The number of surplus credits that have been spent by an unlimited instance when its
CPUCreditBalance value is zero.
The CPUSurplusCreditBalance value is paid down by earned CPU credits. If the number of surplus
credits exceeds the maximum number of credits that the instance can earn in a 24-hour period, the
spent surplus credits above the maximum incur an additional charge.
The number of surplus credits that have been spent by an unlimited instance when its CPUCreditBalance value is zero.
The CPUSurplusCreditBalance value is paid down by earned CPU credits. If the number of surplus credits exceeds the maximum number of credits that the instance can earn in a 24-hour period, the spent surplus credits above the maximum incur an additional charge.