From: rsc@swtch.com   
      
   > I wonder if there are other good open-source runtime profilers for C++   
   > What other tools are out there?   
      
   If you're doing a lot of system calls and have a lot of   
   processes interacting, use oprofile, as mentioned.   
      
   For standalone programs, try the Google perftools   
   profiler [1].  It does statistical sampling at run-time,   
   and produces very nice summary images showing   
   not only what the hot spots are but the stack traces   
   that led to them.  It can also list your source code   
   with annotations showing which lines or assembly   
   instructions were the hot spots.   
      
   And the same interface works for profiling memory   
   allocation.   
      
   Russ   
      
   [1] http://code.google.com/p/google-perftools/wiki/GooglePerformanceTools   
      
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