[redirecting to ghc-users]
On 1/13/07, Ron
Dear,
I made a profile[1] of a test program: Where can I find documentation for the meaning of everything mentioned below? Or alternatively, can anyone explain them?
Where can I see the effect of using the -xt option in this profile?
Ron
[1] /Main +RTS -p -s -xt -hc 1,372,408,024 bytes allocated in the heap 121,255,600 bytes copied during GC (scavenged) 6,584,692 bytes copied during GC (not scavenged) 2,768,896 bytes maximum residency (68 sample(s))
2649 collections in generation 0 ( 1.11s) 68 collections in generation 1 ( 0.49s)
6 Mb total memory in use
INIT time 0.00s ( 0.00s elapsed) MUT time 5.97s ( 6.63s elapsed) GC time 1.60s ( 1.88s elapsed) RP time 0.00s ( 0.00s elapsed) PROF time 0.19s ( 0.20s elapsed) EXIT time 0.00s ( 0.00s elapsed) Total time 7.76s ( 8.71s elapsed)
%GC time 20.6% (21.5% elapsed)
Alloc rate 229,946,873 bytes per MUT second
Productivity 76.9% of total user, 68.5% of total elapsed
I don't think that the format of this file is documented anywhere (though it should be), but this information is really meant for GHC implementors. Have you looked at the chapter on profiling in the GHC manual yet? http://www.haskell.org/ghc/docs/latest/html/users_guide/profiling.html There's also a very sketchy intro to profiling in the GHC Commentary: http://hackage.haskell.org/trac/ghc/wiki/Commentary/Profiling and you're welcome to improve it. If the above documentation doesn't answer your questions, feel free to reply to this mailing list with more specific questions; it might help to explain exactly what you're trying to find out about your program's behavior. Cheers, Kirsten -- Kirsten Chevalier* chevalier@alum.wellesley.edu *Often in error, never in doubt "What is research but a blind date with knowledge?" -- Will Henry