[Haskell-cafe] GHC profiling overhead
Kolář Dušan
kolar at fit.vutbr.cz
Tue Feb 25 17:18:50 UTC 2020
Dear Café,
I'm quite curious about overhead of the profiler...
I've compiled my program with --make -threaded -rtsopts -O2 -prof
options.
It was started with +RTS -N5 -p
Usually, the program evaluates like 6-7 hours of real time. What is the
overhead of the profiling? After 8 hours of working, the program has not
finished yet. I've looked over the Internet and it seems like the
overhead may be 25 times slowdown and even worse. Is it true? If yes,
it's not worth waiting then :-)
Best regards,
Dusan
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