HP LoadRunner and Performance Center Blog - All Comments

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uberVU - social comments — Wed, 28 Oct 2009 13:38:51 GMT

This post was mentioned on Twitter by mtomlins: blog: Understanding the language of hosted load testing: I recently got an email from a colleague which wa.. http://bit.ly/KEqPF

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re: What are the Goals of Performance Testing?

Runner53 — Fri, 09 Oct 2009 17:34:47 GMT

I just want to print this Blog entry out on parchment paper and frame it on the wall of my cubicle!

Here at Deere & Company I feel like the lone evangelist for the Performance Testing philosophy you are describing. I am constantly trying to convince Management and others that our job as Application Performance Testers is not just conducting some "load tests" on an application 2 days before it gets deployed into Production. When I try to incorporate the use of monitoring during testing I have to fight for the necessary "rights" to even access the Servers on which the application runs. And I am pretty much not allowed to even think about monitoring the Databases (DB2, SQL Server, and Oracle), the Middleware (MQ), or the Network. Worse yet, trying to get the various experts in the aforementioned areas to work cooperatively with our team during testing is an ongoing struggle.

As a result of the above "fights", I am struggling to demonstrate value to the testing that we do conduct. In the past week alone, here are excerpts from two "analysis" reports from my colleagues: "We tested the application with 100 VUsers, 150 VUsers and 200 VUsers. It ran OK with 100, but crashed with the other loads." and "The application ran well for 45 minutes, but then it experienced weirdness". I'm serious! On top of this, I see constant reports that are nothing more than the LoadRunner Analysis Report in Word Doc form --- without any real explanation for what a "VUser" really is, what Hits per Second or Throughput even mean (and should we care), and whether or not the application will run at the projected loads.

The reason I am even on the HP site right now is I was looking to see if I could find more current information on several things I personally need for a project on which I am working: 1) A better understanding of how to monitor WebSphere Applications running on a virtualized Apache/Linux environment. 2) A way to monitor DB2 running on AIX. 3) A way to monitor AIX in general, with consideration for the concept of entitilement. 4) A way to diagnose Application "crashes" in WebSphere (including how to read Heapdumps and Javacores). Unfortunately or fortunately, I stumbled on this Blog, and have to give up my search again for today. Oh well, I have been trying to get the HP Diagnostics software to run in our environment since at least February, so what's a few more days? I can always open another HP Service Request, learn Spanish so I can decipher the recommendations I am offered, and give up again a month from now.

I would like to ask if you can find someone who can draft a "Performance Testing Specialist's Oath" that addresses all of the points you have made. That way I can at least give the new testers on our team something to shoot for.

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re: questions about think times

Maran — Thu, 17 Sep 2009 09:19:15 GMT

Hi Mahes,

Once you open the LoadRunner test results under analysis tool, go to “File – Set global Filter” or press “Control + B” which opens “Global Filter” window.

Scroll down to the bottom and you may fine a combo box "Include think time". Deselect this if you want to ignore the think time from the test results.

Cheers.

Maran

re: How To: Understand and calculate Virtual User "footprint"

Ganesh Raja — Tue, 15 Sep 2009 20:07:37 GMT

Hi Mark,

Great Info Thanks.

Would the number of VUSERS on a Load Generator cause Response Time variations. Also will the load on the VUSER have an Impact on the Response time ?

I am sorry if these questions are naive.

Cheers

- G

re: Video: Running LoadRunner Virtualized

LB — Sun, 06 Sep 2009 06:50:20 GMT

The audio is very weak - not only in this video but in your others too.

re: Video: LoadRunner Walk-through

mark.tomlinson — Thu, 03 Sep 2009 17:04:28 GMT

Hi dongwoo shin,

Study is good - but it should be also that you have a specific objective to the effort of your studies. Don't you agree? :)

Good luck,

-mt

re: Video: LoadRunner Walk-through

Tola Sadiku — Fri, 28 Aug 2009 20:13:52 GMT

I like this video. its very useful for starters.

re: HP Software Universe Online

Ali — Mon, 24 Aug 2009 00:43:58 GMT

Thank you for the info.

re: Hey EMC – how’s it feel to run a 100,000 user benchmark?

GM Saravanan — Wed, 19 Aug 2009 15:03:41 GMT

Hi,

Good to see complex scenario getting success !!!

From the benchmark documents, I could see two controllers used. Did they run in parallel ? I dont see any parallel support / cluster support from Loadrunner. Just a curiosity !

re: LoadRunner Walk-through Video

dongwoo shin — Wed, 19 Aug 2009 02:55:25 GMT

i want to study only

re: Let's talk about: the concurrency factor

mark.tomlinson — Wed, 12 Aug 2009 19:46:36 GMT

re: Lisa's question...if you purchased 2000 virtual user licenses and ran them just 3-times faster than the real user sessions (according to the video example)...that would simulate 6000 users on the site.

Keep in mind that Think Time is used within each session - in each action of the script, so that the user actions are simulated accurately, then add some buffer time after the session as the Iteration Pacing setting for the virtual user.

re: Everything you wanted to find about LoadRunner, but didn't know the URL

Christine Vladic — Mon, 03 Aug 2009 21:27:32 GMT

This are very helpful. I often times get frustrated with HP support site self-serv knowledge search. These are good links to practical gurus and use of LR.