I am using a PXI-8106 controller with LV 2010 SP1. I am attempting to write small data files (CSV format, <10KB each file) to a folder on the PXI controller that may contain up to 5000 files. I have found that the Open/Create/Replace File.vi takes 5-10min to complete executing when the input path points to the directory with many files. I am guessing this has something to do with having to generate a list of files within the directory before it can obtain the file reference. Here are some things I have determined from troubleshooting:
1. All of the files in the directory have the same prefix (i.e. TestData<date_time>_<Run1, 2, 3…>). The long execution time occurs if I attempt to write a file to the large directory with a filename containing the same prefix as the other files in the directory. But if I attempt to write a file to the large directory using a filename that begins with a different character (i.e. XestData_date_time>_<etc>), then it executes within an insignificant amount of time. These leads me to believe the search algorithm within the Open/Create/Replace.vi is at fault here.
2.
Th 2. The red “Drive” LED is illuminated on the PXI controller during execution of the Open/Create/Replace.vi, before the code has even begun writing the data file.
3. 3. A similar directory structure on a Windows platform does not replicate this issue, but instead completes within an insignificant amount of time.
Any help would be appreciated.
Thank you
Dan
