While real-time applications used to be executed on highly specialized hardware and individually developed operation systems, nowadays more often regular off-the-shelf hardware is used, with a variation of the Linux kernel running on top. Within the scope of this thesis, test methods have been developed and implemented as a real-time application to measure several performance properties of the Linux kernel with regards to its real-time capability. These tests have been run against three different versions of the Linux kernel. Afterwards, the results of the test series were compared to each other.