Date: Mon, 21 Oct 2002 23:38:26 -0700 (PDT) From: Adida Yoan <yoan.adida@lip6.fr> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/44372: some kernel options prevent NTP clock synchronization Message-ID: <200210220638.g9M6cQdv012283@www.freebsd.org>
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>Number: 44372 >Category: kern >Synopsis: some kernel options prevent NTP clock synchronization >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Oct 21 23:40:01 PDT 2002 >Closed-Date: >Last-Modified: >Originator: Adida Yoan >Release: FreeBSD 4.7-RELEASE i386 >Organization: >Environment: FreeBSD localhost 4.7-RELEASE FreeBSD 4.7-RELEASE #0: Fri Oct 18 16:27:02 CEST 2002 root@localhost:/usr/src/sys/compile/PERSO i386 >Description: When the options HZ=1000 and DEVICE_POLLING are set, the system clock cant synchronize. The ntp configuration is set to use just a single (stratum 2) server. In this configuration, the system clock will drift a lot (about 1 second every 10 NTP "seconds"). >How-To-Repeat: device fxp options HZ=1000 options DEVICE_POLLING binaries and kernel updated by cvsup to *default release=cvs tag=RELENG_4_7_0_RELEASE or *default release=cvs tag=RELENG_4_6_2_RELEASE Just add the kernel options (i am using fxp but i think the result would be the same with any other device) on any of the above configurations (4.6.2 or 4.7), and run ntp as a client To checkout the problem do a ntpq -c peer >Fix: >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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