Update regression_test.sh to run multireadrandom benchmark (#7802)

Summary:
Update the regression_test.sh script to run the multireadrandom benchmark.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7802

Reviewed By: zhichao-cao

Differential Revision: D25685482

Pulled By: anand1976

fbshipit-source-id: ef2973b551a1bbdbce198a0adf29fc277f3e65e2

tools/regression_test.sh

@@ -142,6 +142,7 @@ function main {
       run_db_bench "deleterandom" $((NUM_KEYS / 10 / $NUM_THREADS))
       run_db_bench "seekrandom"
       run_db_bench "seekrandomwhilewriting"
+      run_db_bench "multireadrandom" 
   fi
 
   cleanup_test_directory $TEST_ROOT_DIR
@@ -192,6 +193,8 @@ function init_arguments {
   DELETE_TEST_PATH=${DELETE_TEST_PATH:-0}
   SEEK_NEXTS=${SEEK_NEXTS:-10}
   SEED=${SEED:-$( date +%s )}
+  MULTIREAD_BATCH_SIZE=${MULTIREAD_BATCH_SIZE:-128}
+  MULTIREAD_STRIDE=${MULTIREAD_STRIDE:-12}
 }
 
 # $1 --- benchmark name
@@ -240,7 +243,10 @@ function run_db_bench {
       --max_background_compactions=$MAX_BACKGROUND_COMPACTIONS \
       --num_high_pri_threads=$NUM_HIGH_PRI_THREADS \
       --num_low_pri_threads=$NUM_LOW_PRI_THREADS \
-      --seed=$SEED) 2>&1"
+      --seed=$SEED \
+      --multiread_batched=true \
+      --batch_size=$MULTIREAD_BATCH_SIZE \
+      --multiread_stride=$MULTIREAD_STRIDE) 2>&1"
   ps_cmd="ps aux"
   if ! [ -z "$REMOTE_USER_AT_HOST" ]; then
     echo "Running benchmark remotely on $REMOTE_USER_AT_HOST"