On 10/01/2010, Deepak Shetty <[email protected]> wrote: > 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.
Yes, it is calculated for both HTTP Samplers. > 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). Timer granularity may be a lot higher than 1ms. However, if the test plan is being run using Java 1.5 or later, the code will automatically use System.nanoTime() for elapsed time measurement, which should have much lower granularity. > 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] > > > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
