[mythtv] Re : [mythtv-commits] Ticket #5754: Enhancement to make EIT Active Scanning end after a period, then restart later (a duty cycle)

Emmanuel ALLAUD eallaud at yahoo.fr
Fri Oct 3 00:12:15 UTC 2008


Le 02.10.2008 18:53:22, Michael T. Dean a écrit :
> On 10/02/2008 05:36 PM, MythTV wrote:
> > #5754: Enhancement to make EIT Active Scanning end after a period,
> then restart
> > later (a duty cycle)
> > ----------------------------------
> +-----------------------------------------
> >  Reporter:  simonwalls            |        Owner:  stuarta   
> >      Type:  enhancement           |       Status:  new       
> >  Priority:  minor                 |    Milestone:  0.22      
> > Component:  eit                   |      Version:  0.21-fixes
> >  Severity:  medium                |   Resolution:            
> >   Mlocked:  0                     |  
> > ----------------------------------
> +-----------------------------------------
> >
> > Comment(by simonwalls):
> >   
> ...
> >  I have 2 Nova-T PCI cards, one was always in active scan. Idle
> power
> >  consumed by the server reduced to 84Watts from 95Watts at the wall
> socket,
> >  during the active scan's 'rest' period, using the improved patch I
> attach
> >  today. That's about 8kWh or £1.00 saved per month, at current UK
> >  electricty prices. It corresponds to about 8.5 Watts before PSU
> >  inefficiencies. If both cards had been in active scan, I think the
> saving
> >  would be greater.
> >
> >   
> 
> And, if doing as Janne suggested, you'd save another 84W (making 95W
> total), which is about 61kWh or about £7.6 per month...  (OK, really,
> you'd only save the 95W total when mythbackend was shut down, which
> wouldn't be the entire month, but then again, if shutting down your
> backend when it's not in use, you wouldn't save the 11W this patch 
> may
> save for the entire 720+ hours of the month...)
> 
> >  This improved patch might be more technically acceptable, but I
> note your
> >  views, janne. Given that my backend is never shut down, I think 
> the
> power
> >  saving is worthwhile.
> >   
> 
> Though, with mythshutdown, it could be (and could automatically
> wake)...
> 
> Mike (who's really just trying to tell you to check out mythshutdown
> and
> possibly mythwelcome rather than critiquing your patch--especially 
> if,
> as you claim, power savings are important to you)

Well if you have a BE/FE it is actually a good idea to have active 
scanning be put to rest when it has gathered all it could (that's what 
is hard to measure I guess) at it will keep drawing power when you 
watch TV or recordings.
My 2 cents,
Bye
Manu



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