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Posted to user@jmeter.apache.org by Christiaan Lamprecht <ch...@googlemail.com> on 2007/10/11 23:05:27 UTC
Open threads limit
Is there a hard limit (i.e. not performance related) to the number of
concurrent threads JMeter can keep open? (e.g. maximum number of
file-descriptors per process allowed) In the example below a
thread/user only runs for 10 seconds. One new thread is created every
second and so there are always 10 threads open/active at any one time.
Is there a hard limit to the number of concurrent threads JMeter can
keep open like this?
Test Plan
Thread Group (users 100, ramp 100, count 100)
HTTP Request HTTPClient (SSL request - KeepAlive enabled)
Uniform Random Timer (Offset 100, dev 2)
PS: I'm running JMeter on Linux
Thanks again
Christiaan
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Re: Open threads limit
Posted by Christiaan Lamprecht <ch...@googlemail.com>.
> Not sure if KeepAlive works for SSL, but if it does, then you should
> ensure that the last request in the thread has the this disabled.
>
Did some KeepAlive tests and for the following Test Plan exactly 6 new
SSL sessions are created and each one is re-used for it's 20 requests.
Test Plan (Run each Thread group separately)
Thread Group (users 5, ramp 5, count 20)
HTTP Request HTTPClient (SSL request - KeepAlive enabled)
Thread Group (users 1, ramp 1, count 20)
HTTP Request HTTPClient (SSL request - KeepAlive enabled)
Uniform Random Timer (Offset 100, dev 10)
So it seems like KeepAlive works for SSL and I think it has the
desired effect that you suggested??
Thanks again
Christiaan
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Re: Open threads limit
Posted by sebb <se...@gmail.com>.
On 11/10/2007, Christiaan Lamprecht <ch...@googlemail.com> wrote:
> Is there a hard limit (i.e. not performance related) to the number of
> concurrent threads JMeter can keep open? (e.g. maximum number of
> file-descriptors per process allowed)
JMeter does not apply any limits; the OS may.
> In the example below a
> thread/user only runs for 10 seconds. One new thread is created every
> second and so there are always 10 threads open/active at any one time.
> Is there a hard limit to the number of concurrent threads JMeter can
> keep open like this?
>
> Test Plan
> Thread Group (users 100, ramp 100, count 100)
> HTTP Request HTTPClient (SSL request - KeepAlive enabled)
Not sure if KeepAlive works for SSL, but if it does, then you should
ensure that the last request in the thread has the this disabled.
> Uniform Random Timer (Offset 100, dev 2)
>
>
> PS: I'm running JMeter on Linux
>
> Thanks again
> Christiaan
>
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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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