Sub VI to enter database data taking more time when calling from main VI

Question

Hi All,
I created a sub vi to enter data to a new database, after reading from another database. when i executed that sub vi alone, it took only 2 minutes to enter 20000 records. But when i called that sub VI from my main VI, its taking 35 minutes to enter 20000 records. 
my maiin vi has another while loop running parallelly which will perform some other operations. How to handle memory in this case? i mean when i call my sub vi from main vi, i need to give complete processor memory for that sub vi. is it possible?
please help. thanks in advance.
Sooraj

Answer 1

Hi Oliver,
in your example the numeric data is passed from sub-vi to main only when sub-vi terminates, this is what it's supposed to be when you fetch the data from the connector output of a sub-vi.
You can use queues function to exchange data between sub-vi and main.vi; take a look at the example Message Logging with Named Queue.vi.
An alternative method is passing to sub-vi a reference of an indicator (or control) and update its value on the fly.
See example.
Alberto
Attachments:
passing_data_from_sub-vi.llb ‏35 KB