Bug#534978: clock drift in Xen domU with clocksource=xen

[Josip Rodin <joy@debbugs.entuzijast.net>]

On Thu, Mar 04, 2010 at 05:21:31PM +0100, Markus Hochholdinger wrote:
> > In my case this manifested itself when some PHP profiling via microtime()
> > suddenly became useless, and it also caused occasional PostgreSQL errors
> > with tables that had timestamp columns as keys, since it became possible
> > for two independent transactions to come in at the exact same time.
> 
> have you any service like ntp running on these boxes!? What will the app
> do if ntp "corrects" the time!?

NTP always corrects time in a very subtle manner (see its documentation).
I guess it's possible for it to screw with this, yet it never has.

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