Re: [PATCH 0/10] af_unix: add multicast and filtering features to AF_UNIX

[Eric Dumazet]

Le 1 mars 2012 08:02, Luiz Augusto von Dentz <luiz.dentz@xxxxxxxxx> a écrit :
>
> Contrary to someones believes I don't think AF_INET is that fast (e.g.
> http://scottmoonen.com/2008/04/05/a-performance-comparison-of-af_unix-with-loopback-on-linux/)
>

Oh you mention a recent zork it seems ;)

Are we speaking of performance problems, apart from scheduler problems
for D-Bus (each message wakeing all receivers, all receivers read and
drop message but the target) ?

I am actually one of the few people working to improve performance on
both AF_INET and AF_UNIX parts. Just take a look at recent commits.

Right now you can send/receive millions of udp messages per second on
your linux machine, if you figured out how to avoid process scheduler
costs. If D-Bus wants more, I highly suggest using shared memory
instead of passing messages.
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