Docker stats doesn't work on 128 CPUs core system (error scanning '/proc/stat' file: bufio.Scanner: token too long") #49709
Description
Description
We are unable to get stats from docker containers on ARM server with 128 CPU cores... The stats just shows zero values and /var/log/messages is spammed with this error message:
CONTAINER ID NAME CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O PIDS
75a2d37961f0 mysql1 0.00% 0B / 0B 0.00% 0B / 0B 0B / 0B 0
4da2f013161e apache1 0.00% 0B / 0B 0.00% 0B / 0B 0B / 0B 0
Mar 28 11:40:36 localhost dockerd[2820]: time="2025-03-28T11:40:36.493046461+01:00" level=error msg="collecting stats for container /apache1: error scanning '/proc/stat' file: bufio.Scanner: token too long"
Mar 28 11:40:37 localhost dockerd[2820]: time="2025-03-28T11:40:37.495361805+01:00" level=error msg="collecting stats for container /mysql1: error scanning '/proc/stat' file: bufio.Scanner: token too long"
Mar 28 11:40:37 localhost dockerd[2820]: time="2025-03-28T11:40:37.497097407+01:00" level=error msg="collecting stats for container /apache1: error scanning '/proc/stat' file: bufio.Scanner: token too long"
Mar 28 11:40:38 localhost dockerd[2820]: time="2025-03-28T11:40:38.499816392+01:00" level=error msg="collecting stats for container /mysql1: error scanning '/proc/stat' file: bufio.Scanner: token too long"
Mar 28 11:40:38 localhost dockerd[2820]: time="2025-03-28T11:40:38.501417114+01:00" level=error msg="collecting stats for container /apache1: error scanning '/proc/stat' file: bufio.Scanner: token too long"
Reproduce
Run any container on 128 CPU core system and check docker stats.
Expected behavior
No response
docker version
Client: Docker Engine - Community
Version: 28.0.4
API version: 1.48
Go version: go1.23.7
Git commit: b8034c0
Built: Tue Mar 25 15:10:30 2025
OS/Arch: linux/arm64
Context: default
Server: Docker Engine - Community
Engine:
Version: 28.0.4
API version: 1.48 (minimum version 1.24)
Go version: go1.23.7
Git commit: 6430e49
Built: Tue Mar 25 15:08:58 2025
OS/Arch: linux/arm64
Experimental: false
containerd:
Version: 1.7.26
GitCommit: 753481ec61c7c8955a23d6ff7bc8e4daed455734
runc:
Version: 1.2.5
GitCommit: v1.2.5-0-g59923ef
docker-init:
Version: 0.19.0
GitCommit: de40ad0docker info
Client: Docker Engine - Community
Version: 28.0.4
Context: default
Debug Mode: false
Plugins:
buildx: Docker Buildx (Docker Inc.)
Version: v0.22.0
Path: /usr/libexec/docker/cli-plugins/docker-buildx
compose: Docker Compose (Docker Inc.)
Version: v2.34.0
Path: /usr/libexec/docker/cli-plugins/docker-compose
Server:
Containers: 3
Running: 2
Paused: 0
Stopped: 1
Images: 10
Server Version: 28.0.4
Storage Driver: overlay2
Backing Filesystem: xfs
Supports d_type: true
Using metacopy: false
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: systemd
Cgroup Version: 2
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 753481ec61c7c8955a23d6ff7bc8e4daed455734
runc version: v1.2.5-0-g59923ef
init version: de40ad0
Security Options:
seccomp
Profile: builtin
cgroupns
Kernel Version: 5.14.0-503.33.1.el9_5.aarch64+64k
Operating System: Rocky Linux 9.5 (Blue Onyx)
OSType: linux
Architecture: aarch64
CPUs: 128
Total Memory: 126.4GiB
Name: localhost.localdomain
ID: 75fc5d8d-e34f-458a-b3da-7ad00033e73c
Docker Root Dir: /var/lib/docker
Debug Mode: false
Experimental: false
Insecure Registries:
::1/128
127.0.0.0/8
Live Restore Enabled: falseAdditional Info
No response