Profiling with gprof

 
Hi,

has anyone successfully profiled the VM with gprof lately, preferably on
Linux? If so, how did you do it?

I've tried the hints at http://wiki.squeak.org/squeak/2041 but I guess
they're badly out of date: configure and GCC 4.2 will choke on '-g -pg
-a' but not '-g -pg', and so there's no bb.out.

What's worse is that gprof doesn't produce any statistics apart from
vm/sqUnixMain.c -- here's its summary:

Top 10 Lines:

     Line      Count

      239          1
      934          1
      977          1
     1134          1
     1159          1
     1166          1
     1279          1

What the... ? Hello, I was hoping for some details on the interpret()
function!? -- Well, what more can possibly be in 430 KB of gmon.out? ;-)

So how do I get gprof to take note of interp.c or gnu-interp.c?

Thanks,
André

 
On Sat, Jul 19, 2008 at 07:00:29PM +0200, Andr?? Wendt wrote:
>  
> Hi,
>
> has anyone successfully profiled the VM with gprof lately, preferably on
> Linux? If so, how did you do it?
>
> I've tried the hints at http://wiki.squeak.org/squeak/2041 but I guess
> they're badly out of date: configure and GCC 4.2 will choke on '-g -pg
> -a' but not '-g -pg', and so there's no bb.out.

I just hand-edit ./Makefile and ./vm/Makefile in the build directory, and
add "pg" to the CFLAGS definition of each. The resulting VM produces a
gmon.out file, and running "gprof ./squeak" provides the profiling output.
This is on Linux, and I just went by the information in the gprof(1) man
page.

Dave