ps.sh maxes out CPU on macOS after waking from sleep

[bagonyi]

On macOS, after the computer wakes from sleep, multiple ps.sh processes can run and max out the CPU. This happens once every few weeks after I open the lid of my Macbook. The remedy is to kill the tmux server, and restart the terminal. But this usually results in either the tmux sessions and/or the window names being lost.

[Logs] 0:zsh 1:zsh 2:zsh 3:zsh 4:zsh- 5:zsh*

In the Logs session I had 6 windows open, each with a custom name, but now, after restarting the tmux server, I am left with nameless windows.

To restore the window names, I have to look for the most recent non-corrupted tmux_resurrect_*.txt in ~/.tmux/resurrect and update the last symlink to it:

tmux kill-server
cd ~/.tmux/resurrect
ln -sf tmux_resurrect_20250701T210804.txt last
tmux

My ~/.tmux/plugins/tmux-resurrect is on cff343cf9e81983d3da0c8562b01616f12e8d548.

---

Gemini's opinion (although I couldn't find any supporting evidence online):

This is likely due to the ps command hanging, which is a known issue on macOS.

A potential fix is to add the -c flag to the ps command in save_command_strategies/ps.sh like so:

--- a/save_command_strategies/ps.sh
+++ b/save_command_strategies/ps.sh
@@ -13,7 +13,7 @@
 
 full_command() {
-	ps -ao "ppid,args" |
+	ps -cao "ppid,args" |
 		sed "s/^ *//" |
 		grep "^${PANE_PID}" |
 		cut -d' ' -f2-
}

[bagonyi]

It happened again:

htop's view filtered to show processes containing the word "tmux":

$ ps aux
USER               PID  %CPU %MEM      VSZ    RSS   TT  STAT STARTED      TIME COMMAND
root             72436  81.3  0.0 412267584   5440   ??  R     7:57a.m.   0:02.42 (ps)
root             72511  80.7  0.0 412267584   5456   ??  R     7:57a.m.   0:01.46 ps -ao ppid,args
root             72540  79.5  0.0 412266560   4768   ??  R     7:57a.m.   0:01.14 ps -ao ppid,args
root             72495  78.5  0.0 412267584   4896   ??  R     7:57a.m.   0:01.67 ps -ao ppid,args
root             72454  78.2  0.0 412267584   5408   ??  R     7:57a.m.   0:02.23 (ps)
root             72534  78.1  0.0 412267584   5456   ??  R     7:57a.m.   0:01.23 ps -ao ppid,args
root             72466  77.7  0.0 412267584   5424   ??  S     7:57a.m.   0:02.10 (ps)
root             72588  75.0  0.0 412266560   5408   ??  R     7:57a.m.   0:00.77 ps -ao ppid,args
root             72604  71.9  0.0 412250176   5232   ??  R     7:57a.m.   0:00.59 ps -ao ppid,args
root             72610  65.5  0.0 412265536   5232   ??  R     7:57a.m.   0:00.44 ps -ao ppid,args
root             72646  38.5  0.0 411574336   4272   ??  R     7:57a.m.   0:00.17 ps -ao ppid,args
root             72657  33.5  0.0 411444288   4224   ??  R     7:57a.m.   0:00.14 ps -ao ppid,args
root             72671  31.9  0.0 411424832   3824   ??  R     7:57a.m.   0:00.14 ps -ao ppid,args