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Comment by p0w3n3d | Hacker News Reader

My Podman starts containers in arch x86-64-v3 with rosetta on for 27 seconds which Docker does it in 9s. I wonder what's wrong. I've already upgraded Mac to Tahoe (which has x86-64-v3 support included into rosetta)

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There is definitely something wrong with your setup. I can run an amd64 container on my Macbook Pro M3 in well under a second:

    [~]$ podman pull --arch=amd64 debian:13
    Resolved "debian" as an alias (/etc/containers/registries.conf.d/000-shortnames.conf)
    Trying to pull docker.io/library/debian:13...
    Getting image source signatures
    Copying blob sha256:866771c43bf5eb77362eeeb163c0c825e194c2806d0b697028434e3b9c02f59d
    Copying config sha256:a3624ddeb711bef28c29e6de1502fc3ef9df132c220d1db5a121b2a1e2a74256
    Writing manifest to image destination
    a3624ddeb711bef28c29e6de1502fc3ef9df132c220d1db5a121b2a1e2a74256

    [~]$ time podman run --rm -ti debian:13 uname -m
    WARNING: image platform (linux/amd64) does not match the expected platform (linux/arm64)
    x86_64
    podman run --rm -ti debian:13 uname -m  0.03s user 0.02s system 9% cpu 0.456 total

I've checked and there is no difference between podman and docker on my machine.

However when running a spring boot over eclipse-temurin:25-jdk-ubi10-minimal image there is this huge difference

  podman run   0.02s user 0.01s system 0% cpu 24.960 total

you can see the java app starting slowly. I've double checked that rosetta is enabled on podman.

  % podman machine inspect podman-machine-default
  ...

        "Rootful": true,
        "Rosetta": true
     }
  ]

Ahhh, one of the reasons could be that Docker Desktop by default uses 50% of your RAM when they create their VM and the maximum amount of CPUs.

Podman Desktop by default has a much lower RAM (4GB) + CPU usage (50% CPU). That's something that could be improved... I've opened up an issue: https://github.com/podman-desktop/podman-desktop/issues/1634... :)

No I checked it against the amount of RAM. Podman with 8GB does not increase speed, Docker with 4GB is still 9s

  podman run   27->24
  docker run   9.4->9.769 total

(I increased limit in podman and decreased limit in docker). This happens with amd64 arch images (which I for some reason need in my work and cannot rebuild)

now I'm curious why it's still slow even with the increase of ram + cpu, I'll sync up with the podman core team why it's benchmarking much faster in docker vs podman (assuming both are using rosetta 2 on your machine)

I have double checked if my rosetta is enabled. I also requrested using "apple virtualization" instead of libkrun

> now I'm curious why it's still slow even with the increase of ram + cpu

Because podman doesn't work as well as docker.

are you by any chance one of those Claw raging robots? really? created an issue?

Pretty sure this guy works in that project.

(The poster works on podman for redhat)

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