Re: Running Multiple Scripts Concurrently Using Grinder

Hi Christine,

An approach that you could consider is to have your scripts read this info from a resource file to allow for easy configuration changes.  You could have the desired virtual user court or threads defined in an external CSV file.

You could augment the example of the parallel.py and expand on it a bit.

An example would be read in the file, create a hash map or python list - each element being a thread instruction (for lack of a better term).

In your CSV file, you could have 1 column be the script name followed by the 2nd column representing the virtual user account.

While you read in the file if you identify vu=5; that simply means you need to load up five grinder threads dynamically for the script name 'sample.py'.

To run this, you could assign grinder.threads equals to 1 so that the thread will spawn up the parallel.py.   Then, depending on your CSV file your parallel.py would automatically load up (see Api docs for appropriate method call) the the required number of threads.

I prefer this approach to the statically define thread IDs as it resembles LR's concept of a scenario.

This approach allows you to define the number of threads and individual scripts in a CSV file which is easy to edit.

Let me know, I could proved some simple code samples to help you get a working sample.

HTH,

Ouray Viney

> On Jun 23, 2015, at 5:30 PM, Gary Mulder <[email protected]> wrote:
> 
> Hi Christine,
> 
> The filename of the script is usually defined in the Grinder configuration file.
> 
> Conceptually, all Grinder threads execute the same test program, unlike in LoadRunner where you assign threads to different test scripts. A simple Jython solution to this is for each thread to essentially use conditional logic to execute different code paths as a function of the thread id.
> 
> Regards, 
> Gary
> 
>> On 23 Jun 2015 10:15 pm, "Christine Economy" <[email protected]> wrote:
>> Hi Adil,
>> 
>> Thanks for your amazingly quick response - I know now that the Grinder network
>> does respond! (not all tech networks are that good).
>> 
>> I'm using an environment set-up by someone who is not longer at the company.
>> I've searched for a parallel.py script in al directories, and nothing is/was found.
>> Possibly, multi-script runs have not been done in this area..
>> 
>> Do you have one that has worked for you?  How does it relate tho the master
>> script?  I'm hoping you're right when you say it's pretty easy.  It IS pretty easy
>> with Loadrunner and JMeter.
>> 
>> I really appreciate your time and help!
>> 
>> Thanks and regards,
>> Chris
>> 
>> 
>> 
>> 
>>> On Tue, Jun 23, 2015 at 1:59 PM, Adil qureshi <[email protected]> wrote:
>>> Inside examples go to parallel.py. .I am using the same. .,its quite easy to do that in grinder. ..
>>> 
>>>> On 23 Jun 2015 21:55, "Christine Economy" <[email protected]> wrote:
>>>> Hi Grinder World Members,
>>>> 
>>>> I'm a performance engineer who has used Loadrunner and QTP
>>>> for several years, and have used JMeter a few times as well, but
>>>> just started using Grinder.  I've run some large tests, but have not had
>>>> to run multiple scripts concurrently until now, and I'm hoping someone out
>>>> will be kind enough to offer some help/guidance.  I have to have this working
>>>> for a super high visibility project in the next one and a half.
>>>> 
>>>> I'm basically looking for an equivalent to Loadrunner's multiple scripts in a
>>>> scenario, or HTTP requests with JMeter.
>>>> 
>>>> I did some homework/Googling before reaching out to you -
>>>> and found this helpful link:
>>>> 
>>>> http://osdir.com/ml/java.grinder.user/2004-05/msg00014.html
>>>> 
>>>> Apologies if I'm being dense on this, but I'm not seeing the step by step
>>>> thought process; for example, where/how is the divisor (4 in most cases in the doc
>>>> at the link) is being arrived at.  I think just a bit of input from someone who has done
>>>> this will make it clear.
>>>> 
>>>> Also, is anything additional needed along with the master script?
>>>> 
>>>> Thanks very much for your time and help.
>>>> 
>>>> Best regards,
>>>> Chris
>>>> 
>>>> 
>>>> 
>>>> 
>>>> ------------------------------------------------------------------------------
>>>> Monitor 25 network devices or servers for free with OpManager!
>>>> OpManager is web-based network management software that monitors
>>>> network devices and physical & virtual servers, alerts via email & sms
>>>> for fault. Monitor 25 devices for free with no restriction. Download now
>>>> http://ad.doubleclick.net/ddm/clk/292181274;119417398;o
>>>> _______________________________________________
>>>> grinder-use mailing list
>>>> [email protected]
>>>> https://lists.sourceforge.net/lists/listinfo/grinder-use
>>> 
>>> ------------------------------------------------------------------------------
>>> Monitor 25 network devices or servers for free with OpManager!
>>> OpManager is web-based network management software that monitors
>>> network devices and physical & virtual servers, alerts via email & sms
>>> for fault. Monitor 25 devices for free with no restriction. Download now
>>> http://ad.doubleclick.net/ddm/clk/292181274;119417398;o
>>> _______________________________________________
>>> grinder-use mailing list
>>> [email protected]
>>> https://lists.sourceforge.net/lists/listinfo/grinder-use
>> 
>> 
>> ------------------------------------------------------------------------------
>> Monitor 25 network devices or servers for free with OpManager!
>> OpManager is web-based network management software that monitors
>> network devices and physical & virtual servers, alerts via email & sms
>> for fault. Monitor 25 devices for free with no restriction. Download now
>> http://ad.doubleclick.net/ddm/clk/292181274;119417398;o
>> _______________________________________________
>> grinder-use mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/grinder-use
> ------------------------------------------------------------------------------
> Monitor 25 network devices or servers for free with OpManager!
> OpManager is web-based network management software that monitors 
> network devices and physical & virtual servers, alerts via email & sms 
> for fault. Monitor 25 devices for free with no restriction. Download now
> http://ad.doubleclick.net/ddm/clk/292181274;119417398;o
> _______________________________________________
> grinder-use mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/grinder-use

------------------------------------------------------------------------------
Monitor 25 network devices or servers for free with OpManager!
OpManager is web-based network management software that monitors 
network devices and physical & virtual servers, alerts via email & sms 
for fault. Monitor 25 devices for free with no restriction. Download now
http://ad.doubleclick.net/ddm/clk/292181274;119417398;o

_______________________________________________
grinder-use mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/grinder-use