Same file regeneration taking longer duration

[Cyrus Ireri]

Why does it happen that if i generate timetables, it may take like 15 mins. The next time i do it while not having cchanged anything, it takes longer. At times, i might have deactivated some constraints but it takes longer.If i happen to cancel a file that was generating and remove some constraints, the file that had run fast will tend to slow down. What really happens?

[Cyrus Ireri]

This had taken 24 mins to finish. Its now almost a hour and i haven't changed anything

[Liviu Lalescu]

Generation is semi-random. It is normal.

[Cyrus Ireri]

Okay