At Google we use tcmalloc which is now open sourced. A paper about it: http://goog-perftools.sourceforge.net/doc/tcmalloc.html http://goog-perftools.sourcefor

At Google we use tcmalloc which is now open sourced. A paper about it: http://goog-perftools.sourceforge.net/doc/tcmalloc.html http://goog-perftools.sourceforge.net/doc/tcmalloc.html The code: http://code.google.com/p/google-perftools/ http://code.google.com/p/google-perftools/