Date: Wed, 29 Jun 2005 19:42:43 +0200 From: Jens Schweikhardt <schweikh@schweikhardt.net> To: John Baldwin <jhb@FreeBSD.org> Cc: freebsd-current@FreeBSD.org, phk@FreeBSD.org Subject: Re: Timekeeping hosed by factor 3, high lapic[01] interrupt rates Message-ID: <20050629174243.GA762@schweikhardt.net> In-Reply-To: <200506281729.22302.jhb@FreeBSD.org> References: <20050516113420.GA786@schweikhardt.net> <200506271529.22790.jhb@FreeBSD.org> <20050628210749.GA763@schweikhardt.net> <200506281729.22302.jhb@FreeBSD.org>
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John et al, # Can you get the same ntpdate output for the kernel without the patch? Sure; boot with kern.smp.disabled=1. Script started on Wed Jun 29 19:33:39 2005 # /etc/rc.d/ntpd stop Stopping ntpd. # ntpdate 192.53.103.103; sleep 10; ntpdate 192.53.103.103 29 Jun 19:34:10 ntpdate[602]: adjust time server 192.53.103.103 offset -0.393914 sec 29 Jun 19:34:21 ntpdate[604]: adjust time server 192.53.103.103 offset -0.391510 sec # sysctl kern.timecounter.hardware=i8254 kern.timecounter.hardware: TSC -> i8254 # ntpdate 192.53.103.103; sleep 10; ntpdate 192.53.103.103 29 Jun 19:35:09 ntpdate[616]: step time server 192.53.103.103 offset 7.003573 sec 29 Jun 19:36:02 ntpdate[618]: step time server 192.53.103.103 offset 42.615163 sec # sysctl kern.timecounter.hardware=TSC kern.timecounter.hardware: i8254 -> TSC # ntpdate 192.53.103.103; sleep 10; ntpdate 192.53.103.103 29 Jun 19:36:21 ntpdate[620]: step time server 192.53.103.103 offset 9.605683 sec 29 Jun 19:36:31 ntpdate[622]: adjust time server 192.53.103.103 offset 0.002316 sec Script done on Wed Jun 29 19:36:53 2005 Regards, Jens -- Jens Schweikhardt http://www.schweikhardt.net/ SIGSIG -- signature too long (core dumped)
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