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SubjectRe: Unix domain sockets being slooooooooooooooooooooooooowwwwwwwww
> I think there's a minimum packet length over ethernet that is killing you
> with overhead. I think it's 64 bytes. If you have a 1-byte semaphore, you
> are only using about 1/64th of the available data bandwidth.

The actual wasted 63 bytes is but a tiny fraction of the cost of getting
a packet to wire - a lot of it is going to the hardware setup overheads,
and even the linux syscall overhead too

Effectively its an equation of the form


which means small messages get you into poor performance areas. Doing it
with tcp not udp really makes it fun

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