3 ms·

> Tangent, but the 2nd point is intriguing. How does one use cgroups to set up resource limitations? Is there any kind of decent front-end? I've seen the kernel

> Tangent, but the 2nd point is intriguing. How does one use cgroups to set up resource limitations? Is there any kind of decent front-end? I've seen the kernel documentation, but how do I use it? Use systemd: http://0pointer.de/blog/projects/resources.html http://0pointer.de/blog/projects/resources.html Systemd makes these kernel features finally usable.

_delirium 13y ago
That looks interesting for some use-cases, but I don't see a way to use it to assign limits to users, or to processes that aren't started as systemd services. What I have in mind is that I give someone ssh access, they run R or matlab or from the command line, but limited to 512mb (or 1Gb or whatever) of total memory.
- WestCoastJustin 13y ago
  On RHEL systems you can use the 'cgred' service to classify processes based on the user running it or the command itself. For example, say you have user X who always logs in and runs rsync commands and saturates the link. You can automatically classify this user or rsync process into a cgroup that throttles the network IP (or in your use case, memory) -- problem solved. There is some great documentation @ https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/Resource_Management_Guide/index.html#The_cgred_Service https://access.redhat.com/site/documentation/en-US/Red_Hat_E...
  - viraptor 13y ago
    It's not RHEL-specific. Ubuntu and pretty much everything that includes cgroups tools has it.
- shykes 13y ago
  You could build a matlab docker container and limit memory with 'docker run -m 512M delirium/matlab' :) See http://docker.io http://docker.io
- hdevalence 13y ago
  You're in luck; this specific usecase is documented on the Arch Wiki: https://wiki.archlinux.org/index.php/cgroups#Matlab https://wiki.archlinux.org/index.php/cgroups#Matlab

3 ms·

> Tangent, but the 2nd point is intriguing. How does one use cgroups to set up resource limitations? Is there any kind of decent front-end? I've seen the kernel

by mseepgood 13y ago

_delirium 13y ago
That looks interesting for some use-cases, but I don't see a way to use it to assign limits to users, or to processes that aren't started as systemd services. What I have in mind is that I give someone ssh access, they run R or matlab or from the command line, but limited to 512mb (or 1Gb or whatever) of total memory.
- WestCoastJustin 13y ago
  On RHEL systems you can use the 'cgred' service to classify processes based on the user running it or the command itself. For example, say you have user X who always logs in and runs rsync commands and saturates the link. You can automatically classify this user or rsync process into a cgroup that throttles the network IP (or in your use case, memory) -- problem solved. There is some great documentation @ https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/Resource_Management_Guide/index.html#The_cgred_Service https://access.redhat.com/site/documentation/en-US/Red_Hat_E...
  - viraptor 13y ago
    It's not RHEL-specific. Ubuntu and pretty much everything that includes cgroups tools has it.
- shykes 13y ago
  You could build a matlab docker container and limit memory with 'docker run -m 512M delirium/matlab' :) See http://docker.io http://docker.io
- hdevalence 13y ago
  You're in luck; this specific usecase is documented on the Arch Wiki: https://wiki.archlinux.org/index.php/cgroups#Matlab https://wiki.archlinux.org/index.php/cgroups#Matlab