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More details about the tmux 2.0 regression


Hi,

I had a nice discussion with tmux maintainers over at
https://github.com/tmux/tmux/issues/13 about the tmux 2.0 regression
on Cygwin.

Long story short, tmux is trying to read /proc/<pid>/cmdline and
/proc/<pid>/cwd for various reasons and for non-Cygwin programs this
is quite slow. You can reproduce this easily run cmd.exe inside bash
and try to

cat /proc/<pid of cmd.exe>/cmdline

and see it takes a second long to print "<defunct>". Would be nice to
fix this slowdown so tmux can be speedy again. For now setting
automatic-rename to off

set -g automatic-rename off

helps somewhat.

Regards,
ismail

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