Linux高精度的批量ping
实测150个IP，在vps上精确度为±1ms。（在WSL上精确度或许不足）
-
配置文件
config.ini、iplist.txt手动拷贝到bin文件同目录
#uint 读取列表时间间隔（分钟） 默认5，范围[5,10]
UpdateListTimeMinutes = 5
#string ip列表文件
UpdateListFile = iplist.txt
#uint 一大轮测速间隔（秒） 默认60，范围[30,300]
PingIntervalSecond = 10
#uint (一小轮)每个IP测数次数（次）默认2，范围[1,50]
PingIPCount = 10
#uing (一小轮)每个IP测速间隔(毫秒) 默认10，范围[10,100]
PingIPIntervalMs = 10
#uint 测速超时时间（毫秒）默认1000，范围[100,2000]
PingTimeOutMs = 1000
-
原理
假设每个IP测10次，那么就启动10个线程来recv，再启动10个线程send，并计算好每个线程的ping时间，用std::this_thread::sleep_until(tp_begin);。
使用异步sendto，假设sendto不耗时，由此来精确控制ping间隔。
-
测速示例 共35个IP，每个IP测10次，每次间隔10ms
[**** Debug]# ./FastPing.out
net.ipv4.ping_group_range = 0 0
UpdateListFile = iplist.txt
UpdateListTimeMinutes = 5
PingIntervalSecond = 60
PingIPCount = 10
PingIPIntervalMs = 10
PingTimeOutMs = 1000
set_ip_list_cache size: 35
开始测速 次数: 10, 间隔10ms, 超时: 1000ms, 理论耗时(次数*间隔+超时+1秒): 2100ms
addr: 18.166.83.241 , s/r: 10/10 ( 0%), avg: 2.166ms
addr: 18.182.229.53 , s/r: 10/10 ( 0%), avg: 53.315ms
addr: 18.184.144.251 , s/r: 10/10 ( 0%), avg: 212.830ms
addr: 23.50.192.1 , s/r: 10/10 ( 0%), avg: 278.36 ms
addr: 23.58.222.1 , s/r: 10/10 ( 0%), avg: 346.581ms
addr: 23.97.97.8 , s/r: 10/10 ( 0%), avg: 350.696ms
addr: 23.98.144.52 , s/r: 10/10 ( 0%), avg: 238.644ms
addr: 23.194.192.1 , s/r: 10/10 ( 0%), avg: 113.829ms
addr: 27.102.118.1 , s/r: 10/10 ( 0%), avg: 40.194ms
addr: 27.155.119.78 , s/r: 10/10 ( 0%), avg: 33.164ms
addr: 31.41.56.1 , s/r: 10/10 ( 0%), avg: 372.640ms
addr: 34.72.161.220 , s/r: 10/10 ( 0%), avg: 169.516ms
addr: 34.141.68.38 , s/r: 10/10 ( 0%), avg: 213.179ms
addr: 35.156.184.121 , s/r: 10/10 ( 0%), avg: 197.226ms
addr: 169.56.83.75 , s/r: 10/10 ( 0%), avg: 47.492ms <-这个用于实际ping
addr: 172.65.223.1 , s/r: 10/10 ( 0%), avg: 2.700ms
addr: 172.65.230.1 , s/r: 10/10 ( 0%), avg: 2.89 ms
addr: 172.98.85.8 , s/r: 10/10 ( 0%), avg: 214.976ms
addr: 172.107.218.1 , s/r: 10/10 ( 0%), avg: 141.356ms
addr: 175.6.6.109 , s/r: 9/10 ( 10%), avg: 17.731ms
addr: 182.201.242.76 , s/r: 10/10 ( 0%), avg: 58.142ms
addr: 183.2.157.1 , s/r: 10/10 ( 0%), avg: 11.454ms
addr: 185.101.137.134, s/r: 10/10 ( 0%), avg: 77.821ms
addr: 185.175.47.29 , s/r: 10/10 ( 0%), avg: 276.876ms
addr: 185.179.202.101, s/r: 10/10 ( 0%), avg: 440.633ms
addr: 185.179.203.164, s/r: 10/10 ( 0%), avg: 445.341ms
addr: 185.225.208.1 , s/r: 10/10 ( 0%), avg: 308.387ms
addr: 192.144.236.171, s/r: 10/10 ( 0%), avg: 48.407ms
addr: 200.187.199.1 , s/r: 10/10 ( 0%), avg: 345.537ms
addr: 202.136.162.1 , s/r: 10/10 ( 0%), avg: 40.476ms
addr: 202.136.162.2 , s/r: 10/10 ( 0%), avg: 39.56 ms
addr: 203.116.132.193, s/r: 10/10 ( 0%), avg: 35.947ms
addr: 209.58.169.122 , s/r: 10/10 ( 0%), avg: 35.760ms
addr: 217.147.89.1 , s/r: 10/10 ( 0%), avg: 294.303ms
addr: 217.182.200.7 , s/r: 10/10 ( 0%), avg: 312.317ms
测速结束,总耗时: 2100ms
^C
[**** Debug]#
-
实际ping结果
与ping程序测速相差47.574 - 47.492= 0.082ms
[***** Debug]# ping 169.56.83.75
PING 169.56.83.75 (169.56.83.75) 56(84) bytes of data.
64 bytes from 169.56.83.75: icmp_seq=1 ttl=53 time=47.4 ms
64 bytes from 169.56.83.75: icmp_seq=2 ttl=53 time=47.3 ms
64 bytes from 169.56.83.75: icmp_seq=3 ttl=53 time=47.6 ms
64 bytes from 169.56.83.75: icmp_seq=4 ttl=53 time=47.4 ms
64 bytes from 169.56.83.75: icmp_seq=5 ttl=53 time=47.7 ms
64 bytes from 169.56.83.75: icmp_seq=6 ttl=53 time=47.5 ms
64 bytes from 169.56.83.75: icmp_seq=7 ttl=53 time=47.5 ms
64 bytes from 169.56.83.75: icmp_seq=8 ttl=53 time=47.6 ms
64 bytes from 169.56.83.75: icmp_seq=9 ttl=53 time=47.6 ms
64 bytes from 169.56.83.75: icmp_seq=10 ttl=53 time=47.7 ms
64 bytes from 169.56.83.75: icmp_seq=11 ttl=53 time=47.3 ms
64 bytes from 169.56.83.75: icmp_seq=12 ttl=53 time=47.1 ms
64 bytes from 169.56.83.75: icmp_seq=13 ttl=53 time=47.5 ms
64 bytes from 169.56.83.75: icmp_seq=14 ttl=53 time=47.8 ms
64 bytes from 169.56.83.75: icmp_seq=15 ttl=53 time=47.9 ms
64 bytes from 169.56.83.75: icmp_seq=16 ttl=53 time=47.4 ms
64 bytes from 169.56.83.75: icmp_seq=17 ttl=53 time=47.6 ms
64 bytes from 169.56.83.75: icmp_seq=18 ttl=53 time=47.7 ms
64 bytes from 169.56.83.75: icmp_seq=19 ttl=53 time=47.5 ms
^C
--- 169.56.83.75 ping statistics ---
19 packets transmitted, 19 received, 0% packet loss, time 18025ms
rtt min/avg/max/mdev = 47.149/47.574/47.920/0.235 ms