From owner-freebsd-current@freebsd.org Tue Mar 10 05:39:01 2020 Return-Path: Delivered-To: freebsd-current@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 4A3BC258FAA for ; Tue, 10 Mar 2020 05:39:01 +0000 (UTC) (envelope-from peter@rulingia.com) Received: from vtr.rulingia.com (vtr.rulingia.com [IPv6:2001:19f0:5801:ebe:5400:1ff:fe53:30fd]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "vtr.rulingia.com", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 48c3md5647z4Fdb for ; Tue, 10 Mar 2020 05:38:56 +0000 (UTC) (envelope-from peter@rulingia.com) Received: from server.rulingia.com (ppp239-208.static.internode.on.net [59.167.239.208]) by vtr.rulingia.com (8.15.2/8.15.2) with ESMTPS id 02A5cdUA019118 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 10 Mar 2020 16:38:44 +1100 (AEDT) (envelope-from peter@rulingia.com) X-Bogosity: Ham, spamicity=0.000000 Received: from server.rulingia.com (localhost.rulingia.com [127.0.0.1]) by server.rulingia.com (8.15.2/8.15.2) with ESMTPS id 02A5cXi9013480 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 10 Mar 2020 16:38:33 +1100 (AEDT) (envelope-from peter@server.rulingia.com) Received: (from peter@localhost) by server.rulingia.com (8.15.2/8.15.2/Submit) id 02A5cXtB013479; Tue, 10 Mar 2020 16:38:33 +1100 (AEDT) (envelope-from peter) Date: Tue, 10 Mar 2020 16:38:33 +1100 From: Peter Jeremy To: Theron Cc: FreeBSD Current Subject: Re: System clock is slow Message-ID: <20200310053833.GD3091@server.rulingia.com> References: <989cd36a-e015-940a-dfe2-851c6fdf4734@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="8NvZYKFJsRX2Djef" Content-Disposition: inline In-Reply-To: <989cd36a-e015-940a-dfe2-851c6fdf4734@gmail.com> X-PGP-Key: http://www.rulingia.com/keys/peter.pgp User-Agent: Mutt/1.12.2 (2019-09-21) X-Rspamd-Queue-Id: 48c3md5647z4Fdb X-Spamd-Bar: ------- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of peter@rulingia.com designates 2001:19f0:5801:ebe:5400:1ff:fe53:30fd as permitted sender) smtp.mailfrom=peter@rulingia.com X-Spamd-Result: default: False [-7.48 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.98)[-0.980,0]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; TAGGED_RCPT(0.00)[]; MIME_GOOD(-0.20)[multipart/signed,text/plain]; DMARC_NA(0.00)[rulingia.com]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; SIGNED_PGP(-2.00)[]; FREEMAIL_TO(0.00)[gmail.com]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; ASN(0.00)[asn:20473, ipnet:2001:19f0:5800::/38, country:US]; RCVD_TLS_ALL(0.00)[]; IP_SCORE(-3.10)[ip: (-9.50), ipnet: 2001:19f0:5800::/38(-4.13), asn: 20473(-1.83), country: US(-0.05)] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 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, 10 Mar 2020 05:39:01 -0000 --8NvZYKFJsRX2Djef Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2020-Mar-09 19:59:09 -0400, Theron wrote: >Since switching from 12.1-RELEASE to CURRENT I've noticed timing=20 >problems with audio applications.=A0 It turns out that the problem is not= =20 >with the audio drivers, but with the system clock driver, which now=20 >reports passage of time 0.3% too slow.=A0 Although I discovered this only= =20 >recently, it's been broken since r352684 made on Sept. 25.=A0 Has anyone= =20 >else noticed? Note that r352684 was MFC'd to both 11-stable (r353007) and 12-stable (r353006) in early October and I don't recall seeing any adverse reports before this. Are you running NTP? If so, is NTP maintaining lock and what is the reported PLL frequency (ntpq -c kerni)? What does "sysctl kern.timecounter" report and have you tried using any of the alternative timecounters listed in kern.timecounter.choice? Are you overclocking your CPU (or doing anything else non-standard)? --=20 Peter Jeremy --8NvZYKFJsRX2Djef Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEE7rKYbDBnHnTmXCJ+FqWXoOSiCzQFAl5nJ9NfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEVF QjI5ODZDMzA2NzFFNzRFNjVDMjI3RTE2QTU5N0EwRTRBMjBCMzQACgkQFqWXoOSi CzQGqg//TYmdlVgaxpZT35Ck8XhLYvqtJA1taUVLe6jaQntsoRiE2aQmEpp2UlN2 QU4YKqv7WngZc0n0m7drS/4mqeYXKOhaDJQEvBYf9q/iDJDQrzqAz2Wv7vGM/TUL vJ5SWBu3Z/Vz3mJwcd1MCF4lcCbE8jiAu+dZFkDVhjyx+oGV27DmadBUo1ZtJtPn kgeawlctXNI3Mfof2ZhNOrdGWIouNL+kmKQRCM6AeJXBtECXNgqYM5sGU+F9v0E3 CbpgTGaVv8vIXoiq7bvfvUeoVigYgNrSUd5IELDSAXRbZV7RPDhlL9w9OWu0TuJg i8PpX4CFGMeOA944WFLeBYbrNkCftkWOaR0JWsgLLfq/dMekvt/piW3Rag03LeAi mrn7ai6ao63zw9gZnSd/9PGg1nRr0Dp3x7Dm984LAeH5nlpQE+cgx8JpX+TAaKvo ZDfHWqlZra3RCQ71w46F3nS8VJm4wVzDzvdsyN4C5UpALuCpgUQFEXFREZ6Uzdpo yqWH7XLnUNQcfpDh8u5P8FdyoHNK3yxi0Mrd1OGTAR2NvOwZPJihCmIxe+vld272 0yqq9oojwRrDf4dOJM15LLB8WN9qFMP7bc+gqcP+gdi9kl5hWTKKWqlDYluFKzUb aYG9a3oJDSO9EWzTdLH4UPI2ZGFzsuFUv2m0S1fC4IuRjx7t22Q= =i4Cr -----END PGP SIGNATURE----- --8NvZYKFJsRX2Djef--