by a.. » Sun, 19 Jun 1994 07:59:26
I would appreciate explicit instructions
on how to get profiling to work under gcc/g++
on Linux, including version numbers for gcc,
libraries and kernel. I have read the faq and
tried numerous times to profile, but have never
achieved anything other than a program that
instantly seg-faults.
Thanks,
Frederick Umminger
by Topi Paavo » Mon, 20 Jun 1994 01:38:33
1. Compile your program using the "-pg" switch. Use this switch for
every file you want profiled, and link everything with -pg.
2. Run the program. This creates the "gmon.out" file.
3. Do a "gprof <program>" and you get the flat profile and call graph
listings.
There are some options for gprof but I don't know what they do. hmm...
I wonder where the man pages could be found? <off to search>
- tjp
by Ta Ch » Thu, 23 Jun 1994 05:49:16
: 1. Compile your program using the "-pg" switch. Use this switch for
: every file you want profiled, and link everything with -pg.
: 2. Run the program. This creates the "gmon.out" file.
: 3. Do a "gprof <program>" and you get the flat profile and call graph
: listings.
: There are some options for gprof but I don't know what they do. hmm...
: I wonder where the man pages could be found? <off to search>
: - tjp
I did exactly as what you said above except that I am not sure whether
my kernel was compiled with CONFIG_PROFILE #defined. All the running
time is attributed to _entry
% time seconds cumsec calls function
100.00 4.24 4.24 _entry
All others are just 0's.
Is this because my kernel was not compiled with CONFIG_PROFILE
#defined ?
-tchen
by Topi Paavo » Thu, 23 Jun 1994 20:06:08
> All others are just 0's.
> Is this because my kernel was not compiled with CONFIG_PROFILE
> #defined ?
- tjp
In my quest to port Duke Nukem 3D to FreeBSD, I'm trying to profile
the program to see what's making it so low, as suggested on the
3drealms forum. I add -pg to CFLAGS and LDFLAGS, and when it gets to
the linking stage, it dies like this:
gcc -o build -g -pg -L/usr/local/lib -Wl,-rpath,/usr/local/lib \
-lSDL-1.1 -pthread build.o bstub.o engine.o cache1d.o \
sdl_driver.o unix_compat.o a.o pragmas.o
/usr/local/lib/libaa.so.1: undefined reference to `longjmp'
/usr/local/lib/libaa.so.1: undefined reference to `setjmp'
/usr/X11R6/lib/libX11.so.6: undefined reference to `getgid'
/usr/local/lib/libaa.so.1: undefined reference to `random'
/usr/local/lib/libesd.so.2: undefined reference to `connect'
[snip about 50 more similar lines]
If I take the -pg out, it compiles fine again. After googling, I
thought I might be missing the profiling libraries, so I set NOPROFILE
to false in /etc/make.conf and did a full installworld and kernel
(4.8-R). But I still get the same error above. I looked in /usr/lib,
and I do have a bunch of lib*_p.a files, like libc_p.a. They're all
dated from the day I originally installed this system, so it doesn't
look like my installworld installed them, but they do exist.
Anyone know what I'm missing here?
Thanks,
--
Aaron
3. Profiling with gcc on solaris x86
4. Kernel 1.1.42 fixes serial bug!
6. root path
7. Profiling with GCC-2, and Solaris 2.3 (No Proworks)
8. Compiling for Unix Versions
9. Linker/Profile error GCC 2.6.3
11. GCC-2.95 configuration & profile.
12. gcc 2.95.3 + profiling + s8 = link errors
13. gcc-2.5.8, solaris 2.3, threads, and profiling