== Memory and CPU Usage Profiling == Much of the information on
this page was gleaned from
[http://book.realworldhaskell.org/read/profiling-and-
optimization.html Chapter 25] of
[http://book.realworldhaskell.org/read/ Real World Haskell]. It
probably advisable to keep a separate branch specifically set up
for profiling. That branch can just forked off a local `ddc-
head` branch using: {{{ darcs branch ddc-head ddc-profiling }}}
After changing directory into the `ddc-profiling` branch I
create a custom config in that branch by doing: {{{ echo
"BUILDFLAVOUR = devel_prof" > make/config-override.deps }}} The
compiler can now be built using the `make` command. Once we have
the profiling version of the compiler built is a matter of
running it on something appropriate. I usually choose the test
program in `test/90-Programs/Rover` and run it as: {{{ make
cleanWar bin/ddc +RTS -hc -p -K100M -RTS --make
test/90-Programs/Rover/Main.ds }}} This generates a profile
output file named `ddc.hp` which can be converted into a pr