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Posted to user@jmeter.apache.org by Jatin <da...@gmail.com> on 2010/01/09 11:59:12 UTC
JMeter Latency Showing incorrect ?
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
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Re: JMeter Latency Showing incorrect ?
Posted by Deepak Shetty <sh...@gmail.com>.
Hi
cool , thanks.
regards
deepak
On Sun, Jan 10, 2010 at 4:31 PM, sebb <se...@gmail.com> wrote:
> On 11/01/2010, sebb <se...@gmail.com> wrote:
> > On 10/01/2010, Deepak Shetty <sh...@gmail.com> wrote:
> >
> > > hi
> > > so what do you think is the cause behind latency being reported as
> 0(is it
> > > the granularity)?
> >
> >
> > Yes
> >
> >
> > > a quick glance through the code showed that latencyEnd is
> > > not called if the content length isn't 0 and some property
> > > httpsampler.obey_contentlength is set to true , but i dont think
> this
> > > property is set by default
> >
> >
> > Oops!
> >
> > No, that is not the default - I've run a test that shows non-zero
> > latency for 200 and 304 status returns.
> >
>
> The obey_contentlength property only applies if the content-length is zero.
> But it's a good idea to call latencyEnd for this case (and an error
> case) - which is now done.
>
> > >
> > > regards
> > >
> > > deepak
> > >
> > >
> > > On Sun, Jan 10, 2010 at 3:51 AM, sebb <se...@gmail.com> wrote:
> > >
> > > > On 10/01/2010, Deepak Shetty <sh...@gmail.com> 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 <da...@gmail.com>
> 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 <da...@gmail.com>
> 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 <
> daveyjatin@gmail.com>
> > > > 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:
> > > > jmeter-user-unsubscribe@jakarta.apache.org
> > > > > >>>>> For additional commands, e-mail:
> > > > jmeter-user-help@jakarta.apache.org
> > > > > >>>>>
> > > > > >>>>>
> > > > > >>>>>
> > > > > >>>>>
> > > > > >>>>>
> > > > > >>>>>
> > > > > >>>>
> > > > > >>>>
> > > > > >>>>
> > > > > >>>
> > > >
> ---------------------------------------------------------------------
> > > > > >>> To unsubscribe, e-mail:
> jmeter-user-unsubscribe@jakarta.apache.org
> > > > > >>> For additional commands, e-mail:
> > > > jmeter-user-help@jakarta.apache.org
> > > > > >>>
> > > > > >>>
> > > > > >>>
> > > > > >>>
> > > > > >>
> > > > > >>
> > > > > >>
> > > > > >
> > > > > >
> > > > > >
> ---------------------------------------------------------------------
> > > > > > To unsubscribe, e-mail:
> jmeter-user-unsubscribe@jakarta.apache.org
> > > > > > For additional commands, e-mail:
> jmeter-user-help@jakarta.apache.org
> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> ---------------------------------------------------------------------
> > > > To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> > > > For additional commands, e-mail:
> jmeter-user-help@jakarta.apache.org
> > > >
> > > >
> > >
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>
>
Re: JMeter Latency Showing incorrect ?
Posted by sebb <se...@gmail.com>.
On 11/01/2010, sebb <se...@gmail.com> wrote:
> On 10/01/2010, Deepak Shetty <sh...@gmail.com> wrote:
>
> > hi
> > so what do you think is the cause behind latency being reported as 0(is it
> > the granularity)?
>
>
> Yes
>
>
> > a quick glance through the code showed that latencyEnd is
> > not called if the content length isn't 0 and some property
> > httpsampler.obey_contentlength is set to true , but i dont think this
> > property is set by default
>
>
> Oops!
>
> No, that is not the default - I've run a test that shows non-zero
> latency for 200 and 304 status returns.
>
The obey_contentlength property only applies if the content-length is zero.
But it's a good idea to call latencyEnd for this case (and an error
case) - which is now done.
> >
> > regards
> >
> > deepak
> >
> >
> > On Sun, Jan 10, 2010 at 3:51 AM, sebb <se...@gmail.com> wrote:
> >
> > > On 10/01/2010, Deepak Shetty <sh...@gmail.com> 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 <da...@gmail.com> 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 <da...@gmail.com> 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 <da...@gmail.com>
> > > 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:
> > > jmeter-user-unsubscribe@jakarta.apache.org
> > > > >>>>> For additional commands, e-mail:
> > > jmeter-user-help@jakarta.apache.org
> > > > >>>>>
> > > > >>>>>
> > > > >>>>>
> > > > >>>>>
> > > > >>>>>
> > > > >>>>>
> > > > >>>>
> > > > >>>>
> > > > >>>>
> > > > >>>
> > > ---------------------------------------------------------------------
> > > > >>> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> > > > >>> For additional commands, e-mail:
> > > jmeter-user-help@jakarta.apache.org
> > > > >>>
> > > > >>>
> > > > >>>
> > > > >>>
> > > > >>
> > > > >>
> > > > >>
> > > > >
> > > > >
> > > > > ---------------------------------------------------------------------
> > > > > To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> > > > > For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
> > > > >
> > > > >
> > > >
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> > > For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
> > >
> > >
> >
>
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Re: JMeter Latency Showing incorrect ?
