Systemd 205 Presents "Major New Concepts"
Written by Michael Larabel in systemd on 3 July 2013 at 09:26 PM EDT. Add A Comment
Lennart Poettering released systemd 205 on Wednesday and with the new release comes some very significant changes.

Systemd 205 is a very big release so let's cut straight to the release announcement:
Let this one be known as the "dynamic" release, where things became dynamic! Or call it the "cgroups" release, where we took possession of the cgroup tree!

This release introduces a number of major new concepts, such as transient units, scopes and slices, which turn systemd into something that is far more dynamic than it ever was (this is primarily made visible in the new "systemd-run" tool, which I invite you to play around with). With this release the systemd binary now does *all* cgroup management (be it as the host's PID1, a session manager, or the PID 1 of a container), and logind and nspawn simply defer their cgroup work. All objects showing up in the cgroup tree are now objects managed by systemd itself. The APIs for this are not documented yet, but will be soon. This brings our systemd userspace much closer to the unified single-writer cgroup hierarchy that Tejun has being working towards from the kernel side.

There's two new unit types, a concept of transient units, logind updates, a new mini-daemon, cgroup changes, a new bus, the systemd-run tool, and much more to the systemd 205 release.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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