According to the manual, TickTime is for triggering tick() function.
Does it also influence frequency of data snapshot requests to the broker api?

Quote:
For streaming data the plugin must trigger a callback function.

Does it mean that in the current IB plugin it is not defined?
Is this then to be used in reqMktData() call?

The context for my questions is not that I want to execute an HFT strategy. It is rather to make sure that O-H-L-C are as correct (reflect full market activity and equal to historical bars) as possible.