Re: Timekeeping hosed by factor 3, high lapic[01] interrupt rates

From: Jens Schweikhardt <schweikh_at_schweikhardt.net>
Date: Wed, 29 Jun 2005 19:42:43 +0200
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)
Received on Wed Jun 29 2005 - 15:43:11 UTC

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