How can I speed up this VI? It only checks 6 channels, but updates only 20/sec

I am measuring 6 channels of current in this VI. It will only update about 20 times per second.
The VI is quite simple. It measures current on 6 channels, performs a running average using shift registers, and performs some math on the current to convert it to loads. It also writes all values to a file once per iteration. I ran a similar VI that only checked 4 channels and did not write to the file, but it is not much faster. I also tried to make sure all coercion dots were eliminated, but that did not help much either.
Can anyone take a quick look and see if there is something obvious I am doing that is slowing it down? Or is this a reasonable update rate for this VI?
The top-l
evel VI is the one called "RunTestBed 24v loop loop.vi".
Thanks!
Mike
Attachments:
RunTestBed_24v_loop_loop.llb ‏349 KB

You are using high lvel VI to do you I/O inside the loop.
Take a look at the shipped example that demonstrates how to start a do a continuous acquisition.
The example is title something like
Continuous double buffered acquisition.
The High VI's you are using are configuring the I/O and allocating buffers durring each iteration. THe eaxample I mentioned will do all of this one up front and then just re-use everything inside the loop.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

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Date: Thu, 26 Jan 2012 11:33:15 -0700
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