Revert "Support overriding CPU core location"

This reverts commit 30ca6df2.

experiments/extra.shared.sh

 perf_stat_start() {
     local opt_args=""
     if [ "$PERF_STAT_NO_CORES" != "true" ]; then
-        if [ ! -z "$OVERRIDE_CPUS" ]; then
-            opt_args="$opt_args -C $OVERRIDE_CPUS"
-        else
-            opt_args="$opt_args -C 0-$((THREADS - 1))"
-        fi
+         opt_args="$opt_args -C 0-$((THREADS - 1))"
     fi
     $PERF stat $PERF_EXTRA_ARGS $opt_args -e LLC-load-misses:u,LLC-load-misses:k,LLC-loads:u,LLC-loads:k,LLC-store-misses:u,LLC-store-misses:k,LLC-stores:u,LLC-stores:k,task-clock,cycles:u,cycles:k,instructions:u,instructions:k -o "$DATA_OUT/stat_$1$EXP_AUX_SUFFIX.txt" &
     PERF_STAT_PID=$!
@@ -18,11 +14,7 @@ perf_stat_stop() {
 perf_record_start() {
     local opt_args=""
     if [ "$PERF_STAT_NO_CORES" != "true" ]; then
-        if [ ! -z "$OVERRIDE_CPUS" ]; then
-            opt_args="$opt_args -C $OVERRIDE_CPUS"
-        else
-            opt_args="$opt_args -C 0-$((THREADS - 1))"
-        fi
+         opt_args="$opt_args -C 0-$((THREADS - 1))"
     fi
 
     pushd "$DATA_OUT"

experiments/memcached.shared.sh

@@ -28,12 +28,8 @@ cleanup_memcached() {
 
 start_memcached() {
     echo "Starting memcached"
-    local cpus="0-$((THREADS - 1 - THREAD_TAIL_OFFSET))"
-    if [ ! -z "$OVERRIDE_CPUS" ]; then
-        cpus="$OVERRIDE_CPUS"
-    fi
-    echo "taskset -c $OVERRIDE_CPUS $MEMCACHED $MEMCACHED_ARGS -u root -t $((THREADS - THREAD_TAIL_OFFSET)) -b 16384 -c 32768 -m 10240 -o hashpower=24,no_lru_maintainer,no_lru_crawler" 
-    taskset -c $OVERRIDE_CPUS $MEMCACHED $MEMCACHED_ARGS -u root -t $((THREADS - THREAD_TAIL_OFFSET)) -b 16384 -c 32768 -m 10240 -o hashpower=24,no_lru_maintainer,no_lru_crawler &
+    echo "taskset -c 0-$((THREADS - 1 - THREAD_TAIL_OFFSET)) $MEMCACHED $MEMCACHED_ARGS -u root -t $((THREADS - THREAD_TAIL_OFFSET)) -b 16384 -c 32768 -m 10240 -o hashpower=24,no_lru_maintainer,no_lru_crawler" 
+    taskset -c 0-$((THREADS - 1 - THREAD_TAIL_OFFSET)) $MEMCACHED $MEMCACHED_ARGS -u root -t $((THREADS - THREAD_TAIL_OFFSET)) -b 16384 -c 32768 -m 10240 -o hashpower=24,no_lru_maintainer,no_lru_crawler &
     MEMCACHED_PID=$!
     if [ "$PERF_STAT_ONLY_MEMCACHED" == "true" ]; then
         PERF_EXTRA_ARGS_ORIG="$PERF_EXTRA_ARGS"

run.sh

@@ -38,11 +38,6 @@ while [[ $# -gt 0 ]]; do
             shift
             shift
             ;;
-        --override-cpus)
-            OVERRIDE_CPUS="$2"
-            shift
-            shift
-            ;;
         --fstack)
             FSTACK=true
             USERSTACK=true
@@ -127,9 +122,6 @@ if [ "${#EXTRA_TUNING[@]}" -gt 0 ]; then
         EXPERIMENT_NAME="$EXPERIMENT_NAME.$tuning"
     done
 fi
-if [ ! -z "$OVERRIDE_CPUS" ]; then
-    EXPERIMENT_NAME="$EXPERIMENT_NAME.override_cpus$OVERRIDE_CPUS"
-fi
 if [ "$FSTACK" == "true" ]; then
     EXPERIMENT_NAME="$EXPERIMENT_NAME.fstack"
 fi