How to increase write speed using queues

Question

Hi,
    I am using a vi to read in two sets of data over a serial port.  I then write the data to a spreadsheet.  I do this by sending the data to a queue when I depress a record data button on the vi.  The queue then  writes the data to a file in another loop.  I based this off of a producer consumer architecture.  The setup works great but I have noticed that when record data for long periods of time (2 minutes or more) it takes an extremely long time after I have stopped recording data for the information to be written to a file.  Is there anyway to improve my write to file speed?  Thanks for all of your help and I am attatching my VI.
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Attachments:
Read_Write_Transmit_Record_IMU_V_4.vi ‏89 KB

Answer 1

Yes. you could definitely accumulate the data in a 2-D array in the producer.
What I would do, since now you are adding more requirements to the code, would be to turn to add an enum along with the data you send through the queue to the consumer loop.  The enum would be commands such as Open File, close file, log data, write to file, exit loop.  Attached is an example of one I wrote that I encapsulated in a subVI that runs parallel to other code.
Attachments:
CTA Data Logger text.vi ‏55 KB