DEC 00/ S-31
KHAN/KSU
Text Box: MEDIANET Networking and Media Communications Research Laboratory
MEDIANET
 Networking and Media Communications Research Laboratory
Comments on Systems Engineering
•Multiprocessing & multithread capsules
–Few node OS/EE seems to lack support for complex application execution model. But, our experience is that for the middle-box model, such models are indispensable (MPEG-2 decode/ reencode threads)
•Event driven model?
–Few OS/EE have been modeled as 100% event driven model. However, a mixed model perhaps is desirable. After all a continuous data stream can cause havoc in performance in event driven I/O. 
•Cost of structural conversion?
–Have active network community thought about legacy applications? ANTS and few others requires middle-box to cast in a specific program forma. It will be nice to have an automatic tool which will reengineer a middle box written in legacy forma to  that forma.