Messages in this thread |  | | | Date | Mon, 7 Apr 2008 08:27:55 +0200 (CEST) | | From | Thomas Gleixner <> | | Subject | Re: [PATCH] Close small window for vsyscall time inconsistencies | |
On Mon, 7 Apr 2008, Roman Zippel wrote:
> Hi,
>
> On Friday 4. April 2008, john stultz wrote:
>
> > So Thomas and Ingo pointed out to me that they were occasionally seeing
> > small 1ns inconsistencies from clock_gettime() (and more rarely, 1us
> > inconsistencies from gettimeofday() when the 1ns inconsistency occurred
> > on a us boundary)
>
> What does inconsistency mean?
Time is going backwards by 1us/1nsec.
> So instead of shooting in the dark, I'd suggest to collect some
> numbers first,
That's what we did and John's analysis of the problem is pretty
correct.
Thanks,
tglx
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