Aik Hui writes: > > When considering the execution time of a haskell program via +RTS -sstderr > which would be more appropriate: the one denoting the `time elapsed' in > brackets which is longer, or the shorter one? > > INIT time 0.03s ( 0.06s elapsed) > MUT time 0.51s ( 0.88s elapsed) > GC time 0.00s ( 0.00s elapsed) > Total time 0.54s ( 0.94s elapsed) > I'd use the first one as suggested by others, but note if your comparing run times, that total elapsed (wall clock) time is not just a product of your system and its setup. If the compiled code trades time for space, and as a result places heavier demand on the VM management, your users are in for a (longer) wait. i.e., an optimisation cannot be classified as a Universal Win just by looking at the time spent in user space. FYI, the system calls used by the RTS when reporting these numbers are getrusage() or times(). --Sigbjorn
