Re: [Enigma-devel] Maemo Port for Nokia Internet Tablets - memory footprint

[Ronald Lamprecht]

Hi,

Till Harbaum wrote:
> just to get you some numbers: The device has 256MB of main flash memory of 
> which 100 are occupied at delivery.  The remaining mem is (pipeline sais its 
> compressed) used for user installed applications and data. The n800 comes 
> with an empty internal sd card slot which nearly all users fill with a decent 
> card, at least the 128MB card included with the n800. The n810 has no 
> physical internal slot but a hard wired internal 2GB card.
>
> So memory isn't immediately a problem, but moving stuff to the internal memory 
> card may especially help users who install lots of applications.
>
> I don't think we should remove sounds or levels packs (besides the development 
> one of course, which is part of my package). And the thumbnails: They are 
> useful and i wouldn't want to remove them. Caliculating them on the fly is 
> rather slow on the arm cpu. So removing their caches will be quite annoying.
>
> I already have removed the entire doc tree (which reminds me to check if 
> there's stuff that must be installed like e.g. licenses).

Please do not remove anything from the source - just keep it out of the 
installer package. I will explain this strategy in another mail.

The following parts are the only relevant ones to reduce the memory 
footprint:

1. Iinstall gfx32 only - skip gfx16,40,48,64
2. Zip all levelpacks for the installer
3. Use 60x39 thumbnails, scale them to 120x78
4. Strip and compress the executable by upx
5. Title music

I guess this would result in a footprint of 6 MB + 2 MB thumbnails 
instead of 17 + 4.

Remarks:
1. Install empty dirs - see upcoming mail
2. Should work without code change (see Refman chapter 2.3)
3. I added 60x13 thumbnails for gpx. Just the scaling back to 120x78 is
still missing.
4. upx (http://upx.sourceforge.net/) is used for the Windows installer 
packages, too
5. just the upcoming one has a significant footprint

Do not remove anything else - keep the diff as simple as possible.

Greets,

Ronald