diff --git a/test/nvme/perf/common.sh b/test/nvme/perf/common.sh
index 46d1cc85c..2ce01909e 100755
--- a/test/nvme/perf/common.sh
+++ b/test/nvme/perf/common.sh
@@ -324,62 +324,33 @@ function bc() {
 }
 
 function get_results() {
+	local iops bw stdev
+	local p90_lat p99_lat p99_99_lat
+	local mean_slat mean_clat
 	local reads_pct
 	local writes_pct
 
-	reads_pct=$(bc "$2 / 100")
+	reads_pct=$(bc "$1 / 100")
 	writes_pct=$(bc "1 - $reads_pct")
-	case "$1" in
-		iops)
-			iops=$(jq -r '.jobs[] | .read.iops + .write.iops' $TMP_RESULT_FILE)
-			echo $iops
-			;;
-		mean_lat_usec)
-			mean_lat=$(jq -r ".jobs[] | (.read.lat_ns.mean * $reads_pct + .write.lat_ns.mean * $writes_pct)/1000" $TMP_RESULT_FILE)
-			echo $mean_lat
-			;;
-		p90_lat_usec)
-			p90_lat=$(jq -r ".jobs[] | (.read.clat_ns.percentile.\"90.000000\"  // 0 * $reads_pct + .write.clat_ns.percentile.\"90.000000\" // 0 * $writes_pct)/1000" $TMP_RESULT_FILE)
-			echo $p90_lat
-			;;
-		p99_lat_usec)
-			p99_lat=$(jq -r ".jobs[] | (.read.clat_ns.percentile.\"99.000000\"  // 0 * $reads_pct + .write.clat_ns.percentile.\"99.000000\" // 0 * $writes_pct)/1000" $TMP_RESULT_FILE)
-			echo $p99_lat
-			;;
-		p99_99_lat_usec)
-			p99_99_lat=$(jq -r ".jobs[] | (.read.clat_ns.percentile.\"99.990000\" // 0 * $reads_pct + .write.clat_ns.percentile.\"99.990000\" // 0 * $writes_pct)/1000" $TMP_RESULT_FILE)
-			echo $p99_99_lat
-			;;
-		stdev_usec)
-			stdev=$(jq -r ".jobs[] | (.read.clat_ns.stddev * $reads_pct + .write.clat_ns.stddev * $writes_pct)/1000" $TMP_RESULT_FILE)
-			echo $stdev
-			;;
-		mean_slat_usec)
-			mean_slat=$(jq -r ".jobs[] | (.read.slat_ns.mean * $reads_pct + .write.slat_ns.mean * $writes_pct)/1000" $TMP_RESULT_FILE)
-			echo $mean_slat
-			;;
-		mean_clat_usec)
-			mean_clat=$(jq -r ".jobs[] | (.read.clat_ns.mean * $reads_pct + .write.clat_ns.mean * $writes_pct)/1000" $TMP_RESULT_FILE)
-			echo $mean_clat
-			;;
-		bw_Kibs)
-			bw=$(jq -r ".jobs[] | (.read.bw + .write.bw)" $TMP_RESULT_FILE)
-			echo $bw
-			;;
-	esac
+
+	iops=$(jq -r '.jobs[] | .read.iops + .write.iops' $TMP_RESULT_FILE)
+	bw=$(jq -r ".jobs[] | (.read.bw + .write.bw)" $TMP_RESULT_FILE)
+	mean_lat=$(jq -r ".jobs[] | (.read.lat_ns.mean * $reads_pct + .write.lat_ns.mean * $writes_pct)/1000" $TMP_RESULT_FILE)
+	p90_lat=$(jq -r ".jobs[] | (.read.clat_ns.percentile.\"90.000000\"  // 0 * $reads_pct + .write.clat_ns.percentile.\"90.000000\" // 0 * $writes_pct)/1000" $TMP_RESULT_FILE)
+	p99_lat=$(jq -r ".jobs[] | (.read.clat_ns.percentile.\"99.000000\"  // 0 * $reads_pct + .write.clat_ns.percentile.\"99.000000\" // 0 * $writes_pct)/1000" $TMP_RESULT_FILE)
+	p99_99_lat=$(jq -r ".jobs[] | (.read.clat_ns.percentile.\"99.990000\" // 0 * $reads_pct + .write.clat_ns.percentile.\"99.990000\" // 0 * $writes_pct)/1000" $TMP_RESULT_FILE)
+	stdev=$(jq -r ".jobs[] | (.read.clat_ns.stddev * $reads_pct + .write.clat_ns.stddev * $writes_pct)/1000" $TMP_RESULT_FILE)
+	mean_slat=$(jq -r ".jobs[] | (.read.slat_ns.mean * $reads_pct + .write.slat_ns.mean * $writes_pct)/1000" $TMP_RESULT_FILE)
+	mean_clat=$(jq -r ".jobs[] | (.read.clat_ns.mean * $reads_pct + .write.clat_ns.mean * $writes_pct)/1000" $TMP_RESULT_FILE)
+
+	echo "$iops $bw $mean_lat $p90_lat $p99_lat $p99_99_lat $stdev $mean_slat $mean_clat"
 }
 
