What causes memory use of my program increase? (Write to Spreadsheet? Running in LV environment? External dlls? Waveform graphs?)

Hi
I have attached a plot for the discussion here..
I am monitoring the memory usage by my VI thru calling a window's dll to keep checking that (Many thanks to Matt).
I saw raising slopes and flat (wow! First time I catch this, that's what I am expecting)
I am thinking where could there be a reason for memory growing up!
What I did:-
1. Mostly use queues (all limited # of elements) for parameters delivery between loops and between subVIs
2. I close Obtained queue ref. every time I finish with it (only leaving a few keeping alive so they won't be killed)
3. For all arrays I initialized with a fixed size array constant and do all jobs with Replace subset, Index Array and that In-place block.
Above are measures I intended to use to save memory.
However for a few points I think there might cause a memory grows, and I wish that someone can share with me your experience or give me an answer...
1. Write to spread file:-- I keep using this to log data, events into harddisk, in my use I always append new logs/data to the existing file, however I keep doing it all the time throughout the run-time.
2. Running my program in LV.exe -- I havn't compiled it yet. However when I was taking the plot's data, my PC is left with no one using it.
3. There is a couple of external dlls running -- however it sounds to me from other's view point, external dll's resource doesn't count into Labview.exe. Since I am monitoring Labview's memory use, that couldn't be a source of the raising I see from this plot, right?
4. Waveform graphs -- I am not sure whether this can be a problem. Everytime I feed data into a waveform control, I initialized a constant array and then replace elements into it, I don't think my data source is casuing any problem.
Can someone comment on my above descriptions of my program?
Raymond

vgbraymond wrote:
1. Write to spread file:-- I keep using this to log data, events into harddisk, in my use I always append new logs/data to the existing file, however I keep doing it all the time throughout the run-time.
Write to spreadsheet file is a high level VI that opens and closes the file with every call. I would recommend to open the file once at the start of the programs, then append using lowlevel functions. Close the file after the program is done.
Have you done any profiling to see which subVIs shows the bulk of the memory use?
You might also turn off debugging to see if it makes a difference. Don't open the front panel of subVIs (and avoid functions that force the front panel to be in memory) unless they need to show something important to the user.
It would really help if we could see some actual code. Can you strip it down to the essentials that still show the problem?
LabVIEW Champion . Do more with less code and in less time .

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"Jorg Mann" <[email protected]> wrote in message
news:emof0k$cqh$[email protected]..
> Hi
>
> I have a tool, written in director, that imports all
imagefiles from a
> folder and its subfolders into director cast
> It worked since years without any problem
> But now I have following problem - if the amount of
files is big enough,
> director is out of memory, can not create any new member
more
>
> I do it like this
>
> repeat with i=1 to cFileList
> cFile=cFileList
> mem = new(#image, myCast)
> mem.importFileInto(cFile, [#trimWhiteSpace:FALSE,
> #remapImageToStage:FALSE])
> mem.name=cFile
> end repeat
>
> At some moment command
> mem = new(#image, myCast)
> fails, it can happen on 500-th file in the list, or an
570-th or on some
> other point. So the problem is not in some definite
file, but in memory.
> How
> can I avoid this problem? Can I purge the memory, used
by the program till
> that moment or is there any other way do to it?
>
> Any help will be appreciated
>
>

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When I open my application the memory usage shown at Windows task manager is around 1.4GB. After running the application and enabling all processes used in the application, the memory usage goes up to 1.55GB but when i stop the application, memory is never released/deallocated until i close the application plus exit labview.
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hi,all
I have tried a simple structure as follow:
ActiveX Control is TeeChart Control which is widely used in Delphi
env.
ActiveX Control Ref |------------------------
| |
| ActiveX method |
| |
| |
| |
| i stop->@ |
As the loop execut
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> ActiveX Control is TeeChart Control which is widely used in Delphi
> env.
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What causes memory use of my program increase? (Write to Spreadshee​t? Running in LV environmen​t? External dlls? Waveform graphs?)

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What causes memory use of my program increase? (Write to Spreadsheet? Running in LV environment? External dlls? Waveform graphs?)