low-level profiling
Simon Marlow
marlowsd at gmail.com
Mon Feb 18 15:12:41 CET 2013
On 15/02/13 20:31, Johan Tibell wrote:
> On Fri, Feb 15, 2013 at 12:02 PM, Nicolas Frisby
> <nicolas.frisby at gmail.com <mailto:nicolas.frisby at gmail.com>> wrote:
>
> Thanks for rallying everyone! I made a bit of a breakthrough while
> trying to pinpoint where the linker is invoked.
> Here's the situation:
> * If I use nofib's "make" command to build the text, the
> executable does not have the function symbols in its .text section.
> The .o files do have them.
> * If I use ghc --make instead, the symbols survive in the executable.
> I'm not up to sleuthing out the details at the moment. Should I open
> a Trac ticket?
>
>
> Sounds like make for nofib strips the executables after they are
> created. That probably makes sense if nofib also measures executable
> sizes, but it might screw you up here. Using ghc --make (command copied
> form whatever nofib uses) is probably the right thing to do while you're
> debugging any performance issues.
Ah yes, I usually have
STRIP=:
in my mk/build.mk
Probably a good idea to get rid of the stripping completely, it doesn't
affect the size measurements anyway which use the 'size' command.
Cheers,
Simon
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