System requirements of live ubuntu 6.06 cd

[Jean-Philippe]

Dan Kegel a écrit :
> On 8/10/06, Dan Kegel <dank at kegel.com> wrote:
>>>> http://releases.ubuntu.com/6.06/ claims that the live installer only
>>>> requires 192MB of system RAM.   That's about what my 256MB system has
>>>> (after subtracting shared video RAM), and it was bad enough that it
>>>> was unusable.
>>>> Thus it's either a bug in the live installer, or a bug in the release notes.
>>> That figure was the result of real-world testing; we used the installer in
>>> an environment with that amount of RAM and thereby established the
>>> requirement.  Check the amount of available memory with
>>> System->Administration->System Monitor.
> 
> That says there's 234MB of system memory.
> 'free' says there are 240MB of system memory.
> So I guess the live cd uses a 16MB display mode, which seems fine.
> The hardware in question is a Compaq Presario 700, an Athlon 4 system that
> defaults to 500MHz and can be set to run at 1GHz (but not at the keyboard).
> 
> Timings at 500MHz with the live cd:
> boot time: 217 seconds.
> time for install to get to the Welcome screen: 36 seconds
> "Where are you?" screen: 7 seconds
> "Who are you?" screen: 4 sec
> "Prepare disk space" screen: 23 sec
> manual "prepare partitions" screen: 53 seconds
> Total: 340 sec (5 1/2 minutes)
> I didn't go further this time, as I didn't want to modify the hard drive,
> but my recollection is that it got very slow thereafter.
> 
> For comparison, a Compaq Presario R3000 with 503MB (according to system
> monitor), with an Athlon 64 at 800 MHz, had the following timings with the 32
> bit live cd:
> boot time: 227 seconds
> time to welcome screen: 11 sec
> "where are you": 2 sec
> "prepare disk space" 14 sec
> manual "prepare partitions" 7 sec
> Total: 261 sec.
> 
> The live cd seemed a lot more responsive on the bigger system;
> on the small system, it would swap whenever you did anything.
> 
> Timings with the alternate cd:
> boot time: 15 seconds.
> time to get to "please enter the hostname": 42 seconds
> thence to "who are you?" screen: 9 sec
> thence to "partition disks": 13 sec
> thence to manual partition screen: 1 sec
> Total: 61 sec (1 minute)
> 'free' says 240MB ram in this mode, too.
> 
> I unfortunately can't reinstall the small system or add RAM to it,
> or remove RAM from the large system, so this is all a bit inconclusive,
> but the poor interactivity and swapping on the 240MB system
> are a clue that the rest of the install might suck there, too.
> - Dan
> 
Some french users reports that ubiquity works fine on a computer with
256Mo of RAM but they had a better processor, around 800Mhz.
Some others complain that this was not working with their computers but
they had a slower processor, around 450Mhz (additionnally I don't think
ubuntu itself would be usable on this kind of computers, and users
should choose xubuntu so that should not be a problem)

So finally I think there is some other things to look for the
requirements, ie processor.

My 2 cents