[Lazarus] EPIKTIMER etc

Tony Whyman tony.whyman at mccallumwhyman.com
Mon Jun 8 13:39:46 CEST 2015

So, do we conclude that Microsoft's "Embrace, extend, and extinguish" 
strategy now applies to Time itself?

On 08/06/15 12:34, Michael Schnell wrote:
> Just to let you know....
> In search of a problem completely unrelated to fpc and Lazarus I found 
> out that the reason of the severe timing inaccuracy making this 
> application being absolutely unusable for the desired task, has been 
> Microsoft "Active Directory".
> After I installed Automachron, syncing the PC with an "official" NTP 
> Server, the problem vanished. (But the IT department told me that this 
> PC will see severe issues, e.g. Active Directory preventing user login. )
> I seem to remember, that many FPC built Projects either directly use 
> the PC clock as a source for timing or use EPIKTIMER that in some 
> incarnations use a CPU based hardware timer and in other incarnation, 
> use the PC clock as well.
> Now I found that with "Active Directory" in my installation  the PC 
> clock erratically fluctuates at rates of at least some 40 seconds per 
> hour and at least for a total amount of 40 Seconds.
> So it is a lot worse than the uninfluenced clock of even a really 
> cheap PC and unusable for many timing tasks.
> -Michael
> --
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