You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@jmeter.apache.org by Enric Jaen <en...@yahoo.es> on 2012/11/27 12:43:55 UTC
tools to measure average concurrent users?
Hello all,
In order to create a concurrent scenario with JMeter as real as possible, I'd like to know previously what is the average concurrency access to my website (based on historical data)
I'd like to reach to a number such as for example, the average users accessing the website simultaneously is 100
(which will be the number of JMeter threads)
I guess it must be based in the apache logs. I know about AwStats or 123LogAnalizer, but I don't think they provide such information.
How do you obtain the concurrent number of users accessing a website? Are you aware of any tool ?
Regards,
/Enric Jaen
Re: tools to measure average concurrent users?
Posted by Shmuel Krakower <sh...@gmail.com>.
I am not aware of a tool which does it.
I use Splunk to graph me the apache access logs and get throughputs. I
think they have a free SaaS service you can use...
On Nov 27, 2012 11:37 PM, "Anthony Johnson" <an...@gmail.com> wrote:
> Another idea If you want to calculate this going forward, you could
> simply use the %T for a custom access log in apache.
>
> http://httpd.apache.org/docs/2.2/mod/mod_log_config.html#formats
>
> %T gives you the total time it took to service a request. From there
> it should be trivial to parse that access_log and determine
> concurrency at any point for any URL.
>
> On Tue, Nov 27, 2012 at 3:50 PM, Enric Jaen <en...@yahoo.es> wrote:
> > I appreciate your answers,
> >
> > Flavio, for me a problem with the 'netstat' approach is that doesn't
> distinguish URLs. We have a JBoss running several apps, so it's necessary
> to filter by app.
> >
> > Shmuel, I agree with respect you said about tomcat sessions and action
> throughtput , but I ask for a tool before looking logs or metrics by
> myself.
> >
> > Best regards,
> > /Enric
> >
> >
> > ________________________________
> > De: Flavio Cysne <fl...@gmail.com>
> > Para: JMeter Users List <us...@jmeter.apache.org>; Enric Jaen <
> enricjaen@yahoo.es>
> > Enviado: Martes 27 de noviembre de 2012 13:06
> > Asunto: Re: tools to measure average concurrent users?
> >
> >
> > This answer, at StackExchange, may help you:
> http://webmasters.stackexchange.com/questions/24687/get-the-number-of-concurrent-users-in-apache
> >
> >
> >
> > 2012/11/27 Enric Jaen <en...@yahoo.es>
> >
> > Hello all,
> >>
> >>In order to create a concurrent scenario with JMeter as real as
> possible, I'd like to know previously what is the average concurrency
> access to my website (based on historical data)
> >>
> >>I'd like to reach to a number such as for example, the average users
> accessing the website simultaneously is 100
> >>(which will be the number of JMeter threads)
> >>
> >>
> >>I guess it must be based in the apache logs. I know about AwStats or
> 123LogAnalizer, but I don't think they provide such information.
> >>
> >>How do you obtain the concurrent number of users accessing a website?
> Are you aware of any tool ?
> >>
> >>Regards,
> >>/Enric Jaen
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@jmeter.apache.org
> For additional commands, e-mail: user-help@jmeter.apache.org
>
>
Re: tools to measure average concurrent users?
Posted by Anthony Johnson <an...@gmail.com>.
Another idea If you want to calculate this going forward, you could
simply use the %T for a custom access log in apache.
http://httpd.apache.org/docs/2.2/mod/mod_log_config.html#formats
%T gives you the total time it took to service a request. From there
it should be trivial to parse that access_log and determine
concurrency at any point for any URL.
On Tue, Nov 27, 2012 at 3:50 PM, Enric Jaen <en...@yahoo.es> wrote:
> I appreciate your answers,
>
> Flavio, for me a problem with the 'netstat' approach is that doesn't distinguish URLs. We have a JBoss running several apps, so it's necessary to filter by app.
>
> Shmuel, I agree with respect you said about tomcat sessions and action throughtput , but I ask for a tool before looking logs or metrics by myself.
>
> Best regards,
> /Enric
>
>
> ________________________________
> De: Flavio Cysne <fl...@gmail.com>
> Para: JMeter Users List <us...@jmeter.apache.org>; Enric Jaen <en...@yahoo.es>
> Enviado: Martes 27 de noviembre de 2012 13:06
> Asunto: Re: tools to measure average concurrent users?
>
>
> This answer, at StackExchange, may help you: http://webmasters.stackexchange.com/questions/24687/get-the-number-of-concurrent-users-in-apache
>
>
>
> 2012/11/27 Enric Jaen <en...@yahoo.es>
>
> Hello all,
>>
>>In order to create a concurrent scenario with JMeter as real as possible, I'd like to know previously what is the average concurrency access to my website (based on historical data)
>>
>>I'd like to reach to a number such as for example, the average users accessing the website simultaneously is 100
>>(which will be the number of JMeter threads)
>>
>>
>>I guess it must be based in the apache logs. I know about AwStats or 123LogAnalizer, but I don't think they provide such information.
