How to improve processing time ??

[Antoine4851]

Hi,

I'm extracting pages from a big TIF and creating new files with. But it's taking a long time !!!

For example, for creating a files with the first 50 pages from a TIF of 1500 pages, it's taking around 15 minutes with the command below:
convert in.tif[0-49] out.tif


Thanks

Antoine

[snibgo]

How many pixels in each page? What is the computer bottleneck: CPU, memory or disk? Maybe you are running out of memory.

[fmw42]

Do you have multiple cores and is OpenMP enabled? Be sure the have lots of tmp space, also.

[magick]

Its likely ImageMagick is running out of memory so it caching the TIFF images to disk-- which is a performance killer. It works but is slow. Your choices are to accept the slow turn-around, get substantially more memory, or use some other utility.