Shell Programming and Scripting

CPUS=( 1 2 3 0 1 2 3 0 )

PIDS=( `top -b -n 1 | grep ds_i | egrep '[SDR]   ( [0-9]|1[1-4]) ' | sed -e "s/^ *//" -e "s/ .*$//"` )

# Processes with 14% or less usage
for (( e = 0 ; e < ${#PIDS[@]} ; e++ ))
do
taskset -cp 0-3 ${PIDS[$e]}
chrt -o -p 0 ${PIDS[$e]}
done

unset PIDS


PIDS=( `top -b -n 1 | grep ds_i | egrep '[SDR]   ([1][5-9]|[2-9][0-9]) ' | sed -e "s/^ *//" -e "s/ .*$//"` )
# Processes with 15%+ CPU usage
for (( p = 0 ; p < ${#PIDS[@]} ; p++ ))
do
AFF=`taskset -cp ${PIDS[$p]} | sed -e "s/.* current affinity list: //"`

len=`echo $AFF | wc -c`
len=`expr $len - 1`

if [ $len -lt "2" ]
then

        if [ $AFF -lt "4" ]
        then
                for (( e = 0 ; e < ${#CPUS[@]} ; e++ ))
                do

                        if [[ $AFF == ${CPUS[$e]} ]]
                        then
                        unset CPUS[$e] #Remove used CPU from array
                        CPUS=( ${CPUS[*]} )
                        unset PIDS[$p] #Remove PID from array
                        break
                        fi
                done
        fi
fi
done

PIDS=( ${PIDS[*]} )

for (( p = 0 ; p < ${#PIDS[@]} ; p++ ))
do

taskset -cp ${CPUS[0]} ${PIDS[$p]}
chrt -f -p 59 ${PIDS[$p]}
unset CPUS[0]
CPUS=( ${CPUS[*]} )

done

PIDS=( `top -b -n 1 | grep ds_i | egrep '[SDR]   ( [0-9]|1[1-4]) ' | sed -e "s/^ *//" -e "s/ .*$//"` )

PIDS=( `top -b -n 1 | grep ds_i | egrep '[SDR]   ([1][5-9]|[2-9][0-9]) ' | sed -e "s/^ *//" -e "s/ .*$//"` )

top -b -n 1

5555
6666
7777