jcomeau@intrepid ~/src $ time mandel.sh 640 480 -1.2839731 0.4274459 2097152 maxelbrot speedy creating mandelgen_640_480_-1.2839731_0.4274459_2097152_maxelbrot_speedy.jpg Psyco loaded for faster execution Showing one dot per line processed ................................................................................ ................................................................................ ................................................................................ ................................................................................ ................................................................................ ................................................................................ real 1m17.471s user 0m52.104s sys 0m0.040s jcomeau@intrepid ~/src $ time mandel.sh 640 480 -1.2839731 0.4274459 2097152 maxelbrot creating mandelgen_640_480_-1.2839731_0.4274459_2097152_maxelbrot.jpg Showing one dot per line processed ................................................................................ ................................................................................ ................................................................................ ................................................................................ ................................................................................ ................................................................................ real 4m14.776s user 2m8.834s sys 0m0.080s