Re: [lwip-users] TCP bandwidth limited by rate of ACKs

2011-10-10 Thread Bill Auerbach
>-Original Message- >I was expecting to reach 80+ Mbit/s, so I captured the conversation >with Wireshark, and I noticed that the sender is being throttled >because the receiver (the STB running lwip) is not sending ACKs >fast enough. > >cf. STB_TCP_RX_2.pcap (6 MB -- I truncated payloads to

Re: [lwip-users] TCP bandwidth limited by rate of ACKs

2011-10-10 Thread Simon Goldschmidt
Mason wrote: > I send 58,400,000 bytes from the PC to the STB. > This takes 14.25 seconds, i.e. an average of 33 Mbit/s > > I was expecting to reach 80+ Mbit/s, so I captured the conversation > with Wireshark, and I noticed that the sender is being throttled > because the receiver (the STB runnin

[lwip-users] TCP bandwidth limited by rate of ACKs

2011-10-10 Thread Mason
Hello, I've ported lwip 1.4.0 to an ST7105 dev set-top box (450 MHz SH-4 core, Fast Ethernet port). http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATA_BRIEF/CD00209329.pdf The STB is connected directly to my PC (no switch or router). I've written code on the STB to rec

Re: [lwip-users] ping support in lwip1.3.2

2011-10-10 Thread vincent cui
That's not impossible for me to port lwIP 1.4.0 to my system again Vincent Cui Sr. Firmware Engineer Mobile: +8613255150315 Tel: +86 21 34612525x6104 Fax: +86 21 34619770 E-Mail: vincent@enlogic.com Shanghai EnLogic Electric Technology Co., Ltd. Address: 1104-1106, Building A, No.391, Guiping

Re: [lwip-users] ping support in lwip1.3.2

2011-10-10 Thread Simon Goldschmidt
vincent cui wrote: > I found the ping code in > lwip-contrib-c67a905dd9e7eb378c8bb73ce0e253b90554760c is for lwip1.4.0 > But my system use lwip1.3.2 for long time ...I don't want to modify it ... > Compared with files ,,,lwip1.4.0 add timer.h and timer.c that don't exist > in lwip1.3.2 > > So, is

[lwip-users] ping support in lwip1.3.2

2011-10-10 Thread vincent cui
Hi: I found the ping code in lwip-contrib-c67a905dd9e7eb378c8bb73ce0e253b90554760c is for lwip1.4.0 But my system use lwip1.3.2 for long time ...I don't want to modify it ... Compared with files ,,,lwip1.4.0 add timer.h and timer.c that don't exist in lwip1.3.2 So, is there ping code for lwip1.