Re: [OT] Major Clock Drift

[Andrew Morton]

Pavel Machek wrote:
> 
> Hi!
> 
> > > >I've discovered that heavy use of vesafb can be a major source of clock
> > > >drift on my system, especially if I don't specify "ypan" or "ywrap". On my
> > >
> > > This is extremely interesting. What version of ntp are you using?
> >
> > Is vesafb one of the drivers which blocks interrupts for (many) tens
> > of milliseconds?
> 
> Vesafb is happy to block interrupts for half a second.

And has this been observed to cause clock drift?

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