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From frogg6 <fdun...@yahoo.ie>
Subject Re: Increasing CPU during BOSH Test using JMETER
Date Fri, 04 Jun 2010 13:42:13 GMT

 I sent you on my results. I will have to run a trace to check if the
transactions/sec is decreasing over time. If so, what would this suggest?
How can it be fixed?


Deepak Brijnandan Goel wrote:
> 
> Hey
> 
> Namaskara~Nalama~Guten Tag
> 
> Could you please share the Jmeter test reports? Is the transactions/sec
> decreasing and response time increasing over time?
> 
> Deepak
>   --
> Keigu
> 
> Deepak
> +91-9765089593
> deicool@gmail.com
> 
> Skype: thumsupdeicool
> Google talk: deicool
> Blog: http://loveandfearless.wordpress.com
> Facebook: http://www.facebook.com/deicool
> 
> Check out my Work at:
> LinkedIn: http://in.linkedin.com/in/thumsupdeicool
> 
> "Contribute to the world, environment and more :
> http://www.gridrepublic.org
> "
> 
> 
> On Fri, Jun 4, 2010 at 6:29 PM, frogg6 <fdunne2@yahoo.ie> wrote:
> 
>>
>> Hi again,
>>
>> I don't think the problem lies with the presence sever as everything
>> looks
>> ok on that side. It is something to do with the jmeter toolboxes setup -
>> possiblr the heap size/new size? I am not storing up IM & presence
>> requests,
>> I simply fire them off to the presence server at a set rate in a infinite
>> loop once a user has logged in. I have logging enabled to tell me if a
>> request failed/timedout but everything looks ok. Right now I am running 2
>> instances of Jmeter [each of 1250 users] per toolbox. Would it be a
>> better
>> idea to run 4 instances over 4 boxes?
>>
>>
>> Deepak Brijnandan Goel wrote:
>> >
>> > Hey
>> >
>> > Namaskara~Nalama~Guten Tag
>> >
>> > This gets a bit tricky. How does your application server the request?
>> Does
>> > it keep the history of all the request by each user in the memory? What
>> is
>> > the caching mechanism? Are there any objects created by each request
>> which
>> > is not released? Can profiling of the application help in finding out
>> > memory
>> > leaks?
>> >
>> > Deepak
>> >   --
>> > Keigu
>> >
>> > Deepak
>> > +91-9765089593
>> > deicool@gmail.com
>> >
>> > Skype: thumsupdeicool
>> > Google talk: deicool
>> > Blog: http://loveandfearless.wordpress.com
>> > Facebook: http://www.facebook.com/deicool
>> >
>> > Check out my Work at:
>> > LinkedIn: http://in.linkedin.com/in/thumsupdeicool
>> >
>> > "Contribute to the world, environment and more :
>> > http://www.gridrepublic.org
>> > "
>> >
>> >
>> > On Fri, Jun 4, 2010 at 5:20 PM, frogg6 <fdunne2@yahoo.ie> wrote:
>> >
>> >>
>> >> Hey,
>> >>
>> >> Thanks for your quick reply! Once a user logs in, he sends a constant
>> >> rate
>> >> of presence and IM to the presense server in a infinite loop. In order
>> to
>> >> keep sending Presence and IM he will need to stay logged in for the
>> >> duration
>> >> of the test. So in answer to your question, I don't log out and users
>> and
>> >> their tasks never finish [until of course the test is ended manually].
>> >>
>> >> Is it better to use a higher heap size? Can this cause any negaitive
>> >> effects?
>> >>
>> >>
>> >>
>> >> Deepak Brijnandan Goel wrote:
>> >> >
>> >> > Hey
>> >> >
>> >> > Namaskara~Nalama~Guten Tag
>> >> >
>> >> > You might like to check for memory leaks in the application. Are
>> your
>> >> > users
>> >> > logging out after finishing their task?
>> >> >
>> >> > You might also like to increase your max heap size to 1 GB.
>> >> >
>> >> > Deepak
>> >> >   --
>> >> > Keigu
>> >> >
>> >> > Deepak
>> >> > +91-9765089593
>> >> > deicool@gmail.com
>> >> >
>> >> > Skype: thumsupdeicool
>> >> > Google talk: deicool
>> >> > Blog: http://loveandfearless.wordpress.com
>> >> > Facebook: http://www.facebook.com/deicool
>> >> >
>> >> > Check out my Work at:
>> >> > LinkedIn: http://in.linkedin.com/in/thumsupdeicool
>> >> >
>> >> > "Contribute to the world, environment and more :
>> >> > http://www.gridrepublic.org
>> >> > "
>> >> >
>> >> >
>> >> > On Fri, Jun 4, 2010 at 4:35 PM, frogg6 <fdunne2@yahoo.ie> wrote:
>> >> >
>> >> >>
>> >> >> I am using Jmeter to generate BOSH login, IM & Presence traffic
to
>> my
>> >> >> presence server. The test is for 5000 users and the traffic from
>> >> jmeter
>> >> >> runs
>> >> >> through a proxy server before going to the presence server. I have
>> >> setup
>> >> >> JMeter on 2 servers running 2 identical instances of my test
>> scripts
>> >> on
>> >> >> each
>> >> >> [2 x 2 x 1250 users/script = 5000 users]. The login period for
5000
>> >> uers
>> >> >> is
>> >> >> 20 mins after which time each user generates IM and Presence
>> requests
>> >> to
>> >> >> the
>> >> >> presence server. Everything is fine for the first 24 hours, I see
a
>> >> nice
>> >> >> steady CPU rate of around 60 % on my presence server. However after
>> 24
>> >> >> hours
>> >> >> the CPU gradually gets larger and larger until the presence
>> server's
>> >> CPU
>> >> >> reaches about 90% which is a test failure. I have checked my
>> presence
>> >> >> server
>> >> >> logs and everything looks fine so the problem must lie with the
>> >> >> toolboxes.
>> >> >> Any idea what might be causing the CPU to rise gradually after
24
>> >> hours?
>> >> >> Are
>> >> >> there any memory configurations etc that need to be set prior to
>> >> running
>> >> >> a
>> >> >> test? I am using a HeapSize of min: 256, max: 512 which for each
>> >> >> instance.
>> >> >> Do the NewSize values have to match these in terms of ratio? My
>> >> toolboxes
>> >> >> also contain 4 processors so I am tying each jmeter instance to
a
>> >> >> separate
>> >> >> processor which seems to fix the problem intermittently. Any help
>> >> would
>> >> >> be
>> >> >> much appreciated :-)
>> >> >> --
>> >> >> View this message in context:
>> >> >>
>> >>
>> http://old.nabble.com/Increasing-CPU-during-BOSH-Test-using-JMETER-tp28778525p28778525.html
>> >> >> Sent from the JMeter - User mailing list archive at Nabble.com.
>> >> >>
>> >> >>
>> >> >>
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>> >> >>
>> >> >>
>> >> >
>> >> >
>> >>
>> >> --
>> >> View this message in context:
>> >>
>> http://old.nabble.com/Increasing-CPU-during-BOSH-Test-using-JMETER-tp28778525p28778903.html
>> >> Sent from the JMeter - User mailing list archive at Nabble.com.
>> >>
>> >>
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>> >>
>> >>
>> >
>> >
>>
>> --
>> View this message in context:
>> http://old.nabble.com/Increasing-CPU-during-BOSH-Test-using-JMETER-tp28778525p28779651.html
>> Sent from the JMeter - User mailing list archive at Nabble.com.
>>
>>
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>>
>>
> 
> 

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