[Ace-users] [tao-users] ACE (and TAO) timers for Real-Time

Thomas Lockhart Thomas.Lockhart at jpl.nasa.gov
Wed Feb 27 16:28:48 CST 2008

>  An other little question, is if the real-time performance of the ACE
>  Timer_Queue is ensured for distributed objects (if the proper network
>  is setup).

I would guess that this is not so much dependent on ACE as it is on your 
definition of "real-time" and which network stack you use.

Some would say that you would need something like RTDM within Xenomai or 
RTAI to ensure network real-time performance, but perhaps your needs are 
not quite that stringent.

You might achieve "good enough" by using local timing services and local 
NTP to get within a few microseconds, but of course that would not 
guarantee execution ordering between distributed processes.


                         - Tom

Thomas Lockhart
Supervisor, Realtime Software Group
Interferometry and Large Optical Systems

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