Running three jobs at the same time

[sravan]

Hi All,

I know jenkins allow to run two jobs/ threads at the same time. Is there  way I can increase it to run three jobs at the same time?

I am trying to investigate this and could not find any solution on this. Any help is appreciated .

Thanks,

Sravan

[Jan Monterrubio]

How are you running two jobs? is that 2 executors on the same machine? 

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[sravan]

yes as two executors on the same machine

[Jan Monterrubio]

Would increase the executors to 3 not do the trick? I might be misunderstanding the problem. 

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[sravan]

My problem is I want to run 3 jobs at the same time. currently jenkins allow you to run 2 only 

[Jan Monterrubio]

That sounds like a configuration problem to me, as have some agents that have 6cpus and 6 executors and some that have 3 executors. I think we can run about 40 jobs in parallel with our setup. 

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[Baptiste Mathus]

However tempting, I would recommend not using ever more than 1-executor agents.

Especially for heavy tasks related to development.

In $previousJob we've burned hours of engineering time to understand what was causing random failures when the wrong jobs would run together at the wrong time.

TL;DR it's mostly a matter of machine load, and it's exponentially easier to have more agents, isolated with a resource limitation layer like docker if you run them on the same host.

And if you're using the cloud, just set up two smaller VMs or so instead of a single big one.

Cheers

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