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Make benchmark results more stable by running tests 5 times. #8863

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merged 1 commit into from
Oct 31, 2025
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Make benchmark results more stable by running tests 5 times. #8863

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14 changes: 8 additions & 6 deletions src/HotChocolate/AspNetCore/benchmarks/k6/run-and-collect.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ NC='\033[0m' # No Color

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
OUTPUT_FILE="${1:-$SCRIPT_DIR/performance-data.json}"
NUM_RUNS=3
NUM_RUNS=5

echo -e "${BLUE}========================================${NC}"
echo -e "${BLUE}k6 Performance Test Collector${NC}"
Expand All @@ -21,24 +21,26 @@ echo "Output file: $OUTPUT_FILE"
echo "Running each test ${NUM_RUNS} times to reduce variance"
echo ""

# Function to calculate median of 3 values
# Function to calculate median from multiple values
calculate_median() {
local values=("$@")
local count=${#values[@]}
# Sort the values
IFS=$'\n' sorted=($(sort -n <<<"${values[*]}"))
unset IFS
# Return the middle value
echo "${sorted[1]}"
# Return the middle value (for odd number of values)
local middle_index=$(( (count - 1) / 2 ))
echo "${sorted[$middle_index]}"
}

# Run single-fetch test 3 times
# Run single-fetch test multiple times
echo -e "${BLUE}Running Single Fetch Test (${NUM_RUNS} runs)...${NC}"
for i in $(seq 1 $NUM_RUNS); do
echo -e "${YELLOW} Run $i/$NUM_RUNS${NC}"
k6 run --summary-export=/tmp/single-fetch-summary-${i}.json "$SCRIPT_DIR/single-fetch.js"
done

# Run dataloader test 3 times
# Run dataloader test multiple times
echo -e "${BLUE}Running DataLoader Test (${NUM_RUNS} runs)...${NC}"
for i in $(seq 1 $NUM_RUNS); do
echo -e "${YELLOW} Run $i/$NUM_RUNS${NC}"
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