The ideal distributed system

[David Troyer]

Hey Everybody,

I need to put together a solid selenium distributed system. I've read over the Grid2 wiki page, but could use a little more practical guidance, so please humor me.

1. This is for 20 engineers who run a suite of around 300 tests maybe twice a day on average.
2. Must support Internet Explorer 9 and latest version of Chrome

How many nodes should I shoot for? How many browser instances can I stably run on each node? Is it possible or practical to have more than one node per environment (vm)?

What else should I be considering or thinking about?

Thanks for your help!

David

P.S. As an aside, I'm using ruby and capybara.

[Oscar Rieken]

On Sat, Feb 15, 2014 at 6:02 PM, David Troyer <dmtr...@gmail.com> wrote:

Hey Everybody,

I need to put together a solid selenium distributed system. I've read over the Grid2 wiki page, but could use a little more practical guidance, so please humor me.

1. This is for 20 engineers who run a suite of around 300 tests maybe twice a day on average. 

1. Must support Internet Explorer 9 and latest version of Chrome

How many nodes should I shoot for?

depends on how your tests run.

 

How many browser instances can I stably run on each node?

depends on the hardware of each node

 

Is it possible or practical to have more than one node per environment (vm)?

 again depends on the resources available on the machine. but I would opt for just more browsers on one node (currently my setup has 10 of each ff, chrome and ie on each node, but my vms are beefy and I have a lot of them) 

What else should I be considering or thinking about?

how your tests are written. 

how long does it take for your tests to run on average each? all?

How the site is setup. Like popups and things opening in new tabs/browsers is always a tricky thing to manage.

Can the environment you are going to be running all of these tests in parallel against handle it?

 

Thanks for your help! 

David

P.S. As an aside, I'm using ruby and capybara.

I don't like capybara but thats just me. 

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[SantoshSarma]

Hi Oscar.Rieken ,

I'm just curious to know below things.

 

Can I know how beefy your vms are ?

Are facing any slowness/ hanging problem while running 10 FF, one Chrome and one IE instances in parallel ?

Regards,
SantoshSarma

[David Lai]

For me I don't run more than 1 test per VM.

But I find I hit a lot of stability issues when I go below 2 cores (@ 2Ghz), or below 4GB or RAM.

[santoshsarma jayanthi]

Thats Cool David :)

I would like to know optimal machine configuration to run automation in parallel (Say 10 FF in parallel). 

Does anybody running like that ? If so, Whats your machine configuration? Are you facing any issues with that?

On Wed, Feb 19, 2014 at 3:36 AM, David Lai <sbs...@gmail.com> wrote:

For me I don't run more than 1 test per VM.

But I find I hit a lot of stability issues when I go below 2 cores (@ 2Ghz), or below 4GB or RAM.

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Regards,
-SantoshSarma
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[Oscar Rieken]

4 core 8gb of ram on the nodes (off the top of my head I think windows and linux are the same)

8 core 32gb of ram on the grid hub

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