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Posted to user@jmeter.apache.org by drubix <an...@gmail.com> on 2009/05/07 09:19:45 UTC
Increasing Memory Usage
Hi,
I'm running a distributed test all on one system (to take advantage of IP
aliasing) with one thread per instance of JMeter. When I watch the
processes with top on my RH Linux box, the memory usage of each JMeter
instance seems to be rising dramatically over time. The same number of
threads running for 5 mins uses around 1.5GB of memory total by the end of
the run but when running for 30 mins ends up using closer to 4GB.
I'm using the HTTPClient for all calls so that should be avoiding the HTTPS
memory leak (only using HTTPS during the initial log on step anyway) and I
have no listeners running (I'm running in non-GUI mode using the -l switch).
I'm also using the default mode so that each sample is reported to the
master - the slave instances themselves shouldn't really be storing any more
information than just the cookies, should they?
Is there any other reason why the memory growth would be as it is?
Thanks,
Drew
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Re: Increasing Memory Usage
Posted by sebb <se...@gmail.com>.
On 08/05/2009, drubix <an...@gmail.com> wrote:
>
> I've got 3 HTTPClient Samplers which make the requests then I've got 2 test
> actions (for think times), a couple of simple controllers to signify
> grouping (I cut this small section out of a much larger test plan), a loop
> controller and a few config elements (User Defined Variables, HTTP Request
> Defaults and HTTP Cookie Manager). All of these are in a Thread Group.
>
> I can't figure out why so much memory would be used for just a single
> thread, jmeter overhead isn't that much, surely? Especially when running in
> non-GUI mode.
Neither can I - that sounds like a small test plan.
If there's nothing private in the plan, perhaps you could send me a
copy privately? (not to the list). Redact any passwords etc first.
Are you using any functions?
Forgot to ask earlier, which version of JMeter and Java are you using?
>
> sebb-2-2 wrote:
> >
> > On 08/05/2009, drubix <an...@gmail.com> wrote:
> >>
> >> Sorry for the double post, edits don't get sent to the mailing list.
> >>
> >> I've removed to the Response Assertion in case that was the cause of the
> >> large memory use (it's the only "non-standard" component I'm using) but
> >> that
> >> doesn't change the memory usage.
> >>
> >> I've also tried running the test on a Windows box (which is running
> >> Sun's
> >> JDK instead of OpenJDK) with approximately the same results.
> >>
> >> Is this memory usage really standard? If that's the case, with a more
> >> complex test plan and a higher number of users, I'd be looking at a
> >> server
> >> farm just to simulate a couple of dozen users.
> >
> > I've certainly run HTTP tests with lots of users and not had such a
> > problem.
> >
> > Which samplers are you using?
> >
> >> Thanks,
> >>
> >> Drew
> >>
> >>
> >>
> >> drubix wrote:
> >> >
> >> > Hi Sebb,
> >> >
> >> > I do actually, just ran it when I got into work with a single instance
> >> and
> >> > its memory usage started at about 22MB and seemed to be growing at
> >> about
> >> > 1MB every 2 seconds or so until a plateau at about 132MB after 15mins.
> >> > This test had a single thread and was launched using the command:
> >> >
> >> > jmeter -n -t SimpleTest.jmx -l out.jtl
> >> >
> >> > It consists of mostly HTTPClient Samplers, a loop controller and a
> >> > Response Assertion (but no listeners). Does this memory usage seem
> >> > unusually high?
> >> >
> >> > Thanks,
> >> >
> >> > Drew
> >> >
> >> >
> >> > sebb-2-2 wrote:
> >> >>
> >> >> On 07/05/2009, drubix <an...@gmail.com> wrote:
> >> >>>
> >> >>> Hi,
> >> >>>
> >> >>> I'm running a distributed test all on one system (to take advantage
> >> of
> >> >>> IP
> >> >>> aliasing) with one thread per instance of JMeter. When I watch the
> >> >>> processes with top on my RH Linux box, the memory usage of each
> >> JMeter
> >> >>> instance seems to be rising dramatically over time. The same
> >> number of
> >> >>> threads running for 5 mins uses around 1.5GB of memory total by the
> >> end
> >> >>> of
> >> >>> the run but when running for 30 mins ends up using closer to 4GB.
