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xtaci / kcptun

A Quantum-Safe Secure Tunnel based on QPP, KCP, FEC, and N:M multiplexing.
MIT License
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为什么用了kcptun速度反而不如直连了？ #136

Closed kmahyyg closed 8 years ago

kmahyyg commented 8 years ago

I use the 20160811 version on both side (20160816 is also not worked!).

Server&Client : 

--crypt none --mode fast --mtu 1200 --nocomp --dscp 46 --rcvwnd 64 --sndwnd 64

(listened on port: ss port +20)(redirect success)(iptables set correct)

Debian 8 x64 hosted on bandwagonhost los angeles

Client: WinXP SP3 or Win8.1 Network: Yunnan Telecom Wi-Fi in my home (10Mbps)

Speed Tested using fast.com

When use KCPTUN , downloading something from npr with Chrome 52 always like this: 1.4 mb/s ... 0 byte/s ... 0 byte/s when directly connect to ss : 250 kb/s

Test Speed using fast.com: (Using --datashard 10 --parityshard 0 before) (KCPTUNed/Direct) 1.4Mbps 1Mbps (now using the default value) 350kbps 1.4Mbps

Why?

xtaci commented 8 years ago

It's the worst case I ever seen.

slowest access network + worst oversea bandwidth of ISP + slowest VPS.

I cannot help you .

wxyzh commented 8 years ago

先要明确kcptun的使用范围

xtaci notifications@github.com于2016年8月18日周四 15:22写道：

It's the worst case I ever seen.

slowest access network + worst oversea bandwidth of ISP + slowest VPS.

I cannot help you .

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/xtaci/kcptun/issues/136#issuecomment-240644088, or mute the thread https://github.com/notifications/unsubscribe-auth/ASpHqXOh-l7vDdLlF_CcUTUWgVhIX3QWks5qhAgagaJpZM4JnMtL .

kmahyyg commented 8 years ago

but i can using direct connection to my vps , i used netspeeder before,it's more stable.

also in the same network in my house, speed of connecting to japan GMO vps is 8mbps+(speedtest.net)

BTW, @xtaci Is there anything wrong with my arguments?or can be optimized?

kmahyyg commented 8 years ago

Still V160811 But Changed to:

--rcvwnd 128 --sndwnd 128

Test reported more fast than ever before(5.+ mbps,the same network,fast.com)

But There's something wrong in the cmd i have never seen before:

2016/08/19 08:09:04 sndwnd: 128 rcvwnd: 128 2016/08/19 08:09:04 compression: false 2016/08/19 08:09:04 mtu: 1200 2016/08/19 08:09:04 datashard: 10 parityshard: 3 2016/08/19 08:09:04 acknodelay: false 2016/08/19 08:09:04 dscp: 46 2016/08/19 08:09:04 sockbuf: 4194304 2016/08/19 08:09:04 keepalive: 10 2016/08/19 08:09:04 conn: 1 2016/08/19 08:13:36 [ERR] yamux: keepalive failed: i/o deadline reached 2016/08/19 08:13:36 [ERR] yamux: Failed to read header: broken pipe 2016/08/19 08:23:56 session shutdown

xtaci commented 8 years ago

137 discuss here