Which is better RTOS - QNX or VxWorks (:-)

Dheerajs · November 6, 2006, 3:38pm

Hi,

Just starting this thread, to get the more understanding between the QNX and VxWorks.

Cheers,
Dheeraj

mario · November 6, 2006, 4:38pm

The figure out which is better, you first need a set of requirement to compare them against. What are you requirement?

What I have heard though is that people that have worked with both seems to prefer QNX when it comes to the OS, but VxWorks when it comes to the development environment. But I guess with the new IDE based on Eclipse ( which VxWorks is using as well ) QNX IDE is definitely gaining grounds.

Dheerajs · November 9, 2006, 6:50am

Ok,
let’s talk in the following terms,

Memory footprint
Scheduling Algorithms : Flexibility to choose on process basis
Timeslice granularity : Flexibility to define on Process basis if possible
IPC methods efficiency and overhead

mario · November 9, 2006, 7:08am

Talk to your QNX rep, they have a document ( apparently wrote by a third party ) that compares QNX6 / VxWorks / WinCE.

Dheerajs · November 9, 2006, 8:19am

Is this available somewhere on net also!!

mario · November 9, 2006, 2:52pm

Not that I know of.

seanb · November 9, 2006, 3:29pm

Look at:

qnx.com/download/group.html?programid=7795

ettikudiappan · January 18, 2007, 10:52pm

Well my two cents worth
QNX is a memory protected micro kernel OS, which means your programs run in their own memory space chances of one stamping on another’s memory is zero.
VxWorx does not segregate kernel and user memory space, thereby providing the fastest communication between applications and kernel but there is still a danger of memory corruption.