2021 - 13:54:41 UTC
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