Runtime Overhead: R11-R13

One of the advantages of adaptation is the potentially reduced size of code which must be shipped over the network. This gain of bandwidth and loading time must not be wasted by an expensive adaptation mechanism.

R11

Therefore a fundamental requirement is to demand that the size of the binary resources of the core and of an adaptable part (worst case: the biggest) including the adaptation mechanism is smaller than the binaries of a comparable monolithic application. Obviously, this needs to be considered in relation to the overall size and to the execution time of the code. This requirement supports the argument of saved bandwidth when using adaptation.

R12

The second requirement enforcing minimal overhead is fast loading of adaptable parts and re-configuration of the mobile code.

R13

Considerations on runtime overhead must also include the time needed for the invocation of adaptable methods. If this is noticeably high, e.g. in relation to the runtime of the method, the adaptation mechanism has a negative impact on the performance of the mobile code.