Understanding The Stabilized, High-Performance SD-Bus Of Systemd 221
Written by Michael Larabel in systemd on 19 June 2015 at 07:56 PM EDT. 4 Comments
SYSTEMD --
With today's release of systemd 221 besides enabling KDBUS support being compiled in unconditionally, it also stabilizes the new SD-BUS.

SD-BUS as of systemd 221 is now declared stable and an official interface of libsystemd. As explained in the release announcement, "sd-bus implements an alternative D-Bus client library, that is relatively easy to use, very efficient and supports both classic D-Bus as well as kdbus as transport backend. sd-event is a generic event loop abstraction that is built around Linux epoll, but adds features such as event prioritization or efficient timer handling. Both APIs are good choices for C programs looking for a bus and/or event loop implementation that is minimal and does not have to be portable to other kernels."

Lennart Poettering went on to describe SD-BUS in a new blog post. This SD-BUS library works with both traditional D-Bus and KDBUS. Besides supporting multiple back-ends, Lennart claims that this minimal library performs "substantially better" than libdbus and GDBus. This new blog post is quite lengthy and goes over all of the details for those interested.
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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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