I booted the new kernel this morning. Using cgroupv2 I got % docker run -it --rm -m 4g --cpus=3 debian:trixie root@b46ebbb70b04:/# apt update Get:1 http://deb.debian.org/debian trixie InRelease [168 kB] Get:2 http://deb.debian.org/debian trixie-updates InRelease [45.1 kB] Get:3 http://deb.debian.org/debian-security trixie-security InRelease [43.4 kB] Get:4 http://deb.debian.org/debian trixie/main amd64 Packages [9672 kB] Get:5 http://deb.debian.org/debian-security trixie-security/main amd64 Packages [5304 B] Fetched 9934 kB in 1s (9313 kB/s) 13 packages can be upgraded. Run 'apt list --upgradable' to see them. root@b46ebbb70b04:/# apt -y install default-jdk : : root@b46ebbb70b04:/# java -Xlog:os+container=trace --version [0.001s][trace][os,container] OSContainer::init: Initializing Container Support [0.001s][debug][os,container] Detected optional cpuset controller entry in /proc/cgroups [0.001s][debug][os,container] Detected optional pids controller entry in /proc/cgroups [0.002s][debug][os,container] Detected cgroups v2 unified hierarchy [0.002s][trace][os,container] Path to /cpu.max is /sys/fs/cgroup/cpu.max [0.002s][trace][os,container] Raw value for CPU quota is: 300000 [0.002s][trace][os,container] CPU Quota is: 300000 [0.002s][trace][os,container] Path to /cpu.max is /sys/fs/cgroup/cpu.max [0.002s][trace][os,container] CPU Period is: 100000 [0.002s][trace][os,container] CPU Quota count based on quota/period: 3 [0.002s][trace][os,container] OSContainer::active_processor_count: 3 [0.002s][trace][os,container] CgroupSubsystem::active_processor_count (cached): 3 [0.002s][trace][os,container] total physical memory: 67099267072 [0.002s][trace][os,container] Path to /memory.max is /sys/fs/cgroup/memory.max [0.002s][trace][os,container] Raw value for memory limit is: 4294967296 [0.002s][trace][os,container] Memory Limit is: 4294967296 [0.004s][trace][os,container] CgroupSubsystem::active_processor_count (cached): 3 [0.027s][trace][os,container] Path to /cpu.max is /sys/fs/cgroup/cpu.max [0.027s][trace][os,container] Raw value for CPU quota is: 300000 [0.027s][trace][os,container] CPU Quota is: 300000 [0.027s][trace][os,container] Path to /cpu.max is /sys/fs/cgroup/cpu.max [0.027s][trace][os,container] CPU Period is: 100000 [0.027s][trace][os,container] CPU Quota count based on quota/period: 3 [0.027s][trace][os,container] OSContainer::active_processor_count: 3 openjdk 21.0.7 2025-04-15 OpenJDK Runtime Environment (build 21.0.7+6-Debian-1) OpenJDK 64-Bit Server VM (build 21.0.7+6-Debian-1, mixed mode, sharing)
This looks as expected. CPU and memory limits are correct. Now I have to wait for a backport for Bookworm to roll out the new kernel to our developers and to our Kubernetes nodes. Thank you very much. I highly appreciate your contribution to Debian. Harri
