core_affinity.sh

#!/bin/bash
# Set core affinity for redis and dynomite processes
#

# Requires setting the EC2 Instance type as ENV variable.
# If Dynomite is used outside of AWS environment,
# the core affinity script can be configured accordingly.
echo "$EC2_INSTANCE_TYPE"

if [ "$EC2_INSTANCE_TYPE" == "r3.xlarge" ]; then
   dynomite_pid=`pgrep -f $DYN_DIR/bin/dynomite`
   echo "dynomite pid: $dynomite_pid"
   taskset -pac 2,3 $dynomite_pid

   redis_pid=`ps -ef | grep 22122 | grep redis | awk -F' '  '{print $2}'`
   echo "redis pid: $redis_pid"
   taskset -pac 1 $redis_pid

else

   dynomite_pid=`pgrep -f $DYN_DIR/bin/dynomite`
   echo "dynomite pid: $dynomite_pid"
   taskset -pac 2,5,6 $dynomite_pid

   redis_pid=`ps -ef | grep 22122 | grep redis | awk -F' '  '{print $2}'`
   echo "redis pid: $redis_pid"
   taskset -pac 3,7 $redis_pid

fi