From owner-freebsd-bugs@freebsd.org Mon Mar 9 23:41:31 2020 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id C2BC02503AD for ; Mon, 9 Mar 2020 23:41:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 48bvrC31Ddz4Zmp for ; Mon, 9 Mar 2020 23:41:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 2C08D2503AC; Mon, 9 Mar 2020 23:41:31 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 2B9532503AB for ; Mon, 9 Mar 2020 23:41:31 +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) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 48bvrB6HF0z4Zm4 for ; Mon, 9 Mar 2020 23:41:30 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) 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) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id A8A7B1A9C7 for ; Mon, 9 Mar 2020 23:41:30 +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 029NfUWe081886 for ; Mon, 9 Mar 2020 23:41:30 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 029NfU5x081885 for bugs@FreeBSD.org; Mon, 9 Mar 2020 23:41:30 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: bugs@FreeBSD.org Subject: [Bug 244705] /usr/src/sys/x86/x86/tsc.c: System Clock is 0.3% slow since r352684 Date: Mon, 09 Mar 2020 23:41:30 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: theron@freebsd.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Mar 2020 23:41:31 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D244705 Bug ID: 244705 Summary: /usr/src/sys/x86/x86/tsc.c: System Clock is 0.3% slow since r352684 Product: Base System Version: CURRENT Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: theron@freebsd.org Created attachment 212294 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D212294&action= =3Dedit reverts the breaking change After switching from 12.1-RELEASE to CURRENT I noticed audio driver appeare= d to be consuming samples too fast by about 0.3%. However after verifying audio devices are working properly I discovered that system clock is actually slo= w by 0.3% (confirmed by using ntpdate to compare with time server). This is not a hardware fault since I can reliably get correct clock by boot= ing 12.1-RELEASE or CURRENT r352683 but slow clock with CURRENT since r352684 unless reverting that change. hw.model: Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz. --=20 You are receiving this mail because: You are the assignee for the bug.=