[Zope] CallProfiler and Zope 2.7

Does anybody know if CallProfiler 1.4 (http://zope.org/Members/richard/CallProfiler) is compatible with Zope 2.7? I see various references to a call profiler included in 2.7 ( though I can't find any evidence of it) -- is there something already there? If not can I use CallProfiler 1.4? ( an attempt to include in the Products directory of my instance seems to make Zope fail to start up so I am guessing that it doesn't work or I misunderstand how to use it)