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SubjectRe: [PATCH v3 00/13] Add kdbus implementation
On Tue, Jan 20, 2015 at 04:31:55AM +0800, Greg Kroah-Hartman wrote:
> On Mon, Jan 19, 2015 at 09:19:06PM +0100, Johannes Stezenbach wrote:
> > These two statements somehow contradict. From my admittedly very
> > limited experience, I never used D-Bus because it did not
> > fit my usage scenarios: I never needed a bus, only point-to-point
> > links like pipes or sockets.
>
> Great, then you don't need this, no need to worry about it at all, why
> are we having this conversation? :)

Well, for one because that's what I wanted to find out...

> > Well, it made your intentions a bit clearer, but it does
> > not help to sell kdbus to me, sorry ;-/
>
> It's not my "goal" to sell kdbus to you, if you don't want it, great,

I used this language because I think you're not providing
the facts that would allow me to judge for myself whether
kdbus is a good idea. Those automotive applications you
were talking about, what was the OS they were ported from
and what was the messaging API they used?

> But odds are, you are using a system with D-Bus today, if not, then you
> are using Linux in a very specific and limited manner, which is
> wonderful, in that case this whole thread isn't really pertinent.
>
> Lots of people do use D-Bus, and for those users, that is what this
> patchset is for.

As I said before, I'm seeing about a dozen D-Bus messages per minute,
nothing that would justify adding kdbus to the kernel for
performance reasons. Wrt security I'm also not aware of any
open issues with D-Bus. Thus I doubt normal users of D-Bus
would see any benefit from kdbus. I also think none of the
applications I can install from my distribution has any performance
issue with D-Bus.

And this is the point where I ask myself if I missed something.


Thanks,
Johannes


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