Ubuntu 22.04 LTS做CPU亲和性设置的方法

[jacky_chenlong7789]

Hi All,

其中在Ubuntu 20.04 LTS的/sys/fs/cgroup/cpuset创建目录 tailor tinker,会有生成有： tasks、cpuset.cpus 、cpuset.mems 文件，
但是在Ubuntu 22.04 LTS的/sys/fs/cgroup/cpuset创建目录 tailor tinker,不会有生成有： tasks、cpuset.cpus 、cpuset.mems 文件。
因此在Ubuntu 20.04 LTS能做cpuset的配置CPU亲和性，但是在Ubuntu 22.04 LTS中就不能。
请问下，有没有在Ubuntu 22.04 LTS做CPU亲和性设置的方法。谢谢！

Ubuntu 22.04 LTS setting cpuset
root@ubuntu:/sys/fs/cgroup/cpuset# mkdir tailor tinker
root@ubuntu:/sys/fs/cgroup/cpuset#ls tailor
cgroup.controllers cgroup.kill cgroup.procs cgroup.threads cpu.stat
cgroup.events cgroup.max.depth cgroup.stat cgroup.type io.pressure
cgroup.freeze cgroup.max.descendants cgroup.subtree_control cpu.pressure memory.pressure

Why Create directory /sys/fs/cgroup/cpuset/tailor in 22.04 no files:cpuset.cpus、tasks、cpuset.mems ？But there are these files in 20.04 LST.

Ubuntu 20.04 LTS server setting cpuset:
root@ub20:/sys/fs/cgroup/cpuset# mkdir tailor tinker
root@ub20:/sys/fs/cgroup/cpuset# cd tailor/
root@ub20:/sys/fs/cgroup/cpuset/tailor# ls
cgroup.clone_children cpuset.effective_cpus cpuset.memory_migrate cpuset.mems tasks
cgroup.procs cpuset.effective_mems cpuset.memory_pressure cpuset.sched_load_balance
cpuset.cpu_exclusive cpuset.mem_exclusive cpuset.memory_spread_page cpuset.sched_relax_domain_level
cpuset.cpus cpuset.mem_hardwall cpuset.memory_spread_slab notify_on_release

[astolia]

遇事不决查文档 https://www.kernel.org/doc/html/latest/ ... usets.html

To start a new job that is to be contained within a cpuset, the steps are:
1. mkdir /sys/fs/cgroup/cpuset
2. mount -t cgroup -ocpuset cpuset /sys/fs/cgroup/cpuset
3. Create the new cpuset by doing mkdir’s and write’s (or echo’s) in the /sys/fs/cgroup/cpuset virtual file system.
4. Start a task that will be the “founding father” of the new job.
5. Attach that task to the new cpuset by writing its pid to the /sys/fs/cgroup/cpuset tasks file for that cpuset.
6. fork, exec or clone the job tasks from this founding father task.