Before
2.039 sage.all (None)
0.410 sage.misc.all (sage.all)
0.260 twisted.persisted.styles (sage.all)
0.221 sage.rings.all (sage.all)
0.188 sage.functions.all (sage.all)
0.171 functional (sage.misc.all)
0.164 piecewise (sage.functions.all)
0.162 sage.calculus.all (piecewise)
0.155 desolvers (sage.calculus.all)
0.154 sage.plot.all (desolvers)
0.151 zope.interface (twisted.persisted.styles)
0.137 pkg_resources (zope.interface)
0.132 interpreter (sage.misc.all)
0.131 IPython.ipapi (interpreter)
After
1.745 sage.all (None)
0.405 sage.misc.all (sage.all)
0.263 twisted.persisted.styles (sage.all)
0.180 sage.rings.all (sage.all)
0.168 functional (sage.misc.all)
0.154 zope.interface (twisted.persisted.styles)
0.141 pkg_resources (zope.interface)
0.134 sage.combinat.all (sage.all)
0.128 interpreter (sage.misc.all)
0.127 IPython.ipapi (interpreter)
That's another quarter-second (12.5%) savings.