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From Deepak Shetty <shet...@gmail.com>
Subject Re: HTTP Sampler + Javascript causes lock contention
Date Fri, 15 Aug 2014 21:24:42 GMT
Not sure which ms you are referring to
${__time(yyyy-MM-dd hh:mm:ss.SSS)}  //date formatted with milliseconds
${__time(/1)} //milliseconds

regards
deepak


On Fri, Aug 15, 2014 at 1:56 PM, Daniel Pub <dca.pub@gmail.com> wrote:

> Hi Jeff
>
> No, we are using a function to get the timestamp in milis. From what I
> could see there's no built in function for that. The time function seems to
> only accept some patterns and none is the time in millis.
>
> Thanks
>
>
> 2014-08-15 16:44 GMT-03:00 Jeff Ohrstrom <johrstrom@hotmail.com>:
>
> > Yes unfortunately it does block on JavaScript. I'm not sure why that
> > approach was taken but there are workarounds. Are you by chance using
> > the javascript encode function?  They've given a JMeter Encode function
> > in 2.10 and up.
> >
> > My suggestion is avoid JavaScript and use a JSR223 Pre (or Post)
> > processor with Groovy and the appropriate cache size if you can't find a
> > JMeter built in function that's appropriate.
> >
> >
> > On Fri, 2014-08-15 at 12:10 -0300, Daniel Pub wrote:
> > > Hi all,
> > >
> > > During a load teste we've noticed that JMeter was presenting a response
> > > time much bigger than the tested component. Taking some thread dumps we
> > > found that on a total of 200 threads, 170 were locked at some
> javascript
> > > object.
> > >
> > > This was due to the usage of a JavaScript function in the body of the
> > HTTP
> > > payload. Do we really have to use a shared object for javascript and
> then
> > > lock it causing this contention?
> > >
> > > Bellow, my thread dump:
> > >
> > >
> > > "Thread XXXX 1-200" prio=10 tid=0x00002aaab105e800 nid=0x34ec waiting
> for
> > > monitor entry [0x000000005a3ff000]
> > >    java.lang.Thread.State: BLOCKED (on object monitor)
> > > at org.apache.jmeter.functions.JavaScript.execute(JavaScript.java:65)
> > > - waiting to lock <0x000000070158e538> (a
> > > org.apache.jmeter.functions.JavaScript)
> > > at
> > >
> >
> org.apache.jmeter.engine.util.CompoundVariable.execute(CompoundVariable.java:146)
> > > at
> > >
> >
> org.apache.jmeter.engine.util.CompoundVariable.execute(CompoundVariable.java:120)
> > > at
> > >
> >
> org.apache.jmeter.testelement.property.FunctionProperty.getStringValue(FunctionProperty.java:101)
> > > at
> > >
> >
> org.apache.jmeter.testelement.AbstractTestElement.getPropertyAsString(AbstractTestElement.java:274)
> > > at org.apache.jmeter.config.Argument.getValue(Argument.java:146)
> > > at
> > >
> >
> org.apache.jmeter.protocol.http.util.HTTPArgument.getEncodedValue(HTTPArgument.java:199)
> > > at
> > >
> >
> org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sendEntityData(HTTPHC4Impl.java:1168)
> > > at
> > >
> >
> org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.handleMethod(HTTPHC4Impl.java:422)
> > > at
> > >
> >
> org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sample(HTTPHC4Impl.java:296)
> > > at
> > >
> >
> org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:74)
> > > at
> > >
> >
> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1105)
> > > at
> > >
> >
> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1094)
> > > at
> > >
> >
> org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:429)
> > > at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:257)
> > > at java.lang.Thread.run(Thread.java:745)
> > >
> > >
> > > Thanks,
> > > Daniel
> >
> >
> >
> > ---------------------------------------------------------------------
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> > For additional commands, e-mail: user-help@jmeter.apache.org
> >
> >
>

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