eallaud at yahoo
Oct 2, 2008, 5:12 PM
Post #2 of 2
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Re : [mythtv-commits] Ticket #5754: Enhancement to make EIT Active Scanning end after a period, then restart later (a duty cycle)
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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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