diff --git a/scripts/perf/pm/collect-bmc-pm b/scripts/perf/pm/collect-bmc-pm
index 209a93ae3..0f9b1c213 100755
--- a/scripts/perf/pm/collect-bmc-pm
+++ b/scripts/perf/pm/collect-bmc-pm
@@ -329,8 +329,10 @@ dump_readings() {
 			((total += ${reading%.*}))
 		done
 		avg=$((total / ${#readings[@]}))
+
+		readings+=("Total: ${#readings[@]}")
 		printf '%u\n' "$avg" > "$output_dir/${prefix:+${prefix}_}avg_${sensor}.bmc.pm.txt"
-		printf '%u\n' "${readings[@]}" > "$output_dir/${prefix:+${prefix}_}all_${sensor}.bmc.pm.txt"
+		printf '%s\n' "${readings[@]}" > "$output_dir/${prefix:+${prefix}_}all_${sensor}.bmc.pm.txt"
 		printf 'Dumped avg to %s\n' "$output_dir/${prefix:+${prefix}_}avg_${sensor}.bmc.pm.txt" >&2
 		printf 'Dumped all to %s\n' "$output_dir/${prefix:+${prefix}_}all_${sensor}.bmc.pm.txt" >&2
 	done