%0 Journal Article %T The Age or Excess of the M|G|inf Queue Busy Cycle Mean Value %A Manuel Alberto M. Ferreira %A Marina Andrade %A Jos¨¦ Ant¨®nio Filipe %J Computer and Information Science %D 2012 %I %R 10.5539/cis.v5n5p93 %X In this work, approximate and exact results concerning a performance measure of the system, the age or the excess of the busy cycle, are presented. It will be seen that it is also a measure of the busy period performance. Service distributions for which it is given for a simple expression and others for which this does not happen are considered. For this last case, bounds are deduced. A special emphasis is given to the exponential distribution and to those related with it, useful in reliability theory. %U http://www.ccsenet.org/journal/index.php/cis/article/view/18933