  We investigate how the topological charge density in lattice QCD simulations
is affected by violations of chiral symmetry caused by the fermion action. To
this end we compare lattice configurations generated with a number of different
actions including first configurations generated with exact dynamical overlap
quarks. We visualize the topological profiles after mild smearing. In the
topological charge correlator we measure the size of the positive core, which
is known to shrink to zero extension in the continuum limit. To leading order
we find the core size to scale linearly with the lattice spacing with the same
coefficient for all actions, even including quenched simulations. In the
subleading term the different actions vary over a range of about 10 %. Our
findings suggest that non-chiral lattice actions at current lattice spacings do
not differ much for observables related to topology, both among themselves and
compared to overlap fermions.
