Re: [osc] Very slow openstack commands in Stein Devstack running on VM

Clark Boylan cboylan at
Sun Jul 28 15:37:24 UTC 2019

On Sat, Jul 27, 2019, at 9:07 PM, Bernd Bausch wrote:


> My wild speculation is that the delay has something to do with 
> obtaining a random number, which can be a problem on virtual machines 
> due to their lack of entropy. My knowledge in this area is paper-thin, 
> though. And I wonder what happens to all the Devstacks used in CI?

All of the test VMs run haveged. We preinstall that on our images:

> Thus my questions: *Is the delay really caused by my running the cloud 
> on a VM? What can I do to improve this?*
> Thanks,
> Bernd

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