[libvirt PATCH] ci: maximize cirrus CI ram/cpu allocation

[Andrea Bolognani]

On Tue, Jul 20, 2021 at 04:05:22PM +0100, Daniel P. Berrangé wrote:
> For macOS you always get the maximum configuration by default (12 CPUs,
> 24 GB RAM), but for FreeBSD you get 2 CPUs, 4 GBs by default. This
> change increases the allocation to 8 CPUs, 8 GBs for FreeBSD.
>
> ---
> In theory this could make builds quicker. In practice I've not been
> able to measure a difference due to large variance between runs.

Should we actually do this? The fact that FreeBSD builds take so much
time is painful, but if you haven't been able to measure significant
improvements from maximizing the number of CPUs assigned to the VM
then perhaps other factors such as slow disk speed are to blame
instead. In fact, looking at recent jobs it looks like they mostly
fall in line with Linux builds...

We certainly don't need 24 GiB of RAM to build libvirt, and grabbing
12 CPUs seems excessively greedy too. Can we try being nice citizens
instead, and allocate something like 4 CPUs and 2 GiB of RAM across
the board? I expect that the resulting build times would still be
close to what we're seeing for containerized Linux builds, and so the
overall pipeline completion time won't be negatively affected.

-- 
Andrea Bolognani / Red Hat / Virtualization