dbus moving into kernel?

Tilman Baumann tilman at baumann.name
Mon Sep 20 12:32:21 CEST 2010

Patryk Benderz wrote:
> Dnia 2010-09-16, czw o godzinie 17:23 +0100, Al Johnson pisze:
>> kdbus is proof-of-concept at the moment, the idea being to reduce the
>> number
>> of context switches needed for each dbus message. One synthetic
>> benchmark
>> shows a 3x speed increase on the n900 but speedup in real world
>> applications
>> seems much more modest.
> There are a lot of complaints about Dbus IPC. That makes me wonder why
> people don't use one of already existing kernel IPCs [1][2] , and
> instead try to develop another one, which is not secure as I heard?
> [1] http://tldp.org/LDP/lpg/node7.html
> [2] http://tldp.org/LDP/tlk/ipc/ipc.html

Actually, netlink comes to mind as a transport layer for something like dbus.
It can not all that dbus can, but most of those so called features are
actually a total wank anyway. At least it would scale.
But I suppose this discussion was lost when dbus was new and it is
pointless these days. Dbus will probably have a successor some day, and
with any luck it will have more sane foundations...

Actually, dbus is not that bad. Some of the things it can do require a
approach like they took. Question is, should we have sacrificed those
features on the alter of simplicity? I'm not even sure I have a answer to

 Tilman Baumann

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