> >> >>>
> >> >>> I'm using the HTTPClient for all calls so that should be avoiding
> >> the
> >> >>> HTTPS
> >> >>> memory leak (only using HTTPS during the initial log on step
> >> anyway)
> >> >>> and I
> >> >>> have no listeners running (I'm running in non-GUI mode using the -l
> >> >>> switch).
> >> >>> I'm also using the default mode so that each sample is reported to
> >> the
> >> >>> master - the slave instances themselves shouldn't really be storing
> >> any
> >> >>> more
> >> >>> information than just the cookies, should they?
> >> >>>
> >> >>> Is there any other reason why the memory growth would be as it is?
> >> >>
> >> >> Sorry, no idea how memory usage behaves in client server mode.
> >> >>
> >> >> Do you see the same memory increase if you use independent non-GUI
> >> >> JMeter instances?
> >> >>
> >> >>> Thanks,
> >> >>>
> >> >>> Drew
> >> >>>
> >> >>> --
> >> >>> View this message in context:
> >> >>>
> >> http://www.nabble.com/Increasing-Memory-Usage-tp23421516p23421516.html
> >> >>> Sent from the JMeter - User mailing list archive at Nabble.com.
> >> >>>
> >> >>>
> >> >>>
> >> ---------------------------------------------------------------------
> >> >>> 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
> >> >>
> >> >>
> >> >>
> >> >
> >> >
> >>
> >> --
> >>
> >> View this message in context:
> >> http://www.nabble.com/Increasing-Memory-Usage-tp23421516p23438414.html
> >>
> >> Sent from the JMeter - User mailing list archive at Nabble.com.
> >>
> >>
> >> ---------------------------------------------------------------------
> >> 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
> >
> >
> >
>
> --
>
> View this message in context: http://www.nabble.com/Increasing-Memory-Usage-tp23421516p23439593.html
>
> Sent from the JMeter - User mailing list archive at Nabble.com.
>
>
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Re: Increasing Memory Usage
Posted by drubix <an...@gmail.com>.
I've got 3 HTTPClient Samplers which make the requests then I've got 2 test
actions (for think times), a couple of simple controllers to signify
grouping (I cut this small section out of a much larger test plan), a loop
controller and a few config elements (User Defined Variables, HTTP Request
Defaults and HTTP Cookie Manager). All of these are in a Thread Group.
I can't figure out why so much memory would be used for just a single
thread, jmeter overhead isn't that much, surely? Especially when running in
non-GUI mode.
sebb-2-2 wrote:
>
> On 08/05/2009, drubix <an...@gmail.com> wrote:
>>
>> Sorry for the double post, edits don't get sent to the mailing list.
>>
>> I've removed to the Response Assertion in case that was the cause of the
>> large memory use (it's the only "non-standard" component I'm using) but
>> that
>> doesn't change the memory usage.
>>
>> I've also tried running the test on a Windows box (which is running
>> Sun's
>> JDK instead of OpenJDK) with approximately the same results.
>>
>> Is this memory usage really standard? If that's the case, with a more
>> complex test plan and a higher number of users, I'd be looking at a
>> server
>> farm just to simulate a couple of dozen users.
>
> I've certainly run HTTP tests with lots of users and not had such a
> problem.
>
> Which samplers are you using?
>
>> Thanks,
>>
>> Drew
>>
>>
>>
>> drubix wrote:
>> >
>> > Hi Sebb,
>> >
>> > I do actually, just ran it when I got into work with a single instance
>> and
>> > its memory usage started at about 22MB and seemed to be growing at
>> about
>> > 1MB every 2 seconds or so until a plateau at about 132MB after 15mins.
