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From: "Stott, Charlie" <CStott@tnsi.com>
To: JMeter Users List <user@jmeter.apache.org>
Date: Fri, 2 Nov 2012 11:21:21 +1000
Subject: RE: setup & teardown thread group concurrency
Thread-Topic: setup & teardown thread group concurrency
Thread-Index: Ac24JJ+//wOj38P7SPe1+2BZgKT0QAAYf8Hg
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Hi,

Thanks for the reply.

> > I am finding that the setup thread appears to run concurrently with all=
 the other thread groups.

> What makes you think that?

I have a pre-processor which stores a value in a property in the setup thre=
ad group.

Samples that are processed in setup thread group respect the value of the p=
roperty, but samples processed in other thread groups have not got it set y=
et, although it often becomes set during the processing of the group.

I understand scope of properties is global.  I also notice that some setup =
samples process after samples from non-setup thread group.

I find the behaviour is different depending if I set the consecutive settin=
g in the test plan.

Are properties asynchronous?  That might also explain the behaviour?   I th=
ink I need to understand scope and function much better with regard to prop=
erties and variables.

I understand that variables are local to thread group, but is this also tru=
e in the case of setup thread (I assumed it was due to concurrency).  On co=
mpletion of the setup thread group, will all variables changes be discarded=
?  I think I might have assumed that other thread groups threads were actua=
lly started after completion of setup threads, but perhaps they are all sta=
rted early, then delayed until setup is complete?

I will try to provide a simple test plan snippet to check my expectations w=
ith the group.

> > Is this proper behaviour?

> No.

Thanks particularly for confirming this.  It means I don't mind persevering=
 to work out what I am doing wrong.

Cheers,
Charlie

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