  The ratio of the diffractive production to the total cross section in DIS is
computed as a function of the produced mass. The analysis is based on the
solution to the non-linear evolution equation for the diffraction dissociation
in DIS.
  The obtained ratios almost do not depend on the central mass energy in
agreement with the HERA experimental data. This independence is argued to be a
consequence of the scaling phenomena displayed by the cross sections.
  As a weakness point a significant discrepancy between the data and the
obtained results is found in the absolute values of the ratios. Several
explanatory reasons are discussed.
