On 2 September 2011 13:07, Sherif Amer <sherif.moh.a...@gmail.com> wrote: > Hello, i re test the full test plan again and i got strange results for > the average and for the deviation > i have 4 pages and i made 10 request per page so the result is 40 request > when i show the result in table i got the Average = 142 and the deviation = > 93 > when i show the result in aggregate graph and i calculated the average and > the deviation the results were different from the results on the table !!!
The aggregate graph does not display the deviation, so I don't understand what you mean. > in the graph the Average = 140 and the deviation = 41. > any idea why the results are different even it is same number of requests > and the same test plan !!? Please provide the JTL results file - but do not send it to the list. Create a bugzilla issue and attach the JTL file to that. Make sure you explain what you see in the listeners and what you expected to see. > On Thu, Sep 1, 2011 at 4:11 PM, sebb <seb...@gmail.com> wrote: >> >> Note that OpenOffice.org Calc has STDEV and STDEVP functions that >> calculate the two different versions of std. dev.; I imagine Excel has >> similar functions. >> >> On 1 September 2011 16:06, Sherif Amer <sherif.moh.a...@gmail.com> wrote: >> > Thanks very much for the clarification, i will re create the full test >> > scenario and update you. >> > >> > On Thu, Sep 1, 2011 at 3:37 PM, sebb <seb...@gmail.com> wrote: >> > >> >> On 1 September 2011 15:17, Sherif Amer <sherif.moh.a...@gmail.com> >> >> wrote: >> >> > view result in *table* >> >> >> >> OK, I see - you mean the figure in red at the bottom of the screen. >> >> >> >> I have just written a test using the Java sampler so I can ensure that >> >> the correct times are created. >> >> >> >> I get the same average, but the deviation is calculated as 280, not 581 >> >> or >> >> 323. >> >> Same if I use the Summary Listener. >> >> >> >> The JMeter value agrees with the "population standard deviation", >> >> where the sum of square diffs is divided by the number of values (i.e. >> >> 4) before taking the square root. >> >> >> >> The value 323 results from dividing the sum of squares diffs by 3 (= >> >> 4-1) and then taking the square root. >> >> This is the "sample standard deviation". >> >> >> >> Both are valid interpretations of standard deviation. Perhaps JMeter >> >> should have used the latter, but it does not. >> >> >> >> I don't understand where the value 581 comes from. >> >> If you still have the raw sample data, perhaps you can create a >> >> Bugzilla issue and attach the JTL file with a screenshot of the Table >> >> Listener. >> >> >> >> > On Thu, Sep 1, 2011 at 3:13 PM, sebb <seb...@gmail.com> wrote: >> >> > >> >> >> On 1 September 2011 15:06, Sherif Amer <sherif.moh.a...@gmail.com> >> >> wrote: >> >> >> > Which sampler were you using? >> >> >> > *HTTP request* >> >> >> >> >> >> Sorry, I meant - which Listener were you using? >> >> >> >> >> >> > Which version of JMeter? >> >> >> > *2.4* >> >> >> > >> >> >> > On Thu, Sep 1, 2011 at 2:21 PM, sebb <seb...@gmail.com> wrote: >> >> >> > >> >> >> >> On 1 September 2011 13:56, Sherif Amer >> >> >> >> <sherif.moh.a...@gmail.com> >> >> >> wrote: >> >> >> >> > i made load test for 4 pages and the sample time was >> >> >> 426,1093,1127,921 >> >> >> >> and >> >> >> >> > when i showed the result in table >> >> >> >> > >> >> >> >> > The average was 892 which is ok >> >> >> >> >> >> >> >> Agreed. >> >> >> >> >> >> >> >> > And the deviation was 581 which is totally wrong, if you >> >> >> >> > calculate >> >> it >> >> >> >> > yourself the result will simply will be 323. >> >> >> >> >> >> >> >> Which sampler were you using? >> >> >> >> >> >> >> >> Which version of JMeter? >> >> >> >> >> >> >> >> > On Thu, Sep 1, 2011 at 1:48 PM, sebb <seb...@gmail.com> wrote: >> >> >> >> > >> >> >> >> >> On 1 September 2011 13:43, Sherif Amer >> >> >> >> >> <sherif.moh.a...@gmail.com >> >> > >> >> >> >> wrote: >> >> >> >> >> > hello !! >> >> >> >> >> > >> >> >> >> >> > i have question :) does Jmeter calculating the the deviation >> >> >> >> incorrectly >> >> >> >> >> in >> >> >> >> >> > the listener like the table and graphic shapes ? >> >> >> >> >> >> >> >> >> >> No. >> >> >> >> >> >> >> >> >> >> What makes you think the calculations are wrong? >> >> >> >> >> >> >> >> >> >> Please provide some evidence. >> >> >> >> >> >> >> >> >> >> > Regards, >> >> >> >> >> > >> >> >> >> >> > Sherif Amer >> >> >> >> >> > >> >> >> >> >> >> >> >> >> >> >> >> --------------------------------------------------------------------- >> >> >> >> >> To unsubscribe, e-mail: >> >> jmeter-user-unsubscr...@jakarta.apache.org >> >> >> >> >> For additional commands, e-mail: >> >> jmeter-user-h...@jakarta.apache.org >> >> >> >> >> >> >> >> >> >> >> >> >> >> > >> >> >> >> >> >> >> >> >> >> >> >> --------------------------------------------------------------------- >> >> >> >> To unsubscribe, e-mail: >> >> >> >> jmeter-user-unsubscr...@jakarta.apache.org >> >> >> >> For additional commands, e-mail: >> >> >> >> jmeter-user-h...@jakarta.apache.org >> >> >> >> >> >> >> >> >> >> >> > >> >> >> >> >> >> >> >> >> --------------------------------------------------------------------- >> >> >> To unsubscribe, e-mail: jmeter-user-unsubscr...@jakarta.apache.org >> >> >> For additional commands, e-mail: jmeter-user-h...@jakarta.apache.org >> >> >> >> >> >> >> >> > >> >> >> >> --------------------------------------------------------------------- >> >> To unsubscribe, e-mail: jmeter-user-unsubscr...@jakarta.apache.org >> >> For additional commands, e-mail: jmeter-user-h...@jakarta.apache.org >> >> >> >> >> > >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: jmeter-user-unsubscr...@jakarta.apache.org >> For additional commands, e-mail: jmeter-user-h...@jakarta.apache.org >> > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: jmeter-user-unsubscr...@jakarta.apache.org > For additional commands, e-mail: jmeter-user-h...@jakarta.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: jmeter-user-unsubscr...@jakarta.apache.org For additional commands, e-mail: jmeter-user-h...@jakarta.apache.org