>> > This test had a single thread and was launched using the command:
>> >
>> > jmeter -n -t SimpleTest.jmx -l out.jtl
>> >
>> > It consists of mostly HTTPClient Samplers, a loop controller and a
>> > Response Assertion (but no listeners). Does this memory usage seem
>> > unusually high?
>> >
>> > Thanks,
>> >
>> > Drew
>> >
>> >
>> > sebb-2-2 wrote:
>> >>
>> >> On 07/05/2009, drubix <an...@gmail.com> wrote:
>> >>>
>> >>> Hi,
>> >>>
>> >>> I'm running a distributed test all on one system (to take advantage
>> of
>> >>> IP
>> >>> aliasing) with one thread per instance of JMeter. When I watch the
>> >>> processes with top on my RH Linux box, the memory usage of each
>> JMeter
>> >>> instance seems to be rising dramatically over time. The same
>> number of
>> >>> threads running for 5 mins uses around 1.5GB of memory total by the
>> end
>> >>> of
>> >>> the run but when running for 30 mins ends up using closer to 4GB.
>> >>>
>> >>> I'm using the HTTPClient for all calls so that should be avoiding
>> the
>> >>> HTTPS
>> >>> memory leak (only using HTTPS during the initial log on step
>> anyway)
>> >>> and I
>> >>> have no listeners running (I'm running in non-GUI mode using the -l
>> >>> switch).
>> >>> I'm also using the default mode so that each sample is reported to
>> the
>> >>> master - the slave instances themselves shouldn't really be storing
>> any
>> >>> more
>> >>> information than just the cookies, should they?
>> >>>
>> >>> Is there any other reason why the memory growth would be as it is?
>> >>
>> >> Sorry, no idea how memory usage behaves in client server mode.
>> >>
>> >> Do you see the same memory increase if you use independent non-GUI
>> >> JMeter instances?
>> >>
>> >>> Thanks,
>> >>>
>> >>> Drew
>> >>>
>> >>> --
>> >>> View this message in context:
>> >>>
>> http://www.nabble.com/Increasing-Memory-Usage-tp23421516p23421516.html
>> >>> Sent from the JMeter - User mailing list archive at Nabble.com.
>> >>>
>> >>>
>> >>>
>> ---------------------------------------------------------------------
>> >>> 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
>> >>
>> >>
>> >>
>> >
>> >
>>
>> --
>>
>> View this message in context:
>> http://www.nabble.com/Increasing-Memory-Usage-tp23421516p23438414.html
>>
>> Sent from the JMeter - User mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> 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
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>
>
>
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Re: Increasing Memory Usage
Posted by sebb <se...@gmail.com>.
On 08/05/2009, drubix <an...@gmail.com> wrote:
>
> Sorry for the double post, edits don't get sent to the mailing list.
>
> I've removed to the Response Assertion in case that was the cause of the
> large memory use (it's the only "non-standard" component I'm using) but that
> doesn't change the memory usage.
>
> I've also tried running the test on a Windows box (which is running Sun's
> JDK instead of OpenJDK) with approximately the same results.
>
> Is this memory usage really standard? If that's the case, with a more
> complex test plan and a higher number of users, I'd be looking at a server
> farm just to simulate a couple of dozen users.
I've certainly run HTTP tests with lots of users and not had such a problem.
Which samplers are you using?
> Thanks,
>
> Drew
>
>
>
> drubix wrote:
> >
> > Hi Sebb,
> >
> > I do actually, just ran it when I got into work with a single instance and
> > its memory usage started at about 22MB and seemed to be growing at about
> > 1MB every 2 seconds or so until a plateau at about 132MB after 15mins.
> > This test had a single thread and was launched using the command:
> >
> > jmeter -n -t SimpleTest.jmx -l out.jtl
> >
> > It consists of mostly HTTPClient Samplers, a loop controller and a
> > Response Assertion (but no listeners). Does this memory usage seem
> > unusually high?
