I know there's no single hard-and-fast answer, but is there a generic order-of-magnitude estimate approximation for the encryption overhead of SSL versus unencrypted socket communication? I'm talking only about the comm processing and wire time, not counting application-level processing.
There is a question about HTTPS versus HTTP, but I'm interested in looking lower in the stack.
(I replaced the phrase "order of magnitude" to avoid confusion; I was using it as informal jargon rather than in the formal CompSci sense. Of course if I had meant it formally, as a true geek I would have been thinking binary rather than decimal! ;-)
Per request in comment, assume we're talking about good-sized messages (range of 1k-10k) over persistent connections. So connection set-up and packet overhead are not significant issues.