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From sebb <seb...@gmail.com>
Subject Re: Follow up on streaming media
Date Fri, 13 Mar 2009 14:24:56 GMT
On 13/03/2009, Abel MacAdam <abel.macadam@gmail.com> wrote:
>
>  1000 Threads in 10 seconds looping forever was a test I performed today.
>  Although it ran I'm having issues with the correctness of the test. So
>  therefore this question.
>
>  So JMeter waits 'until the GET request has completed.' As a result, the
>  librarian started reading the first page. But will the librarian keep on
>  reading according to JMeter?

This is not up to JMeter. JMeter reads data until the server tells it
there is no more to come - or disconnects.

I don't know what the server does.

>  If so, what would be a more appropriate test?

What are you trying to prove?

>  Start a thread, and add an assertion that the film completes within the
>  allotted time? How?

Please read the manual:

http://jakarta.apache.org/jmeter/usermanual/component_reference.html#Duration_Assertion

>  And how would I simulate several users at the same time?

Please read the manual:

http://jakarta.apache.org/jmeter/usermanual/component_reference.html#Thread_Group

>  Is JMeter an appropriate system to test the load of a streaming media
>  server?
>
>  Thanks.
>
>
>
>  sebb-2-2 wrote:
>  >
>  > On 13/03/2009, Abel MacAdam <abel.macadam@gmail.com> wrote:
>  >>
>  >>  Hi,
>  >>
>  >>  Can someone explain to me what happens when I open a page containing
>  >>  streaming media (a flash movie) in JMeter?
>  >>
>  >>  In a normal JMeter session I think you test something like (sort of) a
>  >>  (string of) request - response combination(s). So each time JMeter goes
>  >> to
>  >>  the library (the request), it fetches a book (the response). With
>  >> streaming
>  >>  media however, you send JMeter to the library, then asks the librarian
>  >> to be
>  >>  read from the book. And if I am going to test what load the streaming
>  >> media
>  >>  server can support, I'm sending many persons concurrently requesting to
>  >> be
>  >>  read from the book. And to me, fetching a book is not so though as
>  >> asking to
>  >>  be read from the book.
>  >
>  > JMeter will wait until the GET request has completed.
>  > I'm not sure if this behaves differently for streaming media.
>  >
>  >>  Now back to JMeter. What if I have a thread group with 1000 threads, to
>  >> be
>  >>  started in 10 seconds, looping forever.
>  >
>  > 1000 threads may be too many for one system.
>  >
>  >>  Back to my question: If I test a connection with a streaming media
>  >> server,
>  >>  what do I do? Fetch 1000 books every 10 seconds, or request 1000
>  >> librarians
>  >>  to read me a book every 10 seconds?
>  >
>  > Again, what are you trying to prove?
>  >
>  >>  Abel
>  >>
>  >> --
>  >>  View this message in context:
>  >> http://www.nabble.com/Follow-up-on-streaming-media-tp22496310p22496310.html
>  >>  Sent from the JMeter - User mailing list archive at Nabble.com.
>  >>
>  >>
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