Edward Ruggeri wrote:
Hi all,
(This may actually be a question for the dtach people).
I've recently been using dtach (basically the detach function of
screen) over SSH to instruct my freeBSD machine to perform long tasks
even after I disconnect from it. It's worked great: I run SSH and
connect to my box, execute dtach to create a new session in which to
execute a program, hit ctr-\ to detach the session from the terminal,
and then I can close the SSH tunnel.
Recently, I figured to do this with portupgrade. Now, I don't allow
root login, so I log in as a user in the wheel group and use su. Now,
as root, I run: dtach -A portupgrade -a. It starts working, but
extremely slowly. For instance, "portsnap fetch update" takes several
minutes, whereas it normally is blazing fast when performed locally.
I can still detach, exit root, and close the SSH tunnel. I suppose
this is probably a dtach performance issue?
Likely unrelated to either. There is nothing that would make root
perform any differently than other users, and dtach only affects the
terminal handling and not any other aspect of the system.
Kris
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