Desktop Execution Trace Toolkit: "unknown leak" from event "reference leak"

[BigShotEngineer]

Does anyone know what "unknown leak" means?  is it bad? Thanks. 

[LindyHop]

Hello BigShotEngineer,

Can you list what versions of software you're using? LabVIEW, DAQmx, etc.

Also if you run some shipping examples that come with LabVIEW do you get the same notifications? Also is your program behaving incorrectly in some way like erroring or using excessive amounts of your CPU? 

[BigShotEngineer]

So by asking more questions about my question, are you implying you don't know if it's harmless or not?  Yikes 😞  

Which "shipping" examples are you referring to?  

Luckily, there aren't any errors when I'm using the VI.  The only strange behavior is that sometimes Labview will crash with 0xC0000005 if I hit stop and then I hit run again within a few seconds.  I guess sometimes labview needs to rest? 

I'm using Labview 2013 and DAQmx 9.7.5.  Below are the software installed on this machine.  Thanks. 

Spoiler

Name Version
Advanced Signal Processing Toolkit 13.0.0
C Series Module Support 13.0.0
Common 12.0.20.258
Common 13.0.35.190
Common 13.0.40.190
Common 13.0.40.190
Common (64-bit) 13.0.35.190
Common (64-bit) 13.0.40.190
Common (64-bit) 13.0.40.190
CompactRIO 13.0.0
Configuration Support 2.9.3
Configuration Support 1.8.5
Configuration Support 2.7.5
Configuration Support 1.9.5
Configuration Support 4.0.5
Core 13.0.0.242
Core 13.0.0.242
Core 13.0.0.242
CVI 13.0.0
CVI AddOns LabWindows/CVI Shared AddOns
CVI Run-Time 13.0.0.632
Database Connectivity Toolkit 13.0.0
DataSocket 13.0.35.242
DataSocket 13.0.40.242
DataSocket 13.0.45.242
Design 13.0.35.242
Design 13.0.40.242
Design 13.0.45.242
Design (64-bit) 13.0.35.242
Design (64-bit) 13.0.40.242
Design (64-bit) 13.0.45.242
Development Support 2.9.3
Development Support 1.8.5
Development Support 2.7.5
Development Support 1.9.5
Development Support 4.0.5
Digital Filter Design Toolkit 13.0.0
DMM Soft Front Panel 3.1.0
DotNET
DotNET
DotNET
DotNET
FGEN Soft Front Panel 2.7
Gpib 13.0.35.159
Gpib 13.0.40.159
Gpib 13.0.45.159
Gpib (64-bit) 13.0.35.159
Gpib (64-bit) 13.0.40.159
Gpib (64-bit) 13.0.45.159
Image Processing and Machine Vision 13.0.0.49156
Integration 13.0.35.242
Integration 13.0.40.242
Integration 13.0.45.238
IVI Compliance Package 4.6
LabVIEW 13.0.0
LabVIEW Run-Time 2010 SP1 10.0.1
LabVIEW Run-Time 2011 SP1 f2 11.0.1
LabVIEW Run-Time 2012 SP1 f3 12.0.1
LabVIEW Run-Time 2012 SP1 f3 (64-bit) 12.0.1
LabVIEW Run-Time 2013 13.0.0
LabVIEW Run-Time 8.5.1 8.5.1
MathScript RT Module 13.0.0
Measurement & Automation Explorer 5.5.0f0
Measurement Studio Visual Studio 2005 Support - See individual versions below.
Measurement Studio Visual Studio 2008 Support - See individual versions below.
Measurement Studio Visual Studio 2010 Support - See individual versions below.
Measurement Studio Visual Studio 2012 Support - See individual versions below.
NationalInstruments.DAQmx 9.6.35.292
