Right, curious about wys\' result I did a little test of my own (not on a C700 or even a C860, but my 5500 has 64Mb of RAM like Wys\' machine).
I used 3 pdf files which I had to hand (I\'ve also provided links, sizes, etc.), downloaded and installed the latest version of qpdf2 and ran \'top\' via a ssh link to see what the memory was doing. This is what I found (BTW I don\'t have a swap file or anything like that):
Nb. I was writing down the memory figures from the screen so they may have changed while I was mid-scribble and therefore won\'t add up to exactly 64Mb (though I was reasonably careful to let them settle before I began).
1) QPDF2 open and on file selection screen, no file loaded.
Used 60996
Free 1392
Shared 0
Buffer 2004
Cache 36996
2)
http://www.caib.us/news/timeline/STS-107-G...Track-Rev15.pdf (3,502Kb, 20pages, c.175Kb/page) open in QPDF2
Used 59184
Free 3204
Shared 0
Buffer 2004
Cache 35140
3)
http://www.caib.us/news/report/pdf/vol1/fu...ort_volume1.pdf (10,454Kb, 248pages, c.42Kb/page) open in QPDF2
Used 56628
Free 5760
Shared 0
Buffer 1960
Cache 32268
4)
http://www.caib.us/news/working_scenario/p...ingscenario.pdf (12,449Kb, 189pages, c.66Kb/page) open in QPDF2
Used 56648
Free 5740
Shared 0
Buffer 1960
Cache 32324
5) QPF2 closed
Used 53556
Free 8832
Shared 0
Buffer 1960
Cache 32324
I followed the steps as I\'ve outlined them above and after I\'d opened each file I scrolled through for a dozen pages or so (or until I came to some reasonably complex graphics).
Nb. The Cache memory is free memory which is being used for something useful. If it\'s needed it will be freed for use by other processes. Therefore the free memory is actually Free + Cache.
Anyway, my conclusions are:
QPDF2 requires c.3Mb to run (difference between Used-Cache for case 1 and case 4)
Files must be loaded page by page, and each page needs up to about 350Kb (probably depending on what\'s on it, though this is odd as the file which I loaded in #2 used the least extra memory but had the most bytes/page).
In summary, I doubt you\'d need a swap file on a 64Mb system (I certainly don\'t) unless you\'re also trying to calculate Pi to 3 million decimal places (or even just running lots of other stuff ;-)), and I reckon you\'d probably be alright on a 32Mb system too (though it would be nice for someone to confirm this).
@Guest thinking of making the purchase: If you want to provide a link to a 30Mb file I\'ll be glad to try it and see how much memory it needs.
@Wys: If you want me to test your file I can try that too.
Regards,
Si
