G'day Having worked a little with evolutionary algorithms I would think that writing the evolution part outside JMeter would be best.
The main reason is that, if you structure it correctly, then you have an evolution shell that you potentially apply to other projects. What you write will necessarily have a JMeter specific interface but if you keep that interface separate from the evaluation, characteristic randomisation, promotion etc parts then you should be able to reuse the evolutionary parts in another project with minimal rework. Ian Blavins Contract Performance Engineer Temenos -----Original Message----- From: Peter Laurens [mailto:[EMAIL PROTECTED] Sent: 11 September 2007 16:10 To: [email protected] Subject: Advice on Dynamically Driving JMeter Hi all, I am a new JMeter user and would appreciate some advice on how to go about achieving my slightly unusual goals. I want to drive the configuration of JMeter dynamically in conjunction with an evolutionary algorithm which attempts to find the most stressful configuration of JMeter (within certain constraints of course) for my server. My code will consist of the evolutionary algorithm which will decide upon and tune the JMeter configuration, including: - Number of Thread groups - Looping and User characteristics of those groups - Arrival times through addition and manipulation of timers - Deciding which resources to visit - etc. - pretty much most of the components JMeter exposes will be configurable by my evolutionary algorithm. This evolutionary algorithm needs feedback on how it is doing however, which JMeter provides for in the form of listeners. I am seeking advice on the implementation details of the above, for example, I could write the evolutionary algorithm part outside of JMeter entirely - just have it generate XML descriptions of a configuration, and read the output from the log for feedback. This will certainly provide the loop of EA_Generates_Configuration- >JMeter_Input->JMeter_Runs->JMeter_Output->Feedback_Tunes_EA... However, I am wondering whether the JMeter plugin architecture might be better/faster/more flexible for what I am trying to do. Or perhaps there is another approach (hybrid?) which you might suggest. Thanks for your time and advice, it's much appreciated and I'm sure will help keep me from flopping around too much at the beginning of this (non-commercial academic research) project. - Peter --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This email (and any attachments) contains confidential information, and is intended only for the named recipient. Distribution or copying of this email by anyone other than the named recipient is prohibited. If you are not the named or intended recipient, please notify TEMENOS or the sender immediately and permanently destroy this email (and any attachments) and all copies of it. No member of TEMENOS Group AG or any of its associated or affiliated companies is liable for any errors or omissions in the content or transmission of this email. Any opinions contained in this email are solely those of the author and, unless clearly indicated otherwise in writing, are not endorsed by any member of TEMENOS Group AG or any of its associated and affiliated companies. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
