--- a/web/views/debug.py	Tue Feb 10 14:37:51 2015 +0100
+++ b/web/views/debug.py	Tue Feb 10 14:38:25 2015 +0100
@@ -186,31 +186,13 @@
     cache_max_age = 0
 
     def call(self, **kwargs):
-        from cubicweb._gcdebug import gc_info
-        from rql.stmts import Union
-        from cubicweb.appobject import AppObject
-        from cubicweb.rset import ResultSet
-        from cubicweb.dbapi import Connection, Cursor
-        from cubicweb.web.request import CubicWebRequestBase
-        lookupclasses = (AppObject,
-                         Union, ResultSet,
-                         Connection, Cursor,
-                         CubicWebRequestBase)
-        try:
-            from cubicweb.server.session import Session, InternalSession
-            lookupclasses += (InternalSession, Session)
-        except ImportError:
-            pass # no server part installed
+        stats = self._cw.call_service('repo_gc_stats')
         self.w(u'<h2>%s</h2>' % _('Garbage collection information'))
-        counters, ocounters, garbage = gc_info(lookupclasses,
-                                               viewreferrersclasses=())
         self.w(u'<h3>%s</h3>' % self._cw._('Looked up classes'))
-        values = sorted(counters.iteritems(), key=lambda x: x[1], reverse=True)
-        self.wview('pyvaltable', pyvalue=values)
+        self.wview('pyvaltable', pyvalue=stats['lookupclasses'])
         self.w(u'<h3>%s</h3>' % self._cw._('Most referenced classes'))
-        values = sorted(ocounters.iteritems(), key=lambda x: x[1], reverse=True)
-        self.wview('pyvaltable', pyvalue=values[:self._cw.form.get('nb', 20)])
-        if garbage:
+        self.wview('pyvaltable', pyvalue=stats['referenced'])
+        if stats['unreachable']:
             self.w(u'<h3>%s</h3>' % self._cw._('Unreachable objects'))
-            values = sorted(xml_escape(repr(o)) for o in garbage)
+            values = [xml_escape(val) for val in stats['unreachable']]
             self.wview('pyvallist', pyvalue=values)