i got the values from the graph and i calculated it and i got the population standard deviation, it is totally different from the values which the table shows, can you try it please ?
On Fri, Sep 2, 2011 at 3:51 PM, sebb <[email protected]> wrote: > On 2 September 2011 15:08, Sherif Amer <[email protected]> wrote: > > thanks very much for the response, regarding "The aggregate graph does > not > > display the deviation" i calculated it manually :) and it is not the same > > one shown in the table. > > So what has the aggregate graph got to do with it then? > > And did you use the appropriate calculation, i.e. population standard > deviation? > > > regarding the bugzilla and the JTL can elaborate more details as it is my > > first time here :) > > Bugzilla: http://jakarta.apache.org/jmeter/issues.html > > JTL is the sample output file; may be in CSV or XML format. > > Without the sample data it's impossible to provide further help. > > > On Fri, Sep 2, 2011 at 1:53 PM, sebb <[email protected]> wrote: > > > >> On 2 September 2011 13:07, Sherif Amer <[email protected]> > 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 <[email protected]> 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 <[email protected]> > >> 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 <[email protected]> wrote: > >> >> > > >> >> >> On 1 September 2011 15:17, Sherif Amer <[email protected] > > > >> >> >> 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 <[email protected]> wrote: > >> >> >> > > >> >> >> >> On 1 September 2011 15:06, Sherif Amer < > [email protected] > >> > > >> >> >> 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 <[email protected]> > wrote: > >> >> >> >> > > >> >> >> >> >> On 1 September 2011 13:56, Sherif Amer > >> >> >> >> >> <[email protected]> > >> >> >> >> 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 <[email protected]> > >> wrote: > >> >> >> >> >> > > >> >> >> >> >> >> On 1 September 2011 13:43, Sherif Amer > >> >> >> >> >> >> <[email protected] > >> >> >> > > >> >> >> >> >> 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: > >> >> >> [email protected] > >> >> >> >> >> >> For additional commands, e-mail: > >> >> >> [email protected] > >> >> >> >> >> >> > >> >> >> >> >> >> > >> >> >> >> >> > > >> >> >> >> >> > >> >> >> >> >> > >> >> >> >> >> > >> --------------------------------------------------------------------- > >> >> >> >> >> To unsubscribe, e-mail: > >> >> >> >> >> [email protected] > >> >> >> >> >> For additional commands, e-mail: > >> >> >> >> >> [email protected] > >> >> >> >> >> > >> >> >> >> >> > >> >> >> >> > > >> >> >> >> > >> >> >> >> > >> >> >> >> > >> --------------------------------------------------------------------- > >> >> >> >> To unsubscribe, e-mail: > >> [email protected] > >> >> >> >> For additional commands, e-mail: > >> [email protected] > >> >> >> >> > >> >> >> >> > >> >> >> > > >> >> >> > >> >> >> > --------------------------------------------------------------------- > >> >> >> To unsubscribe, e-mail: > [email protected] > >> >> >> For additional commands, e-mail: > [email protected] > >> >> >> > >> >> >> > >> >> > > >> >> > >> >> --------------------------------------------------------------------- > >> >> To unsubscribe, e-mail: [email protected] > >> >> For additional commands, e-mail: [email protected] > >> >> > >> > > >> > > >> > > >> > --------------------------------------------------------------------- > >> > To unsubscribe, e-mail: [email protected] > >> > For additional commands, e-mail: [email protected] > >> > > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [email protected] > >> For additional commands, e-mail: [email protected] > >> > >> > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