 function get_bdevperf_results() {
-	case "$1" in
-		iops)
-			iops=$(grep Total $TMP_RESULT_FILE | awk -F 'Total' '{print $2}' | awk '{print $2}')
-			echo $iops
-			;;
-		bw_Kibs)
-			bw_KBs=$(grep Total $TMP_RESULT_FILE | awk -F 'Total' '{print $2}' | awk '{print $4}')
-			bc "$bw_KBs * 1024"
-			;;
-	esac
+	local iops
+	local bw_MBs
+	read -r iops bw_MBs <<< $(grep Total $TMP_RESULT_FILE | tr -s " " | awk -F ":| " '{print $5" "$7}')
+	echo "$iops $(bc "$bw_MBs * 1024")"
 }
 
 function get_nvmeperf_results() {
diff --git a/test/nvme/perf/run_perf.sh b/test/nvme/perf/run_perf.sh
index 0da4e3073..f5fae0538 100755
--- a/test/nvme/perf/run_perf.sh
+++ b/test/nvme/perf/run_perf.sh
@@ -272,8 +272,9 @@ mean_clat_disks_usec=0
 for ((j = 0; j < REPEAT_NO; j++)); do
 	if [ $PLUGIN = "spdk-perf-bdev" ]; then
 		run_bdevperf > $TMP_RESULT_FILE
-		iops_disks=$(bc "$iops_disks + $(get_bdevperf_results iops)")
-		bw=$(bc "$bw + $(get_bdevperf_results bw_Kibs)")
+		read -r iops bandwidth <<< $(get_bdevperf_results)
+		iops_disks=$(bc "$iops_disks + $iops")
+		bw=$(bc "$bw + $bandwidth")
 		cp $TMP_RESULT_FILE $result_dir/perf_results_${MIX}_${PLUGIN}_${NO_CORES}cpus_${DATE}_${k}_disks_${j}.output
 	elif [ $PLUGIN = "spdk-perf-nvme" ]; then
 		run_nvmeperf $DISKNO > $TMP_RESULT_FILE
@@ -305,15 +306,18 @@ for ((j = 0; j < REPEAT_NO; j++)); do
 		elif [[ $RW = *"write"* ]]; then
 			rwmixread=0
 		fi
-		iops_disks=$(bc "$iops_disks + $(get_results iops $rwmixread)")
-		mean_lat_disks_usec=$(bc "$mean_lat_disks_usec + $(get_results mean_lat_usec $rwmixread)")
-		p90_lat_disks_usec=$(bc "$p90_lat_disks_usec + $(get_results p90_lat_usec $rwmixread)")
-		p99_lat_disks_usec=$(bc "$p99_lat_disks_usec + $(get_results p99_lat_usec $rwmixread)")
-		p99_99_lat_disks_usec=$(bc "$p99_99_lat_disks_usec + $(get_results p99_99_lat_usec $rwmixread)")
-		stdev_disks_usec=$(bc "$stdev_disks_usec + $(get_results stdev_usec $rwmixread)")
-		mean_slat_disks_usec=$(bc "$mean_slat_disks_usec + $(get_results mean_slat_usec $rwmixread)")
-		mean_clat_disks_usec=$(bc "$mean_clat_disks_usec + $(get_results mean_clat_usec $rwmixread)")
-		bw=$(bc "$bw + $(get_results bw_Kibs $rwmixread)")
+
+		read -r iops bandwidth mean_lat_usec p90_lat_usec p99_lat_usec p99_99_lat_usec \
+			stdev_usec mean_slat_usec mean_clat_usec <<< $(get_results $rwmixread)
+		iops_disks=$(bc "$iops_disks + $iops")
+		mean_lat_disks_usec=$(bc "$mean_lat_disks_usec + $mean_lat_usec")
+		p90_lat_disks_usec=$(bc "$p90_lat_disks_usec + $p90_lat_usec")
+		p99_lat_disks_usec=$(bc "$p99_lat_disks_usec + $p99_lat_usec")
+		p99_99_lat_disks_usec=$(bc "$p99_99_lat_disks_usec + $p99_99_lat_usec")
+		stdev_disks_usec=$(bc "$stdev_disks_usec + $stdev_usec")
+		mean_slat_disks_usec=$(bc "$mean_slat_disks_usec + $mean_slat_usec")
+		mean_clat_disks_usec=$(bc "$mean_clat_disks_usec + $mean_clat_usec")
+		bw=$(bc "$bw + $bandwidth")
 
 		cp $TMP_RESULT_FILE $result_dir/perf_results_${MIX}_${PLUGIN}_${NO_CORES}cpus_${DATE}_${k}_disks_${j}.json
 		cp $testdir/config.fio $result_dir/config_${MIX}_${PLUGIN}_${NO_CORES}cpus_${DATE}_${k}_disks_${j}.fio