Applications for registration of data is not juggling

I have an application that is reading data of a ring memory reflective and then written to a RAID (NI 826 x) in a PXI chassis.  The application must read and write 5 separate data streams, 3-1at 20 Hz and 1 to 10 Hz 100 Hz.  LV 8.61 using on a regular PXI chassis.  Currently, the application has a separate loop for each stream of data to be read from reflective memory and a separate loop for each stream of data to write to the disk.  The app works very well but from time to time (3 to 4 times in a two hour period), the loops that read stall reflective memory momentarily and as a result, data are lost.  The rings of memory are such that for flows of 100 Hz, the memory must be read at least once every second (100 elements of the ring).  An approximation of the time loop is usually a little more than a second.  When the reference of the elements in the ring has been set at 50, the time of the 'fail' loop was a little more than 500 ms (do not understand this).  I use a file regular write to write to the disk.  In a system not real time is this normal?  Can it be prevented?

Any input appreciated.

Thank you

Craig

It has been many years, but I remember a problem with a RAID controller and "written" in an industrial PC.

I was running under Windows XP operating system, by using the provider-specific triggers. I ended up adding the 'File Flush' function. I don't remember if I called him every time, or if it were every n-th iteration of the loop of Scripture (quotient and remainder function).

http://zone.NI.com/reference/en-XX/help/371361E-01/Glang/flush_file/

"This function forces the operating system to write data from the buffer to the file."

Tags: NI Software

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