Fwd: gprof symspec??

[Ken]

Hello all, I'm not sure if I can ask a gprof question here?

I am profiling a storage engine of mysql.  I compiled and run my test
with gprof and got my gmon.out file.

Then I was trying to get informaiton on some functions and it's
children only, which function is myeng::Table::getNext.

I rtfmed and got this which seems to be what I need:
       "-q[symspec]"
       "--graph[=symspec]"
           The -q option causes "gprof" to print the call graph
analysis.  If symspec is specified,
           print call graph  only
           for matching symbols and their children.

So I tried the following:
$ gprof -b  --graph=getNext  libexec/mysqld var/gmon.out > result
$ gprof -b  --graph=.*getNext  libexec/mysqld var/gmon.out > result
$ gprof -b  --graph=myeng::Table::getNext  libexec/mysqld var/gmon.out > result

None of them worked! The result is about all mysql functions, not just
what I want alone.

I wonder what does this "symspec" mean? How could I use it to get job done?


Best wishes,
Kenneth Tse
Email: xie.kenneth@gmail.com
Twitter: kenneth_tse