what is the limit on number of concurrent Xvnc servers?

[Björn Persson]

Beerse, Corni wrote:
> How do you mean? X11 always use the network, that's one of the design
> basics of X11. By default it is the loopback device (localhost, 127.0.0.1)
> but it is always used.

X also has other, presumably faster, means of communicating with local 
clients. I think it can use both Unix sockets and shared memory. If you give 
"-nolisten tcp" on the command line to Xfree86 or XVNC, it won't accept 
connections from clients on other machines but still work just fine with 
local clients. With "-nolisten local" it only listens on TCP, so even local 
clients have to make the detour over the networking subsystem.

Bjvrn Persson