Native process monitoring tool

Features

Real-Time Monitoring:

Updates every second with the latest CPU and memory stats.

Dynamic Terminal Charts:

Displays live line charts for CPU and memory usage naively in the terminal.

Process Details:

Lists PID, command, CPU, and memory usage for the monitored process.

Usage

It will ask for PID or process name after the start command.

npm install
npm run start

Tip

It's worth fine-tuning the renderAsciiLineChart method's third parameter, so you can see something on the charts.

Result

Alternativ options

Record data

echo "Time,CPU,MEM" > usage_data.csv
while true; do
    stats=$(ps -p <PID> -o %cpu,%mem | tail -1)
    echo "$(date +%H:%M:%S),$stats" >> usage_data.csv
    sleep 1
done

Install gnuplot

brew install gnuplot

Displaying

create plot.gnu file

set datafile separator ","
set title "CPU and Memory Usage"
set xlabel "Time"
set ylabel "Usage (%)"
set xdata time
set timefmt "%H:%M:%S"
set format x "%H:%M"
plot "usage_data.csv" using 1:2 title "CPU" with lines, \
     "usage_data.csv" using 1:3 title "Memory" with lines

and run it

gnuplot -p plot.gnu

Result