DiazCarrete, 
"the very definition of the GHC profiler makes it of limited use when estimating time on two classes of computations: firstly, those that need to do blocking IO; and secondly, some computations that invoke functions written in other programming languages."
https://www.tweag.io/blog/2022-07-28-timestats/
Sometimes you have to turn to the eventlog
https://well-typed.com/blog/2019/09/eventful-ghc/
https://hackage.haskell.org/package/ghc-events
https://downloads.haskell.org/ghc/latest/docs/users_guide/eventlog-formats.html
