Difference between revisions of "Cgroups"
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↑ https://kernelnewbies.org/Linux_5.4#More_accurate_cgroup_I.2FO_control_with_blk-iocost
↑ https://www.freedesktop.org/software/systemd/man/systemd-cgtop.html
| Line 17: | Line 17: | ||
==Basic Commands== | ==Basic Commands== | ||
*Create a group : <code>[[cgcreate]] -g memory:myGroup</code> | *Create a group : <code>[[cgcreate]] -g memory:myGroup</code> | ||
| + | *<code>[[cgexec]] -g memory:myGroup YOUR_PROGRAM_TO_EXEC</code> | ||
| − | |||
* You can use <code>[[cgget]]</code> to view the current limits, usage, & high watermarks of the group: | * You can use <code>[[cgget]]</code> to view the current limits, usage, & high watermarks of the group: | ||
Revision as of 08:10, 29 May 2020
This article is a Draft. Help us to complete it.
Pacakges
cgroups functionality that was released in Linux Kernel version 2.6.24
Packages:
cgroup-lite:cgroups-mount, cgroups-umountcgroup-tools:cgcreate,cgexec,lscgroupamong otherscgroupfs-mount
systemd-cgls systemd-cgls memory systemd-cgtop
Basic Commands
- You can use
cggetto view the current limits, usage, & high watermarks of the group:
sudo cgget -g memory:/myGroup|grep bytes memory.kmem.tcp.usage_in_bytes: 0 memory.soft_limit_in_bytes: 9223372036854771712 memory.kmem.tcp.max_usage_in_bytes: 0 memory.max_usage_in_bytes: 0 memory.limit_in_bytes: 9223372036854771712 memory.kmem.max_usage_in_bytes: 0 memory.usage_in_bytes: 0 memory.kmem.limit_in_bytes: 9223372036854771712 memory.kmem.usage_in_bytes: 0 memory.kmem.tcp.limit_in_bytes: 9223372036854771712
I/O control, more accurate cgroup I/O control with blk-iocost[1]
Related terms
Activities
- Read https://wiki.archlinux.org/index.php/cgroups
- How to limit to CPU and Memory : cgcreate
See also
systemd-cgtop[2],docker statsnetdatacgroups plugincgroups:cgcreate, cgroups v2- Containers, OCI: Docker (
dockerd),containerd,runc, Podman, buildah, skopeo, lxd, Container Registry, Service mesh, Windows Server containers, Containerpilot, CoreOS, CAdvisor, Containers networking, Container scanning, cosign, CRI, CRI-O,initContainers, Sidecar container, Container images, latest - IO performance:
iotop, iostat, sar -d, fio, nmon, vmstat -d,dd,nmon,stress - Linux Kernel: namespaces, Cgroups, OOM, proc, Linux Kernel changelog,
sysctl, userfaultfd, Grub, ENOSPC, ENOMEM, DKMS, syscall, Transparent huge pages, smatch, sysfs, vm.swappiness, CFS, Runlevel, Jens Axboe, Consistent Network Device Naming, Initial ramdisk (initrd),modprobe, MTD, Linux Kernel vulnerabilities,/sys/kernel/, KernelCare,unix://, Data Plane Development Kit (DPDK)
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