Posted by sebb <se...@gmail.com>.
On 10/01/2010, Deepak Shetty <sh...@gmail.com> wrote:
> hi
> so what do you think is the cause behind latency being reported as 0(is it
> the granularity)?
Yes
> a quick glance through the code showed that latencyEnd is
> not called if the content length isn't 0 and some property
> httpsampler.obey_contentlength is set to true , but i dont think this
> property is set by default
Oops!
No, that is not the default - I've run a test that shows non-zero
latency for 200 and 304 status returns.
>
> regards
>
> deepak
>
>
> On Sun, Jan 10, 2010 at 3:51 AM, sebb <se...@gmail.com> wrote:
>
> > On 10/01/2010, Deepak Shetty <sh...@gmail.com> 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 <da...@gmail.com> 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 <da...@gmail.com> 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 <da...@gmail.com>
> > 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:
> > jmeter-user-unsubscribe@jakarta.apache.org
> > > >>>>> For additional commands, e-mail:
> > jmeter-user-help@jakarta.apache.org
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>>
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>
> > ---------------------------------------------------------------------
> > > >>> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> > > >>> For additional commands, e-mail:
> > jmeter-user-help@jakarta.apache.org
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>
> > > >>
> > > >>
> > > >
> > > >
> > > > ---------------------------------------------------------------------
> > > > To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> > > > For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
> > > >
> > > >
> > >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> > For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
> >
> >
>
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Re: JMeter Latency Showing incorrect ?
Posted by Deepak Shetty <sh...@gmail.com>.
hi
so what do you think is the cause behind latency being reported as 0(is it
the granularity)? a quick glance through the code showed that latencyEnd is
not called if the content length isn't 0 and some property
httpsampler.obey_contentlength is set to true , but i dont think this
property is set by default
regards
deepak
On Sun, Jan 10, 2010 at 3:51 AM, sebb <se...@gmail.com> wrote:
> On 10/01/2010, Deepak Shetty <sh...@gmail.com> 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 <da...@gmail.com> 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 <da...@gmail.com> 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 <da...@gmail.com>
> 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:
> jmeter-user-unsubscribe@jakarta.apache.org
> > >>>>> For additional commands, e-mail:
> jmeter-user-help@jakarta.apache.org
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>
> > >>>>
> > >>>>
> > >>>
> ---------------------------------------------------------------------
> > >>> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> > >>> For additional commands, e-mail:
> jmeter-user-help@jakarta.apache.org
> > >>>
> > >>>
> > >>>
> > >>>
> > >>
> > >>
> > >>
> > >
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> > > For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
> > >
> > >
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>
>
Re: JMeter Latency Showing incorrect ?
Posted by sebb <se...@gmail.com>.
On 10/01/2010, Deepak Shetty <sh...@gmail.com> 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 <da...@gmail.com> 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 <da...@gmail.com> 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 <da...@gmail.com> 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: jmeter-user-unsubscribe@jakarta.apache.org
> >>>>> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>
> >>>>
> >>>>
> >>> ---------------------------------------------------------------------
> >>> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> >>> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >>
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> > For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
> >
> >
>
---------------------------------------------------------------------
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For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
Re: JMeter Latency Showing incorrect ?
Posted by Deepak Shetty <sh...@gmail.com>.
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 <da...@gmail.com> 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 <da...@gmail.com> 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 <da...@gmail.com> 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: jmeter-user-unsubscribe@jakarta.apache.org
>>>>> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
>>> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>>>
>>>
>>>
>>>
>>
>>
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>
>
Re: JMeter Latency Showing incorrect ?
Posted by Jatin <da...@gmail.com>.
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 <da...@gmail.com> 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 <da...@gmail.com> 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: jmeter-user-unsubscribe@jakarta.apache.org
>>>> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
>> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>>
>>
>>
>
>
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Re: JMeter Latency Showing incorrect ?
Posted by Deepak Shetty <sh...@gmail.com>.
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 <da...@gmail.com> 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 <da...@gmail.com> 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
>>>
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>>> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
>>> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>>>
>>>
>>>
>>>
>>
>>
>>
>
>
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>
>
Re: JMeter Latency Showing incorrect ?
Posted by Jatin <da...@gmail.com>.
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 <da...@gmail.com> 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: jmeter-user-unsubscribe@jakarta.apache.org
>> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>>
>>
>>
>
>
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Re: JMeter Latency Showing incorrect ?
Posted by Deepak Shetty <sh...@gmail.com>.
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 <da...@gmail.com> 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: jmeter-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>
>
Re: JMeter Latency Showing incorrect ?
Posted by Deepak Goel <de...@gmail.com>.
The latency value could be correct
On Sat, Jan 9, 2010 at 4:29 PM, Jatin <da...@gmail.com> 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: jmeter-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>
>
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--
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Deepak
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