Re: [Xen-devel] [PATCH] Fix clock_gettime to increment monotonically onPV-domain/x86

[John Levon <levon@xxxxxxxxxxxxxxxxx>]

On Fri, Jun 15, 2007 at 03:18:16PM +0100, Keir Fraser wrote:

> >> IIUC this would make it less likely to see time going backwards, but when
> >> you do it'll be by a lot more (the size of your precision granularity), and
> >> it'll occur when your time values are unlucky enough to be just on the 
> >> wrong
> >> sides of a boundary between two time intervals which map to different
> >> lower-precision time values.
> > 
> > The idea is that it would never be wrong enough to hit that case (taken
> > to extremes we wouldn't expect to see it go backwards by a minute!)
> 
> Then I don't understand what you're proposing (I thought you were just
> shaving off least-significant bits, but it must be smarter than that).

Sorry, I misunderstood you. Yes, you're right, this doesn't seem
workable. Bah.

john

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