Messages in this thread | | | Date | Mon, 24 May 2010 13:20:45 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] x86: Export tsc related information in sysfs |
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On 05/24/2010 11:51 AM, john stultz wrote: > > Hmmm. That could be an option for newer cpus that I wouldn't oppose. > > While Peter is correct that the stamped value is probably not very > accurate, atleast it would be constant from boot to boot, and NTP's > calculated drift value would be correct. > > We'd need a check to make sure its not way off, since NTP will give up > if its outside 500ppm. So as long as its close to the calibrated value, > we probably could use it. >
Is that still the case? I thought newer versions of NTP could deal with large values. Inaccuracies of way more than 500 ppm are everyday.
-hpa
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