Prioritizing Channel Access per Record?

[Brian Bevins <bevins@jlab.org>]

Is there any way to specify that CA delivery of updates from certain 
records should be prioritized over other records on the same ioc?
I've got an application where a bunch of ai's are processed at 10Hz and 
some relatively big (for us) waveforms are processed at about 0.3-0.5 
Hz. The ioc is not heavily loaded and all record processing seems to 
happen in a timely way, but from the client end (EDM) the "fast" records 
all pause for ~0.5 sec whenever the waveforms push out their CA updates.
The ai's are already being processed at a higher priority, but this 
doesn't seem to help their updates get pushed out with higher priority.
Is there some tinkering I can do with the priorities of the CA threads 
to get what I want? How can I tell which thread will get which record 
updates? Is there something more obvious I'm missing?
Thanks,
--Brian

--
Brian S. Bevins, PE
Computer Scientist / Mechanical Engineer
Thomas Jefferson National Accelerator Facility

     "The urge to save humanity is almost always only a false-face
      for the urge to rule it."
                                     -- H. L. Mencken