Both wikipedia and hackage rdtsc packages have lot of warnings regarding things I'm not able to control. It seems it doesn't work with many platforms, be it older or multi-core, hibernating computers.
yes, i mean this lib but forget its name :) thank you
Don't know if it might help but: http://en.wikipedia.org/wiki/RDTSC cabal install rdtsc http://hackage.haskell.org/packages/archive/rdtsc/1.1.1/doc/html/System-CPUT...
computer has been turned on would do all I need. Or, maybe, how much has elapsed since the program started.
i think you should look into system counters (if you on windows). for example, task managet in vista shows time since reboot, i think that in registry it should be available in previous windowses too. at the cpu level, there is cpu ticks counter, it should be readable via special libraries