On úterý 22. listopadu 2022 12:23:54 CET David Duncan wrote:
> > On pondělí 21. listopadu 2022 3:16:39 CET Neal Gompa wrote:
> > 
> > Not sure what is in Koji, so just some facts about the Copr arm builders...
> > 
> > Copr uses 'a1.2xlarge' machines:
> > https://aws.amazon.com/ec2/instance-types/a1/
> > 
> 
> We do have access to the later generations: The [CMR]6g and then the latest
> Graviton 3 instances in the C7g family. 
> 
> Our (AWS’s) engineering team highly discourages the use of the a1 instance
> types at this point. Can we move that to standard T4g.2xl or better yet update
> that to a C6g.2xl? 

I tested c6g and c7g today.

They seem to work, but subscription-manager seems to fail (some
entitlement issue).  When we sort this out, it would be an easy switch,
thank you for the tip!

> It sounds like we need to update the infrastructure definitions to include the
> later versions. These next-generation instance types will definitely increase
> the efficiency of the workload. 

They indeed are much faster.

> > Copr uses mock's tmpfs feature, with cca 140GB SWAP volume on a gp2 disk:
> > https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/general-purpose.html
> > 
> 
> Some of the justification should come directly from the ec2 optimizer in
> the account. We should probably take a look at the profile information
> there to determine what will be the best fit cost/performance wise. 

Never used ec2 optimizer.  Another very good tip, thanks.

Pavel


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