(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?
If anyone has any thoughts, I'd definitely appreciate them. Thanks!
-- Ned Ruggeri
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