Resource-Efficiency Testing

Introduction to Resource‐Efficiency Testing

• Introduction

• Metrics Acquisition - Windows Performance Monitor

• OPC Server test plan model

• OPC Client test plan model

• Network Failure Simulation Batch File

• Test Reports

• Next Steps

Resource-Efficiency TestingContents

Resource-Efficiency TestingIntroduction (1 of 3)

What is it? 36-hour stress-test to verify no resource leaks exist

in your product, e.g. CPU, memory, threads etc.

More info? Windows Performance Monitor is used in the lab; the

performance counter details are available online:www.opcfoundation.org/ua/ctt/help/testcases/server/all/testcases.html#Efficiency

technet.microsoft.com/en-us/library/cc768048.aspx

What is tested? UA Servers/Clients, OPC Classic Servers/Clients

Easy to test? Yes, but several other OPC products are required to

generate a load on the product being tested.

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You

Resource-Efficiency TestingIntroduction (2 of 3)

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How it works: UA and Classic products are tested the same way:

Servers:- multiple device (PLC) connections; 1 is intermittent

- 5 or more OPC Client connections, 1 is intermittent

Clients: - 5 or more OPC Server connections, 1 is intermittent

Load is placed on the product for stress-testing.

Resources are measured over 36-hours.

Test authors? Compliance Working Group

Resource-Efficiency TestingIntroduction (3 of 3)

How do I pass? No resource leaks or performance degradation.

Am I Certified? No. It means that your product is a good candidate

for certification testing in a Test Lab.

Lab tools used? Windows Performance Monitor, network fault

simulation BAT file, also:

Servers: 2 or more PLCs; 5 or more OPC Clients.

Clients: 5 or more OPC Servers.

Test when? As frequently as possible, and on any official build

whether it is alpha, beta, or release etc.

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Resource-Efficiency TestingWindows Performance Monitor (1 of 6)

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Configure the Windows Performance monitor to record the performance counters for 36‐hour duration• Click Start, click in the Search box, type perfmon.msc, and then press ENTER.

Perfmon.msc

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Resource-Efficiency TestingWindows Performance Monitor (2 of 6)

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Create a Data Collector Set to store the data values recorded for the 36‐hour test.

Specify the directory you want to store the 

file

Create a new Data collector set to record the data

Click finish to create the Data collector 

set

Resource-Efficiency TestingWindows Performance Monitor (4 of 6)

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Configure the Process, Processor, Threads, Handles, and other counters for the instances of your product:  

Step 3: Pick the Client/Server  Process 

(must be running to appear in the this list)

Step 4: Choose the performance counters 

from the list

Step 1: Double click “Performance Counter ” to select 

the counters

Step 2: Click “Add” to specify the resources to monitor

Step 5: Select the log format. Test lab uses comma separated format to record the values for the counters 

selected.

Resource-Efficiency TestingWindows Performance Monitor (5 of 6)

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Setup a 36‐hour stop condition in the Data Collector Set properties to stop recording:

Setup the duration to 36 

hours 

Click OK to apply the changes

Resource-Efficiency TestingWindows Performance Monitor (6 of 6)

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Setup the stop condition in the Data Collector Set properties to stop recording the data values after 36 hours.

Measurements can be displayed in a chart, as well as being logged to a file (as previously configured).

Click the Triangle icon to start monitoring…

Resource-Efficiency TestingTest Plan Model – Server (1 of 2)

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Device 1(e.g. PLC)

Device 2(e.g. PLC)

Remote PC1Classic/UA Client 

with max no of Tags Supported

• An OPC Server is configured with 2 devices (PLCs)• Typically, 5 Clients are connected, with approx. 1000+ items each• Make 1 Device and 1 Client go online/offline every 2‐minutes

Remote PC2Classic/UA Client 

with max no of Tags Supported

Remote PC3Classic/UA Client 

with max no of Tags Supported

Remote PC4Classic/UA Client 

with max no of Tags Supported

Remote PC5Classic/UA Client 

with max no of Tags Supported

Local Client (if available)UA/Classic Server 

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Resource-Efficiency TestingTest Plan Model – Server (1 of 2)

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Remote PC1Classic/UA Server with max no of Tags 

Supported

• An OPC Client is connected to 5 or more OPC Servers, each approx. 1000+ items• Make 1 Server go online/offline every 2‐minutes

Remote PC2Classic/UA Server with max no of Tags 

Supported

Remote PC3Classic/UA Server with max no of Tags 

Supported

Remote PC4Classic/UA Server with max no of Tags 

Supported

Remote PC5Classic/UA Server with max no of Tags 

Supported

Local Server (if available)UA/Classic Client

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@echo offSET DTIME=120CLSECHO Delay time is: %DTIME%ECHO Network Connection Enabler/Disabler started at: %date% %time%

:startECHO Disabling network adapter at %time%netsh interface set interface "Local Area Connection" DISABLED

timeout /t %DTIME%ECHO Enabling network adapter at %date% %time%netsh interface set interface "Local Area Connection" ENABLED

choice /c:yn /m "Repeat network adapter recycle (y/n)?" /t %DTIME% /d yECHO %ERRORLEVEL%IF ERRORLEVEL 2 GOTO endIF ERRORLEVEL 1 GOTO start

:endECHO.ECHO Network adapter recycle complete at %date% %time%

@echo offSET DTIME=120CLSECHO Delay time is: %DTIME%ECHO Network Connection Enabler/Disabler started at: %date% %time%

:startECHO Disabling network adapter at %time%netsh interface set interface "Local Area Connection" DISABLED

timeout /t %DTIME%ECHO Enabling network adapter at %date% %time%netsh interface set interface "Local Area Connection" ENABLED

choice /c:yn /m "Repeat network adapter recycle (y/n)?" /t %DTIME% /d yECHO %ERRORLEVEL%IF ERRORLEVEL 2 GOTO endIF ERRORLEVEL 1 GOTO start

:endECHO.ECHO Network adapter recycle complete at %date% %time%

Resource-Efficiency TestingBatch File

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• To toggle the enabled state of the “Local Area Connection” network adapter in a windows environment use the below batch file.

• Replicate the following text into file “NIC.BAT” and run it using Administrator/elevated permission.

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Resource-Efficiency TestingReports

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In Certification testing, the Test Lab will generate a resource Data report that is generated from the data collected by the Windows Performance Monitor:  

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Resource-Efficiency TestingNext Steps…

If no growth is detected in your Classic/UA product then you are ready for Lab Certification:

• Request Certification in the Test Lab:www.opcfoundation.org/certification/schedule-testing

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Certification: www.opcfoundation.org/certification

Lab Testing: www.opcfoundation.org/certification/schedule-testing

Bug Tracker: www.opcfoundation.org/mantis

Contact: compliance@opcfoundation.org

Resource-Efficiency TestingThe End!