52 Pictures with 31 MB on disk
3 Scribus files with 3 MB on disk
That's the current status of my book project.
English version 150 pages
German version 150 pages
Covers in 4 languages 4 pages
But why do they use up 840 MB memory?
As I wrote 1992 my first book, I had to divide it into 30 files,
because I had a computer with only 8 MB memory.
Now I have 512 times more, the usual 4 GB,
but with all the other tasks runing,
I think memory usage should be optimized.
Maybe all graphics uncompressed ready to use in memory?
I think memory usage should be optimized,
that my current task shrinks to 200 MB or 300 MB.
I think my book will have about 400 pages,
at the current memory usage, I fear big problems
to hold English and German version at the same time open.
Just closed the cover of the book.
There are 3 pictures with 3000 x 4243 resolution
and some smaller pictures.
When I calculate 3000 x 4243 * 3 bytes * 3 pictures and the smaller pictures
are about the same 140 MB as the memory usage reduced after closing the file.
So it seems that all pictures are hold in memory complete uncompressed.
I rendered the picture in such a high resolution,
because I think I could need this for a poster version of the book cover.
Proposal:
Hold picture files in memory only ready for 200% zoom or less.
Maybe a new preference setting in what dpi, pictures should be hold in memory.
A dialog like this is already in the PDF export. DPI for PDF export.
Check same picture used several times, hold it only one time in memory.
This is a special case, because I prefer to open English and German version of my book at the same time.
So natural, all pictures are used 2 times, one time in the English version, second time in the German version
Work around if next version does not have this feature:
My only chance to escape the memory usage problem would be to simulate
my proposal by own software.
This means I would use a software to generate 2 versions of all my pictures.
The original version in full resolution and a second version with a smaller resolution.
Depending on what sort of work I do, one of this version copied into the project folder.
For general editing work, not the originals from my camera with 2048 x 1536,
only a reduced version with maybe 1024 x 768 reducing the memory usage by 75%
Only at the final production, I would close all other programs and use the full resolution pictures,
for editing the low resolution