[mythtv-users] What to check/change when changing LAN subnet

[Hika van den Hoven]

Hoi Mike,

Thursday, May 15, 2014, 11:45:43 AM, you wrote:

> On 15/05/14 06:11, Raymond Wagner wrote:
>> On 5/15/2014 12:53 AM, Sam Jacobs wrote:
>>> On Tue, May 13, 2014 at 6:48 PM, Hika van den Hoven <hikavdh at gmail.com> wrote:
>>>> Everybody has old computers. For a firewall/router a pentium2 with
>>>> 256Mb memory and an old 20 Gb HD is already overkill.
>>>
>>> For something that's going to be powered on 24/7, using an old PC
>>> possibly isn't as smart a move as you might think, financially. When I
>>> started using MythTV again, late last year, the machine I used for a
>>> slave backend was the PC I built way back in 2004 (or 2005) when I
>>> *first* started using Myth.
>>>
>>> I'd forgotten how loud the thing was, but what I'd *never* realised
>>> back when my mother was paying the bills was how much damn power the
>>> thing uses! My electricity usage for the weeks I was using it was
>>> about a third higher than usual, and the thing was off for much of the
>>> day! The computer I'm using now is a C2D small form factor machine,
>>> and while it *is* vastly overpowered in the number crunching
>>> department, it uses just a fraction of the electricity.
>>>
>>> There have been massive leaps forward in energy efficiency over the
>>> past 10+ years, and I'd advise anyone considering using an old
>>> computer to think about the *real* cost that doing so might incur.
>>
>> There have been massive leaps forward in energy efficiency, but there have been
>> massive leaps forward in raw energy consumption too. Pentiums all operated under
>> 20W, and most P2s and P3s operated under 30W, maximum. They simply couldn't pull
>> more than that, unless overclocked, and they really didn't have that much excess
>> headroom. A typical C2D was vastly more performant than any of those chips, but
>> it also idled at that much power, and peaks at double that.
>>
>> Computer power consumption spiked in the mid/late 2000s. There's good reason we
>> started getting huge heatsinks for our systems.
>>
> You have to look at the whole picture, though. With that old motherboard often
> comes an old hard disk and an ancient power supply. Most old HDDs tend to run
> warm and I have found that changing a standard power supply for a pico-PSU
> (where possible, of course) can often halve total power consumption. This
> reduces fan requirements which again reduces wattage and so on...


Leave out the HD and boot from cd into memory. The old compaq deskpro
EN I use now you can almost not hear. The only downside is that it
won't boot without keyboard.

Tot mails,
  Hika                            mailto:hikavdh at gmail.com

"Zonder hoop kun je niet leven
Zonder leven is er geen hoop
Het eeuwige dilemma
Zeker als je hoop moet vernietigen om te kunnen overleven!"

De lerende Mens