VxWorks vs. RTEMS

[Jack Cawkwell]

gregory.menke at gsfc.nasa.gov on Monday, August 9, 2004 at 4:22 AM  wrote:

...
>> One of the reasons that vxWorks and RTEMS are so
>> much faster than conventional operating systems is 
>> they don't have to spend time fooling around with vm
>> hardware whenever a context switch occurs- thats the
>> tradeoff you make; speed vs protection. 
...

Slightly off the topic: is this important in life 
critical applications? Would authorities approving 
critical systems be happier, or even insist on, using 
hardware context switching, for reasons of safety?

Jack