track.sh

#!/bin/bash
## usage
# ./track <PID> <logname>


## info
# <logname> will be saved in /tmp/ (logging format is simple csv)
# track the memory usage of a process ID + zram usage
# zramOD_B is original datasize in bytes
# zramCD_B is compressed datasize in bytes
# averageQueue are the number of R processes in the last 60 seconds

PID=$1
echo "time, totalMemory_kB, dataStack_kB, memAvailable_kB, zramOD_B, zramCD_B, swapCache_kB, averageQueue" > /tmp/$2

while true
do
    time=$(date +%s)
    totalMemory=$(awk '{ print $1 }' /proc/$PID/statm)
    dataStack=$(awk '{ print $6 }' /proc/$PID/statm)
    memAvailable=$(grep MemAvailable /proc/meminfo| awk '{ print $2 }')
    zramOD=$(cat /sys/block/zram0/orig_data_size)
    zramCD=$(cat /sys/block/zram0/compr_data_size)
    swapCache=$(grep SwapCached: /proc/meminfo| awk '{ print $2 }')
    averageQueue=$(awk '{ print $1 }' /proc/loadavg)
    
    echo $time "," $totalMemory "," $dataStack "," $memAvailable "," $zramOD "," $zramCD "," $swapCache "," $averageQueue >> /tmp/$2

    sleep 1
done