NationalInstruments.DAQmx 9.6.40.292
NationalInstruments.DAQmx 9.6.45.292
NI FlexRIO 13.0.0f0
NI I/O Trace 3.1.0f0
NI Motion Assistant 13.0.0
NI PXI Platform Services 3.2.3
NI R Series Multifunction RIO 13.0.0
NI Script Editor 1.3.4
NI SignalExpress 7
NI SoftMotion 13.0.0
NI System Configuration 5.5.0f0
NI TestStand 5.1
NI Vision Run-Time 13.0.0
NI-488.2 Software 3.1.1
NI-DAQmx ADE Support 9.7.5
NI-DAQmx Device Driver 9.7.5f1
NI-DAQmx MAX Configuration 9.7.5
NI-DCPower
NI-DCPower Soft Front Panel 1.8.5
NI-DMM 3.1.0
NI-FGEN
NI-HSDIO 1.9.5.0
NI-HWS 1.5.1
NI-IMAQ I/O 2.7.0
NI-IMAQ Software 4.7.3
NI-IMAQdx 4.2.0
NI-Motion 8.5.0.3000
NI-PAL Software 2.9.1
NI-RFSA
NI-RFSA Soft Front Panel 2.6.1
NI-RFSA Soft Front Panel (Classic) 2.5.2
NI-RFSG
NI-RFSG Soft Front Panel 1.9.5
NI-RIO 13.0.0
NI-SCOPE
NI-Serial Software 4.0.0
NI-SWITCH 4.6.5f0
NI-Sync 3.4.0
NI-TClk 1.9.3
NI-USI 2.0.1.5249
NI-VISA 5.4
NI-VISA Runtime 5.4
NIvisaic.exe 5.4.0.49152
NiVisaServer.exe 5.4.0.49152
PID Control Toolkit 13.0.0
PID Toolkit 2.1.0
Profiler Toolkit 1.0.0
Real-Time 13.0.0
Report Generation Toolkit For Microsoft Office 13.0.0
Run-Time 2.9.3
Run-Time 1.8.5
Run-Time 2.7.5
Run-Time 1.9.5
Run-Time 4.0.5
SCOPE Soft Front Panel 4.0.5
Services 13.0.0.49156
Signal Processing Toolkit 7.0.2
Soft Front Panel 4.6.5.49152
SQL Toolkit 2.2.0
System Identification Toolkit 2013
Tdms 13.0.35.242
Tdms 13.0.40.242
Tdms 13.0.45.242
Tdms (64-bit) 13.0.35.242
Tdms (64-bit) 13.0.40.242
Tdms (64-bit) 13.0.45.242
UI 13.0.35.242
UI 13.0.40.242
UI 13.0.45.242
UI (64-bit) 13.0.35.242
UI (64-bit) 13.0.40.242
UI (64-bit) 13.0.45.242
UI.WebForms 13.0.35.242
UI.WebForms 13.0.40.242
UI.WebForms 13.0.45.242
UI.WebForms (64-bit) 13.0.35.242
UI.WebForms (64-bit) 13.0.40.242
UI.WebForms (64-bit) 13.0.45.242
Unit Test Framework Toolkit 13.0.0
VI Analyzer Toolkit 13.0.0
Visa 13.0.35.167
Visa 13.0.40.167
Visa 13.0.45.167
Visa (64-bit) 13.0.35.167
Visa (64-bit) 13.0.40.167
Visa (64-Bit) 13.0.45.167
Vision 13.0.20.101
Vision 13.0.35.101
Vision Builder AI 5.0.3
Vision Development Module 13.0.0
WPF.Controls 13.0.40.242
WPF.Controls 13.0.45.242
WPF.Controls (64-bit) 13.0.40.242
WPF.Controls (64-bit) 13.0.45.242
WPF.Controls.Design 13.0.40.242
WPF.Controls.Design 13.0.45.242
WPF.Controls.Design (64-bit) 13.0.40.242
WPF.Controls.Design (64-bit) 13.0.45.242

[GabeG]

Reference leaks occur when LV creates a reference, one of those olive green wires, and it never gets explicitly closed. I have run into these problems before. Usually they are harmless if you are not generating a ton of references or the references are to small amounts of memory. Two things to look for. If you're on windows, you can look at the task manager or simliar on another platform and see if the LV process is taking up increasing amounts of memory. Also if your program slows down over time, that is another sign. Try adding some companion close vi's to your application and see if the leaks disappear.

Closing References