measure.sh

#!/bin/bash
# =====================================================================
# measure.sh
# 정적 리소스 응답 시간 측정 - 5회 평균
# =====================================================================
# 사용법:
#   ./measure.sh https://your-domain.example/resources/css/main.css [횟수]
#
# 출력:
#   각 회차 응답 시간 + 평균

set -u

URL="${1:-}"
COUNT="${2:-5}"

if [ -z "$URL" ]; then
    echo "사용법: $0 <URL> [횟수=5]"
    exit 1
fi

echo "================================================================"
echo " 응답 시간 측정"
echo " URL: $URL"
echo " 횟수: $COUNT"
echo " 일시: $(date '+%Y-%m-%d %H:%M:%S')"
echo "================================================================"

TOTAL=0
SKIP=1  # 첫 회 워밍업 제외

for i in $(seq 1 "$COUNT"); do
    # curl로 time_total 측정 (밀리초로)
    ELAPSED=$(curl -s -o /dev/null -w "%{time_total}" "$URL")
    ELAPSED_MS=$(awk -v t="$ELAPSED" 'BEGIN { printf "%.0f", t * 1000 }')

    if [ "$i" -eq 1 ] && [ "$COUNT" -gt 1 ]; then
        echo "회차 $i: ${ELAPSED_MS}ms (워밍업, 평균 제외)"
    else
        echo "회차 $i: ${ELAPSED_MS}ms"
        TOTAL=$((TOTAL + ELAPSED_MS))
    fi
done

if [ "$COUNT" -gt 1 ]; then
    EFFECTIVE_COUNT=$((COUNT - SKIP))
    AVG=$((TOTAL / EFFECTIVE_COUNT))
    echo "----------------------------------------------------------------"
    echo " 평균 (워밍업 제외 $EFFECTIVE_COUNT회): ${AVG}ms"
else
    echo " 단일 측정: ${TOTAL}ms"
fi
echo "================================================================"