freebsd 13 ryzen micro stutter

Santiago Martinez sm at
Mon Apr 5 09:26:03 UTC 2021

Hi Alastair and Hans,  I just realized that my email went out blank.

i did some further testing with the mentioned patch and I still have 
stutter, less often but more pronounced.

I went back an set "kern.sched.steal_thresh=1" and that completely 
clears it, and machine works more smoothly.


On 3/31/21 10:35 AM, Alastair Hogge wrote:
> On 2021-03-28 16:09, Hans Petter Selasky wrote:
>> On 3/27/21 11:54 AM, Santiago Martinez wrote:
>>> Hi, i have the same output as @Nils B. If i run with steal =2 and dtrace the micro stutter doesn't happen but as soon as i stop the dtrace script it the stutters come back again.
>> Here is a patch which you can try. Not sure if it helps.
> Thanks Hans, this reduces jitter somewhat, but it still noticeable in
> Quake2. I left kern.sched.steal_thresh at 1.
> To good health,
> Alastair.
> _______________________________________________
> freebsd-current at mailing list
> To unsubscribe, send any mail to "freebsd-current-unsubscribe at"

More information about the freebsd-current mailing list