[maemo-developers] [maemo-developers] Re: system architecture

[From: Koen Kooi]

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Jakob Praher wrote:
> hi David,
> 
> thanks for your response.
> 
> David.Weinehall at nokia.com wrote:
> 
>>On tor, 2005-06-02 at 14:29 +0200, ext Jakob Praher wrote:
>>
>>
>>>hi all,
>>
>>You should probably read the publicly available information about both
>>maemo and Nokia 770.
>>
> 
> ok. afaik: the public information mostly deals with the maemo
> application sdk. this is why i posted here. i don't want to just raise
> the noise level :-)
> 
> i for myself am a debian user for over 6 years now. - i am working
> exclusively on debian for all my desktop stuff. so i have some
> experiences in that. IMHO a general purpose/vanilla debian distro will
> not be perfect for that job. I would concenctrate on a streamlined
> version, perhaps using an asynchronous init.d (like initng) for
> instance. this implies changing the debs, since the debs use the general
> purpose init.d right now. perhaps one could build an autmated
> translation from the existing scripts files towards a faster process.
> 
> this is just on thing I would look at.
> another would be a faster hotplug infrastructure.
> i think the shell script approach should only be used for third party
> hardware - it is costly to probe all that.
> it would also be interesting to add some udev specs for mobile devices
> (like memory sticks and stuff like that)
> 
> as I said just some random thoughts. anyways I'm looking forward to
> buying one!

My experience with a debian based distro on my ipaqs showed me that I
down reboot very often, and it boots reasonably fast (faster as my
desktop). But still it would be very, very great to have it booting up
almost instantanious. Should those attemps fail, a cool animations does
wonders too :)

<snip>

> 
>>>-> Are you using ramdisk or are you reading/writing directly to the
>>>flash disk?
>>
>>To flash.
> 
> I've heard that flashs only support a limited numer of writes over time.
> Perhaps that isn't the case anymore.
About 10k - 100k depending on the technology used. Wince has been
storing settings in ram for ages and that is VERY annoying when the
battery runs out. The filesystem used (jffs2) has builtin wear leveling
to spread out the writes over the complete partition, and I'm pretty
sure /tmp and /var are on a ramdisk. With all this the internal flash
should last quite long, most likely longer as a standard flashcard in a
mp3 player/photocamera.


regards,

Koen
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