[LinuxPPS] Stats & architectures

[Rodolfo Giometti]

On Tue, Mar 11, 2008 at 10:23:59AM -0000, Robert Jenkins wrote:
> Hi Rodolfo & all,
> 
> I'm still having tremendous problems trying to get PPS to work properly on
> my new server..
> 
> Two questions:
> In the present PPS implementation (V5.x), what should ntptime show when PPS
> is in lock? On my system it has never shown anything other than 'status 0x1
> (PLL)' where older PPS versions (on my previous system) used to somewhat
> different info?

Just the same as before I suppose...

> Is anyone else using PPS on an x86_64 dual-core system and getting good
> results?
> 
> ------
> With an earlier kernel (2.6.23) I got good stability (both error & jitter
> settled at 0.001) but it never showed any status other than PLL.
> 
> I rebuilt everything using the 2.6.24 kernel and now it jumps about at
> random - it settles down, sometines to .001 for a while then jumps, with
> anything from a few uS to 3mS increase in error.
> 
> (This is both with & without the kernel patch. 
> That patch does have a significant effect, the frequency is around -95ppm
> without the patch and -66ppm with it, but either way is still jumps and
> jitters.)

Are you using the same LinuxPPS version on both systems?

Ciao,

Rodolfo

-- 

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