Latency

curl -o /dev/null -s -w"
    time_namelookup: %{time_namelookup}s\n\
    time_connect: %{time_connect}s\n\
    time_appconnect: %{time_appconnect}s\n\
    time_pretransfer: %{time_pretransfer}s\n\
    time_starttransfer: %{time_starttransfer}s\n\
    time_total: %{time_total}s\n" https://www.fnnas.com

    time_namelookup: 0.030327s
    time_connect: 0.062180s
    time_appconnect: 0.135421s
    time_pretransfer: 0.135541s
    time_starttransfer: 0.193158s
    time_total: 0.414906s

#!/bin/bash

# 使用方法: ./curl-test.sh <域名> <测试次数>
if [ $# -lt 2 ]; then
    echo "Usage: $0 <domain> <times>"
    exit 1
fi

DOMAIN=$1
TIMES=$2
times_arr=()

echo "Testing $DOMAIN $TIMES times..."
echo "-----------------------------"

for i in $(seq 1 $TIMES); do
    # 获取 curl 输出
    output=$(curl -o /dev/null -s -w "time_namelookup: %{time_namelookup}s\n\
time_connect: %{time_connect}s\n\
time_appconnect: %{time_appconnect}s\n\
time_pretransfer: %{time_pretransfer}s\n\
time_starttransfer: %{time_starttransfer}s\n\
time_total: %{time_total}s\n" https://$DOMAIN)

    # 提取总耗时
    total_time=$(echo "$output" | grep "time_total" | awk '{print $2}' | sed 's/s//')
    times_arr+=($total_time)

    # 打印每次 run 的输出，去掉前后空行
    echo "Run #$i:"
    printf "%s\n" "$output"
    echo "-----------------------------"
done

# 计算平均、最大、最小值
sum=0
max=${times_arr[0]}
min=${times_arr[0]}

for t in "${times_arr[@]}"; do
    sum=$(echo "$sum + $t" | bc)
    (( $(echo "$t > $max" | bc -l) )) && max=$t
    (( $(echo "$t < $min" | bc -l) )) && min=$t
done

avg=$(echo "scale=3; $sum / $TIMES" | bc)

echo "Summary for $DOMAIN after $TIMES runs:"
echo "Average total time: $avg s"
echo "Fastest total time: $min s"
echo "Slowest total time: $max s"

./curl-test.sh www.fnnas.com 5

ip a show dev eth1

3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 0a:58:74:a9:33:0a brd ff:ff:ff:ff:ff:ff
    altname enp2s0
    inet 110.x.x.x/24 brd 110.185.110.255 scope global eth1
       valid_lft forever preferred_lft forever
    inet 112.x.x.x/24 brd 112.19.8.255 scope global eth1
       valid_lft forever preferred_lft forever
    inet 116.x.x.x/24 brd 116.169.51.255 scope global eth1
       valid_lft forever preferred_lft forever
    inet6 fe80::858:74ff:fea9:330a/64 scope link
       valid_lft forever preferred_lft forever

curl -o /dev/null -s -w "%{time_total}\n" --interface 116.x.x.x https://www.fnnas.com

curl -o /dev/null -s --interface 116.x.x.x -w"
    time_namelookup: %{time_namelookup}s\n\
    time_connect: %{time_connect}s\n\
    time_appconnect: %{time_appconnect}s\n\
    time_pretransfer: %{time_pretransfer}s\n\
    time_starttransfer: %{time_starttransfer}s\n\
    time_total: %{time_total}s\n" https://www.fnnas.com

tcpdump -i eth1 host fnnas.com and port 443 -n