If I run a command with a lot of output in tmux, but decide to cancel it with Ctrl-C, there's a 10-15 second lag before it stops. However, if I do the same thing outside of tmux, it stops immediately. Why is this, and is it fixable?
In practice, this issue comes up when I'm doing
grep -R on a large directory and my search isn't constrained enough. A workaround would be to pipe the result to
wc first to make sure the output isn't too long, but that's just another step I'd like to avoid.
- This has the same behavior in Gnome Terminal, uxterm, st, and a plain virtual terminal (e.g., ctrl-alt-f2), but the delay is less in the plain virtual terminal.
- I'm not the only one: http://firstname.lastname@example.org/msg01569.html
- The delay is longer if my terminal window is larger. For a fullscreen terminal, it takes about 15 seconds to stop
grep -R(no other arguments) in a cluttered home directory. For a 80×25 character terminal, it stops almost immediately.