On 03/11/2013 01:24, Antonio Marcheselli wrote:
That's about it. One of the assumptions made by NTP is that it is
running at a fixed clock speed (or rather that the system 'clock
source' is). So when that sources frequency is altered for power
saving or performance enhancement (you can configu
I set my BIOS and W7 PM settings off a long time ago: stepping, spread
spectrum, and all power tweaks are disabled, and PM is high perf no sleep,
except monitor and possibly disk (given NTP stats every 16s) after longish
timeouts.
I checked the stable and dev code and it uses PCC/rdtsc if that
I set my BIOS and W7 PM settings off a long time ago: stepping, spread
spectrum, and all power tweaks are disabled, and PM is high perf no sleep,
except monitor and possibly disk (given NTP stats every 16s) after longish
timeouts.
I checked the stable and dev code and it uses PCC/rdtsc if that
Going to wait until some next patch Tuesday has something for me, then the
restart will pick up NTP config changes which should force PCC/rdtsc use, and I
can see if that is enabled and makes a difference. My system should be able to
maintain constant PCC frequency across SMIs/NMIs and possibly
I set my BIOS and W7 PM settings off a long time ago: stepping, spread
spectrum, and all power tweaks are disabled, and PM is high perf no sleep,
except monitor and possibly disk (given NTP stats every 16s) after longish
timeouts.
I checked the stable and dev code and it uses PCC/rdtsc if that
The result of reading the timestamp counter can vary wildly due to EIST
(speed step technology), turbo modes, and owner overclocking, in addition to
differences in CPUs, as noted. There is quite a bit about this on the
Internet. As I recall, most writers recommend not using it, but if one
must, u
Harlan Stenn writes:
> Without knowing more about exactly what is involved, the one thing that
> leaps to mind is that folks should look at "restrict default noquery"
> with appropriate per-host or per-network overrides.
Two thoughts:
1) The big question is whether someone has really discovere
