[ntp:questions] Frequency Error on Sun4v
fran.horan at jhuapl.edu
Thu Jun 26 12:12:13 UTC 2008
> Do not even think about using NTP on a T1000, T2000, or T5120 until
> you have the latest firmware patch installed (nah-nah, wasn't hardware
> OR software. Or maybe both?). There is a bug in all three that
> causes the firmware to report an incorrect clock frequency to the
> kernel on boot up. Interestingly, the bug in the T1000 and T2000 is
> different from the bug in the T5120. See my blog post at
> http://blogs.sun.com/blu/entry/spread_spectrum_emi_and_the for an
> explanation of the T5120 issue.
> Brian Utterback
Can you provide a firmware rev number where the fix was first introduced ?
Is there a firmware tunable to disable frequency modulation ?
More information about the questions