Table 1: Comparison of efficiency indices for different methods.

Iterative methods(1.2)(1.5)(1.6)(2.2)

Number of steps1223
Rate of convergence2446
Number of functional evaluations
The classical efficiency index
Number of LU factorizations1221
Cost of LU factorizations
(based on flops)
Cost of linear systems (based on flops)
Flops-like efficiency index