<p>I am trying to use Ganymede CDT to index our large codebase. It is painfully slow, can take a whole night to index the C++ files. Same project takes only 5 seconds to index with exuberant ctags 5.7.</p>

<p>Is there some way to find what the root of the problem is and to speed it up?
Maybe turn on logging in CDT, or some obscure option somewhere that I missed?</p>

Do you know if this is a regression from 5.0.0? In that case you should definitely open a bugreport.
Is all of your code in the same project? That may have an impact.