From owner-freebsd-bugs@freebsd.org Tue Aug 16 11:46:50 2016 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3B8ADBBC81D for ; Tue, 16 Aug 2016 11:46:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 11E191922 for ; Tue, 16 Aug 2016 11:46:50 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id u7GBknZB065102 for ; Tue, 16 Aug 2016 11:46:49 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 211897] horrible time skew under 10.3-R-p7 Date: Tue, 16 Aug 2016 11:46:50 +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: 10.3-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: freebsd-bugzilla@ayaken.net X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: 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 MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Aug 2016 11:46:50 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211897 --- Comment #1 from Martin S. Weber --- This is probably the culprit: from my -p7 dmesg: Aug 16 09:28:15 hephaistos kernel: Timecounter "TSC-low" frequency 11098724= 66 Hz quality 1000 vs.=20 Timecounter "TSC-low" frequency 2000036900 Hz quality 1000 on -p4 Here's a grep -i time /var/run/dmesg.boot (i.e., -p4): Event timer "LAPIC" quality 600 hpet0: iomem 0xfed00000-0xfed003ff on acpi0 Timecounter "HPET" frequency 14318180 Hz quality 950 Event timer "HPET" frequency 14318180 Hz quality 550 atrtc0: port 0x70-0x77 irq 8 on acpi0 Event timer "RTC" frequency 32768 Hz quality 0 attimer0: port 0x40-0x43,0x50-0x53 irq 0 on acpi0 Timecounter "i8254" frequency 1193182 Hz quality 0 Event timer "i8254" frequency 1193182 Hz quality 100 Timecounter "ACPI-fast" frequency 3579545 Hz quality 900 acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1808-0x180b on acpi0 Timecounters tick every 1.000 msec Timecounter "TSC-low" frequency 2000036900 Hz quality 1000 Here's the same for the -p7:=20 Aug 16 09:28:15 hephaistos kernel: Event timer "LAPIC" quality 600 Aug 16 09:28:15 hephaistos kernel: hpet0: iomem 0xfed00000-0xfed003ff on acpi0 Aug 16 09:28:15 hephaistos kernel: Timecounter "HPET" frequency 14318180 Hz quality 950 Aug 16 09:28:15 hephaistos kernel: Event timer "HPET" frequency 14318180 Hz quality 550 Aug 16 09:28:15 hephaistos kernel: atrtc0: port 0x70-0x= 77 irq 8 on acpi0 Aug 16 09:28:15 hephaistos kernel: Event timer "RTC" frequency 32768 Hz qua= lity 0 Aug 16 09:28:15 hephaistos kernel: attimer0: port 0x40-0x43,0x50-0x53 irq 0 on acpi0 Aug 16 09:28:15 hephaistos kernel: Timecounter "i8254" frequency 1193182 Hz quality 0 Aug 16 09:28:15 hephaistos kernel: Event timer "i8254" frequency 1193182 Hz quality 100 Aug 16 09:28:15 hephaistos kernel: Timecounter "ACPI-fast" frequency 357954= 5 Hz quality 900 Aug 16 09:28:15 hephaistos kernel: acpi_timer0: <24-bit timer at 3.579545MH= z> port 0x1808-0x180b on acpi0 Aug 16 09:28:15 hephaistos kernel: Timecounters tick every 1.000 msec Aug 16 09:28:15 hephaistos kernel: Timecounter "TSC-low" frequency 11098724= 66 Hz quality 1000 --=20 You are receiving this mail because: You are the assignee for the bug.=