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#! /bin/sh
if [ $# -lt 1 ]; then
echo "usage $0 cmd or $0 -p PID";
exit 1;
fi
if [ "$1X" = "-pX" ]; then
PID=$2
else
$1 & PID=$!
fi
STATUS_FILE="/proc/$PID/status"
LOG_FILE="${PID}.dat"
PLOT_FILE="${PID}.plt"
draw() {
cat << EOF >$PLOT_FILE
set term postscript
set output "$PID.ps"
plot '${LOG_FILE}' using 1:2 with lines title 'VmSize', \
'${LOG_FILE}' using 1:3 with lines title 'VmRss', \
'${LOG_FILE}' using 1:4 with lines title 'VmLib'
set term x11
replot
EOF
gnuplot -persist $PLOT_FILE
exit 0
}
trap draw SIGINT
CPT=0
while [ 1 ]; do
if [ ! -e $STATUS_FILE ]; then break; fi
awk "BEGIN{ vmSize=0; vmRss=0; vmLib=0; }
/VmSize/ {vmSize = \$2 }
/VmRSS/ { vmRss = \$2 }
/VmLib/ { vmLib = \$2 }
END { print $CPT\" \"vmSize\" \"vmRss\" \"vmLib }
" $STATUS_FILE >> $LOG_FILE
sleep 1
((CPT=CPT+1));
done
draw
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