There are several factors that could be at play. If you aren't running docker natively on Linux that will have some overhead (virtualization, proxying, sync files in bind mount to vm, etc). If you forgot to add a volume somewhere and there's some IO-heavy operations being done inside the container there will be some overhead. If you're on a RHEL-based distro and didn't configure devicemapper to use a proper thin pool there will be some overhead. Et cetera.
If you get things right though there shouldn't be any measurable performance difference with running containers. Also worth noting that orchestrators such as Kubernetes have their own overhead.
I'd also note that rootless is going to have a greater overhead since there's a couple of extra things which need to run in userspace (e.g., slirp4netns). It isn't something specific to podman though.
yeah nothing is perfect in our world and I guess I'll have to evaluate the cost/benefits of using or not using containers. hopefully it's many months or years in the future for me 😜
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There are several factors that could be at play. If you aren't running docker natively on Linux that will have some overhead (virtualization, proxying, sync files in bind mount to vm, etc). If you forgot to add a volume somewhere and there's some IO-heavy operations being done inside the container there will be some overhead. If you're on a RHEL-based distro and didn't configure devicemapper to use a proper thin pool there will be some overhead. Et cetera.
If you get things right though there shouldn't be any measurable performance difference with running containers. Also worth noting that orchestrators such as Kubernetes have their own overhead.
yeah I've been reading about those. maybe I'll have another crack at it with podman sometime soon. thanks for the input 🙏🙏🙏
I'd also note that rootless is going to have a greater overhead since there's a couple of extra things which need to run in userspace (e.g., slirp4netns). It isn't something specific to podman though.
yeah nothing is perfect in our world and I guess I'll have to evaluate the cost/benefits of using or not using containers. hopefully it's many months or years in the future for me 😜