Timekeeping hosed by factor 3, high lapic[01] interrupt rates
Jens Schweikhardt
schweikh at schweikhardt.net
Thu Jun 23 20:59:21 GMT 2005
John et al,
On Wed, Jun 22, 2005 at 10:57:47AM -0400, John Baldwin wrote:
# On Tuesday 21 June 2005 03:51 pm, Jens Schweikhardt wrote:
# > John,
# >
# > # > See
# > http://lists.freebsd.org/pipermail/freebsd-current/2005-May/050210.html # >
# > for the whole thread.
# > #
# > # I did glance over it, but I don't really have time to read every e-mail
# > on # current@ in detail. :( Do you have verbose dmesg's for both cases?
# > If so, # can you get the 'lapic: Divisor' lines from each boot?
# >
# > Sure, they are the same:
# > lapic: Divisor 2, Frequency 99829738 hz
# >
# > It appears Chris Gilbert has the same problem, see "Timekeeping gone
# > whack in 6-CURRENT" on this list.
#
# Ok, this is weird. Does this happen if you disable SMP via
# 'kern.smp.disabled=1' from the loader?
No, with "set kern.smp.disabled=1" at the loader prompt,
timekeeping is ok and vmstat -i displays
interrupt total rate
irq1: atkbd0 684 3
irq13: npx0 1 0
irq14: ata0 63 0
irq15: ata1 109 0
irq18: em0 27 0
irq24: ahd0 23192 106
irq25: ahc0 16 0
lapic0: timer 430979 1986
Total 455071 2097
Regards,
Jens
--
Jens Schweikhardt http://www.schweikhardt.net/
SIGSIG -- signature too long (core dumped)
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