From nobody Tue Sep 10 15:39:38 2024 X-Original-To: multimedia@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4X37DV4l0gz5W2jN for ; Tue, 10 Sep 2024 15:39:38 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R11" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4X37DV39DFz4rlH for ; Tue, 10 Sep 2024 15:39:38 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1725982778; a=rsa-sha256; cv=none; b=Dx0+rBRvC2gNr97sZ1x2cp1ToeeD+TFWnwdVuPC9P63lMeMAynmb7mcIBUTdlEKka832JH UnkpmKdPu3Fb7LUzRtdF+kTqUmeI4tjMD3SNWkKPGkctPhiajuRXZYIu22v+YZPEOoTvEh /303C4D7D4pZSQoM6QZ7mz7XRKdLSKTYN9htjRh/5sg4+b4+UFeSgSIE/KX+TtHKZ9vww9 iyDJbUFlORLUb4ef67dcbW1an8YOreAZvkiVMqz8jaNjKn9xfd7xu8A46uDyGUByayMXKd 8VtcVDBONjaxVLvP8ViRQXmqRKvGaKsb5FnwQxQ4cNdf2XPT8YXn/ZijeRHDow== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1725982778; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/ZbJvlSDa0mz2NiJ3W+mbFg8spJrkQigVdvGNvDxFRI=; b=iXy7WBKNX/lxCw0LpSq9OvaYFMLXJtQ6tS0+JQwMt1V2S8DB6tuk7k+Dzeixw7/V/aSp3Q XKhy7LrM5sgvQifE9ArbsGkJGIwLXfgFDCZajoD000+/KZ80DpeXaYk9mdXO7hRlbxW/RI In6QOTCstfb4+45BgrB+GF9WDqAW+IcEHlT/74QQoE00Brv7K6L0YNEYM2mIR6JDR6xvfH 89GtQWTiq3Efg8TfrRcAcyLD24viyox3qN6g33ZaENg3FymzuD1sJAayjTY3A0ZDv/m41s A4fnYj9tINfVkegpgbTKvRKipgYutdCiJX/r0Vgrm1SeSTyuCG6TrqdWoVYWrQ== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4X37DV2YD4zsh2 for ; Tue, 10 Sep 2024 15:39:38 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 48AFdc31021646 for ; Tue, 10 Sep 2024 15:39:38 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 48AFdc8O021644 for multimedia@FreeBSD.org; Tue, 10 Sep 2024 15:39:38 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: multimedia@FreeBSD.org Subject: [Bug 260898] audible skips and video jitter during video playback Date: Tue, 10 Sep 2024 15:39:38 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 12.2-STABLE X-Bugzilla-Keywords: needs-qa X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: markj@FreeBSD.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: multimedia@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Multimedia discussions List-Archive: https://lists.freebsd.org/archives/freebsd-multimedia List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-multimedia@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D260898 Mark Johnston changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |markj@FreeBSD.org --- Comment #20 from Mark Johnston --- A while back I investigated and fixed a number of scheduler bugs which could cause CPUs to go idle with non-empty runqueues. This manifested as hard-to-reproduce latency spikes in various workloads. I have no proof, no= r a good way to prove it, but it might be that those patches fixed your problem= s as well. ryzen/threadripper CPUs were especially susceptible to these races f= or some reason. The main fixes were: https://cgit.freebsd.org/src/commit/?id=3D6d3f74a14a83b867c273c6be2599da182= a9b9ec7 https://cgit.freebsd.org/src/commit/?id=3D03f868b163ad46d6f7cb03dc46fb83ca0= 1fb8f69 https://cgit.freebsd.org/src/commit/?id=3Da889a65ba36985dfb31111ac1607be35c= a2b2c8c If you have a simple recipe for reproducing any lingering jitter problems, = it would be nice to see it, but these problems are quite hard to debug without= a reliable reproducer. --=20 You are receiving this mail because: You are the assignee for the bug.=