I guess someone familiar with the code base would have to reply , I guess latency may not be calculated if the status code is not in 2xx. Alternately its possible that the latency is an extremely small value (< 1ms which is the granularity for older JVMs) since the server is simply returning you a status which is why you see zero(means less than 1 ms).
regards deepak On Sat, Jan 9, 2010 at 10:37 PM, Jatin <[email protected]> wrote: > You are correct deepak , I had redirects in the first sampler. Observerd > the HTTP redirection status code in the view results listener. After > removing that sampler i had latency being shown correctly. > > Again , why is the latency shown 0 for redirects as even the redirects > traverse across the internet and it takes time for Jmeter to get them > process them. > > > Thanks > Jatin > > Deepak Shetty wrote: > >> Hi >> I tested against www.google.com and I dont see a zero latency. did you >> verify with View Results Tree that you are indeed getting Google's home >> page >> (no redirects/errors or anything)? are you seeing this behavior for all >> external sites? >> >> The elapsed time = latency +( time from 1st byte to last byte received). >> Any combination of value is possible , with elapsed time always greater >> than >> latency. >> >> regards >> deepak >> >> >> On Sat, Jan 9, 2010 at 10:11 PM, Jatin <[email protected]> wrote: >> >> >> >>> I was testing from my home laptop. My internet speed is 256 kbps. I >>> recorded the home page of google.com and was replaying it which had 9 >>> samplers to access all the contents of the home page. I am confused on >>> one >>> point , the Elapsed time is mostly above 400ms for the first sampler >>> where >>> as the latency for this sampler is always 0 no matter how many times i >>> loop. >>> Both Elapsed time and latency have one thing in common which is that both >>> take into account the delay happening because of the response getting >>> from >>> across the internet, then how come latency is 0 all the time while the >>> elapsed time is more than 400ms for most of the time. >>> >>> Thanks >>> Jatin >>> >>> >>> Deepak Shetty wrote: >>> >>> >>> >>>> if you are testing this out within your intranet , its possible you >>>> could >>>> see extremely low or zero values. >>>> regards >>>> deepak >>>> >>>> On Sat, Jan 9, 2010 at 2:59 AM, Jatin <[email protected]> wrote: >>>> >>>> >>>> >>>> >>>> >>>>> Hi all >>>>> >>>>> I had a recorded script that will access the home page of a site. The >>>>> listener that i was using was a graph results listener. I wanted to >>>>> save >>>>> the >>>>> results in a csv file for only two variables namely: latency and >>>>> Elapsed >>>>> time. So in the configure dialog only selected these two parameters and >>>>> obtained a csv file. >>>>> >>>>> My test plan organization was comprised of 9 HTTP samplers in one >>>>> thread >>>>> group with all the samplers put into a loop controller looping forever. >>>>> For >>>>> all the tests that were looping in the controller i noticed that for >>>>> the >>>>> first sampler the latency was always 0 even though the elapsed time was >>>>> around 400ms but not less than that. Is the latency value correct since >>>>> for >>>>> both these parameters the response has to be fetched from the server >>>>> and >>>>> there could be delay in receiving the response. Please let me know if i >>>>> am >>>>> missing something here. >>>>> >>>>> Some test run samples are as below : >>>>> >>>>> 459,0 >>>>> 140,137 >>>>> 63,40 >>>>> 179,134 >>>>> 137,137 >>>>> 120,120 >>>>> 53,39 >>>>> 40,40 >>>>> 113,113 >>>>> 275,0 >>>>> 157,154 >>>>> 62,40 >>>>> 540,144 >>>>> 149,148 >>>>> 33,33 >>>>> 53,38 >>>>> 37,37 >>>>> 113,113 >>>>> 470,0 >>>>> 159,155 >>>>> 62,39 >>>>> 178,133 >>>>> 176,176 >>>>> 120,120 >>>>> 54,39 >>>>> 38,37 >>>>> 113,113 >>>>> >>>>> >>>>> Thanks >>>>> Jatin >>>>> >>>>> --------------------------------------------------------------------- >>>>> 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] > >
