Red Hat Summit Red Hat Summit지원콘솔개발자평가판 시작연락처

2.9.2. Process Behavior in the Root Control Group

Certain blkio and cpu configuration options affect processes (tasks) running in the root cgroup in a different way than those in a subgroup. Consider the following example:
  1. Create two subgroups under one root group: /rootgroup/red/ and /rootgroup/blue/
  2. In each subgroup and in the root group, define the cpu.shares configuration option and set it to 1.
In the scenario configured above, one process placed in each group (that is, one task in /rootgroup/tasks, /rootgroup/red/tasks and /rootgroup/blue/tasks) consumes 33.33% of the CPU: 
/rootgroup/ process:      33.33%
/rootgroup/blue/ process: 33.33%
/rootgroup/red/ process:  33.33%
Copy to Clipboard Toggle word wrap
Any other processes placed in subgroups blue and red result in the 33.33% percent of the CPU assigned to that specific subgroup to be split among the multiple processes in that subgroup.
However, multiple processes placed in the root group cause the CPU resource to be split per process, rather than per group. For example, if /rootgroup/ contains three processes, /rootgroup/red/ contains one process and /rootgroup/blue/ contains one process, and the cpu.shares option is set to 1 in all groups, the CPU resource is divided as follows: 
/rootgroup/ processes:    20% + 20% + 20%
/rootgroup/blue/ process: 20%
/rootgroup/red/ process:  20%
Copy to Clipboard Toggle word wrap
Therefore, it is recommended to move all processes from the root group to a specific subgroup when using the blkio and cpu configuration options which divide an available resource based on a weight or a share (for example, cpu.shares or blkio.weight). To move all tasks from the root group into a specific subgroup, you can use the following commands: 
rootgroup]# cat tasks >> red/tasks
rootgroup]# echo > tasks
Copy to Clipboard Toggle word wrap
맨 위로 이동
Red Hat logoGithubredditYoutubeTwitter

자세한 정보

평가판, 구매 및 판매

커뮤니티

Red Hat 문서 정보

Red Hat을 사용하는 고객은 신뢰할 수 있는 콘텐츠가 포함된 제품과 서비스를 통해 혁신하고 목표를 달성할 수 있습니다. 최신 업데이트를 확인하세요.

보다 포괄적 수용을 위한 오픈 소스 용어 교체

Red Hat은 코드, 문서, 웹 속성에서 문제가 있는 언어를 교체하기 위해 최선을 다하고 있습니다. 자세한 내용은 다음을 참조하세요.Red Hat 블로그.

Red Hat 소개

Red Hat은 기업이 핵심 데이터 센터에서 네트워크 에지에 이르기까지 플랫폼과 환경 전반에서 더 쉽게 작업할 수 있도록 강화된 솔루션을 제공합니다.

Theme

© 2025 Red Hat