test(benchmark.sh): replaced time with perf stat

1 files changed, 5 insertions, 11 deletions

diff --git a/test/benchmark.sh b/test/benchmark.sh
index d7c69f0..b8bc156 100755
--- a/test/benchmark.sh
+++ b/test/benchmark.sh
@@ -5,7 +5,7 @@ SRC_DIR="../src"
 SORTER="$SRC_DIR/sorter"
 ALGORITHMS=("isort" "qsort")
 
-OUTPUT_STRING="type,size,real,user,sys"
+OUTPUT_STRING="type,size,time"
 
 for TEST_FILE in "$DATA_DIR"/*; do
     FILE_NAME=$(basename "$TEST_FILE")
@@ -14,13 +14,8 @@ for TEST_FILE in "$DATA_DIR"/*; do
 
         echo "Benchmarking $FILE_NAME using $ALGORITHM ..."
 
-        # Run the command and capture timing
-        TIME_OUTPUT=$({ time $SORTER -a "$ALGORITHM" "$TEST_FILE" >/dev/null; } 2>&1)
-
-        # Extract real, user, sys in seconds
-        REAL=$(echo "$TIME_OUTPUT" | awk '/real/ {split($2,a,"m"); split(a[2],b,"s"); print a[1]*60 + b[1]}')
-        USER=$(echo "$TIME_OUTPUT" | awk '/user/ {split($2,a,"m"); split(a[2],b,"s"); print a[1]*60 + b[1]}')
-        SYS=$(echo "$TIME_OUTPUT" | awk '/sys/  {split($2,a,"m"); split(a[2],b,"s"); print a[1]*60 + b[1]}')
+        time=$(perf stat -e task-clock $SORTER -a "$ALGORITHM" "$TEST_FILE" >/dev/null 2> perf_out.txt)
+        elapsed=$(grep "seconds time elapsed" perf_out.txt | awk '{print $1}')
 
         # Remove prefix and suffix
         # type_size_n.tsv
@@ -28,11 +23,10 @@ for TEST_FILE in "$DATA_DIR"/*; do
         rest="${FILE_NAME#*_}"               # after first _
         TEST_SIZE="${rest%%_*}"              # before next _
 
-        # Add entry to JSON string
         OUTPUT_STRING="$OUTPUT_STRING
-$ALGORITHM"_"$TYPE,$TEST_SIZE,$REAL,$USER,$SYS"
+$ALGORITHM"_"$TYPE,$TEST_SIZE,$elapsed"
     done
 done
-
+rm perf_out.txt
 # Write to file
 echo "$OUTPUT_STRING" > benchmark_results.csv