Ok, I'm now back up-and-running. With Studio 2.5, Framework 1.7 and LWIP 1.3.2. My streaming is working great at the moment. I'm limited to 2.1Mbits/s of throughput though, so I started reading your Wiki page Simon and trying things.
I have one question: - How do I know if the checksum can be calculated by the hardware? I'm using a board I made but based on the Atmel EVK1100. Thanks!!!! Dany On Tue, Mar 23, 2010 at 11:50 AM, Martin Persich <[email protected]>wrote: > Hi Dany, > I'm workin with AVR32 too and I have similar problem in this momen (I have > LwIP 1.3.2 + some CVS changes and Atmel framework 1.7 of course). My app is > hanging with huge ethernet load (traffic approx 20 GB / day) sometime - once > per day, but most often once per week, ... terrible situation. I am > suspecting Atmel "macb.c" driver in this moment, I am not sure if all code > in "macb.c" (function lMACBSend) is thread and IRQ safety. But it is only my > last idea. I changed ETHERNET_CONF_NB_TX_BUFFERS from 10 to 24 two days > ago ... > I haven't any problem solution in this moment. > Martin Persich > > > ----- Original Message ----- > *From:* Dany Thiffeault <[email protected]> > *To:* Mailing list for lwIP users <[email protected]> > *Sent:* Monday, March 22, 2010 10:13 PM > *Subject:* Re: [lwip-users] Help in getting maximum throughput with LWIP. > > wow, great thanks. I'll make some tests tomorrow. > > Indeed, I forgot to mention. I'm using TCP with the netconn API. While > reading through the multiple posts I missed the past few months, I found out > that 1.3.2 is out and Atmel framework 1.7 too. I'll upgrade everything > tomorow. > > But in the meantime, I'm experiencing problems like I wrote. I don't know > why my app is hanging in the tcp_in.c file. If somebody knows what's going > on on that line, let me know. > > > > On Mon, Mar 22, 2010 at 5:05 PM, [email protected] <[email protected]>wrote: > >> I just took the time to write something about performance/throughput on >> the wiki: >> - http://lwip.wikia.com/wiki/Maximizing_throughput >> - http://lwip.wikia.com/wiki/Tuning_TCP >> >> However, you didn't tell us if you are using TCP or UDP? Also, I don't >> know what ETHERNET_CONF_NB_TX_BUFFERS is, so I'm guessing it's related to >> the lwIP port you are using... Maybe someone else here has experience with >> the platform you are using, but I don't :-( >> >> Simon >> >> >> Dany Thiffeault wrote: >> >> Hi, >> >> I'm currently coding an application on a AVR32 UC3 board. The board is >> actually an acquisition platform that's using Ethernet (lwip 1.3.1 >> currently). I'm using FreeRTOS and the Atmel framework 1.4. >> >> My connection is working great with my Windows application. There are two >> modes to my AVR32 application: >> >> 1- Idle mode where there are only keep-alive packets every 1 second, of >> 8bytes each. >> 2- Streaming mode, where the AVR32 (so LWIP) send data as fast as possible >> to the Win application. >> >> What is important to me is to get maximum speed in Streaming mode, where >> packets are Header(24bytes) + Data(?Bytes). I'm currently playing with the >> data size to see what I can achieve. Ideally, the maximum size I would like >> is about 35KBytes. Right now, I'm not sure what's going on, but the Ethernet >> seems to hang after a few seconds of streaming. Haven't found the problem so >> far. >> >> So, what are the important parameters for maximum thoughput in the >> lwipopts.h file dans other #defines like ETHERNET_CONF_NB_TX_BUFFERS, etc. >> I'm kind of lost in all those parameters. >> >> Thanks a lot!! >> Dany >> >> >> _______________________________________________ >> lwip-users mailing >> [email protected]http://lists.nongnu.org/mailman/listinfo/lwip-users >> >> >> >> _______________________________________________ >> lwip-users mailing list >> [email protected] >> http://lists.nongnu.org/mailman/listinfo/lwip-users >> > > > _______________________________________________ > lwip-users mailing list > [email protected] > http://lists.nongnu.org/mailman/listinfo/lwip-users >
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