AW: Areadetector Plugin Enable/Disable Issue and Design Question

["Blomley, Edmund \(IBPT\) via Tech-talk" <tech-talk at aps.anl.gov>]

Hey Mark,

> First want to check that setting callbackSetQueueSize(5000) does indeed fix 
> the problem with incorrect RBV callback values? Is that true?

For the first IOC (with 6 cameras) setting "callbackSetQueueSize(5000)" fixed 
the "callbackRequest: cbLow ring buffer full" errors and the _RBV are now 
consistent with the set value instead of inverted.

For a second IOC instance with more cameras (14, but in this case only one 
will ever be active at the same time) 5000 was not enough, but with a queue 
size of around 15000 the callbeackRequest error disappeared.
What is the consequence of increasing the queue size? Would it be better to 
split up the IOC into multiple IOCs with less cameras each?

Yes, it fixed the  "callbackRequest: cbLow ring buffer full" errors and the 
_RBV are now consistent with the set value instead of inverted.

Cheers
eddy

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