Load Testing Tool ERROR

Wowza Streaming Engine
1

Hi Richard,

I got “NullPointerException” at my first attempt running load testing tool.

Need your help to figure out the problem.

Thanks a lot.

Here is my Error Log & Test.xml:

ERROR server comment - IdleWorkerUtil: run.work : java.lang.NullPointerException|at com.wowza.wms.httpstreamer.model.HTTPStreamerContext.onIdle(HTTPStreamerContext.java:115)|at com.wowza.wms.util.IdleWorkerUtil.run(IdleWorkerUtil.java:111)|
INFO server comment - MediaCasterStreamValidator.init[live/_definst_]: Started
INFO application app-start _definst_ live/_definst_
ERROR server comment - PerformanceTest : java.lang.NullPointerException|at com.wowza.wms.performance.remote.PerformanceRemoteClientTest.run(PerformanceRemoteClientTest.java:160)|at com.wowza.wms.performance.PerformanceTest.run(PerformanceTest.java:57)|at com.wowza.wms.performance.PerformanceTestList.run(PerformanceTestList.java:68)|at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)|at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)|
INFO server comment - Status running:0 currBehind:0


<Root>
	<Tests>
		<Test>
			<Name>live</Name>
			<ClassBase>com.wowza.wms.performance.remote.PerformanceRemoteClientTest</ClassBase>
			<Properties>
				<Property>
					<Name>workerCount</Name>
					<Value>2</Value>
					<Type>Integer</Type>
				</Property>
				<Property>
					<Name>fileCount</Name>
					<Value>0</Value>
					<Type>Integer</Type>
				</Property>
				<Property>
					<Name>streamName</Name>
					<Value>ftvn_sp.sdp</Value>
				</Property>
				<Property>
					<Name>streamExt</Name>
					<Value></Value>
				</Property>
				<Property>
					<Name>vhostName</Name>
					<Value>_defaultVHost_</Value>
				</Property>
				<Property>
					<Name>connectionString</Name>
					<Value>live/_definst_</Value>
				</Property>
				<Property>
					<Name>bufferTime</Name>
					<Value>3000</Value>
					<Type>Integer</Type>
				</Property>
				<Property>
					<Name>doRandom</Name>
					<Value>false</Value>
					<Type>Boolean</Type>
				</Property>
				<Property>
					<Name>doRepeat</Name>
					<Value>true</Value>
					<Type>Boolean</Type>
				</Property>
				<Property>
					<Name>ipAddress</Name>
					<Value>210.xxx.xxx.xxx</Value>
				</Property>
				<Property>
					<Name>ports</Name>
					<Value>1935</Value>
				</Property>
			</Properties>
		</Test>
		<Test>
			<Name>vod</Name>
			<ClassBase>com.wowza.wms.performance.remote.PerformanceRemoteClientTest</ClassBase>
			<Properties>
				<Property>
					<Name>workerCount</Name>
					<Value>1</Value>
					<Type>Integer</Type>
				</Property>
				<Property>
					<Name>fileCount</Name>
					<Value>0</Value>
					<Type>Integer</Type>
				</Property>
				<Property>
					<Name>streamName</Name>
					<Value>sample</Value>
				</Property>
				<Property>
					<Name>streamExt</Name>
					<Value>.mp4</Value>
				</Property>
				<Property>
					<Name>vhostName</Name>
					<Value>_defaultVHost_</Value>
				</Property>
				<Property>
					<Name>connectionString</Name>
					<Value>vod/_definst_</Value>
				</Property>
				<Property>
					<Name>bufferTime</Name>
					<Value>3000</Value>
					<Type>Integer</Type>
				</Property>
				<Property>
					<Name>doRandom</Name>
					<Value>false</Value>
					<Type>Boolean</Type>
				</Property>
				<Property>
					<Name>doRepeat</Name>
					<Value>true</Value>
					<Type>Boolean</Type>
				</Property>
				<Property>
					<Name>ipAddress</Name>
					<Value>localhost</Value>
				</Property>
				<Property>
					<Name>ports</Name>
					<Value>1935</Value>
				</Property>
			</Properties>
		</Test>
	</Tests>
</Root>
2

Hi,

Ensure you are using the correct Load Test Tool version for your version of Wowza Streaming Engine or Wowza Media Server.

You may have a mis-match. When requesting the load test tool you need to specify which version of Wowza you are using

so that you are provided with the correct version of the tool.

Daren

3

Hi,

The Load Testing tool requires the defaultVHost virtual host (VHost) to have its own thread pool. By default, Wowza Streaming Engine is configured to use a server-level thread pool. To configure a VHost-level thread pool, edit [install-dir]/conf/VHost.xml and make the following changes:

  • HandlerThreadPool/PoolSize: 60 x [total-core-count]

  • TransportThreadPool/PoolSize: 40 x [total-core-count]

This is specified on page 5 from the LoadTestingTool.pdf document found in the Load Testing Tool package.

Can you check if you have this configured on your server running the Load Test Tool clients?

Zoran

4

Frank and daren_j,

I got the exact error, has this problem being solved? Please advise.

thanks you both.

Kevin

5

zoran_u,

Yes, I have, to be more specific, let’s say I have a 4 core cpu, so I would put

  • HandlerThreadPool/PoolSize: 240

  • TransportThreadPool/PoolSize: 160

is that correct? and that’s how I have done it, and still gave me an error.

Kevin

6

you can try pcloudy (www.pcloudy.com).