  The centrality dependence of the charged-particle multiplicity densities
($dN_{ch}/d\eta$) and transverse energy densities ($dE_{T}/d\eta$) are
investigated using the two-component Glauber approach for broad range of
energies in heavy ion collisions at RHIC and LHC. A comprehensive study shows
that the data is well described within the framework of two component model
which includes the contribution of "soft processes" and "hard processes" for
different centrality classes and energies. The data at two different energies
are compared by means of the ratio of $dN_{ch}/d\eta$ (and $dE_{T}/d\eta$) to
see the interplay of energy and $x$-scaling.
