[Click] User-level Click and Multithreaded support

[Tom Gibson]

Hi all,

Its been a little while since I worked with Click and I just recently
started again.  With my previous usage I limited myself to Kernel mode Click
mainly because it looked to be the only way to utilize my multi-core (8
total) servers processing capabilities.  The other day I ran ./configure
--help and noticed an option to enable experimental user-mode multithreaded
support.

Is this coming along well and is it expected to be fully mature / stable
later?

How would its performance compare to Kernel mode Click?  I have only a
generalized concept that it will be slower in because of the extra overhead
changing contexts to/from Kernel mode, but I don't know how often this
happens and what other factors are involved.

-Tom