openvpn 聚合 iperf3 测速正常，但是 speedtest-cli 依旧很慢

[whyorwhynot]

因为出国线路拥堵，用 openvpn 单线转发性能捉急，楼主调研发现了 openvpn bonding 这个玩意，可以做到多线程多链路转发。

在参考了 github 上 onemarcfifty/openvpn-bonding 这个项目后也算折腾起来了，使用 bond 模式 0 和 2 都可以做到网络提速，通过 iperf3 和服务端连接多线程测速，可以达到 50 多 mbps 的下行速度，可是用 speedtest 进行测速就只有 4mbps 。

有热心的 v2er 知道原因吗。。。 help

本地上传测速 iperf3 -c 10.100.0.254 -P8

[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  3.95 MBytes  3.31 Mbits/sec  169             sender
[  5]   0.00-10.00  sec  3.15 MBytes  2.64 Mbits/sec                  receiver
[  7]   0.00-10.00  sec  4.47 MBytes  3.75 Mbits/sec  171             sender
[  7]   0.00-10.00  sec  3.52 MBytes  2.95 Mbits/sec                  receiver
[  9]   0.00-10.00  sec  10.6 MBytes  8.91 Mbits/sec  377             sender
[  9]   0.00-10.00  sec  9.03 MBytes  7.58 Mbits/sec                  receiver
[ 11]   0.00-10.00  sec  7.89 MBytes  6.62 Mbits/sec  453             sender
[ 11]   0.00-10.00  sec  5.93 MBytes  4.97 Mbits/sec                  receiver
[ 13]   0.00-10.00  sec  7.93 MBytes  6.65 Mbits/sec  356             sender
[ 13]   0.00-10.00  sec  6.91 MBytes  5.80 Mbits/sec                  receiver
[ 15]   0.00-10.00  sec  9.75 MBytes  8.18 Mbits/sec  226             sender
[ 15]   0.00-10.00  sec  8.24 MBytes  6.91 Mbits/sec                  receiver
[ 17]   0.00-10.00  sec  7.96 MBytes  6.67 Mbits/sec  224             sender
[ 17]   0.00-10.00  sec  7.02 MBytes  5.89 Mbits/sec                  receiver
[ 19]   0.00-10.00  sec  11.1 MBytes  9.33 Mbits/sec  462             sender
[ 19]   0.00-10.00  sec  10.4 MBytes  8.70 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  63.7 MBytes  53.4 Mbits/sec  2438             sender
[SUM]   0.00-10.00  sec  54.2 MBytes  45.4 Mbits/sec                  receiver

本地下载测速 iperf3 -c 10.100.0.254 -P8 -R

[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  8.72 MBytes  7.31 Mbits/sec  246             sender
[  5]   0.00-10.00  sec  7.97 MBytes  6.68 Mbits/sec                  receiver
[  7]   0.00-10.00  sec  8.95 MBytes  7.50 Mbits/sec  150             sender
[  7]   0.00-10.00  sec  8.35 MBytes  7.01 Mbits/sec                  receiver
[  9]   0.00-10.00  sec  9.33 MBytes  7.83 Mbits/sec  110             sender
[  9]   0.00-10.00  sec  8.76 MBytes  7.35 Mbits/sec                  receiver
[ 11]   0.00-10.00  sec  9.44 MBytes  7.92 Mbits/sec  138             sender
[ 11]   0.00-10.00  sec  8.83 MBytes  7.40 Mbits/sec                  receiver
[ 13]   0.00-10.00  sec  8.62 MBytes  7.23 Mbits/sec  165             sender
[ 13]   0.00-10.00  sec  8.00 MBytes  6.71 Mbits/sec                  receiver
[ 15]   0.00-10.00  sec  9.82 MBytes  8.24 Mbits/sec  137             sender
[ 15]   0.00-10.00  sec  9.20 MBytes  7.72 Mbits/sec                  receiver
[ 17]   0.00-10.00  sec  8.98 MBytes  7.53 Mbits/sec  186             sender
[ 17]   0.00-10.00  sec  8.31 MBytes  6.97 Mbits/sec                  receiver
[ 19]   0.00-10.00  sec  8.35 MBytes  7.00 Mbits/sec  131             sender
[ 19]   0.00-10.00  sec  7.84 MBytes  6.57 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  72.2 MBytes  60.6 Mbits/sec  1263             sender
[SUM]   0.00-10.00  sec  67.3 MBytes  56.4 Mbits/sec                  receiver

