1.什么是WonderShaper
WonderShaper是用来对特定网卡进行快速限速的工具，它实际是对Linux的tc命令进行封装后的shell脚本，所以使用成本比tc更低，更容易上手，以下配合测速工具speedtest一起使用
2.如何安装WonderShaper
#直接拉取wondershaper，开箱即用
git clone https://github.com/magnific0/wondershaper.git
root@****-5491:/home/soft/wondershaper# ./wondershaper -v
Version 1.4.1
root@****-5491:/home/soft/wondershaper#
#网速测试工具speedtest安装(Ubuntu)
apt install speedtest-cli
--yum install speedtest-cli (centos)
3.WonderShaper使用帮助
root@****-5491:/home/soft/wondershaper# ./wondershaper -h
USAGE: ./wondershaper [-hcs] [-a <adapter>] [-d <rate>] [-u <rate>]
Limit the bandwidth of an adapter
OPTIONS:
-h Show this message 【帮助信息】
-a <adapter> Set the adapter 【指定网卡接口】
-d <rate> Set maximum download rate (in Kbps) and/or 【限制下载速度(Kbps)】
-u <rate> Set maximum upload rate (in Kbps) 【限制上传速度(Kbps)】
-p Use presets in "/etc/systemd/wondershaper.conf"
-f <file> Use alternative preset file
-c Clear the limits from adapter 【清除指定网卡规则，用于取消限速】
-s Show the current status of adapter 【显示当前网卡的状态】
-v Show the current version 【显示当前版本】
Configure HIPRIODST in "/etc/systemd/wondershaper.conf" for hosts
requiring high priority i.e. in case ssh uses dport 443.
MODES:
wondershaper -a <adapter> -d <rate> -u <rate>
wondershaper -c -a <adapter>
wondershaper -s -a <adapter>
EXAMPLES: 【使用示例】
wondershaper -a eth0 -d 1024 -u 512 【设置网卡eth0的上行速度为512kbps，下行速度为1024kbps】
wondershaper -a eth0 -u 512 【只设置上行速度为512kbps】
wondershaper -c -a eth0 【清除网卡eth0的规则】
wondershaper -p -f foo.conf 【设置指定的配置文件】
4.WonderShaper使用示例
4.1查看网卡状态
root@****-5491:/home/soft/wondershaper# ifconfig eno1
eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.5.103 netmask 255.255.255.0 broadcast 192.168.5.255
inet6 fe80::2c93:21f9:1931:304 prefixlen 64 scopeid 0x20<link>
ether c8:f7:50:7e:50:48 txqueuelen 1000 (Ethernet)
RX packets 7748809 bytes 1034513376 (1.0 GB)
RX errors 0 dropped 439 overruns 0 frame 0
TX packets 15528838 bytes 4784318169 (4.7 GB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 16 memory 0x91500000-91520000
root@****-5491:/home/soft/wondershaper# ./wondershaper -s -a eno1
qdisc fq_codel 0: root refcnt 2 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 32Mb ecn
Sent 4528052159 bytes 14890189 pkt (dropped 0, overlimits 0 requeues 4224)
backlog 0b 0p requeues 4224
maxpacket 66616 drop_overlimit 0 new_flow_count 35953 ecn_mark 0
new_flows_len 0 old_flows_len 0
--测试网速
root@****-5491:/home/soft/wondershaper# speedtest
Retrieving speedtest.net configuration...
Testing from China Telecom (120.36.98.11)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by Fuzhou China Mobile,Fujian (Fuzhou) [589.19 km]: 14.449 ms
Testing download speed................................................................................
-- 下载网速是171.43 Mbit/s，
Download: 171.43 Mbit/s
Testing upload speed......................................................................................................
-- 上传网速是4.15 Mbit/s
Upload: 4.15 Mbit/s
4.2限制网卡速度（单位Kbps）
-- 下行2048kbps=2 Mbit/s,上行 1024kbps=1 Mbit/s
root@****-5491:/home/soft/wondershaper# ./wondershaper -a eno1 -d 2048 -u 1024
--测试网速
root@****e-5491:/home/soft/wondershaper# speedtest
Retrieving speedtest.net configuration...
Testing from China Telecom (120.36.98.11)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by Far EasTone Telecom (Miaoli City) [722.10 km]: 174.383 ms
Testing download speed................................................................................
-- 下行速度
Download: 1.80 Mbit/s
Testing upload speed......................................................................................................
--上行速度
Upload: 1.28 Mbit/s
root@****-5491:/home/soft/wondershaper#
4.3取消限速
--取消限速
root@****-5491:/home/soft/wondershaper# ./wondershaper -c -a eno1
-- 查看网卡状态
root@****-5491:/home/soft/wondershaper# ./wondershaper -s -a eno1
qdisc fq_codel 0: root refcnt 2 limit 10240p flows 1024 quantum 1514 target 5.0ms interval 100.0ms memory_limit 32Mb ecn
Sent 123022 bytes 471 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
maxpacket 0 drop_overlimit 0 new_flow_count 0 ecn_mark 0
new_flows_len 0 old_flows_len 0
-- 测试网速
root@****-5491:/home/soft/wondershaper# speedtest
Retrieving speedtest.net configuration...
Testing from China Telecom (120.36.98.11)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by Far EasTone Telecom (Miaoli City) [722.10 km]: 173.886 ms
Testing download speed................................................................................
Download: 11.29 Mbit/s
Testing upload speed......................................................................................................
Upload: 2.93 Mbit/s
root@****-5491:/home/soft/wondershaper#
5.WonderShaper在测试中的应用
测试项目：某内部数据库迁移工具
测试目的：数据迁移中，对目标端进行限速，当取消限速后，传输速度可以恢复
测试步骤：起迁移进程，在目标端服务器上用WonderShaper工具进行限速：
-- 只限制下行速度
[#22#root@**** ~/wondershaper]22 ./wondershaper -a enp0s3 -d 100
测试结果：限速后，写目标库单位写入行数和单位写入字节数都急剧下降，如下图：
取消限速，恢复网络后，传输速率慢慢恢复：
6.网速单位转换
1KB/s = 8kbps = 8kb/s
比如一般100M的宽带，实际是100Mbps=(100/8) MB/s=12.5 MB/s
7.总结
使用WonderShaper对网卡进行限速，在测试时可以针对性的指定网卡，指定上传速度或者指定下载速度，在测试中上传和下载速度是互不影响的，可以只限制一方；且WonderShaper工具操作简单好入手，是个不错的工具。
