Hey Namaskara~Nalama~Guten Tag
As you increase the load, both the throughput and the response time increase. There is a knee beyond which throughput would remain constant and the response time would then increase exponentially. Looks like you haven't reached that knee yet at 3.1 req/sec throughput, so the throughput will increase to 5 req/sec (knee throughput). There are lot of other operations which this test is doing like network time, client rendering time, server socket connections that might also add to the increasing response time in addition to the time taken by your application. Also as the response time has increased by 10 times, the throughput has only increased less than 2 times (not much as compared to response time). You can draw the knee curve for both throughput against load, response time over load if you can measure more test. Something like: Request/sec Response Time Throughput 700 3000 ms 3/sec 5000 40000ms 4/sec 9600 114300ms 5/sec (Almost the knee i think) 15000 3337777ms 5.2/sec 30000 7778888ms 5.3/sec If you put your results (the above are only a sample) in an excel sheet, and get the curve chart, you would be able to see the response time curve (exponential) and throughput curve(plateau over a hill) Deepak -- Keigu Deepak +91-9765089593 deic...@gmail.com Skype: thumsupdeicool Google talk: deicool Blog: http://loveandfearless.wordpress.com Facebook: http://www.facebook.com/deicool Check out my Work at: LinkedIn: http://in.linkedin.com/in/thumsupdeicool "Contribute to the world, environment and more : http://www.gridrepublic.org " On Tue, Jul 27, 2010 at 7:47 PM, Jörg Godau <j.go...@schuetze-berlin.de>wrote: > Hi All, > > we have a fairly simple test that logs in to our application. > > We've setup a Gaussian Random Timer and are monitoring the results in an > Aggregate report. > > My question is about the throughput - if we reduce the delays in the Timer, > the time taken to log in to the application increases (which makes sense as > there is more load on the server). > > Why is the throughput also increasing? If each request is taking much > longer (ca. 10 times as long) when we increase the load - shouldn't the > throughput be lower? > > Some numbers to illustrate: > Timer ave 30 sec / deviation 15 sec => Average request 700ms, max > 2760ms, throughput 3.1/sec > Timer ave 10 sec / deviation 3 sec => Average request 9610ms, max > 114300ms, throughput 5.0/sec > > Can someone please explain how this is possible? > > > Mit freundlichen Grüßen > Jörg Godau > > SCHÜTZE Consulting Informationssysteme GmbH Argentinische Allee 22b > 14163 Berlin > Tel.: 030/ 802 49 44 > Fax: 030/ 8090 39 95 > www.schuetze-berlin.de > > Geschäftsführer: Klaus-Dieter Schütze > Registergericht: Amtsgericht Charlottenburg > Registernummer: HRB 73618 > Umsatzsteuer-Identifikationsnummer gemäß § 27a Umsatzsteuergesetz: DE > 813181239 > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: jmeter-user-unsubscr...@jakarta.apache.org > For additional commands, e-mail: jmeter-user-h...@jakarta.apache.org > >
