[time-nuts] PC time error interesting cause

[Tim Tuck]

Hi all,

I have a PC that I use for ham stuff etc. and as part of the normal
build I added NTP keep it on track for the things such as WSPR, JT65 etc.

I also installed the Meinberg Time Monitor to keep an eye on things.
What I found was that over a day of operation, the time would slip
nearly two seconds and sometimes randomly jump forward two seconds or so.

I didn't think there was anything wrong with the PC since it was a fresh
install of Windows 7 with minimal applications installed.

What I eventually found was that the "Power Options" item default of
"balanced" was the cause for this PC's time slips. Changing the setting
to "High Performance" stopped the time walking around.

Interestingly I have another PC set to "Balanced" that does not exhibit
this problem.

Has anyone else seen this effect ?

regards

Tim

de VK2XAX


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

_______________________________________________
time-nuts mailing list -- time-***@lists.febo.com
To unsubscribe, go to https://lists.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

[Poul-Henning Kamp]

--------

Post by Tim Tuck
Has anyone else seen this effect ?

You have unwittingly waded into one of Intels quagmires: What
rate does TSC run, and when.

He aware that your PC will likely use a fair bit more power
on the high performance setting.