RE: [lwip-users] Ethernet throughput

[nicolas FAUVEL]

Thanks,

Actually my problem could come from TCP retransmissions handling. I’m using a quite old version of lwIP (0.6) and I’m wondering if this version handles retransmissions correctly.

As shown in the pcap file, packet loss are encountered (due to Ethernet collisions) and lwIP (which retransmits packets) freezes at frame 2439…

Any idea ?

 

Nicolas

 

De : address@hidden [mailto:address@hidden
Envoyé : mercredi 19 novembre 2008 09:57
À : Mailing list for lwIP users
Objet : Re: [lwip-users] Ethernet throughput

 

Hi,

I think LwIP is able to satisfy the condition.

You should make your network card driver very steady.

Make PBUF_POOL_SIZE big enough, this is used in receive. So as MEMP_NUM_PBUF, which used in sending.

In a word, the full system should be steady.

 

Best Regards!

 

HuangZhenhua

 

 

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2008-11-19

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发件人： nicolas FAUVEL

发送时间： 2008-11-19 16:47:39

收件人： Mailing list for lwIP users

抄送：

主题： [lwip-users] Ethernet throughput

 

Hello,

 

I’m testing lwIP in a busy Ethernet environment : that is to say over 1000 Ethernet frames per second.

Has anyone observed any limitation or issue with lwIP in these conditions ?

 

Regards,

 

Nicolas

 

tcp_retrans.pcap
Description: tcp_retrans.pcap