Hi there, my pause are not that often ( with steal_thresh=2) , maybe is around 30 secs or so. If i set the thresh to 1 or 0 they go away. Now im trying with =2 and schedgraph.d. Santi On 3/25/21 10:04 AM, Alastair Hogge wrote: > On 2021-03-23 17:34, myfreeweb wrote: >> On March 23, 2021 9:11:46 AM UTC, Michael Gmelin <freebsd_at_grem.de> wrote: >>> >>> On Mon, 22 Mar 2021 23:50:52 -0400 >>> monochrome <monochrome_at_twcny.rr.com> wrote: >>> >>>> After about 8 months of struggling to narrow this down I did another >>>> search and saw this: >>>> >>>> https://www.reddit.com/r/freebsd/comments/lc8fwo/freebsd_13_vega_64_micro_stutter_in_x/ >>>> >>>> I haven't seen this come up here so I thought I would bring it up. >>>> >>>> My story started sometime before around August last year when synergy >>>> started getting really annoying with stuttering. Pretty sure it >>>> wasn't like that when I first started tracking 13-current in around >>>> May 2020 (I was on 12 with scfb for a long time before that with no >>>> issues), but since then I have tried to eliminate as many variables >>>> as possible. First I switched to barrier instead of synergy. Shortly >>>> after that I realized it was happening all the time and not just a >>>> network problem, I started using foobillard to verify during tests. I >>>> tried different RAM combinations, different network cards, a variety >>>> of RAM timings, stripping rc.conf etc, powerd settings, also scfb, >>>> with no effect. It is observable with ping -f, a dot or two appears >>>> every time it glitches. It seemed much better with RC2, but now with >>>> RC3 it seems to be back with a vengeance, and since its my main >>>> workstation and barrier/synergy server host for several machines, it >>>> is unbearable to use. Both Win10 and devuan3 on the same machine are >>>> smooth with no issues. Any feedback or info would be appreciated. >>>> >>>> Hardware: >>>> ASRock B450M Pro4 >>>> Ryzen 2400G, no OC >>>> 32M DDR4-2933 >>>> Onboard Vega GPU, drm-fbsd13-kmod >>>> _______________________________________________ >>> Without knowing much about the issue at hand, just a few ideas: >>> >>> Sysctls I would look at: >>> - raising *.cx_lowest >>> - different kern.eventtimer.timer >> 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. > I have noticed this too, firefox exhibits the issue frequently, however > I have > found it most noticeable in games/dhewm3[0] or Yamagi Quake 2[1]. There > is a distinct pause every 3 or 4 seconds where the simulation advances > significantly. Thanks for the kern.sched.steal_thresh pointer that has > sorted > the issue out for now. > > $ dmesg | egrep '(CPU:|avail memory)' > CPU: AMD Ryzen 9 3950X 16-Core Processor (3500.02-MHz > K8-class CPU) > avail memory = 66779394048 (63685 MB) > With an AMD NAVI 8GiB GPU, the host should be able to play either game > well enuf, > Quake 2 came out in 1997 and Doom 3 2004. I am sure Quake 2 used to play > without issues on my old AMD bulldozer. > > > 0: https://www.freshports.org/games/dhewm3/ > 1: https://github.com/yquake2/yquake2 > _______________________________________________ > freebsd-current_at_freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe_at_freebsd.org"Received on Sat Mar 27 2021 - 09:39:45 UTC
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