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DateThu, 20 Oct 2005 02:43:58 -0400 (EDT)
FromSteven Rostedt <>
SubjectRe: Ktimer / -rt9 (+custom) monotonic_clock going backwards.
On Wed, 19 Oct 2005, Frank Sorenson wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Steven Rostedt wrote:
> > 358.069795728 secs then later 355.981483177.  Should this ever happen?
>
> Pretty sure that "NO" is the correct answer :)

By definition, I figured as much :-)

>
> > FYI, the system is UP. And I compiled without CONFIG_KTIME_SCALAR.
>
> What sort of CPU?  Does it have frequency scaling?
>

Well, it's a normal desktop PC (not a laptop) but here's cpuinfo:

snoopy:~/rt_linux# cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Pentium(R) 4 CPU 2.00GHz
stepping        : 7
cpu MHz         : 1994.256
cache size      : 512 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid
bogomips        : 3990.73


-- Steve

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