Fixing /proc/cpuinfo on Rosetta

[corneliusroemer]

Description

I'm making a new issue following up on:

• cpuinfo poorly emulated on M1 Macs #6047
• /proc/cpuinfo inside containers reports meaningless data on Apple M1 Max #6111
• Please fix /proc/cpuinfo  #6512

because recent Docker Desktop for Mac releases no longer rely on QEMU.

The issues were closed as "blocked/upstream" pointing at this QEMU issue: https://gitlab.com/qemu-project/qemu/-/issues/750

However, now that Rosetta is used by default on latest macOS, the QEMU issue should no longer be blocking. However, it seems that the issue is still not fixed even when using Rosetta 2. Is there a new upstream issue, now in Rosetta? Or is QEMU still used to some extent?

Context: I'm trying to get k3s amd64 images to work but this fails as explained in this issue: k3s-io/k3s#4720

Reproduce

1. Make sure Rosetta 2 is enabled in settings in Docker Desktop
2. Run docker run -it --platform linux/amd64 alpine:latest cat /proc/cpuinfo

Expected behavior

I get the cpuinfo in the layout of the emulated system, looking somewhat like this:

processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 23
model           : 1
model name      : AMD Ryzen Threadripper 1900X 8-Core Processor
stepping        : 1
microcode       : 0x8001129
cpu MHz         : 2180.123
cache size      : 512 KB
physical id     : 0
siblings        : 16
core id         : 0
cpu cores       : 8
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 13
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid amd_dcm aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb hw_pstate sme ssbd vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 xsaves clzero irperf xsaveerptr arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif overflow_recov succor smca
bugs            : sysret_ss_attrs null_seg spectre_v1 spectre_v2 spec_store_bypass
bogomips        : 7599.04
TLB size        : 2560 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 43 bits physical, 48 bits virtual
power management: ts ttp tm hwpstate eff_freq_ro [13] [14]
--- snip ---

Actual behavior:

I get

processor       : 0
BogoMIPS        : 48.00
Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint
CPU implementer : 0x00
CPU architecture: 8
CPU variant     : 0x0
CPU part        : 0x000
CPU revision    : 0
--- snip ---

docker version

Client:
 Cloud integration: v1.0.35+desktop.5
 Version:           24.0.6
 API version:       1.43
 Go version:        go1.20.7
 Git commit:        ed223bc
 Built:             Mon Sep  4 12:28:49 2023
 OS/Arch:           darwin/arm64
 Context:           desktop-linux

Server: Docker Desktop 4.25.1 (128006)
 Engine:
  Version:          master
  API version:      1.44 (minimum version 1.12)
  Go version:       go1.21.3
  Git commit:       0253fedf03f4964c20906795e119404633cb9c1a
  Built:            Thu Oct 19 08:35:54 2023
  OS/Arch:          linux/arm64
  Experimental:     true
 containerd:
  Version:          1.6.22
  GitCommit:        8165feabfdfe38c65b599c4993d227328c231fca
 runc:
  Version:          1.1.8
  GitCommit:        v1.1.8-0-g82f18fe
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

docker info

Client:
 Version:    24.0.6
 Context:    desktop-linux
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.11.2-desktop.5
    Path:     /Users/corneliusromer/.docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.23.0-desktop.1
    Path:     /Users/corneliusromer/.docker/cli-plugins/docker-compose
  dev: Docker Dev Environments (Docker Inc.)
    Version:  v0.1.0
    Path:     /Users/corneliusromer/.docker/cli-plugins/docker-dev
  extension: Manages Docker extensions (Docker Inc.)
    Version:  v0.2.20
    Path:     /Users/corneliusromer/.docker/cli-plugins/docker-extension
  init: Creates Docker-related starter files for your project (Docker Inc.)
    Version:  v0.1.0-beta.9
    Path:     /Users/corneliusromer/.docker/cli-plugins/docker-init
  sbom: View the packaged-based Software Bill Of Materials (SBOM) for an image (Anchore Inc.)
    Version:  0.6.0
    Path:     /Users/corneliusromer/.docker/cli-plugins/docker-sbom
  scan: Docker Scan (Docker Inc.)
    Version:  v0.26.0
    Path:     /Users/corneliusromer/.docker/cli-plugins/docker-scan
  scout: Docker Scout (Docker Inc.)
    Version:  v1.0.9
    Path:     /Users/corneliusromer/.docker/cli-plugins/docker-scout

Server:
 Containers: 34
  Running: 20
  Paused: 0
  Stopped: 14
 Images: 18
 Server Version: master
 Storage Driver: stargz
  driver-type: io.containerd.snapshotter.v1
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 8165feabfdfe38c65b599c4993d227328c231fca
 runc version: v1.1.8-0-g82f18fe
 init version: de40ad0
 Security Options:
  seccomp
   Profile: unconfined
  cgroupns
 Kernel Version: 6.4.16-linuxkit
 Operating System: Docker Desktop
 OSType: linux
 Architecture: aarch64
 CPUs: 10
 Total Memory: 11.68GiB
 Name: linuxkit-2ec2e4e73b30
 ID: 2d9717eb-dd17-47cb-b40b-576d50e76161
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 HTTP Proxy: http.docker.internal:3128
 HTTPS Proxy: http.docker.internal:3128
 No Proxy: hubproxy.docker.internal
 Experimental: true
 Insecure Registries:
  hubproxy.docker.internal:5555
  127.0.0.0/8
 Live Restore Enabled: false

WARNING: daemon is not using the default seccomp profile

Diagnostics ID

239B7F30-E6B8-4B1A-BC49-328E5B2FB8AA/20231115030111

Additional Info

If anyone has found a workaround for this general problem of kubernetes amd64 cluster on M1 mac let me know. I'm totally blocked right now.

[hackgrid]

This should be fixed! Many people complain about that online :-(

[corneliusroemer]

Limited workaround is to use colima instead of docker desktop, but with lots of downsides, e.g. more resource intensive, slower, less reliable etc.

[vanakema]

Has anyone figured out a workaround for this issue? Unfortunately Supabase is not compatible with arm64 (at least not Bitnami's docker image for it), which means we need some way of emulating amd64 in our k3d environment.