The system's product of length with bit rate is limited by the Gordon-Haus effect of pulse arrival time in the all-optical soliton communication systems with energy compensated periodically. We analyze effect of perturbation on the group velocity shift in a lossy fiber, and jitter of the soliton arrival time caused by gain noise in a lumped or distributed energy compensated system. The maximum length-bit-rate product is thus estimated. The result shows that in a practical system the maximum length-bit-rate product in a distributed energy compensated system is generally over twice as much as that in a lumped one.