本地下载单线程测速 iperf3 -c 10.100.0.254 -R

Connecting to host 10.100.0.254, port 5201
Reverse mode, remote host 10.100.0.254 is sending
[  5] local 10.100.0.253 port 50882 connected to 10.100.0.254 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec   141 KBytes  1.16 Mbits/sec                  
[  5]   1.00-2.00   sec   374 KBytes  3.06 Mbits/sec                  
[  5]   2.00-3.00   sec   912 KBytes  7.47 Mbits/sec                  
[  5]   3.00-4.00   sec  1.22 MBytes  10.2 Mbits/sec                  
[  5]   4.00-5.00   sec  1.42 MBytes  12.0 Mbits/sec                  
[  5]   5.00-6.00   sec  1.60 MBytes  13.4 Mbits/sec                  
[  5]   6.00-7.00   sec  1.81 MBytes  15.2 Mbits/sec                  
[  5]   7.00-8.00   sec  1.78 MBytes  14.9 Mbits/sec                  
[  5]   8.00-9.00   sec  1.80 MBytes  15.1 Mbits/sec                  
[  5]   9.00-10.00  sec  1.69 MBytes  14.2 Mbits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  13.6 MBytes  11.4 Mbits/sec   30             sender
[  5]   0.00-10.00  sec  12.7 MBytes  10.7 Mbits/sec                  receiver

客户端 bond 配置

一共 8 个 tap，单个 tap 显示 10Mbps，但查询了一些论坛，有些人表示被限速到 10mbps 但有些人说只是展示问题
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: load balancing (round-robin)
MII Status: up
MII Polling Interval (ms): 0
Up Delay (ms): 0
Down Delay (ms): 0
Peer Notification Delay (ms): 0

Slave Interface: tap1
MII Status: up
Speed: 10 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: f6:8b:a1:db:0a:c9
Slave queue ID: 0

Slave Interface: tap2
MII Status: up
Speed: 10 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 92:99:a7:28:58:ac
Slave queue ID: 0

Slave Interface: tap3
MII Status: up
Speed: 10 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 9e:8b:2f:83:42:a8
Slave queue ID: 0

本地路由配置

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
default         _gateway        0.0.0.0         UG    1      0        0 bond0
10.100.0.0      0.0.0.0         255.255.255.0   U     0      0        0 bond0
link-local      0.0.0.0         255.255.0.0     U     1000   0        0 ens33
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
192.168.122.0   0.0.0.0         255.255.255.0   U     100    0        0 ens33

speedtest-cli 测速

这个命令行测速工具应该是多线程测速，通过浏览器访问 speedtest 也是这个速度
Retrieving speedtest.net configuration...
Testing from FranTech Solutions (x.x.x.x)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by Razzolink Inc (San Jose, CA) [0.45 km]: 305.063 ms
Testing download speed................................................................................
Download: 4.37 Mbit/s
Testing upload speed..................................................................................
Upload: 3.08 Mbit/s

[tia]

测国内节点

[whyorwhynot]

@tia 通过 vpn 测 speedtest 国内节点？选择了一个靠近本地的节点，浙江宁波移动， 延迟 440ms Download 2.25Mbps，Upload 1.41 Mbps

[huangya]

你确定 speedtest-cli 是多线程测速？ speedtest-cli -h 看看有没有更多的 option 可以打开更多的 log, 一般是-vv(两个 vv 看下详细的 log,或者用 tcpdump 抓下包看看）

[JimmyTinsley]

试试 speedtest 官方的 cli https://www.speedtest.net/zh-Hans/apps/cli

[whyorwhynot]

@huangya 是多线程的，看了一下代码，默认 8 线程，有一个 single 参数可以修改为单线程测速，测出来是多线程速度的差不多 1/8 (0.52 Mbit/s)

[whyorwhynot]

@JimmyTinsley 官方的 speedtest 默认线程数比 speedtest-cli 少了一半，是 4 个连接，测出来 download 2.3mbps 。。

[dsnap5]

内网中转鸡场，IPLC 流量转发，哪个不比你折腾的这玩艺要强

[whyorwhynot]

@dsnap5 机场之类的也在用，流量有限，带宽给他们占满了也不好。折腾这个主要是因为用自己的 vps 可以无限流量，中转一下长期挂着 BT 下载，也有些图拉丁思想。这个 bonding 可能效果就是这么差吧。。。。逃

[harwck]

换成 speedtest-cli 仓库里的 speedtest-cli.py 即可解

[fvladlpa]

@whyorwhynot 讲真，你这种如果不走一些特殊的优化的线路，跟着公网挤，用啥都一样的。

[luyunpsyduck]

openvpn 的单线程性能瓶颈应该是在跑大流量，200mbps 以上一个核心的 CPU 占用会飙升到 90%之后回落，伴随传输掉速。
如果你公网路线垃圾的话，多线程也救不了你。

[lin559671]

是 openVPN udp ？ udp 的话，换 wireguard 试试。tcp 的话，也可以试试 pptp bonding 。 公网线路差的话什么都救不了你。

[whyorwhynot]

@luyunpsyduck @lin559671 公网线路垃圾。其实这 bonding 的多个线路还是走的 cloudflare cdn 通过 v2ray 任意门转发出来的