Any recommendations for low-impact tools I can use to better understand the activity of expired processes?
Sar?
Yeah, so this is the best one I’ve seen so far.
I’ve just installed it, but I’m stumped on the documentation on how to find the name of a high-load process from 10 mins ago.
Install and start the monitoring
sudo pacman -S sysstat
sudo systemctl {enable,start} sysstat
Find what processes were running 10 minutes ago
(first wait 10 minutes)
sar -P ALL -f /var/log/sa/sa$(date +%d -d '10 minutes ago')
nothing happens.
Sudo cpupower -c all frequency-set --max 0.8GHz No more spikes 😎👍👌
Sounds like atop is exactly what you need.