>>
>>How do you obtain the concurrent number of users accessing a website? Are you aware of any tool ?
>>
>>Regards,
>>/Enric Jaen
---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@jmeter.apache.org
For additional commands, e-mail: user-help@jmeter.apache.org
Re: tools to measure average concurrent users?
Posted by Enric Jaen <en...@yahoo.es>.
I appreciate your answers,
Flavio, for me a problem with the 'netstat' approach is that doesn't distinguish URLs. We have a JBoss running several apps, so it's necessary to filter by app.
Shmuel, I agree with respect you said about tomcat sessions and action throughtput , but I ask for a tool before looking logs or metrics by myself.
Best regards,
/Enric
________________________________
De: Flavio Cysne <fl...@gmail.com>
Para: JMeter Users List <us...@jmeter.apache.org>; Enric Jaen <en...@yahoo.es>
Enviado: Martes 27 de noviembre de 2012 13:06
Asunto: Re: tools to measure average concurrent users?
This answer, at StackExchange, may help you: http://webmasters.stackexchange.com/questions/24687/get-the-number-of-concurrent-users-in-apache
2012/11/27 Enric Jaen <en...@yahoo.es>
Hello all,
>
>In order to create a concurrent scenario with JMeter as real as possible, I'd like to know previously what is the average concurrency access to my website (based on historical data)
>
>I'd like to reach to a number such as for example, the average users accessing the website simultaneously is 100
>(which will be the number of JMeter threads)
>
>
>I guess it must be based in the apache logs. I know about AwStats or 123LogAnalizer, but I don't think they provide such information.
>
>How do you obtain the concurrent number of users accessing a website? Are you aware of any tool ?
>
>Regards,
>/Enric Jaen
Re: tools to measure average concurrent users?
Posted by Shmuel Krakower <sh...@gmail.com>.
Just for the record, another option might be to look for the number of
active sessions on your application servers (i.e in tomcat, look for
session jmx metrics).
It has a downside that if you have long session timeout - it will show you
with high number of sessions, so you should understand sessions.
Another thing to keep in mind is that if you have a currently live system,
you would like to define your load test otherwise than by number of active
users.
The other option is to configure the load test to get to a certain amount
of throughput for different actions, this will result with a more close to
real life load test scenario.
i.e. if in the apache logs you can see the amount of homepage views per
minute - you should define your load test to reproduce this behavior, and
so for any other action.
This is how I tend to create my load tests, when possible, I define a
target of throughput per each simulated action and build my load test in a
way which allow me to do so.
Number of active sessions / users / jmeter threads - is also important (for
concurrency), but it is not the only factor to consider.
Shmuel Krakower.
Beatsoo.org - re-use your jmeter scripts for application performance
monitoring from worldwide locations for free.
On Tue, Nov 27, 2012 at 2:06 PM, Flavio Cysne <fl...@gmail.com> wrote:
> This answer, at StackExchange, may help you:
>
> http://webmasters.stackexchange.com/questions/24687/get-the-number-of-concurrent-users-in-apache
>
>
> 2012/11/27 Enric Jaen <en...@yahoo.es>
>
> > Hello all,
> >
> > In order to create a concurrent scenario with JMeter as real as possible,
> > I'd like to know previously what is the average concurrency access to
> my
> > website (based on historical data)
> >
> > I'd like to reach to a number such as for example, the average users
> > accessing the website simultaneously is 100
> > (which will be the number of JMeter threads)
> >
> >
> > I guess it must be based in the apache logs. I know about AwStats or
> > 123LogAnalizer, but I don't think they provide such information.
> >
> > How do you obtain the concurrent number of users accessing a website?
> Are
> > you aware of any tool ?
> >
> > Regards,
> > /Enric Jaen
>
Re: tools to measure average concurrent users?
Posted by Flavio Cysne <fl...@gmail.com>.
This answer, at StackExchange, may help you:
http://webmasters.stackexchange.com/questions/24687/get-the-number-of-concurrent-users-in-apache
2012/11/27 Enric Jaen <en...@yahoo.es>
> Hello all,
>
> In order to create a concurrent scenario with JMeter as real as possible,
> I'd like to know previously what is the average concurrency access to my
> website (based on historical data)
>
> I'd like to reach to a number such as for example, the average users
> accessing the website simultaneously is 100
> (which will be the number of JMeter threads)
>
>
> I guess it must be based in the apache logs. I know about AwStats or
> 123LogAnalizer, but I don't think they provide such information.
>
> How do you obtain the concurrent number of users accessing a website? Are
> you aware of any tool ?
>
> Regards,
> /Enric Jaen