Previously page splitting occurred in a single process because it was
not believed to affect performance much. It turned out to be an expensive
operation.
It now scales better with large page sizes although this has a negative
effect on small files.
Overall time changes as follows:
7 page file, 9.02s -> 9.56s
731 page file, 213s -> 97s
WITH --tesseract-timeout 0 --output-type pdf --skip-text
i.e. you don't get a 2.2x speed gain when OCR is available.
Squashed a commit to ix test suite failure on --rotate-pages
Squashed a commit to remove debug code
James R. Barlow
dea8fcfb5b