[ntp:questions] ntpd wedged again
Ron Frazier (NTP)
timekeepingntplist at c3energy.com
Thu Feb 9 07:50:10 UTC 2012
On 2/8/2012 4:41 PM, E-Mail Sent to this address will be added to the
>> BlackList wrote:
>>> Any CPU power management enabled?
>> Good question, but, no. System is set never to sleep,
>> never to standby, never to shut down hard drive,
>> and hibernate only if on battery with critical low battery.
> FYI, CPU power management differs from those system power
> management you mentioned.
> e.g. Both Intel& AMD have differing cpu core power management
> in their current multi-core products, that vary core frequency,
> & / or shutdown some cores, .... (among other things they change
> in the cores like supply voltage);
> Some of them change without / beyond user control.
> See also: ACPI C& P states
> Consider this:
> <BlockQuote> <http://www.intel.com/support/processors/tools/piu/sb/CS-031497.htm>
> Power Management modes may interfere with speed detection
> tests performed by the Processor Identification Utility.
> Power management modes can result in a marginally higher
> or lower reported frequency than the expected frequency.
> AMD CoolCore™ Technology
> Works automatically without the need for drivers or BIOS enablement.
> Power can be switched on or off within a single clock cycle,
> saving energy with no impact to performance.
> I can't find one specific article at the moment, however IIRC,
> it said there were some AMD flavors that will change
> the core frequencies for thermal management,
> independent of user controls.
> FYI: For Win 7& Vista, to lock the process to a specific core,
> See: start /affinity
I see what you mean. From that point of view, I think the only settings
I have access to in the power configuration are:
Minimum CPU Frequency - 20%
Maximum CPU Frequency - 100%
System Cooling Policy - Active (I think that varies the fan before
throttling the CPU for heat reasons.)
There is also another thing which may be related:
USB Selective Suspend - Enabled
Since the Meinberg installer set up NTPD to run as a service, I don't
know how to set a processor affinity. I'm not sure that would affect
the stability of NTPD anyway.
(PS - If you email me and don't get a quick response, don't be concerned.
I get about 300 emails per day from alternate energy mailing lists and
such. I don't always see new messages very quickly. If you need a
reply and have not heard from me in 1 - 2 weeks, send your message again.)
timekeepingdude AT c3energy.com
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