sftp/scp performance testing

[Mike Perham]

I applied the NODELAY patch, compiled and ran make install.  It had no
affect whatsoever to the localhost performance - still 5.5MB/min.  I added
a printf to sshd.c to verify that I was running a patched server.  On
connect from the sftp client, it printed the message out so I know it was
the correct binary.

I assume the patch should improve single file transfer performance or is
it intended for multiple simultaneous file transfers?

Is there a way to programmatically make sshd exit via a kill signal?  I'd
like to run gprof on it but I need to be able to shut it down without
Ctrl-C (needs to call exit()).

mike