OSNews

Yes, very old. The link is even dated in the url, and is plainly dated once you get there and read it (Nov 18th, 2010). Maybe it was never posted on osnews, I don't remember, but it certainly made the rounds everywhere else.

Edited 2011-01-08 00:47 UTC

and works with systemd only

yup (I think systemd 10+ only, in fact).

Bull crap. cgroups has nothing to do with systemd. You have your dependencies backwards.

So what if it's "old" news.
Not all of us frequent dozens of IT sites.

It's note worthy enough for archiving purposes alone.

Edited 2011-01-08 12:33 UTC

This is the kind of news that should have been an addendum to the original article, or posted the next day. The alternative was posted on November 16th, which is the same day as the original OS News coverage, but several hours earlier.

The setup in the linked article is designed to create a new cgroup for each new shell (and their child processes).

There is nothing to stop you from creating cgroups of your own design though.

To find out what the "200 lines" patch did was easy, and I did it when the article was first published; you simply had to go to the LKML thread on the topic and read it. No understanding of C was required. You can go back and do that now, if you like.

What's more, this shell script approach was brought up in that very same LKML thread at that time and how it works was described to some extent.

Some understanding of CPU scheduling in general and Linux cgroups in particular is helpful to understand what's going on here. So...

Official Kernel documentation on CGroups:
http://www.mjmwired.net/kernel/Documentation/cgroups.txt

Not recommended as an introduction, but if you miss details elsewhere this is for you.

Red Hat CGroups documentation:
http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/R...

And from the simple end, wikipedia:
http://en.wikipedia.org/wiki/Cgroups

Now that you understand what cgroups are, let's get ni to the patch:

Here's the LWN article covering the feature from the "200 line" patch, which explains it in some detail and the discussion around it:
http://lwn.net/Articles/415740/

Here's the original LKML thread, which by now is scarily-long. I still recommend it since it's the primary source:
http://thread.gmane.org/gmane.linux.kernel/1050575

Specifically, look at this post for the origin of the shell script version referenced by this very-late article:
http://article.gmane.org/gmane.linux.kernel/1063263

Now you, too, can be in the loop!

Thank you for this comprehensive post although I wasn't asking for references (but I will read them) but just pointing out the lack of reader-friendliness and immediate information. When I read the linked article and its comments, it felt obvious that some information was missing. Thanks.