Using a JDK 25+16 build running on Alpine 3.20 with Kernel 6.12+ and with the cgroups service turned on results in the following debug output:

alpine3:~$ ./jdk-25+16/bin/java -Xlog:os+container=debug --version
[0.001s][debug][os,container] Detected optional pids controller entry in /proc/cgroups
[0.001s][debug][os,container] controller cpuset is not enabled
[ ]
[0.001s][debug][os,container] controller memory is not enabled
[ ]
[0.001s][debug][os,container] One or more required controllers disabled at kernel level.
openjdk 25-beta 2025-09-16
OpenJDK Runtime Environment Temurin-25+16-202503272135 (build 25-beta+16-ea)
OpenJDK 64-Bit Server VM Temurin-25+16-202503272135 (build 25-beta+16-ea, mixed mode, sharing)

Note the extra empty lines in the trace output. We should fix this.

Note that the underlying issue of "controller not enabled" messages is fixed with JDK-8349988.