title: How to find performance bottlenecks in C++ code
body: <p>I have a server application written in C++ and deployed in Cent OS. I haven't wrote any part of its code but i need to optimize its performance. Its current performance is acceptable for few amount of users but when the number of users increase the server's performance decrease dramatically.</p>
  
  <p>Are there any tools, techniques or best practices to find out the bottlenecks?</p>