So I have tried profiling the first time... using ghc-4.08.1 with options -prof -auto-all runtime option -px ghcprof and daVinci work like a charm what I see is main uses 99.90 % time and space sat for practical purposes is the only function called from main and uses ca. 12 % time and space what am I doing wrong... Prelude not compiled for profiling? Thanks in advance Dirk --- +---------------------------------------------------------------------+ | Dirk Evers Office: M3-120 | | Technische Fakultaet / AG PI Tel: +49 521 106-2905 | | Universitaet Bielefeld FAX: +49 521 106-6411 | | D-33594 Bielefeld e-mail: dirk@TechFak.Uni-Bielefeld.DE | | Germany URL: http://www.TechFak.Uni-Bielefeld.DE/~dirk/ | |---------------------------------------------------------------------| | Die Succulenten / a cappella singing / http://www.succulenten.de | +---------------------------------------------------------------------+