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Re: gprof reporting all 0.0 seconds


Yang Zhang wrote:
michael wrote:
Yang Zhang wrote:
Retrying.

Yang Zhang wrote:
The output of gprof for my C++ program has no entries that contain non-0 time:

% cumulative self self total
time seconds seconds calls Ts/call Ts/call name
0.00 0.00 0.00 20347515 0.00 0.00 __gnu_cxx::__nor..
0.00 0.00 0.00 18191192 0.00 0.00 __gnu_cxx::__nor..
0.00 0.00 0.00 15330884 0.00 0.00 std::strchr(char..
0.00 0.00 0.00 11405520 0.00 0.00 __gnu_cxx::__nor..
0.00 0.00 0.00 10668361 0.00 0.00 __gnu_cxx::__stl..
0.00 0.00 0.00 10173756 0.00 0.00 __gnu_cxx::__nor..
...


What's going wrong? The source (it's a simple 1-file program) and Makefile are available at:

http://assorted.svn.sourceforge.net/viewvc/assorted/hash-join/trunk/src/


In particular, the build command is:


g++ -Wall -lprofiler -lpthread -o hashjoin-pg hashjoin.cc -g -pg

Thanks in advance for any help.

Compile it without any optimization and retry.

Michael


I tried just now. That didn't change anything, sadly.


gprof if I remember is broken for multithread. I have some trouble to compile your test.

Regards Michael


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