Uwe Klein <[EMAIL PROTECTED]> writes: >David Woolley wrote: >> Uwe Klein wrote: >> >>> Danny Mayer wrote: >>> >>>> It's not doing nothing. If the CPU is on standby nothing, including >>>> ntpd, should be running. >>> >>> >>> ntp would then need to accomodate thinks like a "sleep mode"? >>> and a "trigger" of type "Query the associations now" >>> ( on linux forex be d-bus aware? ) >> >> >> The impression I get is that ntpd should be treated as infrastructure, >> and have power management states, but Red Hat are treating it as an >> errant application that needs to be modified to avoid upsetting the >> power management apple cart.
>Hello David, >I am not surprised. >Linux presents afaik the biggest userbase for ntp (and is simultanously >the most derided group of questioneers in this NG, though i think compared >to the installed instances linux is imho underrepresented). >If a large group is beat over the head in a somewhat regular fashion >( which may have been just a cats and dogs thing ) it is rather >unsurprising to find those people working around this obstacle. I certainly have no idea what you are talking about. What derision? What "beat over the head"? What obstacle? > E.g. after resume from RAM, it needs to >> progress the clock discipline algorithm forwards (including extra >> corrections for temperature excursions) before anything is allowed to >> read the value of the clock, and after resume from disk, it should >> probably do a restart. >Well it should start with ntp getting signaled to prepare for various >modes of sleep or cpu frequency slowdown. >Save as much state as is possible, then ack for sleep. >There is actually another situation where currently ntp is just >killed of and started again: network interface changes. >This could be handled in a less disruptive way as well. >> >> The latter greatly increases the importance of fast convergence, and >> without specific compensation for temperature variation, even resume >> from RAM needs the ability to respond fast to frequency hits, possibly >> conditioned on just having done a resume. >Whichever way one does this ntp needs to be able to respond to finer >grained external triggers. It can not any longer be "King of the Castle". No idea what this means either. _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
