Two problems with heap profiling
doc at drjava.de
Fri Apr 16 12:38:59 EDT 2004
I'm using GHC 6.2.1 on Windows 2000.
Problem 1: -hr crashes in some circumstances.
Take this program (Test.hs):
module Main where
main = do
where large.csv is an 800K CSV file (with very small files, the bug
doesn't occur). I compile with:
ghc -prof -auto-all Test.hs
and run with:
a.out +RTS -hr
and get a Windows error message indicating that the program had to be
terminated. The "OK" appears, though. When I run the test program
repeatedly, it sometimes works fine (which is not the case for the
real-world program I'm trying to profile).
Other options (-hc, -hy etc) work fine. Unfortunately, retainer
information is the most useful of them all...
Problem 2: hp2ps doesn't work at all. When trying to read this file
JOB "a.out +RTS -hr
DATE "Fri Apr 16 11:15 2004"
it says "a.out.hp, line 7, floating point number must follow
BEGIN_SAMPLE". I assume the apparently mixed English/German number
formatting causes this problem.
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