Note: PP-810 contains additional updates to the cgroup design.
Overview:
The objective of
| Jira Legacy |
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| server | JIRA (pbspro.atlassian.net) |
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| serverId | 32008a99-7831-3ff8-9638-3db0cd01164d |
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| key | PP-325 |
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is to provide a hook that restricts resource availability for job processes by utilizing the Linux cgroup infrastructure. An introductory video to cgroups together with links to other resources may be found here:
https://sysadmincasts.com/episodes/14-introduction-to-linux-control-groups-cgroups The definitive Linux kernel cgroup documentation may be found here:
https://www.kernel.org/doc/Documentation/cgroup-v1/ It is assumed that the reader is familiar with the various cgroup subsystems and how they may be utilized. When the cgroup hook is enabled, it runs on every node assigned to the job that supports cgroups. When a job is started, the hook creates a set of directories for the configured subsystems based on the resource requirements of the job and then places the job process within the cgroup. The kernel then enforces resource restrictions based on the newly created cgroup settings while the job is running. The cgroup hook may be configured to periodically poll the job's cgroup while the job is running and updates resource utilization. When the job completes, the final resource utilization measurement is taken and the hook removes the cgroup directories it created when the job was initialized.
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