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Re: Performance issues with /gnu/store in virtual machines

From: Ricardo Wurmus
Subject: Re: Performance issues with /gnu/store in virtual machines
Date: Sun, 20 Aug 2017 11:02:16 +0200
User-agent: mu4e 0.9.18; emacs 25.2.1

Hi Chris,

> So I was trying out using VMs created through Guix for more things,
> particularly as they can be run as part of derivations, e.g. the system
> tests for Guix.
> However, I'm seeing anything that does I/O performing very poorly
> compared with the host system.

(I’m not using VMs as KVM doesn’t work on my laptop.)

Have you tried specifying “virtio” drivers for the virtual disks?  I
don’t think they are the default and I’m hopeful that with virtio
drivers I/O performance will be comparable.


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