1. A method, in a data processing system, for determining a modeled age of a set of interconnect groups in a set of cores in a set of multi-core processors, the method comprising: for each interconnect group in the set of interconnect groups in the set of cores on the set of multi-core processors, determining a current modeled age of the interconnect group, wherein determining the current modeled age of the interconnect group comprises: for each interconnect group in the set of interconnect groups, each core in the set of cores, and each processor in the set of multi-core processors, computing an aging percentage value utilizing a temperature associated with the interconnect group and a current associated with the interconnect group at regular intervals, wherein the aging percentage value is computed for each interconnect group by numerically solving Black's equation, wherein current in Black's equation is substituted with an estimated current associated with the interconnect group, wherein temperature in Black's equation is substituted with a measured or an estimated temperature for the interconnect group, and wherein the estimated current associated with the interconnect is computed by numerically multiplying a current contribution matrix by a vector of numerical values of currents of core components; and increasing the current value for the modeled age of interconnect group by the aging percentage value; determining whether at least one current modeled age of the interconnect group for the set of interconnect groups is greater than an end-of-life value; and responsive to at least one current modeled age of the interconnect group being greater than the end-of-life value, sending an indication to take corrective action with the at least one associated interconnect group such that at least one of the multi-core processor associated with the at least one interconnect group is replaced or workload associated with the core or the multi-core processor associated with the at least one interconnect group is managed.