> >
> > Thanks,
> >
> > Drew
> >
> >
> > sebb-2-2 wrote:
> >>
> >> On 07/05/2009, drubix <an...@gmail.com> wrote:
> >>>
> >>> Hi,
> >>>
> >>> I'm running a distributed test all on one system (to take advantage of
> >>> IP
> >>> aliasing) with one thread per instance of JMeter. When I watch the
> >>> processes with top on my RH Linux box, the memory usage of each JMeter
> >>> instance seems to be rising dramatically over time. The same number of
> >>> threads running for 5 mins uses around 1.5GB of memory total by the end
> >>> of
> >>> the run but when running for 30 mins ends up using closer to 4GB.
> >>>
> >>> I'm using the HTTPClient for all calls so that should be avoiding the
> >>> HTTPS
> >>> memory leak (only using HTTPS during the initial log on step anyway)
> >>> and I
> >>> have no listeners running (I'm running in non-GUI mode using the -l
> >>> switch).
> >>> I'm also using the default mode so that each sample is reported to the
> >>> master - the slave instances themselves shouldn't really be storing any
> >>> more
> >>> information than just the cookies, should they?
> >>>
> >>> Is there any other reason why the memory growth would be as it is?
> >>
> >> Sorry, no idea how memory usage behaves in client server mode.
> >>
> >> Do you see the same memory increase if you use independent non-GUI
> >> JMeter instances?
> >>
> >>> Thanks,
> >>>
> >>> Drew
> >>>
> >>> --
> >>> View this message in context:
> >>> http://www.nabble.com/Increasing-Memory-Usage-tp23421516p23421516.html
> >>> Sent from the JMeter - User mailing list archive at Nabble.com.
> >>>
> >>>
> >>> ---------------------------------------------------------------------
> >>> 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
> >>
> >>
> >>
> >
> >
>
> --
>
> View this message in context: http://www.nabble.com/Increasing-Memory-Usage-tp23421516p23438414.html
>
> Sent from the JMeter - User mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
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>
>
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Re: Increasing Memory Usage
Posted by drubix <an...@gmail.com>.
Sorry for the double post, edits don't get sent to the mailing list.
I've removed to the Response Assertion in case that was the cause of the
large memory use (it's the only "non-standard" component I'm using) but that
doesn't change the memory usage.
I've also tried running the test on a Windows box (which is running Sun's
JDK instead of OpenJDK) with approximately the same results.
Is this memory usage really standard? If that's the case, with a more
complex test plan and a higher number of users, I'd be looking at a server
farm just to simulate a couple of dozen users.
Thanks,
Drew
drubix wrote:
>
> Hi Sebb,
>
> I do actually, just ran it when I got into work with a single instance and
> its memory usage started at about 22MB and seemed to be growing at about
> 1MB every 2 seconds or so until a plateau at about 132MB after 15mins.
> This test had a single thread and was launched using the command:
>
> jmeter -n -t SimpleTest.jmx -l out.jtl
>
> It consists of mostly HTTPClient Samplers, a loop controller and a
> Response Assertion (but no listeners). Does this memory usage seem
> unusually high?
>
> Thanks,
>
> Drew
>
>
> sebb-2-2 wrote:
>>
>> On 07/05/2009, drubix <an...@gmail.com> wrote:
>>>
>>> Hi,
>>>
>>> I'm running a distributed test all on one system (to take advantage of
>>> IP
>>> aliasing) with one thread per instance of JMeter. When I watch the
>>> processes with top on my RH Linux box, the memory usage of each JMeter
>>> instance seems to be rising dramatically over time. The same number of
>>> threads running for 5 mins uses around 1.5GB of memory total by the end
>>> of
>>> the run but when running for 30 mins ends up using closer to 4GB.
>>>
>>> I'm using the HTTPClient for all calls so that should be avoiding the
>>> HTTPS
>>> memory leak (only using HTTPS during the initial log on step anyway)
>>> and I
>>> have no listeners running (I'm running in non-GUI mode using the -l
>>> switch).
