It looks[1] like github actions only run on amd64 hosts, so if you use a platform matrix like in this example[2] I am fairly certain it is running under qemu ju

It looks[1] like github actions only run on amd64 hosts, so if you use a platform matrix like in this example[2] I am fairly certain it is running under qemu just based on the fact that is takes roughly 10 times longer to run. I am aware of Blaze[3] has arm64 runners. If you are willing to pay for it, you can also setup a runner that uses AWS Graviton EC2 instances[4], we do that at my workplace for our multi architecture builds. 1: https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners/about-github-hosted-runners#cloud-hosts-used-by-github-hosted-runners https://docs.github.com/en/actions/using-github-hosted-runne... 2: https://docs.docker.com/build/ci/github-actions/multi-platform/ https://docs.docker.com/build/ci/github-actions/multi-platfo... 3: https://www.runblaze.dev/ https://www.runblaze.dev/ 4: https://aws.amazon.com/ec2/graviton/ https://aws.amazon.com/ec2/graviton/