process profiling with graphs (bash, gnuplot)

clean.sh

for log in *-anary.log; do awk '$0<200' <$log | gnuplot -e "set term png; set yrange [0:200]; unset autoscale y; set output \"$(basename $log .log).trimmed.png\";plot '-' with boxes"; done

measure.sh

pattern=anary;
end=$((SECONDS+60));
prefix=$(date +%s)

LOGFILE="$prefix-$pattern.log"
: > $LOGFILE # truncate
while [ $SECONDS -lt $end ]; do
  for pid in $(pgrep -f $pattern); do
    ps -p $pid -o %cpu= ;
  done | perl -nle '$sum += $_ } END { print $sum' >> $LOGFILE;
  sleep 0.5;
done;
gnuplot<<<"set term png;set output \"$prefix-$pattern.png\";plot \"$LOGFILE\" with boxes"

Example of the raw image:

Example of "cleaned file":