oscarc Posted June 9, 2009 Report Posted June 9, 2009 Hi, I have a program which is supposed to measure with a daq during 20 seconds every 30 seconds, and then perform an ftt, and then save the data. The problem is, I get performance leaks, and this app. is supposed to run for a couple of days. The number of cycles it manages to measure decays almost exponentially. I first tried a version with queues, where after each 20 seconds, data was stored in the queue, and then obtained for further analysis. And, I did release the queue every cycle, thought that might be good just in case. But, now I tried using global variables instead, and that also gets clogged down; I guess there must be something else slowing down my VI, but I can't figure it out. I have a couple of shift registers, perhaps that is what is causing the bad performance? I will attach som pictures of the VI: Regards Oscar Quote
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