hardware agnostic?

[Muzer]

Derek Broughton wrote:
> Muzer wrote:
>
>   
>> Derek Broughton wrote:
>>     
>>> Rashkae wrote:
>>>
>>>   
>>>       
>>>> Derek Broughton wrote:
>>>>
>>>>     
>>>>         
>>>>> I'm not convinced of that - and Scott's info about what he's doing
>>>>> suggests
>>>>> otherwise.  hot-plugging everything as late as possible shortens the
>>>>> boot time.
>>>>>       
>>>>>           
>>>> You would be shocked at how fast some of my old servers for which I
>>>> compiled kernels boot... We're talking about hardware over 10 years old
>>>> and it puts any modern desktop with ubuntu installed to shame.  System
>>>> boots and is at a log in prompt before my desktop has even finished with
>>>> intitramfs.
>>>>     
>>>>         
>>> I wouldn't be _shocked_, but I mean that Scott's plans, heavily dependent
>>> on udev, involve simply _not_ loading any software that is not required
>>> to get
>>> X up and running.  Everything's geared to making X start as fast as
>>> possible.  So while you might be able to achieve the same thing by
>>> compiling a kernel for specific hardware, you can make it _look_ as if
>>> everything is loaded just as fast by waiting for the really intensive
>>> applications to
>>> settle down before you load other things.  I guess I really wasn't "not
>>> convinced" that you could speed up boot by compiling the kernel, but that
>>> I wasn't convinced it was either the only, or necessarily even the best,
>>> way.
>>>   
>>>       
>>>> Alas, I have discovered with age and wisdom, after having gone through
>>>> "look how leet my fast booting linux boxes are" phase, that having
>>>> systems (and backps thereof) which can be ported to any hardware
>>>> 'agnosticly' on a moments notice trumps boot time.
>>>>     
>>>>         
>>> LOL.  Even on my development system, there's much to be said for running
>>> certain services as VMs - for exactly the same reason.
>>>   
>>>       
>> He says "end of bootup" is when both CPU and I/O is idle.
>>     
>
> Who?  Scott?  I've seen him say "when you have a working desktop" - and 
> whether or not that's strictly the "end of boot", it'll probably do for most 
> people.
>
>   
https://lists.ubuntu.com/archives/ubuntu-devel-discuss/2009-June/008505.html

"And just to affirm something we've already stated; this benchmark time
is to a fully logged in desktop (auto-login) with an idle CPU and Disk.
Deferring services is not an option unless done properly (ie. switching
services from startup to on-demand activation)."

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