[ntp:questions] Sub-millisecond NTP synchronization for local network

Hal Murray hal-usenet at ip-64-139-1-69.sjc.megapath.net
Thu Dec 4 23:36:17 UTC 2008


>Which linux bug causes your frequency to vary?  The only frequency issue 
>I've encountered is a slight variation in the dynamic boot time 
>measurement of the TSC (time stamp counter) frequency.  This problem is 
>not so much a bug in my opinion and is easily fixed by changing the 
>clock source to something other than "tsc".  In our system, we chose to 
>use acpi_pm, which so far has shown no frequency variance.  If this 
>isn't the issue you are having, I would be interested in which bug you 
>have that causes frequency variance.

What's your version of "slight"?  I see enough varation to
make an interesting startup transisent.  I doubt if anybody
other than a geek interested in time would notice, but if you
are interested in time, it's easy to notice.

I'd call it a bug with a known workaround.


-- 
These are my opinions, not necessarily my employer's.  I hate spam.




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