gs takes 25 minutes to do ~/ghostpdl/gs/debugbin/gs -sDEVICE=bmp16m -o /dev/null Triptico-guifi1A.pdf and 45 minutes to do ~/ghostpdl/gs/debugbin/gs -dNOPAUSE -dBATCH Triptico-guifi1A.pdf With -dNOINTERPOLATE or -dNOTRANSPARENCY rendering time is within 1..2 sec for any combination of devices and options. The sample file has been attached by the user to the bug 693033, comment 2, that is unrelated to the rendering problem.
Created attachment 8693 [details] Triptico-guifi1A.pdf: slow rendering I'm attaching the same file here. Let me know if I can help in any other way
This file worked very fast (seconds) for me with gs 9.19, so maybe this problem was solved long ago.
Confirmed it is fast now.