too short/too long (sys/kern_tc.c)

[Etienne Robillard]

Had this problem for a while.. It seems
to have disappear when booting with acpi enabled??

Dunno what may cause your bug, however I still gets
some of this:

calcru: runtime went backwards from 37004444177421276
usec to 18502193351497934 usec for pid 81026 (zsh)

FreeBSD flick 7.0-CURRENT FreeBSD 7.0-CURRENT #13: Mon
Jan 29 14:05:04 EST 2007    
root at flick:/usr/src/sys/i386/compile/CURRENT  i386


Are both bugs described correlated? 

TIA,
Etienne


--- Eric Anderson <anderson at freebsd.org> wrote:

> When I boot a -CURRENT box with boot verbose enabled
> inside qemu, I see
> one of these messages about every second:
> 
> 15.f68c5ee76faebe10 too short
> 16.0f822e13092c5580 too long
> 
> I can obviously whack the printf's, but what's the
> 'right way' to fix
> this?  Set HZ to something? Pick a different timer?
> 
> kern.timecounter.tick: 1
> kern.timecounter.choice: TSC(800) i8254(0)
> dummy(-1000000)
> kern.timecounter.hardware: TSC
> kern.timecounter.nsetclock: 2
> kern.timecounter.ngetmicrotime: 80036
> kern.timecounter.ngetnanotime: 0
> kern.timecounter.ngetbintime: 0
> kern.timecounter.ngetmicrouptime: 29057
> kern.timecounter.ngetnanouptime: 109
> kern.timecounter.ngetbinuptime: 488
> kern.timecounter.nmicrotime: 1708
> kern.timecounter.nnanotime: 11
> kern.timecounter.nbintime: 1719
> kern.timecounter.nmicrouptime: 687
> kern.timecounter.nnanouptime: 0
> kern.timecounter.nbinuptime: 3734
> kern.timecounter.stepwarnings: 0
> kern.timecounter.tc.i8254.mask: 4294967295
> kern.timecounter.tc.i8254.counter: 7769
> kern.timecounter.tc.i8254.frequency: 1193182
> kern.timecounter.tc.i8254.quality: 0
> kern.timecounter.tc.TSC.mask: 4294967295
> kern.timecounter.tc.TSC.counter: 809045640
> kern.timecounter.tc.TSC.frequency: 1995115260
> kern.timecounter.tc.TSC.quality: 800
> kern.timecounter.smp_tsc: 0
> 
> FreeBSD  7.0-CURRENT FreeBSD 7.0-CURRENT #3: Fri Feb
> 23 09:28:20 CST
> 2007 i386
> 
> Eric
> 
> 
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> 


----
Etienne Robillard
7680 de jouvence, La Plaine
J7M-2K9, Québec
Telephone: 450-478-5026
Yahoo Messenger ID: granted14
Skype ID: incidah

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