# Load test for recording doesn't seem to work

**URL:** <https://community.wowza.com/t/load-test-for-recording-doesnt-seem-to-work/35729>\
**Category:** Wowza Streaming Engine\
**Created:** [February 6, 2015, 10:59am UTC](https://community.wowza.com/t/load-test-for-recording-doesnt-seem-to-work/35729 "2015-02-06T10:59:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Hobbes\_Pirakitti](https://avatars.discourse-cdn.com/v4/letter/h/8edcca/32.png) [@Hobbes\_Pirakitti](https://community.wowza.com/u/Hobbes_Pirakitti)\
**Post date:** [February 6, 2015, 10:59am UTC](https://community.wowza.com/t/load-test-for-recording-doesnt-seem-to-work/35729/1 "2015-02-06T10:59:58Z")

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I’m trying to see how many simultaneous webcam recording sessions our Wowza Server can support. I am following the instructions here:

[https://www.wowza.com/resources/LoadTestingTool.pdf](https://www.wowza.com/resources/LoadTestingTool.pdf)

The performance.bat file seems to run, but I’m not getting any traffic to the server. Here’s the output of performance.bat:

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```auto
C:\Program Files (x86)\Wowza Media Systems\Wowza Streaming Engine 4.1.1\bin>performance.bat record-test
Tuning: -Xmx10000M -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:NewSize=512m -server -Djava.net.preferIPv4Stack=true -Xmx3000M
Configure logging: file:///C:/Program Files (x86)/Wowza Media Systems/Wowza Streaming Engine 4.1.1/conf/log4j.properties
INFO server comment - test: ****PerformanceRemoteClientTest*****
INFO server comment - workerCount: 1
INFO server comment - fileCount: 0
INFO server comment - streamName: XXXSTREAMNAMEXXX
INFO server comment - streamExt:
INFO server comment - vhostName: _defaultVHost_
INFO server comment - connectionStr: XXXSTREAMNAMEXXX/_definst_
INFO server comment - doRandom: false
INFO server comment - doRepeat: true
INFO server comment - ipAddress: XXX.XXX.XXX.XXX
INFO server comment - ports: 80
INFO server comment - bufferTime: 3000
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[XXXSTREAMNAMEXXX/_definst_]: Started
INFO application app-start _definst_ XXXSTREAMNAMEXXX/_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:62)|
INFO server comment - Status running:0 currBehind:0
INFO server comment - Status running:0 currBehind:0
INFO server comment - Status running:0 currBehind:0
... and more lines like this

```

(Some identifying information has been X’ed out.)

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What do I do to troubleshoot?

Hobbes

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<div class="post-metadata">

**Author:** ![Hobbes\_Pirakitti](https://avatars.discourse-cdn.com/v4/letter/h/8edcca/32.png) [@Hobbes\_Pirakitti](https://community.wowza.com/u/Hobbes_Pirakitti)\
**Post date:** [February 6, 2015, 11:12am UTC](https://community.wowza.com/t/load-test-for-recording-doesnt-seem-to-work/35729/2 "2015-02-06T11:12:49Z")

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Never mind. The PDF on the Wowza site is actually out of date and doesn’t match the PDF that came with the load test tool (!). I followed the instructions in the new PDF and here

> [@Load Testing Tool ERROR](http://community.wowza.com/t/-/42609):
>
> 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\_]: Starte…

Hobbes