Abstract : Computing applications are often written using a high level computer language for programming and an operating system for execution handling. A family of programming languages (CPL for "Compiled Parallelism Languages") offers features and advantages similar to a programming language coupled with a multi-task operating system. We intend here to point out that CPLs bring several more advantages in term of performances especially for embedded real-time applications. To carry this out, we developed several versions of an application using a CPL on one hand, and a common language with an operating system on the other hand. We then compared the versions.