Hi Your reporting engine of choice will usually support this filter. For most non trivial load tests you have to analyze the data in either a DB or something like graphite etc - Almost all of which will trivially allow you to filter out time frames you dont want. For out of box listeners , yes you could write a simple program to filter values from JTL.
Ive not found JMeter *warmup* to be a significant issue to matter in most normal load tests (i.e. those that run for atleast an hour). The application itself is a different matter but thats very application specific.(And sometimes *warmup* hides issues) On Wed, May 17, 2017 at 11:48 PM, Isuru Perera <[email protected]> wrote: > Hi, > > We are using JMeter to run load tests on our Java servers and we want to > warm-up the application before taking measurements. > > For example, I want to have 10 minutes as the warm up time and 20 minutes > as the measurement time. > > I see two approaches to this. > > 1. Run JMeter for 30 minutes and exclude first 10 minutes data in the JTL > file and generate reports. > 2. Run JMeter for 10 minutes and run again for 20 minutes. Generate reports > from 20 minutes JTL file. > > We prefer number 1, as the Java server will be in a steady state when > taking measurements. However for approach 1, we need to find a way to > exclude first few minutes of data. We can do this with a simple program. > > Number 2 approach may not be useful as we are restarting the JMeter and it > will take some time get a steady throughput. > > I searched the web and I found following Stackoverflow question. > http://stackoverflow.com/questions/32237837/how-to- > exclude-warmup-time-from-jmeter-summary > > With GraphsGeneratorListener > <http://jmeter-plugins.org/wiki/GraphsGeneratorListener/>, it seems that I > can only generate reports. Is there any other way to just exclude first few > minutes in the JTL and then use the JTL to generate reports (for example, > JMeter Dashboard). Is that listener the only standard way to exclude > warm-up time in JMeter? > > Why don't I see anything mentioned about Java Warm-up time in official > docs? Since JMeter is based on Java, I expected some guidelines to load > test Java servers and how to exclude Java warm-up time. I think we should > also consider the warm-up time of JMeter. With approach 1, we can also make > sure that JMeter is also performing at its best when taking the > measurements. > > I really appreciate your feedback on this. > > Thank you. > > Best Regards, > -- > Isuru Perera > about.me/chrishantha >
