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From sebb <seb...@gmail.com>
Subject Re: Concurrent Samplers in JMeter
Date Wed, 20 Feb 2008 10:50:25 GMT
On 20/02/2008, nncs2206 <vina58@gmail.com> wrote:
>
> Hi Roy & Geezenslaw,
>
> Thanks for your inputs.
>
> Let me clear out my requirements.
>
> 1. I'll have a launch and login page (for which 2-3 requests get recorded)
> and they all can go sequentially.
> 2. Once after logging in i'll have to click a tab (based on Ajax) wherein it
> records five requests. However as you all know by default JMeter sends all
> those requests in a sequential manner. But in the reality even in the
> browser, all the 5 requests will hit the server at the same time. Hence the
> response times is not the cumulative time for each of them. Its just one
> request response time..I'm even using IE Inspector tools like "HTTP Watch"
> to trace out the real response times and its very less compared to JMeter
> (since its only one request response time)
>
> In Load Runner tool, this can be overcome by using web_concurrent_start()
> and web_concurrent_end() function. But now the main limitation in JMeter is
> there is no such functionality.
>
> Even your solution of placing in multiple thread groups will not help me
> because i have launch, login which is to be preceded before this 3rd request
> of clicking on the tab.
>
> So need help in order to overcome the same.
>

JMeter does not yet support concurrent downloading.
There are no plans as to when - or if - this will be included.

However, just because it does not emulate browser behaviour exactly
does not mean it is not useful for testing servers.

> Regards,
> Vina Sravanthi
>
>
> geezenslaw wrote:
> >
> > Hello Me vina, Roy's suggestions are good and correct. I would also like
> > to share that I have had concurrency problems with JMeter previously. And,
> > I got a very good result by using the JMeter jmeter-server.sh(bat) remote
> > slave concept. If you can muster several client machines of anytype: old
> > laptops, old towers (Linux, Windows matters not). Then just copy install
> > the JMeter directory onto the remote laptops or towers and run the script.
> > Then from your JMeter master client just run your Test Plan from the menu:
> > run/remote --> <ip address> that shows up from the jmeter.properties file.
> > Your ThreadGroup(s) can have only one sampler but you can as Roy says run
> > several ThreadGroups. Use a Ramp Time of 1 sec (default) in a loop of as
> > many as required to get your application to fail. This is usually not too
> > many 25 to 50 I would say for the loop count max but of course this
> > depends on how much muscle you have in your system. The previous sentence
> > is from memory so my info is not
> >  concise but you get the idea especially if you dig into the JMeter doco:
> >
> > http://jakarta.apache.org/jmeter/usermanual/jmeter_distributed_testing_step_by_step.pdf
> >
> > The JMeter HTML doco on distributed testing warrants review too. HTH.
> >
> > Me vina wrote ..
> >> Hi All,
> >>
> >> By default JMeter sends all the samplers sequentially. Is there any
> >> methodology to send the requests concurrently at the same time i.e.
> >> something similar to web_concurrent_start () and web_concurrent_end ()
> >> functionality in Load Runner. Any thoughts / ideas in this regard?
> >>
> >> Appreciate any quick response in this regard.
> >>
> >> Thanks,
> >> NNCS
> >
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> >
> >
> >
> :-)
> --
> View this message in context: http://www.nabble.com/Concurrent-Samplers-in-JMeter-tp15561344p15581833.html
> Sent from the JMeter - User mailing list archive at Nabble.com.
>
>
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