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Tue, 23 Mar 2021 09:11:59 +0000 (UTC) Date: Tue, 23 Mar 2021 10:11:46 +0100 From: Michael Gmelin To: monochrome Cc: freebsd-current@freebsd.org Subject: Re: freebsd 13 ryzen micro stutter Message-ID: <20210323101146.18c9a969@bsd64.grem.de> In-Reply-To: References: X-Face: $wrgCtfdVw_H9WAY?S&9+/F"!41z'L$uo*WzT8miX?kZ~W~Lr5W7v?j0Sde\mwB&/ypo^}> +a'4xMc^^KroE~+v^&^#[B">soBo1y6(TW6#UZiC]o>C6`ej+i Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAAJFBMVEWJBwe5BQDl LASZU0/LTEWEfHbyj0Txi32+sKrp1Mv944X8/fm1rS+cAAAACXBIWXMAAAsTAAAL EwEAmpwYAAAAB3RJTUUH3wESCxwC7OBhbgAAACFpVFh0Q29tbWVudAAAAAAAQ3Jl YXRlZCB3aXRoIFRoZSBHSU1QbbCXAAAAAghJREFUOMu11DFvEzEUAGCfEhBVFzuq AKkLd0O6VrIQsLXVSZXoWE5N1K3DobBBA9fQpRWc8OkWouaIjedWKiyREOKs+3PY fvalCNjgLVHeF7/3bMtBzV8C/VsQ8tecEgCcDgrzjekwKZ7TwsJZd/ywEKwwP+ZM 8P3drTsAwWn2mpWuDDuYiK1bFs6De0KUUFw0tWxm+D4AIhuuvZqtyWYeO7jQ4Aea 7jUqI+ixhQoHex4WshEvSXdood7stlv4oSuFOC4tqGcr0NjEqXgV4mMJO38nld4+ xKNxRDon7khyKVqY7YR4d+Cg0OMrkWXZOM7YDkEfKiilCn1qYv4mighZiynuHHOA Wq9QJq+BIES7lMFUtcikMnkDGHUoncA+uHgrP0ctIEqfwLHzeSo+eUA66AqzwN6n 2ZHJhw6Qh/PoyC/QENyEyC/AyNjq74Bs+3UH0xYwzDUC4B97HgLocg1QLYgDDO1v f3UX9Y307Ew4AHh67YAFFsxEpkXwpXY3eIgMhAAE3R19L919nNnuD2wlPcDE3UeT L2ytEICQib9BXgS2fU8PrD82ToYO1OEmMSnYTjSqSv9wdC0tPYC+rQRQD9ESnldF CyqfmiYW+tlALt8gH2xrMdC/youbjzPXEun+/ReXsMCDyve3dZc09fn2Oas8oXGc Jj6/fOeK5UmSMPmf/jL+GD8BEj0k/Fn6IO4AAAAASUVORK5CYII= MIME-Version: 1.0 Content-Type: text/plain; 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RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-current] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Mar 2021 09:12:08 -0000 On Mon, 22 Mar 2021 23:50:52 -0400 monochrome 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 Try running with powerd disabled. Try disabling acpi_thermal (debug.acpi.disabled="thermal") as stated in https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234455#c9 Certainly someone else has better ideas though. Best, Michael -- Michael Gmelin