Andi Kleen wrote:
On a 1.4GHz P4 I measured a 44% increase in latency between a unix datagram and a UDP datagram.
That's weird.
I just reran on a 3.2GHZ P4 running 2.6.11 (Fedora Core 4). 42% latency increase.
For stream sockets, unix gives approximately a 62% bandwidth increase over tcp. (Although tcp could probably be tuned to do better than this.)
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