Hi, You can check http://jmeter.apache.org/usermanual/component_reference.html#Constant_Throughput_Timer and http://jmeter.apache.org/usermanual/component_reference.html#Precise_Throughput_Timer
Check also open/closed model for load testing Or there is an explanation in the book https://leanpub.com/master-jmeter-from-load-test-to-devops About this book, I am one of the authors and I don't know if there are other books which explains it. Le mar. 8 janv. 2019 à 13:29, Marcio Prado <[email protected]> a écrit : > Sergio you have the JMeter documentation link that says what you > explained to me? > > In addition to your email I need the link to reference my work. > > Once again, thank you. > > Em 07-01-2019 16:24, Sergio Boso escreveu: > > Hi, > > > > yes it is normal, and this seems confusing at the beginning fro most. > > It depends very much on how you design the test, the number of virtual > > user etc. > > IF you do not use times, THEN each VU issues a request as soon as the > > previous one is finished. > > So, when response times increase, the throughput drops. > > For example, if a request takes 1 second, one VU will issue 60 > > request per minute. > > When a request takes 2 second, one VU will issue 30 request per > > minute. So you have to increase the number of VU to compensate. > > > > IN order to overcome this problem, the best option IMHO is to use a > > "Constant Throughput Timer". > > This allows you to make the VU wait and not to exceed a specified > > throughput. > > So in the example above, if you insert a time limiting the throughput > > to 30 op /s, you will not exceed this throughput. > > Even if the actual request will take 0.5, or 1 or 1.8 seconds, the > > throughput will not change. > > You can adjust the number of VU in order to obtain the desired load. > > Obviously, if the request takes more than 2 seconds, , the throughput > > will drop. > > > > HTH > > Sergio > > > > Il 07/01/2019 18:52, Marcio Prado ha scritto: > >> Good afternoon, > >> > >> I have a question that can be simple for most. > >> > >> I'm running some tests on a cloud computing with OpenStack. > >> > >> When network latency increases, the number of HTTP requests met > >> decreases. Is this normal behavior? > >> > >> I figured that the number of HTTP requests would remain the same as > >> when latency was low, since HTTP requests are generated regardless of > >> response time. > >> > >> Can anyone explain this behavior? > >> > >> Thank you! > >> > > -- > Marcio Prado > Analista de TI - Infraestrutura e Redes > Fone: (35) 9.9821-3561 > www.marcioprado.eti.br > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