>>> I'm also using the default mode so that each sample is reported to the
>>> master - the slave instances themselves shouldn't really be storing any
>>> more
>>> information than just the cookies, should they?
>>>
>>> Is there any other reason why the memory growth would be as it is?
>>
>> Sorry, no idea how memory usage behaves in client server mode.
>>
>> Do you see the same memory increase if you use independent non-GUI
>> JMeter instances?
>>
>>> Thanks,
>>>
>>> Drew
>>>
>>> --
>>> View this message in context:
>>> http://www.nabble.com/Increasing-Memory-Usage-tp23421516p23421516.html
>>> Sent from the JMeter - User mailing list archive at Nabble.com.
>>>
>>>
>>> ---------------------------------------------------------------------
>>> 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: Increasing Memory Usage
Posted by drubix <an...@gmail.com>.
Hi Sebb,
I do actually, just ran it when I got into work with a single instance and
its memory usage started at about 22MB and seemed to be growing at about 1MB
every 2 seconds or so until a plateau at about 132MB after 15mins. This
test had a single thread and was launched using the command:
jmeter -n -t SimpleTest.jmx -l out.jtl
It consists of mostly HTTPClient Samplers, a loop controller and a Response
Assertion (but no listeners). Does this memory usage seem unusually high?
Thanks,
Drew
sebb-2-2 wrote:
>
> On 07/05/2009, drubix <an...@gmail.com> wrote:
>>
>> Hi,
>>
>> I'm running a distributed test all on one system (to take advantage of
>> IP
>> aliasing) with one thread per instance of JMeter. When I watch the
>> processes with top on my RH Linux box, the memory usage of each JMeter
>> instance seems to be rising dramatically over time. The same number of
>> threads running for 5 mins uses around 1.5GB of memory total by the end
>> of
>> the run but when running for 30 mins ends up using closer to 4GB.
>>
>> I'm using the HTTPClient for all calls so that should be avoiding the
>> HTTPS
>> memory leak (only using HTTPS during the initial log on step anyway) and
>> I
>> have no listeners running (I'm running in non-GUI mode using the -l
>> switch).
>> I'm also using the default mode so that each sample is reported to the
>> master - the slave instances themselves shouldn't really be storing any
>> more
>> information than just the cookies, should they?
>>
>> Is there any other reason why the memory growth would be as it is?
>
> Sorry, no idea how memory usage behaves in client server mode.
>
> Do you see the same memory increase if you use independent non-GUI
> JMeter instances?
>
>> Thanks,
>>
>> Drew
>>
>> --
>> View this message in context:
>> http://www.nabble.com/Increasing-Memory-Usage-tp23421516p23421516.html
>> Sent from the JMeter - User mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> 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: Increasing Memory Usage
Posted by sebb <se...@gmail.com>.
On 07/05/2009, drubix <an...@gmail.com> wrote:
>
> Hi,
>
> I'm running a distributed test all on one system (to take advantage of IP
> aliasing) with one thread per instance of JMeter. When I watch the
> processes with top on my RH Linux box, the memory usage of each JMeter
> instance seems to be rising dramatically over time. The same number of
> threads running for 5 mins uses around 1.5GB of memory total by the end of
> the run but when running for 30 mins ends up using closer to 4GB.
>
> I'm using the HTTPClient for all calls so that should be avoiding the HTTPS
> memory leak (only using HTTPS during the initial log on step anyway) and I
> have no listeners running (I'm running in non-GUI mode using the -l switch).
> I'm also using the default mode so that each sample is reported to the
> master - the slave instances themselves shouldn't really be storing any more
> information than just the cookies, should they?
>
> Is there any other reason why the memory growth would be as it is?
Sorry, no idea how memory usage behaves in client server mode.
Do you see the same memory increase if you use independent non-GUI
JMeter instances?
> Thanks,
>
> Drew
>
> --
> View this message in context: http://www.nabble.com/Increasing-Memory-Usage-tp23421516p23421516.html
> Sent from the JMeter - User mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
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>
>
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