[linux-audio-user] profiling

[Noah Roberts]

Could the RT patch be interfearing with my ability to run gprof? 
AFAICT I did everything right to use it, used the -pg on compile for
instance, but my profiles have no time at all in them:

Flat profile:

Each sample counts as 0.01 seconds.
 no time accumulated

  %   cumulative   self              self     total
 time   seconds   seconds    calls  Ts/call  Ts/call  name
  0.00      0.00     0.00 125000000     0.00     0.00 
std::basic_string<char, std::char_traits<char>, std::allocator<char> >
std::operator+<char, std::char_traits<char>, std::allocator<char>
>(std::basic_string<char, std::char_traits<char>, std::allocator<char>
> const&, std::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&)
  0.00      0.00     0.00      500     0.00     0.00  test_append()
  0.00      0.00     0.00      500     0.00     0.00  test_printf()
  0.00      0.00     0.00      500     0.00     0.00  test_strcat()
  0.00      0.00     0.00      500     0.00     0.00  test_add_str()
  0.00      0.00     0.00      500     0.00     0.00  test_append_str()
  0.00      0.00     0.00        1     0.00     0.00  global
constructors keyed to _Z11test_printfv
  0.00      0.00     0.00        1     0.00     0.00 
__static_initialization_and_destruction_0(int, int)


It makes no sense because I know for a fact that these functions are
taking measurable time to execute.  The only thing I can think of is
that the Full on preempt is breaking my profiler.