Usage ./graph.sh
It requires having gnuplot installed
#!/bin/env bash | |
# https://stackoverflow.com/questions/7998302/graphing-a-processs-memory-usage | |
# trap ctrl-c and call ctrl_c() | |
trap ctrl_c INT | |
LOG=$(mktemp) | |
SCRIPT=$(mktemp) | |
IMAGE=$(mktemp) | |
echo "Output to LOG=$LOG and SCRIPT=$SCRIPT and IMAGE=$IMAGE" | |
cat >$SCRIPT <<EOL | |
set term png small size 800,600 | |
set output "$IMAGE" | |
set ylabel "RSS" | |
set y2label "VSZ" | |
set ytics nomirror | |
set y2tics nomirror in | |
set yrange [0:*] | |
set y2range [0:*] | |
plot "$LOG" using 3 with lines axes x1y1 title "RSS", "$LOG" using 2 with lines axes x1y2 title "VSZ" | |
EOL | |
function ctrl_c() { | |
gnuplot $SCRIPT | |
xdg-open $IMAGE | |
exit 0; | |
} | |
while true; do | |
ps -p $1 -o pid=,vsz=,rss= | tee -a $LOG | |
sleep 1 | |
done |
Great work. I made a few changes for some things I am working on and here are the results:
I found that ps -p
required the PID so I used pidof
to get that. I added waiting so you can fire off the script before the executable runs and it will wait for it before beginning to log. Also added a command line argument for saving out the output file to somewhere other than mktemp
. I removed tee
and used output redirection because tee
output to both standard out and to the log file, just to clean things up. Also the loop ends, not on ctrl-C
but when the executable finishes running so that the whole lifetime is represented in the plot. Also implemented @will3216's suggestion because -o pid=,vsz=,rss=
didn't work for me on CentOS 7 so I used the more generic syntax. Then I cleaned up the plot and used the same scale for both Real Memory and Virtual Memory and used the colors from htop
.
#!/bin/env bash
# https://stackoverflow.com/questions/7998302/graphing-a-processs-memory-usage
# https://gist.github.com/nicolasazrak/32d68ed6c845a095f75f037ecc2f0436
if [ $# -lt 1 ] || [ $# -gt 2 ]
then
echo "graph_memory.sh requires 1 or 2 command line arguments"
echo "Usage:"
echo " graph_memory.sh <process name> [PNG image path]"
exit -1
fi
LOG=$(mktemp)
SCRIPT=$(mktemp)
if [ $# -eq 1 ]
then
IMAGE=$(mktemp)
else
IMAGE=$2
fi
echo "Output to LOG=$LOG and SCRIPT=$SCRIPT and IMAGE=$IMAGE"
cat >$SCRIPT <<EOL
set term png small size 1200,900
set output "$IMAGE"
set key left box
set ylabel "Memory (MB)"
set xlabel "Seconds"
set grid ytics lc rgb "#bbbbbb" lw 1 lt 0
set grid xtics lc rgb "#bbbbbb" lw 1 lt 0
set ytics nomirror
set yrange [0:*]
plot "$LOG" using (\$2/1024) with filledcurves title "Virtual Memory" lc rgb "#00bf9b0b", "$LOG" using (\$3/1024) with filledcurves title "Real Memory" lc rgb "#004d950f"
EOL
echo "Waiting for $1 to start..."
PID=`pidof $1`
while [ -z $PID ]
do
sleep 0.1
PID=`pidof $1`
done
echo "Logging $1 info..."
SAVE_PID=$PID
#echo "$SAVE_PID 0 0" >> $LOG
echo "$SAVE_PID 0 0" >> $LOG
while true
do
# Drop out when the process doesn't exist anymore
if [ -z $PID ]
then
echo "Rendering graph..."
echo "$SAVE_PID 0 0" >> $LOG
gnuplot $SCRIPT > /dev/null
xdg-open $IMAGE > /dev/null &
exit 0
fi
# Log the process information
ps -p $PID -o pid= -o vsz= -o rss= >> $LOG
sleep 1
PID=`pidof $1`
done
If you replace:
with:
It will work out of the box with more systems. Thanks for making this!