QAbstractItemView calls invokeMethod() each time the rowsInserted() signal of it's model is emitted, posting an event.

QAbstractItemView calls invokeMethod() each time the rowsInserted() signal of it's model is emitted, creating an event. This can become a problem is many rows are inserted, one by one, without returning to the event loop in between since one event is then created and posted for each row.

This becomes a bigger problem when using QtMotif since the wakeUp() implementation of that one (which ends up being called by postEvent()) adds a timeout for each call, thus one gets a lot of timers. But this can also be a problem of it's own.