Re: anyone ever done multicast AF_UNIX sockets?

Chris Friesen [off-list ref] writes:

I'll look at how they were measuring unix socket throughput and try 
implementing something similar for UDP.  It's not clear to me how to 
really measure throughput in a multicast environment though since it 
depends very much on your application messaging patterns.

Unix sockets are often slower than TCP over loopback because they use
much smaller socket sizes by default. This causes much more context 
switches.

Just run a vmstat 1 in parallel and watch the context switch rates.

You can fix it by increasing the send and receive buffers of the unix
socket.

-Andi